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

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Short-term myocardial uptake of lidocaine and mexiletine in patients with ischemic heart disease.

Determination of short-term myocardial drug uptake and subsequent redistribution was performed in 27 patients with ischemic heart disease for the antiarrhythmic agents lidocaine and mexiletine, using frequent simultaneous measurements of drug concentration in aortic and coronary sinus blood, combined with measurement of coronary sinus blood flow after intravenous bolus injection of the drug. Maximal myocardial drug content per unit resting coronary sinus blood flow (MDC:F) was significantly greater in patients in whom coronary sinus pacing at 100 beat/min was performed during the initial period of drug uptake. Maximal myocardial drug content occurred after 2.4 +/- 0.2 (SEM) for lidocaine and after 5.5 +/- 0.6 min for mexiletine (p less than .001), and pacing did not affect time to maximum myocardial drug content. In nonpaced, but not paced, patients maximal MDC:F was greater in the lidocaine group than that in the mexiletine group. The subsequent efflux of lidocaine from the myocardium was more rapid that that of mexiletine in both paced and nonpaced groups.[1]

References

  1. Short-term myocardial uptake of lidocaine and mexiletine in patients with ischemic heart disease. Horowitz, J.D., Dynon, M.K., Woodward, E., Sia, S.T., Macdonald, P.S., Morgan, D.J., Goble, A.J., Louis, W.J. Circulation (1986) [Pubmed]
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