Copyright © 1991 by the European Society of Cardiology.
© 1991 The European Society of Cardiology
Agranulocytosis associated with aprindine and other antiarrhythmic drugs: an epidemiological approach
Servei de Farmacologia Clinica CS Vall d'Hebron, Barcelona, Spain
accepted 2 July 1990.
Correspondence: Prof Joan-Ramon Laporte, Servei de Farmacologia Clinica, CS vall d'Hebron, 08035 Barcelona, Spain
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 19801988. One hundred and eighty-one patients with agranulocytosis (<500 granulocytes mm3 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.
Key Words: Agranulocytosis aprindine anti-arrhythmic drugs
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