ABSTRACT
Pulmonary artery hypertension is a disorder with limited treatment options and poor prognosis. We studied the effect of tadalafil, a selective phosphodiesterase type 5 inhibitor, in patients with this disease. In fifty patients subjected to mitral valve surgery [26 males, 24 females] aged 19040 years, with pulmonary artery hypertension, 10 mg tadalafil single dose was given to 25 patients after induction of anesthesia, and its effect was compared to a placebo given to the other 25 patients, all fifty patients had a comprehensive Transoesophageal echo examination including tissue Doppler and Tie index. Tadalafil resulted in a marked improvement in right ventricular function as regards tissue Doppler and Tie index [0.3110.05] compared to [0.34 +/- 0.02] in control group [p value =0.01] and pulmonary artery pressure [52.6 +/- 12.17] compared to control group [59.60 +/- 11.31] [p value =0.04]. 10 mg Single dose tadalafil was well tolerated and had a beneficial effect in patients with pulmonary artery hypertension undergoing mitral valve surgery