Local & Regional Anaesthesia · NEET PG Preparation Anaesthesia
A 35-year-old male undergoes open reduction and internal fixation of a distal radius fracture under an intravenous regional anaesthesia (Bier block).…
Practice question from Local & Regional Anaesthesia (NEET PG Preparation Anaesthesia), with the correct answer and a step-by-step solution.
easy · MCQ · Q-5F8EFA
A 35-year-old male undergoes open reduction and internal fixation of a distal radius fracture under an intravenous regional anaesthesia (Bier block). Which of the following local anaesthetics is considered absolutely contraindicated due to its high cardiotoxicity and central nervous system toxicity profile?
- A.Lidocaine
- B.Prilocaine
- C.BupivacaineCorrect answer
- D.Chloroprocaine
Solution
Bupivacaine is strictly contraindicated for intravenous regional anaesthesia (Bier block) because accidental early deflation of the tourniquet can lead to a massive systemic bolus, resulting in severe, refractory ventricular arrhythmias and cardiac arrest (cardiotoxicity exceeding CNS toxicity). Lidocaine and prilocaine are safely used.
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