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Background and Aim: TURP is mostly applied on elderly patient who have hypertension and cardiac problem . Therefore , it becomes important to keep a stable anesthesia that will minimize the homodynamic difference .The purpose of this study was to find the ideal anesthesia for the TURP by comparing the three different regional anesthesia. Materials and Methods: Totally 93 ASA ІІ-ІІІ patients were hydratad with 500cc Normal Salin before regional anaesthesia . In group E ( n:31) epidural anaesthesia were achieved by applying 75mg bupivacaine heavy + 50µg fentanyl in the L3-L4 intervertebral space. In group SP ( n:31 ) 1 mg bupivacaine heavy 1000g fentanyl were used for spinal anesthesia (L3-L4 intervertebral space ) while in group SA( n:31) 10mg bupivacaine heavy +50µg fentanyl were used with saddle blockade. Systolic arterial pressure ( SAP ), heart rate ( HR ), peripheral oxygen saturation ( Spo2 ), serum sodium measurement was recorded before and after hydration and during operation. The motor block and sensory level have been measured. Results: Intraoperative SAP values were more stable than the other groups in group SA.The decrease in HR values were significant 15 minutes after prehydration in three groups ( P< 0/05 ) . Spo2 values of the groups were stable during the operation. The time to reach the maximum block was very short in patients in Group SA (P<0/0001 ).There was a statistically significant difference between the groups in terms of motor block values ( P<0/0001 ). No fully paralysed sample was seen in Group SA even though there was a sufficient surgical anaesthesia. Conclusion: Saddle block has some advantages compared to spinal and epidural anesthesia methods such as achieving adequate anesthesia , stable haemodynamic , the lower degree of motor blockage and no full blockage in patients. Saddle block is an ideal regional anesthesia method for TURP operation.

Keywords: : Epidural and spinal anesthesia; bupivacaine; TURP.

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