Pulmonary Edema I

Vocabulary flashcards derived from the lecture on pulmonary edema, explaining key terms and concepts related to fluid movement, gas diffusion, and the pathophysiology of the condition.

Pulmonary Edema

A condition characterized by excess fluid accumulation in the interstitial space and possibly the alveoli.

Hydrostatic Pressure

The pressure exerted by fluids in the blood vessels which can drive fluids out of capillaries.

Oncotic Pressure

The pressure exerted by proteins in the blood, which pulls water into the circulatory system.

Interstitial Fluid

The fluid that exists in the spaces between cells, playing a critical role in nutrient and waste exchange.

Re-absorption

The process by which fluid is returned from the interstitial space back into the blood vessels.

Lymphatic System

A part of the circulatory system that helps remove excess fluids from tissues.

Gas Diffusion

The movement of gases (like oxygen and carbon dioxide) across the alveolar membrane into and out of the bloodstream.

Surfactant

A substance that reduces surface tension in the alveoli, helping to maintain lung compliance.

Left Heart Failure

A condition where the left ventricle fails to pump blood effectively, leading to fluid buildup in the lungs.

Diffusion Capacity of the Lung (DL)

A measure of how well gases can diffuse across the alveolar membrane.

Interstitium

The space surrounding cells in the lungs where fluid can accumulate in pulmonary edema.

Diffusion Limited

A situation where gas exchange is restricted even under resting conditions, often seen in severe pulmonary edema.

Perfusion Limited

A condition where blood flow limits gas exchange, typically seen in mild to moderate pulmonary edema.