Pulmonary hypertension (PH) is a disease with multiple etiologies and is categorized into five broad groups. Of these groups, pulmonary arterial hypertension (PAH) is the most studied and ...

of 26 patients with pheochromocytoma had positive responses to pharmacologic testing with tyramine whereas only three (3 per cent) of 88 patients with other forms of hypertension had false ...

Weak: only small or nonrandomized trials available; Unknown: not enough data to determine benefit. ERA: Endothelin receptor antagonist; PDE5: Phosphodiesterase type 5; PH: Pulmonary hypertension.