Learn what subcutaneous emphysema is, its causes, clinical signs, and why it matters in mechanical ventilation and respiratory care.
John Landry, BS, RRT
John Landry is a registered respiratory therapist from Memphis, TN, and has a bachelor’s degree in kinesiology. He enjoys using evidence-based research to help others breathe easier, live healthier, and improve their overall quality of life.
Cape Cyanosis: Clinical Presentation, Causes, and Treatment
Learn what cape cyanosis is, how it presents, its underlying causes, pathophysiology, and why it signals a serious oxygenation emergency.
Acute Bronchitis: Overview and Practice Questions (2026)
Learn about acute bronchitis, including causes, symptoms, treatment, and why it is important in respiratory care and clinical practice.
Are the Lungs a Muscle? (2026)
Learn whether the lungs are a muscle, how they function in breathing, and which muscles actually control airflow in the body.
PRN Meaning: Medical Abbreviation and Definition (2026)
Explore the medical abbreviation and meaning of PRN in healthcare, a Latin phrase that stands for “pro re nata,” which means “as needed.”
Respiratory Therapist Salary: Listed by State (2026)
Discover the average respiratory therapist salary for each state and the factors that affect the annual and hourly rates.
Phlegm After Eating: Causes, Treatment, and Prevention
Learn why phlegm increases after eating, including common triggers like reflux, food sensitivities, and respiratory conditions.
Monitoring During Mechanical Ventilation: An Overview (2026)
Learn how mechanical ventilation monitoring ensures patient safety by tracking ventilation, oxygenation, hemodynamics, and clinical trends.
The 7 Potential Benefits of Cloves for Lung Health (2026)
Discover the potential benefits of cloves for lung health, including anti-inflammatory, antioxidant, and immune-supporting properties.
Gastroesophageal Reflux Disease (GERD) and the Lungs (2026)
Learn what GERD is, how it affects the lungs, and why it matters in respiratory care, asthma, chronic cough, and aspiration risk.
Can a Mute Person Cough? (2026)
Learn whether a mute person can cough, how the cough reflex works, and why speech ability does not affect this protective airway response.
Lung Sounds: Types and Causes During Auscultation (2026)
Learn the types of lung sounds, what causes them, and how auscultation helps identify respiratory conditions early and accurately.
Vesicular Breath Sounds: Overview and Practice Questions
Learn what vesicular breath sounds are, how they form, and why changes in these soft, low-pitched sounds can signal early lung problems.
Bronchovesicular Breath Sounds: Overview and Practice Questions
Learn what bronchovesicular breath sounds are, where they’re normally heard, and why their presence elsewhere may signal early lung disease.
Bronchial Breath Sounds: Overview and Practice Questions
Learn what bronchial breath sounds are, how they form, and why hearing them in the lung periphery signals consolidation or atelectasis.
Pleural Friction Rub: Overview and Practice Questions (2026)
Learn what a pleural friction rub is, how it forms, and why this grating breath sound signals pleural inflammation needing evaluation.
Diminished Breath Sounds: Overview and Practice Questions
Learn what diminished breath sounds mean, why they occur, and how they help identify airflow issues or pleural space problems in patients.
Stridor (Lung Sound): Overview and Practice Questions (2026)
Learn what stridor is, why it occurs, and how to recognize dangerous upper airway obstruction for faster, more effective respiratory care.
Rhonchi (Lung Sounds): Overview and Practice Questions
Learn what rhonchi are, how they form, and what they reveal about mucus obstruction to improve respiratory assessment and patient care.
Crackles (Lung Sounds): Overview and Practice Questions
Learn what crackles are, why they occur, and how to assess them to better identify respiratory conditions during patient evaluation.