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Delayed Lithium Reintoxication in a Case of Severe Multidrug Intoxication: A Case Study
Jiayi Liang1,2, Christiaan J van den Bout3, Tessa M Bosch1,4
1Department of Hospital Pharmacy, Maasstad Hospital, Rotterdam, the Netherlands.
Therapeutic Drug Monitoring
|May 30, 2023
Summary
Secondary lithium elevation after massive overdose can occur, even with initial treatment. Prompt continuous venovenous hemodialysis is crucial for managing severe lithium toxicity and preventing relapse.
Area of Science:
- Clinical Toxicology
- Pharmacology
- Nephrology
Background:
- Severe multidrug intoxication cases require careful management of individual drug toxicities.
- Lithium, nortriptyline, aripiprazole, lorazepam, and temazepam co-ingestion presents a complex toxicological challenge.
- Understanding drug interactions and elimination kinetics is vital in overdose scenarios.
Observation:
- Initial treatment of massive lithium ingestion led to decreased serum lithium levels.
- A significant secondary elevation of serum lithium occurred 28 hours post-ingestion, reaching toxic levels.
- The patient presented with a complex co-ingestion involving multiple psychotropic medications.
Findings:
- Continuous venovenous hemodialysis effectively reduced serum lithium levels to a nontoxic range.
- Secondary lithium level elevation is a potential complication of massive ingestions, particularly with anticholinergic co-ingestants.
- The case highlights the importance of anticipating and monitoring for delayed lithium toxicity.
Implications:
- Intensivists and pharmacists must be vigilant for secondary lithium elevation in massive overdose cases.
- Early initiation of clearance-enhancing therapies like continuous venovenous hemodialysis is critical for favorable outcomes.
- This case underscores the need for prolonged monitoring after significant lithium ingestion, especially when combined with other drugs.
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