Long Q-T syndrome precipitated by atropine and hypokalemia

Area of Science:

• Pediatric Cardiology
• Clinical Toxicology
• Pharmacology

Background:

• Pesticide poisoning necessitates prompt medical intervention, often involving drugs like atropine sulfate.
• Long Q-T syndrome is a serious cardiac condition associated with prolonged ventricular repolarization.

Observation:

• A pediatric patient treated for pesticide poisoning developed Q-T interval prolongation and ventricular tachyarrhythmia.
• The cardiac abnormalities coincided with hypokalemia (low potassium levels) and atropine sulfate administration.

Findings:

• Discontinuation of atropine sulfate and correction of hypokalemia led to the resolution of ECG abnormalities.
• Atropine sulfate, particularly in the context of hypokalemia, is identified as a potential trigger for long Q-T syndrome.

Implications:

• Clinicians should consider atropine's potential to induce long Q-T syndrome in pediatric patients with electrolyte imbalances.
• This finding highlights the importance of monitoring potassium levels during atropine treatment in susceptible individuals.
• Further research is warranted to elucidate the precise mechanisms underlying atropine-induced cardiotoxicity in hypokalemic states.