<prompt> For a 78 yr old man for trans urethral resection of prostate, ideal anesthetic method is spinal anesthesia, this is becauseGeneral anesthesia causes more bleeding than spinalSigns of hyponatremia can easily be detected under spinalSpinal anesthesia abolishes the obturator nerve stimulation by electro cauteryObstructive uropathy and renal failure may be associated with prostatic enlargement  <response>: TURP syndrome may occur at any time perioperatively and has been observed as early as few minutes after surgery has staed and as late as several hours after surgery has been completed. When under regional anesthesia, the patient characteristically complains of Dizziness Headache Nausea Tight feeling in the chest and throat Shoness of breath Restlessness Confusion Retching Abdominal paint thus regional anaesthesia is preferred. 