Post Spinal Anaesthesia Hypotension

This is a randomized, double-blinded controlled study that aims to estimate the effect of maternal body mass index on the prophylactic dose of norepinephrine infusion for preventing hypotension in parturient after spinal anesthesia.

Spinal anesthesia is commonly used in transurethral prostate resection (TUR-P) surgeries; however, post-spinal hypotension remains a frequent and clinically significant complication, particularly in elderly patients. Early prediction of hypotension may allow timely interventions and improve patient safety. This prospective observational study aims to evaluate the predictive value of preoperative ultrasound-based inferior vena cava collapsibility index (IVC-CI) and femoral vein collapsibility index (FVCI) for post-spinal hypotension in patients undergoing elective TUR-P under spinal anesthesia. Before spinal anesthesia, IVC and femoral vein measurements will be obtained using ultrasonography. Hemodynamic parameters will be recorded before and after spinal anesthesia, and the occurrence of hypotension will be assessed according to predefined criteria. The study seeks to compare the diagnostic performance of IVC-CI and FVCI in predicting post-spinal hypotension and to identify potential clinical predictors associated with hypotension in this patient population.

The goal of this clinical trial is to learn if intravenous dexamethasone is effective for prevention of post spinal hypotension in geriatric population undergoing orthopedic surgeries. The main question aim to answer is: Does intravenous dexamethasone in participants undergoing orthopedic procedures of lower limb under spinal anesthesia prevents post spinal hypotension? Researchers are comparing two groups of participants * Participants in (Dexamethasone Group) Group D are receiving intravenous dexamethasone 8mg preoperatively * Participants in (Placebo Group) Group P are receiving placebo preoperatively.