Intoxication with ajmaline in an infant.

We present a case of overdosage of ajmaline in an infant. The appearance of atactic gait and clonic tonic seizures were followed by loss of consciousness, apnea, supraventricular tachycardia, left bundle-branch block, and a prolonged Q-T interval. Cardiopulmonary resuscitation, gastric lavage, and forced diuresis were followed by complete recovery. Continuous electrocardiographic monitoring is mandatory in these cases, and the use of a cardiac pacemaker, respirator, and therapy with antiarrhythmic agents should be considered.