Learn what a mechanical ventilator is, how it works, and why it’s used to support breathing in critically ill patients.
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.
Does Yellow Mucus Mean You’re Getting Better? (2026)
Does yellow mucus mean you’re getting better? Learn what the color of your mucus says about your health and recovery.
Dry Cough: Symptoms, Causes, Treatment, and Home Remedies
Dry cough symptoms and causes explained. Discover proven treatments, natural home remedies, and when it’s time to see a doctor.
Mucus in Throat: Causes, Treatment, and Home Remedies (2026)
Learn what causes mucus in the throat and discover effective treatments and home remedies for lasting relief and comfort.
Physical Principles of Respiratory Care: Key Concepts
Learn the physical principles of respiratory care, including gas laws, pressure, flow, humidity, aerosols, and mechanical ventilation.
High-Flow Nasal Cannula (HFNC): An Overview (2026)
Learn how high-flow nasal cannula (HFNC) delivers heated, humidified oxygen to support patients with respiratory distress.
Lung Consolidation: Overview and Practice Questions (2026)
Learn about lung consolidation, including its causes, symptoms, diagnosis, radiographic findings, and treatment options.
Top 10 Natural Ways to Strengthen Your Lungs (2026)
Discover the best natural ways to strengthen your lungs and improve breathing with simple, science-backed daily habits.
Exercise and Lung Health: How They’re Connected (2026)
Learn how exercise strengthens lung health, boosts breathing efficiency, and protects against respiratory decline over time.
ABG Problems: Diagnosis and What Comes Next (2026)
Discover the right steps to take after identifying ABG problems—move confidently from diagnosis to effective treatment.
Premature Lung Aging Due to Inhaled Environmental Toxins
How inhaled toxins like smoke and pollution can speed up lung aging and damage respiratory health prematurely.
Glasgow Coma Scale (GCS): Overview and Practice Questions
Learn how the Glasgow Coma Scale (GCS) is used to assess consciousness, guide treatment, and support airway decisions in critical care.
Advance Directive: The Role in Respiratory Therapy (2026)
Learn what respiratory therapists need to know about advance directives, including DNR, DNI, and ethical care decisions.
Advanced Cardiovascular Life Support (ACLS): An Overview
Learn what Advanced Cardiovascular Life Support (ACLS) is and why it’s essential for respiratory therapists in critical care settings.
Air Bronchogram: Key Imaging Sign of Lung Disease (2026)
Learn what an air bronchogram is, what causes it, and why it’s an important radiologic sign in diagnosing lung diseases.
What Do Healthy Lungs Look Like? (2026)
Explore the visual characteristics of healthy lungs and understand the signs of optimal respiratory health.
How to Calculate Pack Years: A Step-by-Step Guide (2026)
Learn how to calculate pack years to assess smoking history and its impact on lung health with this step-by-step guide.
What is an Oxygen Face Tent? (2026)
Explore what an oxygen face tent is and how it delivers comfortable oxygen therapy for patients who can’t use masks or cannulas.
What is a Bubble Humidifier? (2026)
Learn more about bubble humidifiers, their usage in oxygen therapy, operation principles, troubleshooting, and maintenance.
Top 10 Worst Foods for Lung Health to Avoid (2026)
Discover the worst foods for lung health that can trigger inflammation, worsen breathing, and increase the risk of respiratory issues.