Learn how to identify foreign body aspiration on a chest X-ray, recognize key signs, and choose the right imaging for accurate diagnosis.
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.
Inspection and Physical Assessment in Respiratory Care
Learn what inspection means in respiratory assessment, including signs of distress, cyanosis, posture, chest movement, cough, and sputum.
Ventilation-Perfusion (V/Q) Scan: Uses and Key Findings
Learn what a ventilation-perfusion (V/Q) scan shows, how it helps detect a pulmonary embolism, and how the results are interpreted.
Ventilation-Perfusion (V/Q) Mismatch: Causes and Treatment
Learn what a ventilation-perfusion (V/Q) mismatch is, how it causes hypoxemia, and why it matters in respiratory care.
Ventilation-Perfusion (V/Q) Ratio: Overview and Key Concepts
Learn what the ventilation-perfusion (V/Q) ratio means, including high V/Q, low V/Q, dead space, shunt, and hypoxemia.
Respiration: Overview, Process, and Clinical Importance
Learn what respiration means, including ventilation, gas exchange, oxygen transport, carbon dioxide removal, and cellular metabolism.
ABG Oxygenation Interpretation: PaOâ‚‚, SaOâ‚‚, and Hypoxemia
Learn how to interpret ABG oxygenation using PaOâ‚‚, SaOâ‚‚, FiOâ‚‚, hypoxemia, A-a gradient, and the P/F ratio in respiratory care.
Bronchospasm: Causes, Signs, Treatment, and Key Concepts
Learn what bronchospasm is, what causes it, how it affects breathing, and how it is assessed and treated in respiratory care.
Ventricular Fibrillation (VF): Causes, Signs, and Treatment
Learn about ventricular fibrillation, including its causes, ECG signs, symptoms, treatment, and why rapid defibrillation is needed.
Helium Dilution in Pulmonary Function Testing (PFT)
Learn how helium dilution measures FRC, calculates lung volumes, and helps evaluate obstructive and restrictive disease.
Nitrogen Washout in Pulmonary Function Testing (PFT)
Learn how nitrogen washout measures FRC, evaluates lung volumes, and helps detect uneven ventilation and air trapping.
Strain-Gauge Pressure Transducer in Respiratory Care
Learn how strain-gauge pressure transducers work in invasive hemodynamic monitoring, including setup, leveling, zeroing, and accuracy.
Central Venous Pressure (CVP): Measurement and Key Concepts
Learn what central venous pressure (CVP) means, how it is measured, and how it helps assess preload, fluid status, and right heart function.
Lung Capacities: Measurements in Pulmonary Function Testing
Learn about lung capacities in pulmonary function testing, their normal values, and how they help identify respiratory disease patterns.
Lung Volumes: Measurements in Pulmonary Function Testing
Learn about lung volumes in pulmonary function testing, their normal values, and how they help identify respiratory disease patterns.
Cricoid Pressure During Intubation and Airway Management
Learn how cricoid pressure is used during intubation, including its purpose, technique, risks, and role in airway management.
Rapid Sequence Intubation (RSI): Procedure and Key Concepts
Learn about rapid sequence intubation (RSI), including indications, steps, medications, risks, and the role of respiratory therapists.
Pulmonary Contusion: Respiratory Care and Management
Learn about pulmonary contusion, including causes, symptoms, diagnosis, complications, and respiratory care management.
Tactile Fremitus: Assessment, Findings, and Clinical Meaning
Learn what tactile fremitus is, how it is assessed, and what increased or decreased findings mean in respiratory care.
Tracheostomy Button: Clinical Uses, Benefits, and Risks
Learn what a tracheostomy button is, how it maintains the stoma, supports airway access, and helps patients breathe and speak.