Pulmonary edema

Permeability edema plays an important role in the development of pulmonary hypertension. It is often associated with abnormal left heart function, for example left ventricular failure and mitral valve disease. Blood volume and vascular resistance within the pulmonary circulation are directly dependent upon left ventricular end-diastolic pressure. After initial compensation and pulmonary congestion, which can be visualized radiographically and is a typical feature of left heart failure, fluid shift occurs across the capillary endothelium as determined by the imbalance between hydrostatic and colloid osmotic pressures across the capillary wall. Pulmonary hypertension results from mechanical compression of the vessels and, in severe cases, is augmented by hypoxia and respiratory acidosis when fluid shifts lead to alveolar flooding, thereby limiting gas exchange. In most cases pulmonary hypertension resolves upon reversibility of the underlying pathophysiological process, once a diagnosis has been made and appropriate therapy initiated.

Blood Pressure Health

Blood Pressure Health

Your heart pumps blood throughout your body using a network of tubing called arteries and capillaries which return the blood back to your heart via your veins. Blood pressure is the force of the blood pushing against the walls of your arteries as your heart beats.Learn more...

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