Because pulmonary hypertension can be of five major types , a series of tests must be performed to distinguish pulmonary arterial hypertension from venous , hypoxic , thromboembolic , or miscellaneous varieties .
Because pulmonary hypertension can be of 5 major types , a series of tests must be performed to distinguish pulmonary arterial hypertension from venous , hypoxic , thomboembolic , or miscellaneous varieties .