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Related Experiment Videos

[Diltiazem poisoning: hemodynamic aspects].

C Beauvoir1, D Passeron, G du Cailar

  • 1Département d'Anesthésie-Réanimation A, Hôpital Lapeyronie, Montpellier.

Annales Francaises D'Anesthesie Et De Reanimation
|January 1, 1991
PubMed
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A massive overdose of diltiazem and benzodiazepines in a post-myocardial infarction patient caused severe cardiac issues. Aggressive vasopressor and inotropic support ultimately restored sinus rhythm and improved hemodynamics.

Area of Science:

  • Cardiology
  • Clinical Toxicology
  • Pharmacology

Background:

  • A 50-year-old male with a recent myocardial infarction (MI) presented with a massive overdose of diltiazem, potassium clorazepate, and nordazepate.
  • The patient's history of MI complicated the management of the overdose.

Observation:

  • On admission, the patient exhibited severe hypotension (80 mmHg systolic), bradycardia with irregular rhythm (60 bpm), superficial tachypnea (40 cpm), and hypoxia (PaO2: 63.5 mmHg).
  • Electrocardiogram (ECG) showed complete sinus arrest in addition to signs of previous MI.
  • Initial treatments including gastric lavage, activated charcoal, atropine, and calcium chloride failed to correct the cardiac dysrhythmia.

Findings:

  • Mechanical ventilation and intensive hemodynamic support with isoproterenol, dobutamine, and noradrenaline were required to manage cardiovascular collapse and restore sinus rhythm.

Related Experiment Videos

  • A combination of noradrenaline and dobutamine, followed by adrenaline, was crucial in stabilizing the patient's hemodynamics.
  • Spontaneous sinus rhythm returned after 7 hours of intensive vasopressor and inotropic therapy.

    • Implications:

    • This case highlights the critical management of massive calcium channel blocker overdose, particularly in patients with compromised cardiac function.
    • The successful use of combined vasopressor and inotropic agents underscores their importance in managing severe overdose-induced cardiovascular collapse.
    • Understanding the interplay between cellular calcium dynamics and the adrenergic system is vital for treating such complex toxicological emergencies.