Toxicological diagnosis in the critical patient: The challenge

A high percentage of patients who survived poisoning will be transferred to the Intensive Care Unit (ICU) to continue their management in relation to the severity of the poisoning, and possible complications that arise in this scenario. The clinical results will depend on several factors, such as the ingested dose, the characteristics of the substance, the time of medical attention, and the pre-existing state of health of the patient. Objective: To review the clinical behavior of poisonings in the critically ill patient. Recent findings: The data bases that yielded relevant bibliographical results were Web of Sciences, Scopus, PubMed, SciELO, and bibliographic references published between 2012 and 2020 were chosen. Conclusions: The clinical behavior of poisonings in the critically ill patient is atypical. The intensivist must have an in-depth knowledge of the behavior and pathophysiology of the toxins since making a medical diagnosis on the stage of the critically ill patient is challenging. The integration of all possible medical tools is required to achieve this in the absence of clinical history, and the implementation of early management strategies is necessary to reach physiological restoration by using a continuous evaluation approach. The severity of poisoning in the critically ill patient demands interdisciplinary management that includes assessment by Clinical Toxicology.