This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Regional anaesthesia, Subject name: Anaesthesia
Most common complication of celiac plexus block 
Select and explain. 
A. Pneumothorax, B. Postural hypotention, C. Retroperitoneal hamorrhage, D. Intra_aerial injection
B: Postural hypotention
Answer: B: Postural hypotention 
Explanation: Postural hypotension : due to lumbar sympathetic chain blockade leading to upper abdominal vessel dilation and venous pooling. So intravenous fluids are required preblock