All are true about lignocaine except –: (A) Most commonly used anesthetic agent, (B) Effective for 45–60 minute, (C) Safe for person prone to malignant hyperthermia, (D) None
Answer is C. Lignocaine can precipitate malignant hyperthermia, therfore it should not be used in patients with history of malignant hyperthermia.
Lignocaine is the most commonly used anesthetic. Its duration of action is 45-60 min without adrenaline and 2-3 hours with adrenaline.