<prompt> True about subarachnoid block spinal anesthesia:Cannot be used in infant childrenCan be given by unskilled doctorMay be used when I. V access is not possible for intravenous drugsHypotension is most common side-effect  <response>: Ans. D. Hypotension is most common side-effectSubarachnoid block:Most commonly used anaesthetic techniqueAdult level is usually L3-4Indications:Ohopaedics surgery general surgery pelvic perineal, gynecological obstetrical surgery urological surgeries etc.,Most commonly drugs used in India are- xylocaine lignocaine Sensoricaine bupivacaineHypotension is most common side-effect:Managed by preloading intraoperative fluids vasopressors. For this good i.V access is very imPoant. 