In this prospective trial the effects of controlled hypotension with nitroglycerin during transurethral resection of the prostate (TORP) on blood loss, operating time and postope-rative catheter removal time were studied. General anaeshesia with controlled hypoten¬sion (GACH) was used in 15 patients; other 15 patients received only general anaesthesia (GA) and another 15 had epidural anaesthesia (EA). The mean time of resection under GACH (37+3 mins) was shorter than those of EA (40±3 mins) and only GA (41±3 mins), but these differences were not statistically signifi¬cant (p>0.05). The resected tissue for each minute in the group received GACH (0.71 g/ min) was significantly higher than those of the groups had only GA (0.54 g/min) and EA (0.43 g/min). Although mean blood loss per gram of resected tissue in the group received GACH was 21+2 ml, these were found as 39+3 ml and 48.3.ml in GA and EA groups respectively (p0.05). Bir dakikada rezeke edilen doku ağırlığı KHGA grubunda (0.71 g), GA (0.54 g) ve EA (0.43 g) gruplanndan anlamlı şekilde fazla bulundu (p0.05). Sonuç olarak, kardiak durumu stabil ve hipertansif BPH olgularında KHGA, TURP süresini kısaltabilir, kanama miktannı azaltabilir ve cerraha işlem sırasında optimum endoskopik görüntü sağlayabilir.