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ARTICLE |

Lidocaine in Cardiac Arrhythmias

James I. Grossman, MD; Lawrence A. Lubow, MD; Julian Frieden, MD; Ira L. Rubin, MD
Arch Intern Med. 1968;121(5):396-401. doi:10.1001/archinte.1968.03640050006002.
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Sixty unanesthetized patients with 74 cardiac arrhythmias received lidocaine intravenously in an average dose of 1.5 mg/kg in 30 seconds. Suppression or termination of ventricular arrhythmias occurred in more than 80% of the 33 patients whether they had an acute myocardial infarction, were receiving digitalis, or were not receiving digitalis or digitalis toxic. Only 15% (six out of 41 patients) of the supraventricular arrhythmias were affected. Minimal side effects, mainly drowsiness, appeared in 47% of the patients and lasted less than five minutes. Blood pressure changes were not significant and no hypotension or convulsions occurred. Continous infusion of lidocaine (1 to 3.5 mg/min) for up to five days, without side effects, suppressed ventricular arrhythmias in all 18 patients treated. Lidocaine appears effective in suppressing or terminating ventricular arrhythmias occurring in a variety of clinical conditions. It is only occasionally effective in atrial arrhythmias.

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