Primary pulmonary hypertension:

SOB, RVF, ECG: right axis
deviation, tall R in v1 v2, causes:
idiopathic, HTN, HIV, obesity
(YOUNG OBESE FEMALE),
portal hypertension. Dx. Echo,
Cardiac catheterisation (raised
pulmonary artery pressure). Rx:
O2, Ca channel blockers, iv
prostacyclin, oral anticoagulant,
phosphodiestrase inhibitors.