The segmental level of spinal anaesthesia depends on:: (A) Volume of the local anaesthetic injected, (B) Specific gravity of the local anaesthetic solution, (C) Posture of the patient, (D) All of the above
Answer is D. * Factors affecting the height of block :- -- Volume of drug -- Baricity (Ratio of specific gravity of an agent to that of CSF). -- Position of the patient -- Intra-abdominal pressure -- Curvature of spine * Factors affecting duration of block :- -- Dose -- Concentration - - Drug (LA used) -- Added vasoconstrictors