This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia
True about subarachnoid block (spinal anesthesia): 
Select and explain. 
A. Cannot be used in infant & children, B. Can be given by unskilled doctor, C. May be used when I. V access is not possible for intravenous drugs, D. Hypotension is most common side-effect
D: Hypotension is most common side-effect
Answer: D: Hypotension is most common side-effect 
Explanation: 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 (bupivacaine)Hypotension is most common side-effect:Managed by preloading & intraoperative fluids vasopressors. For this good i.V access is very imPoant.