Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

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Feld, G.K. et al.

Clinical electrophysiological effects of intravenous recainam: an antiarrhythmic drug under investigation for the treatment of ventricular and supraventricular arrhythmias.

This open-label, multicenter study was designed to assess the electrophysiological properties of intravenous recainam, an investigational Class I antiarrhythmic agent. In 25 patients undergoing electrophysiological studies for the evaluation of arrhythmias, recainam was administered intravenously in a loading infusion (0.1 mg/kg/min) for 40 minutes, followed by a maintenance infusion (0.02 mg/kg/min) until the completion of the study. Electrophysiological measurements were obtained at baseline, 30 minutes after initiation of the loading infusion, and 30 minutes after termination of the infusion during washout. Conduction intervals, refractory periods, and sinus node recovery times were measured during sinus rhythm and during atrial or ventricular pacing. Vital signs were obtained and recorded before, during, and after recainam infusion. The results showed no change in mean arterial pressure, but heart rate increased slightly by 4 beats/min following recainam infusion. Recainam produced a generalized slowing of intracardiac conduction. The mean intraatrial conduction time, measured at an atrial paced cycle length of 600 msec, increased during recainam loading infusion by 44%, from 38.8% +/- 2.8 to 53.0 +/- 5.4 msec; intranodal conduction time increased by 10%, from 102.0 +/- 5.5 to 112.1 +/- 5.2 msec; and infranodal conduction time increased by 31% from 53.1 +/- 3.0 to 70.7 +/- 3.8 msec. Slowed conduction persisted during washout. The mean right atrial effective refractory period was significantly prolonged (+7% at 600 msec cycle length and +8% at 450 msec cycle length, P less than 0.05 and P less than 0.01, respectively) during recainam loading and remained so during washout.(ABSTRACT TRUNCATED AT 250 WORDS)[1]

References

Clinical electrophysiological effects of intravenous recainam: an antiarrhythmic drug under investigation for the treatment of ventricular and supraventricular arrhythmias. Feld, G.K., Luceri, R.M., Greenspon, A.J., Singh, B.N., Horowitz, L.N., Capuzzi, D.M., Frame, V.B., Myerburg, R.J. Pacing and clinical electrophysiology : PACE. (1991) [Pubmed]

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