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Prognostic implications of hyperkalemia in toad toxin intoxication
1Department of Emergency Medicine, Taichung Veterans General Hospital, Taiwan, Republic of China.
Human & Experimental Toxicology
|August 4, 1998
Summary
Toad toxin ingestion can cause severe heart problems and death. Monitoring serum potassium levels is crucial for predicting prognosis and guiding aggressive treatment in toad poisoning cases.
Area of Science:
- Toxicology
- Cardiology
- Dermatology
Background:
- Toad toxins exhibit digitalis-like cardioactive effects, leading to arrhythmias and potential sudden death.
- A family ingested cooked toad soup for a skin condition, resulting in a cluster poisoning incident.
Observation:
- The youngest child (15 months) died from refractory bradyarrhythmias.
- A second child (20 months) presented with shock, hyperkalemia (7.3 mEq/L), and atrioventricular block, requiring intensive treatment including a temporary pacemaker.
- A 16-year-old boy experienced hyperkalemia (6.3 mEq/L) and bradycardia, while three adults had milder gastrointestinal and oral symptoms.
Findings:
- Serum potassium levels demonstrated prognostic significance in toad intoxication.
- Elevated serum potassium levels correlated with more severe cardiac manifestations and poorer outcomes.
- Serum potassium measurement is a readily available and convenient prognostic tool compared to serum digoxin levels.
Implications:
- Aggressive treatment strategies are essential when hyperkalemia is present in toad intoxication to prevent mortality.
- Early recognition of hyperkalemia can guide timely and intensive medical intervention.
- This study highlights the importance of considering toad toxin exposure in cases of unexplained cardiac arrhythmias, especially in regions where toad consumption is prevalent.