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
[{'content': 'A patient in ICU was on invasive monitoring with intra aerial canulation through right radial aery for last 3 days. Later he developed swelling and discolouration of right hand. The next line of management is \nSelect and explain. \nA. Stellate ganglion block, B. Brachial Block, C. Radial Nerve block, D. Celiac plexus block', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Stellate ganglion block The patient has developed vasospasm (reflex sympathetic dystrophy) as indicated by development of swelling & discolouration of hand Stellate (Cervicothoracic) Block in reality blocks upper thoracic and cervical ganglion. It is indicated in : - Reflex sympathetic dystrophyQ - Vasospastic disorder of upper extremityQ - Head, Neck, Arm & Upper chest pain', 'role': 'assistant'}]