📊 Pharmaceutical Chemistry - Medicinal Chemistry 4
Q. Myocardial Na+ channel blockade by lignocaine has the following characteristic:
  • (A) It blocks inactivated Na+ channels more than activated channels
  • (B) It blocks activated Na+ channels more than inactivated channels
  • (C) It delays rate of recovery of Na+ channels
  • (D) It produces more prominent blockade of atrial than ventricular Na+ channels
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✅ Correct Answer: (A) It blocks inactivated Na+ channels more than activated channels

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