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The effect of bipolar and monopolar resectoscope use on optic nerve diameter in transurethral resection of the prostate

Ümran Karaca, Şeyda Efsun ÖZGÜNAY, Şermin Eminoğlu, Tuğba Onur, Ayşe Neslihan Balkaya, Buket Özyaprak, Sedat Öner, Mehmet Gamlı.

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Aim: The aim of this study was to investigate the effects of monopolar and bipolar techniques of TURP under spinal anesthesia on serum electrolytes and changes in hemodynamic parameters, and to determine intracranial pressure changes by measuring optic nerve diameter with ultrasonography.
Material and Method: Eighty ASA II-III patients under spinal anesthesia included in the study. The patients were divided into two groups as monopolar and bipolar according to the resectoscope technique of the surgeon. Optic nerve sheath diameter was measured with ultrasound and the levels of Na+, K+, Hb were analyzed before and after the operation. Also the mean arterial pressure, heart rate and peripheral oxygen saturation of the patients were recorded at regular time intervals, and the amount of irrigation solutions and intravenous volume administered; duration of operation were recorded.
Results: In this study, the MAP and HR of patients at all perioperative and postoperative time intervals were significantly lower than baseline values (p

Key words: TUR-P; optic nerve diameter; hyponatremia; spinal anesthesia.

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