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Agranulocytosis associated with aprindine and other antiarrhythmic drugs: an epidemiological approach

L. IBÁÑEZ, J. JUAN, E. PÉREZ, X. CARNÉ, J. R. LAPORTE
DOI: http://dx.doi.org/ 639-641 First published online: 1 May 1991

Abstract

The risk of agranulocytosis associated with anti-arrhythmic drugs has been assessed by studying previous drug exposure of all cases collected through a muiticentre surveillance network in a defined geographical area during the period 1980–1988. One hundred and eighty-one patients with agranulocytosis (<500 granulocytes mm−3 at least in two different blood counts) were interviewed with a structured questionnaire. Eight cases attributable to anti-arrhythmic drugs were identified, all of them related to aprindine. Data on the consumption of several anti-arrhythmic drugs (amiodarone, aprindine, quinidine, propafenone) were obtained in order to estimate the risk of agranulocytosis related with the previous use of these drugs. A relevant risk was identjfied only for aprindine, of the order of two cases per 1000 patient-years. Our data suggest that the risk of agranulocytosis associated with aprindine is lower than previously found.

  • Agranulocytosis
  • aprindine
  • anti-arrhythmic drugs

Footnotes

    • Accepted July 2, 1990.