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
Lignocaine in high dose produces 
Select and explain. 
A. Convulsion, B. Respiratory depression, C. Hypotension, D. All
D: All
Answer: D: All 
Explanation: A i.e. Convulsion; B i.e. Respiratory depression; C i.e. Hypotension Xylocaine is available in concentration of 5% (for subarachnoid-spinal anesthesia), 4% (topical) and .2% (2, 1.5, 1 and 0.5%) of which 0.5% is usually used for epidural. If it is asked that what is the max dose of Xylocaine with adrenaline the answer will be same i.e. 500 mgQ and ans. will be 300 mgQ when max dose of lignocaine without adrenaline is asked. Lidocaine is an amide and can l/t convulsions, bronchospasm, respiratory failure, depress hypoxia drive, and can cause apnea, bradycardia, hypotension & cardiac failureQ.