1.1 Primary pulmonary hypertension a) Sporadic disorder b) Familial disorder
1.2 Associated with a) Collagen vascular disease b) Congenital (right-left) systemic-pulmonary shunt c) Portal hypertension d) HIV-associated pulmonary hypertension e) Drugs f) Persisting PAH of the newborn
Pulmonary hypertension is classified into three clinical stages: Latent pulmonary hypertension is characterized when mean pulmonary arterial pressures (PAP) are below 21 mmHg with an exercise-induced increase to values above 30 mmHg. The patients suffer from dyspnea upon exercise. In manifested pulmonary hypertension, the mean PAP exceeds 25 mmHg at rest. Patients already suffer from dyspnea on light exercise. Severe pulmonary hypertension is characterized by a severely reduced cardiac output at rest, which cannot be increased upon exercise, due to the increase in right ventricular afterload. Thus, patients are unable to perform any physical activity without distress.
Was this article helpful?
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...