The dosage makes the poison - ECMO support considerations in poisoning

Area of Science:

• Toxicology
• Critical Care Medicine
• Cardiopulmonary Support

Background:

• Acute poisoning can cause life-threatening conditions requiring advanced life support.
• Extracorporeal membrane oxygenation (ECMO) data in poisoning is limited to case reports and series.
• Understanding ECMO's role in managing severe intoxications is crucial.

Purpose of the Study:

• To review the classification of toxic agents and their mechanisms of toxicity.
• To examine ECMO treatment strategies and mortality predictors in poisoning patients.
• To highlight ECMO's utility as a bridge to recovery or other therapies.

Main Methods:

• Literature review focusing on ECMO use in poisoning and overdose.
• Analysis of toxic agents, toxicity mechanisms, and treatment approaches.
• Identification of factors associated with mortality in ECMO-supported poisoning patients.

Main Results:

• Cardiovascular toxins (e.g., beta-blockers, TCAs) can cause shock/arrhythmias; respiratory toxins (e.g., opioids, paraquat) cause failure.
• ECMO serves as a bridge to recovery, transplantation, or adjunctive treatments.
• Severe acidosis (pH<7.1) and pre-ECMO renal replacement therapy predict mortality.

Conclusions:

• ECMO is a valuable, though underutilized, tool for severe poisoning, offering vital organ support.
• It stabilizes patients during toxin clearance or antidote administration, providing critical time for recovery.
• Further research is needed to address data gaps and better define ECMO's outcomes in intoxication management.