The most significant feature of the antiarrhythmic action of lignocaine is: A. Suppression of phase-4 depolarization in ventricular ectopic foci B. Prolongation of action potential duration C. Prolongation of effective refractory period D. Depression of membrane responsiveness

The most significant feature of the antiarrhythmic
action of lignocaine is:
A. Suppression of phase-4 depolarization in
ventricular ectopic foci
B. Prolongation of action potential duration
C. Prolongation of effective refractory period
D. Depression of membrane responsiveness
by

1 Answer

Answer :

A. Suppression of phase-4 depolarization in
ventricular ectopic foci
by

Related questions

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Lignocaine is the preferred antiarrhythmic for emergency control of cardiac arrhythmias following acute myocardial infarction because: A. It has a rapidly developing and titratable antiarrhythmic action B. It causes little myocardial depression and hypotension C. It has broad spectrum antiarrhythmic efficacy in atrial as well as ventricular arrhythmias D. Both ‘A’ and ‘B’ are correct

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ignocaine is effective in the following cardiac arrhythmia(s): A. Atrial fibrillation B. Paroxysmal supraventricular tachycardia C. Digitalis induced ventricular extrasystoles D. All of the above

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