Thoracic Surgery and Postoperative Respiratory Care

Thoracic surgery involves surgical procedures performed inside the chest, including operations on the lungs, pleura, esophagus, mediastinum, diaphragm, and chest wall. For respiratory therapists, thoracic surgery is important because it can directly affect ventilation, oxygenation, cough strength, secretion clearance, and lung expansion.

After surgery, patients are at increased risk for complications such as atelectasis, retained secretions, pneumonia, hypoxemia, and respiratory failure.

Understanding these risks helps the respiratory therapist assess the patient, support recovery, and respond quickly when breathing problems develop.

What Is Thoracic Surgery?

Thoracic surgery refers to surgery performed within the thoracic cavity, which is the area of the body inside the chest. This region contains the lungs, heart, major blood vessels, esophagus, trachea, bronchi, pleural spaces, and supporting structures of the chest wall. In respiratory care, thoracic surgery usually relates most closely to procedures involving the lungs, pleura, airways, and chest wall.

Common thoracic procedures may include lung biopsy, lobectomy, pneumonectomy, thoracoscopy, chest wall surgery, esophageal surgery, thoracic aortic surgery, and procedures used to manage pleural disease. Some patients may undergo thoracic surgery to remove diseased lung tissue, treat cancer, repair trauma, drain pleural collections, manage air leaks, or correct structural problems.

From a respiratory standpoint, thoracic surgery is significant because it can interfere with normal breathing mechanics. The chest wall, diaphragm, pleura, and lungs all work together to support ventilation. When surgery involves these structures, the patient may have pain, reduced chest expansion, decreased lung volumes, impaired cough, and altered ventilation. These changes can place the patient at risk for postoperative pulmonary complications.

The respiratory therapist plays an important role before and after thoracic surgery. This includes assessing risk, teaching breathing techniques, monitoring oxygenation, promoting lung expansion, helping with airway clearance, recognizing complications, and supporting ventilation when needed.

Why Thoracic Surgery Affects Breathing

Thoracic surgery can affect breathing in several ways. One of the most important factors is pain. Surgical incisions in the chest can make deep breathing and coughing uncomfortable. As a result, patients may breathe shallowly, avoid coughing, and limit chest movement. This protective behavior is often called splinting.

Although splinting may reduce pain in the short term, it can also reduce ventilation to parts of the lung. When the patient does not take periodic deep breaths, alveoli may not fully expand. Over time, this can lead to atelectasis, which is collapse or incomplete expansion of lung tissue.

General anesthesia, sedation, bed rest, and reduced mobility can make the problem worse. Anesthesia can decrease normal sigh breaths and impair airway clearance. Sedatives can reduce respiratory drive and alertness. Bed rest can reduce lung volumes and promote secretion retention. In some patients, obesity or neuromuscular weakness may further limit diaphragmatic movement and deep breathing.

The closer the surgical incision is to the diaphragm, the greater the risk for postoperative atelectasis. This is why upper abdominal and thoracic surgeries are especially associated with pulmonary complications. Both types of surgery can interfere with diaphragmatic movement, chest expansion, coughing, and effective ventilation.

Atelectasis After Thoracic Surgery

Atelectasis is one of the most common respiratory concerns after thoracic surgery. It occurs when alveoli collapse or fail to expand properly. When alveoli are not ventilated, gas exchange becomes less effective, and oxygenation may decline.

After thoracic surgery, atelectasis may develop for several reasons. Shallow breathing can prevent alveoli from receiving enough air. Pain can make the patient avoid deep breaths. Secretions can obstruct airways and prevent ventilation beyond the blockage. Sedation can reduce the frequency of deep inspiration. Bed rest can decrease lung expansion. Together, these factors increase the likelihood of alveolar collapse.

Atelectasis is often seen in the lower lobes after surgery because these areas are more affected by reduced diaphragmatic movement and shallow breathing. Patients who have chronic lung disease, a smoking history, obesity, weak cough, or poor mobility are at even greater risk.

The respiratory therapist should suspect atelectasis when a postoperative thoracic surgery patient develops increased respiratory rate, dyspnea, decreased breath sounds, fine late-inspiratory crackles, increased oxygen requirement, or signs of hypoxemia. In some cases, the patient may also have tachycardia due to low oxygen levels.

Mild atelectasis may produce subtle findings, but more significant atelectasis can cause obvious respiratory distress. Early recognition is important because treatment is more effective when lung expansion problems are addressed before they become severe.

Clinical Signs to Watch For

After thoracic surgery, the respiratory therapist should closely assess the patient’s breathing pattern, chest movement, breath sounds, cough, oxygenation, and overall work of breathing. Small changes may be early signs of a developing complication.

An increased respiratory rate is often one of the first clues that the patient is having difficulty maintaining adequate ventilation or oxygenation. Shallow breathing may also be present, especially if the patient is guarding the incision due to pain. The patient may appear anxious, fatigued, or reluctant to take deep breaths.

Breath sounds may be diminished over areas of poor ventilation. Fine late-inspiratory crackles may be heard when small airways reopen during inspiration. In more significant atelectasis, bronchial breath sounds may be present over the affected area. The patient may also report shortness of breath or chest tightness.

Oxygenation should be monitored carefully. A drop in SpO₂ or an increasing need for supplemental oxygen may indicate atelectasis, retained secretions, pneumonia, or another complication. Tachycardia may occur as the body responds to hypoxemia.

Cough assessment is also important. The respiratory therapist should determine whether the cough is strong or weak, dry or productive, and whether secretions are being cleared effectively. A weak cough after thoracic surgery can increase the risk of retained secretions, airway obstruction, atelectasis, and infection.

Chest Radiograph Findings

Thoracic imaging can help confirm suspected postoperative complications. In atelectasis, chest radiograph findings often include increased opacity and signs of volume loss. The affected lung region may appear more dense because less air is present in the alveoli.

Volume loss is a key feature. Depending on the severity, atelectasis may involve a small subsegment, an entire segment, a lobe, or a larger portion of the lung. When volume loss is significant, surrounding structures may shift toward the affected area.

For example, the diaphragm may be elevated on the affected side. The mediastinum may shift toward the side of atelectasis. The rib spaces may narrow due to reduced lung expansion. These findings help distinguish atelectasis from conditions that increase volume or push structures away from the abnormal side.

For exam purposes, decreased lung volume with mediastinal shift toward the abnormal side is an important clue. This pattern is different from some other thoracic conditions, such as a large pleural effusion or tension pneumothorax, where pressure may push the mediastinum away from the affected side.

In severe atelectasis, the lung may appear extensively opaque. Bilateral atelectasis may cause diffuse changes without major mediastinal shift because both sides are affected. Radiographic findings should always be interpreted with the patient’s clinical signs, oxygenation status, breath sounds, and recent surgical history.

Impaired Cough After Thoracic Surgery

Effective coughing requires several steps. The patient must be able to inhale deeply, close the glottis, build intrathoracic pressure, and forcefully exhale to move secretions out of the airways. Thoracic surgery can interfere with this process.

Pain is one of the main reasons cough becomes ineffective after surgery. A patient with a fresh chest incision may avoid deep inspiration because it stretches the surgical area. The patient may also avoid a strong cough because it increases pain. When cough becomes weak, secretions can remain in the airways.

Retained secretions can obstruct airflow, increase airway resistance, promote infection, and contribute to atelectasis. This is why cough support is a major part of postoperative respiratory care. The respiratory therapist should assess whether the patient can cough voluntarily, whether secretions are present, and whether airway clearance is adequate.

Pain control is important before coughing is attempted. A patient who is in severe pain is unlikely to cooperate fully or produce an effective cough. The respiratory therapist may need to coordinate with nursing or medical staff so that pain medication is given at an appropriate time before breathing exercises or coughing.

Splinted coughing is often used after thoracic or abdominal surgery. The patient may sit upright and support the incision with both hands or a pillow. This support reduces traction on the incision and can make coughing less painful. The patient is then instructed to take a deep breath, apply gentle pressure over the incision, and cough.

Note: If a strong cough is too painful, the patient may perform two or three smaller coughs. The goal is to clear secretions while limiting pain and protecting the surgical area.

Incentive Spirometry

Incentive spirometry is commonly used after thoracic surgery to promote lung expansion and help prevent or treat atelectasis. It encourages the patient to take slow, deep breaths and achieve sustained maximal inspiration.

The purpose of incentive spirometry is to increase lung volume, improve alveolar expansion, and help restore a more normal breathing pattern. By encouraging deep inspiration, it can increase transalveolar pressure gradients and help reopen collapsed or poorly ventilated lung units.

Incentive spirometry is especially useful when the patient is at risk for atelectasis. Thoracic surgery is one of the classic predisposing conditions. Other risk factors include upper abdominal surgery, shallow breathing, bed rest, sedation, obesity, neuromuscular weakness, and chronic lung disease.

The device is simple, portable, inexpensive, and generally safe. However, it only works if the patient can understand instructions, cooperate, and breathe deeply enough to perform the maneuver correctly. Patients who are confused, unable to follow directions, in severe pain, or too weak to inhale effectively may not benefit unless these barriers are addressed.

Teaching Incentive Spirometry

Teaching is a major part of successful incentive spirometry. Ideally, the patient should learn the technique before surgery. Preoperative teaching allows the patient to practice while awake, more comfortable, and better able to understand instructions. After surgery, pain, sedation, and fatigue can make learning more difficult.

The respiratory therapist should explain the purpose of the device in simple terms. The patient should understand that the goal is not to breathe quickly, but to take slow, deep breaths that expand the lungs. Demonstration by the respiratory therapist is often one of the most effective teaching methods.

The patient should be placed in an upright or semi-upright position when possible. The respiratory therapist should instruct the patient to exhale normally, seal the lips around the mouthpiece, and inhale slowly and deeply. The inspiration should be sustained, using diaphragmatic breathing and a slow-to-moderate inspiratory flow.

After reaching maximal inspiration, the patient should hold the breath briefly, then exhale normally. A short breath hold allows time for ventilation to distribute and may help recruit alveoli. After exhalation, the patient should rest before repeating the maneuver.

The respiratory therapist should observe the patient’s first attempts. Common problems include inhaling too quickly, taking shallow breaths, using poor mouth seal, performing rapid repeated breaths, or failing to rest between efforts. Coaching should continue until the patient demonstrates correct technique.

A reasonable initial goal should require moderate effort but still be attainable. A goal that is too easy may not encourage adequate lung expansion. A goal that is too difficult may frustrate the patient and reduce cooperation. The goal can be adjusted as the patient improves.

Frequency of Incentive Spirometry

The exact number of breaths needed to prevent or treat atelectasis is not firmly established, but a common goal is at least 5 to 10 sustained maximal inspirations each hour while awake. The emphasis should be on quality, not speed.

Incentive spirometry should not become rapid repeated breathing. Some postoperative patients need 30 seconds to 1 minute of rest between maneuvers. This rest period helps prevent fatigue, dizziness, and ineffective breathing patterns.

The goal is intermittent maximal inspiration. Fast, partial breaths do not provide the same lung expansion benefit. The respiratory therapist should reinforce slow inhalation, sustained inspiration, brief breath hold, normal exhalation, and rest between attempts.

Follow-up is important. The respiratory therapist should reassess performance until the patient can use the device correctly. Once the patient demonstrates mastery, incentive spirometry may continue with less supervision, but the care team should still monitor progress and encourage regular use.

Deep Breathing and Coughing

Deep breathing and coughing are basic but important postoperative therapies. They are often used to promote lung expansion, mobilize secretions, and reduce the risk of atelectasis and pneumonia.

After thoracic surgery, patients may need coaching to breathe deeply because pain and fear can lead to shallow breathing. The respiratory therapist can teach diaphragmatic breathing, slow inspiration, breath holding, and controlled exhalation. These techniques help improve ventilation distribution and promote alveolar expansion.

Coughing should be included when secretions are present or when airway clearance is a concern. The patient should be positioned upright whenever possible. Upright positioning improves diaphragmatic movement, increases lung volumes, and makes coughing more effective.

Splinting can improve cooperation and reduce pain during coughing. The patient may hold a pillow or folded blanket against the incision. This provides support and helps the patient feel more secure while coughing.

Deep breathing and coughing are often part of a broader bronchial hygiene program. Depending on the patient’s condition, this may also include positioning, early mobilization, hydration, humidification, suctioning, airway clearance techniques, or mechanical support.

Early Mobilization

Early mobilization is another important part of postoperative respiratory care. Bed rest can contribute to decreased lung volumes, secretion retention, muscle weakness, and impaired ventilation. Getting the patient upright and moving as soon as clinically appropriate can support lung expansion and airway clearance.

Even simple activities can help. Sitting in a chair, changing position, standing, and walking can improve ventilation compared with lying flat in bed. Movement encourages deeper breathing and may help mobilize secretions.

The respiratory therapist may work with nurses, physical therapists, and other members of the care team to support safe activity. The patient’s oxygen needs, vital signs, pain level, surgical restrictions, and overall stability should be considered.

Early mobilization is not a replacement for breathing exercises, cough support, or oxygenation monitoring. Instead, it works alongside these therapies to reduce the risk of postoperative pulmonary complications.

Oxygenation Monitoring

Patients recovering from thoracic surgery may require supplemental oxygen, especially in the immediate postoperative period. Oxygenation should be monitored using pulse oximetry, clinical assessment, and arterial blood gases when indicated.

A falling SpO₂ may suggest hypoventilation, atelectasis, retained secretions, pneumonia, pulmonary edema, pneumothorax, or another complication. The respiratory therapist should not assume that oxygen alone solves the problem. Supplemental oxygen may improve saturation, but it does not correct airway obstruction, alveolar collapse, or poor ventilation.

The patient’s oxygen requirement should be interpreted in context. A patient who needs progressively higher oxygen flow after thoracic surgery may be developing a complication. Breath sounds, respiratory rate, work of breathing, chest movement, cough effectiveness, imaging findings, and blood gas results may help determine the cause.

In some cases, oxygenation problems improve with lung expansion therapy, coughing, secretion clearance, repositioning, or pain control. In other cases, the patient may need escalation to noninvasive ventilation, invasive mechanical ventilation, or further medical intervention.

Noninvasive Ventilation After Thoracic Surgery

Noninvasive ventilation may be considered in selected postoperative patients who develop acute respiratory failure after major abdominal or thoracic surgery. It can improve oxygenation and reduce the work of breathing in appropriate patients.

Some evidence suggests that noninvasive ventilation may reduce intubation rates and infections compared with standard oxygen therapy in certain postoperative respiratory failure cases. However, it should not be used automatically for every thoracic surgery patient. Patient selection is important.

The patient must be able to protect the airway, cooperate with the interface, and tolerate positive pressure. Severe vomiting, inability to clear secretions, hemodynamic instability, facial trauma, or reduced mental status may make noninvasive ventilation inappropriate.

The respiratory therapist should monitor the patient closely after starting noninvasive ventilation. Improvement should be seen in respiratory rate, work of breathing, oxygenation, comfort, and blood gas values when applicable. If the patient worsens or fails to improve, invasive ventilation may be needed.

Mechanical Ventilation and Thoracic Surgery

Some patients require mechanical ventilation after thoracic surgery. This may occur because of respiratory failure, anesthesia recovery, lung resection, trauma, severe hypoxemia, airway protection needs, or complex postoperative management.

In neonatal and pediatric care, postsurgical thoracic surgery may be an indication for mechanical ventilation. These patients may have limited respiratory reserve and require close monitoring of oxygenation, ventilation, airway pressures, and lung mechanics.

For adult patients, mechanical ventilation may be needed temporarily after major thoracic procedures or when complications develop. The ventilator strategy should account for the patient’s lung condition, surgical procedure, gas exchange, hemodynamics, and risk of barotrauma or volutrauma.

After lung surgery, the remaining lung tissue may be vulnerable to overdistention. Careful adjustment of tidal volume, pressure, oxygen concentration, and positive end-expiratory pressure is important. The respiratory therapist should monitor peak pressure, plateau pressure, oxygenation, carbon dioxide levels, and patient-ventilator synchrony.

Double-Lumen Endotracheal Tubes

Double-lumen endotracheal tubes are specialized airway devices used when lung separation or independent lung ventilation is needed. They are commonly associated with thoracic surgery because some procedures require one lung to be isolated while the other lung is ventilated.

A double-lumen tube has two separate lumens, allowing selective ventilation of each lung. This can be useful during procedures such as bronchoscopy, bronchoalveolar lavage, lobectomy, pneumonectomy, thoracoscopy, and certain esophageal or thoracic aortic surgeries.

The device allows the surgical lung to be deflated or isolated while the other lung maintains gas exchange. In some situations, the two proximal ends can be connected with an adapter so that one ventilator can ventilate both lungs when appropriate.

Several types of double-lumen tubes are described in respiratory care review material. The Carlens tube is designed for preferential intubation of the left bronchus. The White tube is used for preferential intubation of the right bronchus. Robertshaw tubes are available for right or left bronchial intubation.

Note: Double-lumen tubes are not routine airway devices. They are used when the clinical situation requires lung isolation, differential ventilation, or surgical access to one lung.

Limitations of Double-Lumen Tubes

Double-lumen tubes have important limitations. They are generally used only in adults because of their size. The smallest size may still be too large for pediatric patients.

Another limitation is increased airway resistance. Each lumen is smaller than the lumen of a standard endotracheal tube. Smaller internal diameter increases resistance to airflow, which can affect ventilation and increase the work required to move gas through the tube.

Secretion clearance can also be more difficult. A smaller suction catheter is needed because each lumen is narrow. Thick secretions may be harder to remove. The respiratory therapist must be aware of this limitation and monitor for signs of obstruction, increased airway pressure, decreased delivered volume, or impaired ventilation.

Correct placement is critical. Malposition can cause poor ventilation, hypoxemia, high airway pressures, or failure to isolate the intended lung. Placement is often confirmed using bronchoscopy and careful assessment of breath sounds, chest movement, oxygenation, and ventilator parameters.

Independent Lung Ventilation

Independent lung ventilation is a specialized technique in which each lung is ventilated separately. It requires a double-lumen endotracheal tube and, in many cases, separate ventilators for each lung.

This approach may be used when one lung is normal and the other lung is abnormal. The goal is to ventilate the healthier lung adequately while allowing the diseased or injured lung to receive different settings or recover. It may be considered after certain thoracic surgeries or in patients with severe unilateral lung disease.

Thoracic surgery indications may include pneumonectomy, selected lobectomies, thoracic aortic surgery, thoracoscopy, and some esophageal surgeries. Independent lung ventilation may also be used when the two lungs have very different compliance, resistance, or oxygenation needs.

Initial ventilator settings require careful thought. If a patient would normally receive a total tidal volume based on body size, each lung would normally receive a portion of that volume. When ventilating one lung independently, the normal lung should not receive the full total tidal volume intended for both lungs. Doing so may overdistend the normal lung.

For example, if an adult would normally receive about 800 mL total tidal volume, each lung would normally receive about 400 mL. During independent lung ventilation, the normal lung may initially receive about half the usual total tidal volume, with adjustments based on arterial blood gases, airway pressures, oxygenation, and clinical response.

Note: The respiratory therapist should reassess after initiation, including checking arterial blood gases when indicated. Ventilator settings may need adjustment based on PaO₂, PaCO₂, pH, oxygen saturation, lung mechanics, and hemodynamic status.

Pleural Disease and Thoracic Surgery

Thoracic surgery may also be involved in the management of pleural disease. The pleural space is the area between the visceral pleura covering the lung and the parietal pleura lining the chest wall. Conditions affecting this space can significantly impair breathing.

Examples include pneumothorax, pleural effusion, hemothorax, empyema, and bronchopleural fistula. Some pleural conditions require chest drainage, surgical repair, or other thoracic interventions.

A bronchopleural fistula is an abnormal connection between the bronchial tree and pleural space. It may lead to persistent air leak and difficulty maintaining lung expansion. In severe cases, thoracic surgery may be considered when other measures are not enough.

Patients with pleural disease may require chest tubes, suction, water seal drainage, oxygen therapy, ventilatory support, and close monitoring. The respiratory therapist should assess breath sounds, chest expansion, oxygenation, ventilator pressures, drainage system function, and signs of respiratory distress.

Thoracic surgery patients with pleural complications can be complex. They may have altered lung mechanics, air leaks, infection risk, reduced lung volume, and increased oxygen needs. Careful assessment and communication with the surgical team are essential.

Preoperative Assessment

Preoperative assessment is important for patients scheduled for thoracic surgery. The goal is to identify risk factors for postoperative pulmonary complications and establish a baseline for comparison after surgery.

The respiratory therapist may review the patient’s smoking history, chronic lung disease, cough, sputum production, exercise tolerance, oxygen use, recent infections, and previous anesthesia problems. Baseline vital signs, breath sounds, oxygen saturation, lung volumes, and pulmonary function data may also be helpful.

Patients with chronic obstructive pulmonary disease, asthma, restrictive lung disease, obesity, neuromuscular weakness, or a history of smoking may have increased risk. Poor nutritional status, advanced age, limited mobility, and prolonged surgery can also contribute to complications.

Preoperative assessment also provides an opportunity for education. The respiratory therapist can teach incentive spirometry, deep breathing, coughing, splinting, and the importance of early mobilization before the patient is recovering from anesthesia or experiencing postoperative pain.

Note: This early teaching can improve postoperative cooperation. A patient who already understands the purpose and technique of lung expansion therapy is more likely to perform it correctly after surgery.

Postoperative Respiratory Care

Postoperative care after thoracic surgery focuses on preventing complications, detecting problems early, and supporting recovery. The exact plan depends on the patient’s procedure, condition, and risk factors.

Important components include oxygenation monitoring, lung expansion therapy, coughing, secretion clearance, pain control support, early mobilization, and assessment for respiratory distress. The respiratory therapist should evaluate whether the patient can breathe deeply, clear secretions, maintain oxygenation, and participate in therapy.

Incentive spirometry may be used to encourage sustained maximal inspiration. Deep breathing exercises may be used to improve lung expansion. Splinted coughing may help clear secretions while reducing pain. Suctioning may be needed if the patient cannot clear secretions independently.

The respiratory therapist should also monitor for signs of atelectasis, pneumonia, pneumothorax, air leak, hypoxemia, or respiratory failure. Changes in breath sounds, respiratory rate, work of breathing, oxygen requirement, chest movement, or mental status should be addressed promptly.

Postoperative respiratory care requires teamwork. Pain control, mobility, fluid balance, nutrition, surgical status, and airway clearance all affect recovery. The respiratory therapist contributes by focusing on ventilation, oxygenation, lung expansion, and secretion management.

Exam-Relevant Points About Thoracic Surgery

Thoracic surgery is important for respiratory therapy exams because it connects several major content areas. These include patient assessment, postoperative care, lung expansion therapy, airway clearance, chest radiograph interpretation, oxygenation, mechanical ventilation, and special airway devices.

A classic exam pattern is surgery plus pain plus shallow breathing leading to atelectasis. The respiratory therapist should recognize that upper abdominal and thoracic surgery patients are at high risk because pain limits deep breathing and coughing.

Another key point is that atelectasis causes decreased lung volume. On chest radiograph, the mediastinum may shift toward the affected side. This helps distinguish atelectasis from conditions that push structures away.

For coughing after thoracic surgery, pain control and splinting are important. The patient should sit upright, support the incision with hands or a pillow, take a deep breath, and cough. If a normal cough is too painful, several smaller coughs may be used.

For incentive spirometry, the patient should inhale slowly and deeply, hold the breath briefly, exhale normally, and rest between attempts. Rapid repeated breathing is not the goal. A common recommendation is 5 to 10 sustained maximal inspirations each hour while awake.

For specialized thoracic procedures, double-lumen tubes and independent lung ventilation may appear on exams. Double-lumen tubes allow lung separation. Independent lung ventilation allows each lung to be ventilated differently, usually when one lung is normal and the other is abnormal.

Thoracic Surgery Practice Questions

1. What is thoracic surgery?
Thoracic surgery refers to surgical procedures performed inside the chest, including procedures involving the lungs, pleura, esophagus, mediastinum, diaphragm, and chest wall.

2. Why is thoracic surgery important in respiratory care?
Thoracic surgery is important because it can affect ventilation, oxygenation, cough strength, lung expansion, and secretion clearance.

3. What is one of the most common postoperative pulmonary complications associated with thoracic surgery?
Atelectasis is one of the most common postoperative pulmonary complications associated with thoracic surgery.

4. What is atelectasis?
Atelectasis is collapse or incomplete expansion of lung tissue, meaning some alveoli are not properly filled with air.

5. Why are thoracic surgery patients at increased risk for atelectasis?
They are at increased risk because pain, sedation, shallow breathing, impaired cough, and decreased lung volumes can reduce alveolar ventilation.

6. How does surgical pain contribute to postoperative atelectasis?
Pain can cause the patient to splint, breathe shallowly, avoid deep breaths, and cough less effectively, which increases the risk of alveolar collapse.

7. What does splinting mean after thoracic surgery?
Splinting refers to the patient limiting chest movement or supporting the incision to reduce pain during breathing or coughing.

8. Why does the location of the incision matter after surgery?
The closer the incision is to the diaphragm, the greater the risk of postoperative atelectasis because diaphragmatic movement and deep breathing may be impaired.

9. Which surgical patients are especially at risk for postoperative atelectasis?
Patients who undergo upper abdominal or thoracic surgery are especially at risk for postoperative atelectasis.

10. What are three factors that can promote compression atelectasis after surgery?
General anesthesia, sedation, and bed rest can promote compression atelectasis after surgery.

11. How can obesity increase the risk of atelectasis after thoracic surgery?
Obesity can limit diaphragmatic movement and reduce the patient’s ability to take deep breaths, increasing the risk of alveolar collapse.

12. Why can retained secretions contribute to atelectasis?
Retained secretions can obstruct airways, preventing ventilation beyond the blockage and causing alveoli to collapse.

13. What is the purpose of incentive spirometry after thoracic surgery?
The purpose of incentive spirometry is to encourage sustained maximal inspiration, improve lung expansion, and help prevent or reverse atelectasis.

14. When is incentive spirometry indicated?
Incentive spirometry is indicated when atelectasis is present or when conditions exist that predispose the patient to atelectasis, such as thoracic surgery.

15. What type of inspiration should be encouraged during incentive spirometry?
The patient should be encouraged to inhale slowly and deeply using diaphragmatic breathing and a slow-to-moderate inspiratory flow.

16. Why should incentive spirometry not be performed as rapid repeated breathing?
Rapid repeated breathing may lead to shallow, ineffective breaths instead of intermittent maximal inspiration, which is needed for lung expansion.

17. How often is incentive spirometry commonly recommended after surgery?
A common goal is at least 5 to 10 sustained maximal inspirations each hour while awake.

18. Why might a postoperative patient need rest between incentive spirometry maneuvers?
Some postoperative patients need 30 seconds to 1 minute of rest between maneuvers to avoid fatigue and maintain effective technique.

19. Why is preoperative teaching important for incentive spirometry?
Preoperative teaching helps the patient learn the technique before pain, sedation, and postoperative fatigue make learning more difficult.

20. What should the respiratory therapist do when setting an initial incentive spirometry goal?
The respiratory therapist should set a goal that requires moderate effort but is still attainable for the patient.

21. Why should the respiratory therapist observe the patient’s first incentive spirometry attempts?
The respiratory therapist should observe the first attempts to make sure the patient understands the technique and performs the maneuver correctly.

22. What is one of the most effective ways for an RT to teach incentive spirometry?
Demonstration by the respiratory therapist is often one of the most effective teaching methods.

23. What should the patient do after reaching maximal inspiration during incentive spirometry?
The patient should briefly hold the breath, then exhale normally and rest before repeating the maneuver.

24. What clinical history should make an RT suspect possible atelectasis?
Recent upper abdominal or thoracic surgery should make the RT suspect possible atelectasis, especially if the patient has shallow breathing or increased oxygen needs.

25. How can smoking history affect risk after thoracic surgery?
A history of cigarette smoking increases the risk of postoperative respiratory complications, including atelectasis and impaired secretion clearance.

26. What breath sound may be heard over an area of atelectasis as distal airways reopen?
Fine late-inspiratory crackles may be heard over the affected area as distal airways reopen during deep breathing.

27. What happens to the respiratory rate as atelectasis becomes more significant?
The respiratory rate often increases as atelectasis becomes more significant.

28. What breath sound change may occur when ventilation is reduced in part of the lung?
Diminished breath sounds may be heard over the affected area.

29. Why can atelectasis cause tachycardia?
Atelectasis can impair oxygenation, and tachycardia may occur as a response to hypoxemia.

30. What symptom may develop when atelectasis worsens after thoracic surgery?
Dyspnea may develop as atelectasis worsens and gas exchange becomes less effective.

31. What radiographic finding is commonly associated with atelectasis?
Atelectasis commonly appears as increased opacity with evidence of volume loss on a chest radiograph.

32. What may happen to the diaphragm on the affected side during atelectasis?
The diaphragm may elevate on the affected side because of decreased lung volume.

33. Which direction does the mediastinum shift with one-sided atelectasis?
The mediastinum may shift toward the side of atelectasis.

34. What may happen to rib spaces on the affected side during atelectasis?
The rib spaces may narrow because the affected lung region is not expanding normally.

35. What does decreased lung volume on a chest radiograph suggest in a postoperative patient?
Decreased lung volume may suggest atelectasis, especially after thoracic or upper abdominal surgery.

36. How can atelectasis differ from pneumothorax on chest radiograph?
Atelectasis causes volume loss and may shift the mediastinum toward the affected side, while a large pneumothorax may shift structures away.

37. How can atelectasis differ from pleural effusion on chest radiograph?
Atelectasis is associated with volume loss, while a large pleural effusion can increase pressure and push structures away from the affected side.

38. What are common causes of ineffective cough after thoracic surgery?
Pain, shallow breathing, reduced chest expansion, and weakness can contribute to ineffective cough after thoracic surgery.

39. Why is cough assessment important after thoracic surgery?
Cough assessment helps determine whether the patient can clear secretions effectively and avoid complications such as atelectasis or pneumonia.

40. What should the RT assess when evaluating cough effectiveness?
The RT should assess whether the cough is dry or productive, strong or weak, and whether secretions are being cleared.

41. Why is pain control important before coughing exercises?
Pain control is important because a patient in severe pain may not cooperate or generate an effective cough.

42. What position is recommended for teaching postoperative coughing?
The patient should ideally sit upright to improve lung expansion and cough effectiveness.

43. How can a patient splint the incision while coughing?
The patient can hold both hands or a pillow firmly against the incision to reduce pain and support the surgical area.

44. What should the patient do before coughing after thoracic surgery?
The patient should take as deep a breath as possible before coughing.

45. What can the patient do if one strong cough is too painful?
The patient may perform two or three smaller coughs if one strong cough is too painful.

46. What complications can result from ineffective coughing after thoracic surgery?
Ineffective coughing can lead to retained secretions, atelectasis, pneumonia, and hypoxemia.

47. Why is thoracic surgery included in adult medical or surgical scenarios?
Thoracic surgery may require the respiratory therapist to assess complications, recommend lung expansion therapy, manage oxygenation, and support ventilation.

48. What is the main respiratory care goal after thoracic surgery?
The main goal is to prevent, detect, and manage postoperative pulmonary complications.

49. What postoperative therapies may help reduce atelectasis risk?
Incentive spirometry, deep breathing, splinted coughing, secretion clearance, and early mobilization may help reduce atelectasis risk.

50. Why should preoperative screening be performed before thoracic surgery?
Preoperative screening helps identify patients at high risk for postoperative pulmonary complications and establishes a baseline for comparison.

51. Why is a baseline assessment useful before thoracic surgery?
A baseline assessment gives the respiratory therapist a point of comparison after surgery if the patient develops breathing problems.

52. What types of baseline information may be useful before thoracic surgery?
Baseline lung volumes, capacities, breath sounds, oxygenation status, cough strength, and pulmonary history may be useful.

53. Why is postoperative fatigue a barrier to incentive spirometry teaching?
Postoperative fatigue can make it harder for the patient to focus, follow instructions, and perform sustained maximal inspirations correctly.

54. What does incentive spirometry help increase across the alveoli?
Incentive spirometry helps increase transalveolar pressure gradients, which promotes lung expansion.

55. What is the goal of sustained maximal inspiration?
The goal is to expand the lungs more fully, improve alveolar ventilation, and help prevent or reverse atelectasis.

56. Why should the initial incentive spirometry goal not be too low?
A goal that is too low may provide little incentive and may lead to an ineffective maneuver.

57. Why should the initial incentive spirometry goal not be too high?
A goal that is too high may discourage the patient and reduce cooperation.

58. What patient abilities are needed for incentive spirometry to be effective?
The patient must be able to understand instructions, cooperate, and take a deep enough breath to perform the maneuver.

59. Why may incentive spirometry be ineffective in an uncooperative patient?
An uncooperative patient may not follow the correct technique or generate enough inspiratory effort to expand the lungs.

60. What is the purpose of a brief breath hold after inspiration during incentive spirometry?
A brief breath hold allows time for ventilation to distribute and may help improve alveolar recruitment.

61. What should the patient do after exhaling during incentive spirometry?
The patient should rest before repeating the maneuver to avoid rapid, shallow breathing.

62. Why is follow-up important after teaching incentive spirometry?
Follow-up helps ensure the patient continues using the correct technique and achieves an adequate inspiratory effort.

63. When may incentive spirometry be continued with less supervision?
It may be continued with less supervision once the patient demonstrates correct technique and adequate effort.

64. What is the relationship between shallow breathing and postoperative atelectasis?
Shallow breathing reduces alveolar expansion and can allow lung tissue to collapse.

65. How can sedation contribute to postoperative pulmonary complications?
Sedation can reduce alertness, respiratory drive, cough effectiveness, and the ability to take deep breaths.

66. How can general anesthesia contribute to atelectasis?
General anesthesia can reduce normal deep breathing patterns and promote airway closure or reduced ventilation in dependent lung regions.

67. Why does bed rest increase the risk of respiratory complications?
Bed rest can reduce lung expansion, promote secretion retention, and contribute to decreased ventilation.

68. Why are patients with neuromuscular weakness at risk after thoracic surgery?
Neuromuscular weakness can impair deep breathing, cough strength, and secretion clearance.

69. How does impaired diaphragmatic function affect postoperative breathing?
Impaired diaphragmatic function reduces the ability to take deep breaths and expand the lower lungs.

70. What role does early mobilization play after thoracic surgery?
Early mobilization helps improve lung expansion, reduce secretion retention, and support postoperative recovery.

71. Why should oxygen needs be monitored after thoracic surgery?
Increasing oxygen needs may indicate atelectasis, retained secretions, pneumonia, hypoxemia, or another developing complication.

72. Why should the RT not rely only on SpO₂ after thoracic surgery?
SpO₂ shows oxygenation but does not fully explain ventilation, secretion clearance, lung expansion, or the cause of respiratory difficulty.

73. What is postoperative respiratory failure?
Postoperative respiratory failure occurs when the patient cannot maintain adequate oxygenation or ventilation after surgery.

74. When may noninvasive ventilation be considered after thoracic surgery?
Noninvasive ventilation may be considered selectively in postoperative acute respiratory failure when the patient is appropriate for it.

75. Why is routine NIV not recommended for every thoracic surgery patient?
Evidence is insufficient to support routine NIV after major surgery, so it should be used selectively based on the patient’s condition.

76. What is one possible benefit of NIV in selected postoperative respiratory failure cases?
NIV may improve oxygenation and reduce the need for intubation in selected postoperative respiratory failure cases.

77. Why must the RT monitor a patient closely after starting NIV?
The RT must monitor for improvement in oxygenation, work of breathing, respiratory rate, comfort, and overall clinical status.

78. When might invasive mechanical ventilation be needed after thoracic surgery?
It may be needed if the patient develops severe respiratory failure, cannot protect the airway, or fails less invasive support.

79. Why might thoracic surgery patients require mechanical ventilation?
They may require mechanical ventilation due to postsurgical respiratory failure, impaired ventilation, hypoxemia, or complex lung management needs.

80. In neonatal and pediatric care, when may thoracic surgery relate to mechanical ventilation?
Postsurgical thoracic surgery may be listed as an indication for mechanical ventilation in neonatal and pediatric respiratory care.

81. What is a double-lumen endotracheal tube?
A double-lumen endotracheal tube is a specialized airway device that allows separate ventilation or isolation of the lungs.

82. Why are double-lumen tubes used during thoracic surgery?
They are used when one lung must be isolated or when independent lung ventilation is needed during certain procedures.

83. What does independent lung ventilation allow?
Independent lung ventilation allows each lung to be ventilated separately, often with different ventilator settings.

84. What type of procedures may require a double-lumen endotracheal tube?
Procedures such as bronchoscopy, bronchoalveolar lavage, lobectomy, pneumonectomy, thoracoscopy, and some esophageal surgeries may require one.

85. What is the purpose of lung isolation during thoracic surgery?
The purpose is to allow one lung to be treated, examined, deflated, or surgically managed while the other lung maintains ventilation.

86. What is the Carlens tube used for?
The Carlens tube is used to preferentially intubate the left bronchus.

87. What is the White tube used for?
The White tube is used to preferentially intubate the right bronchus.

88. What is a Robertshaw tube?
A Robertshaw tube is a double-lumen tube available for either right or left bronchial intubation.

89. Why are double-lumen tubes generally used only in adults?
They are generally used only in adults because the smallest size is still too large for smaller patients.

90. Why do double-lumen tubes increase airway resistance?
They increase airway resistance because each lumen has a smaller internal diameter than a standard endotracheal tube.

91. Why is suctioning more difficult with a double-lumen tube?
Suctioning is more difficult because a smaller-than-normal suction catheter must be used to fit through the narrow lumens.

92. What is one risk of using a double-lumen tube incorrectly?
Incorrect placement can result in poor ventilation, hypoxemia, high airway pressures, or failure to isolate the intended lung.

93. When is independent lung ventilation most useful?
It is most useful when one lung is relatively normal and the other lung is abnormal or requires separate management.

94. What is the main goal of independent lung ventilation?
The main goal is to ventilate the patient adequately through the healthier lung while allowing the injured or diseased lung to heal.

95. What thoracic surgery procedures may be associated with independent lung ventilation?
Pneumonectomy, some lobectomies, thoracic aortic surgery, thoracoscopy, and some esophageal surgeries may be associated with it.

96. Why should the normal lung not receive the full usual tidal volume during independent lung ventilation?
Giving the normal lung the full usual tidal volume can overdistend that lung and increase the risk of ventilator-induced injury.

97. In the textbook example, what initial tidal volume might one lung receive if the normal total tidal volume is 800 mL?
One lung might initially receive about 400 mL, which is roughly half of the usual total tidal volume.

98. Why should arterial blood gases be checked after starting independent lung ventilation?
ABGs should be checked to evaluate oxygenation, ventilation, acid-base status, and the need for ventilator adjustments.

99. How can thoracic surgery relate to bronchopleural fistula management?
Thoracic surgery may be considered in severe bronchopleural fistula management when other measures are not enough.

100. What is the overall respiratory therapist role after thoracic surgery?
The RT helps prevent, detect, and manage complications through assessment, lung expansion therapy, cough support, secretion clearance, oxygen monitoring, and ventilatory support when indicated.

Final Thoughts

Thoracic surgery can have a major effect on respiratory function because it often interferes with deep breathing, coughing, lung expansion, secretion clearance, and oxygenation. The most important postoperative concern is atelectasis, especially when pain, sedation, shallow breathing, or retained secretions are present.

Respiratory therapists help reduce this risk through preoperative teaching, incentive spirometry, splinted coughing, deep breathing, early mobilization, oxygenation monitoring, and careful assessment.

Some patients may also require noninvasive ventilation, mechanical ventilation, double-lumen tubes, or independent lung ventilation. Safe care depends on recognizing problems early and matching therapy to the patient’s condition.