As people age, the incidence of prostate hyperplasia increases. So patients under
Transurethral Resection of Prostate(TURP) or Holmium Laser Ennucleation of Prostate(HoLEP)
are mostly ole age people. Most old age patient has several underlying disease. So patients
can develop high mortality and morbidity. Most surgeries for Prostate Resection are taken
under Spinal anesthesia. Adequate block level for Prostate Resection is T10. But sometimes,
old age patients can develop severe complication after spinal anesthesia. So we started this
study to know the adequate drug concentration for Spinal anesthesia taken for Prostate
Resection surgery.