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Functional Residual Capacity (FRC) And Pulmonary Vascular Resistance (PVR)

Cardiopulmonary physiology has always been an interest of mine. I've previously written about how cardiac output is affected by spontaneous versus positive pressure ventilation,...

Ventilation Modes Change Cardiac Output

Take a deep breath. Your diaphragm is contracting downward increasing your intrathoracic volume with a resulting decrease in pressure according to Boyle's Law. This...

Why Does Oxygen Therapy Cause Hypercapnia In COPD?

Ask young physicians why patients with chronic obstructive pulmonary disease (COPD) tend to retain CO2 (hypercapnia) when given oxygen therapy. I bet the majority will claim that supplemental...

Treating Emphysema with Gene Therapy

Cystic fibrosis and α1-antitrypsin deficiency are the two most common inherited lung diseases, and both of them happen to be caused by a known, single...

Lung Dissection

Today, we explored the incredibly unique structure of the lungs. Most of the tissues we've dealt with so far have been rather dense and/or...

ABOUT RISHI

Anesthesiology chief resident physician at Baylor College of Medicine and future combined fellow in critical care and cardiothoracic anesthesiology at Harvard looking to improve medical education and patient safety with technology and quality initiatives.