Papers And Originals

Lignocaine Therapy for Ventricular Ectopic Activity after Acute Myocardial Infarction: A Double-blind Trial

Br Med J 1971; 3 doi: https://doi.org/10.1136/bmj.3.5776.668 (Published 18 September 1971) Cite this as: Br Med J 1971;3:668
  1. M. P. Chopra,
  2. U. Thadani,
  3. R. W. Portal,
  4. Clive P. Aber

    Abstract

    The effectiveness of intravenous lignocaine in suppressing ventricular ectopic activity after acute myocardial infarction was examined in a double-blind trial in 82 patients. Whereas suppression of unifocal ventricular ectopics was achieved by lignocaine in 90% of patients, other forms of potentially more dangerous ectopic activity (multifocal or R-on-T ectopics) seemed more resistant to therapy. Cessation of ectopic activity was also observed in about one-third of the patients in the control group. The incidence of ventricular tachycardia and fibrillation and the mortality during and after the trial period were similar in the lignocaine-treated and control groups, whether or not the initial ventricular ectopics had been suppressed.

    This study provides no evidence to support the routine use of intravenous lignocaine in the management of ventricular ectopic activity after acute myocardial infarction.

    Footnotes

    • * This study formed the basis of a thesis by M. P. C. for the degree of M.PHIL. at the University of Leeds.