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  • Title: Electrocardiographic abnormalities in acute heroin overdosage.
    Author: Glauser FL, Downie RL, Smith WR.
    Journal: Bull Narc; 1977; 29(1):85-9. PubMed ID: 585584.
    Abstract:
    Twenty-one 25 acutely overdosed heroin addicts had abnormalities noted on their admission electrocardiograms. The most common findings were nonspecific ST-T changes in 17 patients, sinus tachycardia in 11, and left or right atrial enlargement in 8. Five patients had more serious arrhythmias (4 atrial fibrillation and 1 ventricular tachycardia). For the entire group the initial PaO2 was 74.8 +/- 48.2 torr. This degree of oxygenation was only achieved with the use of high dose supplemental oxygen. The 5 patients with the more serious arrhythmias had comparable PaO2s but this was only achieved with higher supplemental oxygen concentrations. We conclude that electrocardiographic alterations (other than arrhythmias) are very common in acute heroin overdosage and may be related to hypoxemia. The abnormal cardiac rhythms may be due to the direct effects of heroin or its metabolites. Heroin addiction is associated with a multitude of medical complications which can affect various organ systmes including the heart (1). Within the last six years several reports have appeared documenting electrocardiographic abnormalities in heroin users (2-5). These studies dealt with either a small series of patients or patients who used methadone or heroin in a chronic fashion. No one, to our knowledge, has extensively studied the electrocardiographic changes which occur in patients with acute heroin overdosage. This retrospective analysis of the electrocardiograms (ECG), arterial blood gases and selected electrolytes in 25 consecutively hospitalized patients acutely overdosed on heroin is an attempt to correct this deficiency.
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