Learn how water vapor pressure affects pulmonary physiology, gas exchange, humidification, and oxygen delivery in 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.
Haldane Effect: Carbon Dioxide Transport in Respiratory Care
Learn how the Haldane effect influences COâ‚‚ transport, gas exchange, and oxygen therapy in respiratory care and clinical practice.
Why is My Humidifier Making Noise? (2026)
Why is your humidifier making noise? Discover common causes and easy fixes to keep your humidifier running quietly and efficiently.
Work of Breathing (WOB): Overview and Practice Questions
Learn what work of breathing is, what increases it, and why it’s important in respiratory care and ventilator management.
What Does a Popped Vein Look Like? (2026)
Learn what a popped vein looks like, including common symptoms, causes, and when to seek medical attention for proper care and recovery.
Is DuoNeb a Bronchodilator? (2026)
Learn whether DuoNeb is a bronchodilator, how it works to open airways, and how it helps treat COPD, asthma, and bronchospasm symptoms.
Ketogenic Diet for Asthma: Can It Help Alleviate Symptoms?
Learn if the ketogenic diet may help improve asthma symptoms, reduce inflammation, and support better breathing and overall asthma control.
How to Relieve Chest Pain Due to Cold Weather (2026)
Learn how to relieve chest pain caused by cold weather with simple tips to protect your heart, lungs, and overall respiratory health.
Can COPD Cause Fatigue? Causes and Treatment (2026)
Learn how COPD can cause fatigue and why breathing difficulties, low oxygen levels, and flare-ups can lead to persistent tiredness.
Red Blood Cells (Erythrocytes): Overview and Practice Questions
Learn what erythrocytes (red blood cells) are, their role in oxygen transport, and why they are important in respiratory care.
White Blood Cells (Leukocytes): Overview and Practice Questions
Learn what leukocytes are, their role in immune defense, and why white blood cells matter in respiratory care and lung disease.
Can Asthma Turn into COPD? (2026)
Learn whether asthma can turn into COPD and how long-term asthma may lead to lasting airway damage and COPD-like symptoms.
Coughing So Hard You Throw Up: Causes and Treatment (2026)
Learn why severe coughing can trigger vomiting, common causes behind it, and when this symptom may signal an underlying health issue.
Why Do Alcoholics Cough So Much? (2026)
Learn why chronic alcohol use causes persistent coughing, airway irritation, reflux, infections, and long-term respiratory problems.
Where Does Phlegm Come From? (2026)
Learn where phlegm comes from, why the body produces it, and what changes in mucus can reveal about your respiratory health.
What Can You Add to Humidifier Water? (2026)
Learn what you can safely add to humidifier water, which additives to avoid, and how to protect respiratory health and indoor air quality.
Coughing Up Lumps of Jelly: Causes, Risks, and Treatment
Learn what coughing up lumps of jelly means, common causes, and when thick, jelly-like mucus may signal a serious health issue.
Cardiac Tamponade: Overview and Practice Questions (2026)
Learn what cardiac tamponade is, how it affects breathing and circulation, and why early recognition is critical in respiratory care.
Nebulizer: Overview and Practice Questions (2026)
Learn how nebulizers work, their types, performance factors, infection risks, and why they are essential in respiratory care.
Labored vs. Unlabored Breathing: What’s the Difference?
Learn the key differences between labored and unlabored breathing and how each pattern signals normal breathing or respiratory distress.