<p><strong>Symptoms</strong>: Hypotensive collapse, convulsions, cardiac arrhythmias, acidosis and coma.<br />
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<strong>Management</strong>: Gastric lavage should be carried out as soon as possible. Treatment is supportive and symptomatic with ECG monitoring. Intubate and ventilate the patient before convulsions develop. If convulsions occur, treat with IV diazepam. Treatment should be continued for at least 3 days even if the patient appears to have recovered, due to the long half life of trimipramine.</p>