Intravascular Hemolysis in Aluminum Phosphide Poisoning

Management of Acute Aluminum Phosphide Poisoning: Has Anything Changed?

Due to its easy availability, rapid and severe toxicity, and no specific antidote, aluminum phosphide has emerged as a lethal toxin, commonly used for suicidal intent in agricultural communities. Despite various advances in medicine, this compound's toxicity is poorly understood, and it still has a very high case fatality rate with no definitive treatment options available. This review aims to understand the mechanism of toxicity, clinical toxidrome of acute aluminum phosphide poisoning, and the available therapeutic options, including recent advances. A literature review was performed searching PubMed, EMBASE Ovid, and Cochrane Library, using the following search items: ("aluminum phosphide poisoning" OR "aluminum phosphide poisoning toxicity" OR "aluminum phosphide ingestion") AND ("management" OR "therapy" OR "treatment"). Selected articles were discussed amongst all the authors to shape this review. High case fatality rate and lack of any specific antidote are persisting challenges. Therapeutic measures need to be implemented from all fronts - reducing easy access to the poison, developing less toxic alternatives for use as a pesticide, and more studies directed at developing an effective reversal agent for phosphine. The advent of promising agents like glucose-insulin-potassium infusion and lipid emulsion is a new ray of hope in the complete recovery in this fatal poisoning. The need of the hour is to find an agent that rapidly and effectively reverses aluminum phosphide's toxic effects. Large multicenter controlled trials are required to establish the role of glucose-insulin-potassium and lipid emulsion.

Clinical Profile and Treatment Outcome of Aluminum Phosphide Poisoning in Felege Hiwot Referral Hospital, Northwest Ethiopia: A Retrospective Study

Background

Aluminum phosphide (AlP) is an effective fumigant and rodenticide which is a commonly used agent for self-poisoning in parts of Ethiopia. AlP poisoning results in serious manifestations involving many vital organs and it has high mortality. Despite its high incidence and mortality, studies on AlP poisoning in Ethiopia are lacking. Our objective was to study the clinical profile and treatment outcome of AlP poisoning in Felege Hiwot Referral Hospital (FHRH), a major referral hospital in Ethiopia.

Methods

It is a retrospective study conducted over all consecutive AlP poisoning cases who presented to the emergency department (ED) of the hospital from March 2018 to August 2020. A questionnaire was used to collect data from patient medical records. All data were analyzed using SPSS 25.

Results

A total of 125 patients were studied. Females were 57.6% and males were 42.4%. Age of patients ranged from 12 to 60 with mean age 28.5 years. The average number of AlP tablets taken was 1.2 (3.6 gm) and the average time of arrival to hospital after AlP ingestion was 4.8 hours. Nausea and vomiting were the commonest presenting features seen in 74.4% of the cases followed by hypotension which was seen in half of the cases. A wide range of laboratory findings and complications were also observed. Cases of AlP poisoning with hypotension were managed in the ICU with dopamine infusion, magnesium sulphate, hydrocortisone, and calcium gluconate in addition to gastric lavage and fluid administration. Those cases without hypotension were managed with gastric lavage and maintenance fluid only. Overall mortality from AlP poisoning was 31.2%.

Conclusion

With a treatment protocol used in FHRH, mortality from AlP poisoning was 31.2%. Using this protocol in resource limited settings might give opportunities to reduce mortality from AlP poisoning.

The Molecular Mechanism of Aluminum Phosphide poisoning in Cardiovascular Disease: Pathophysiology and Diagnostic Approach

Nowadays, poisoning with metal phosphides, especially aluminum phosphide (ALP), is one of the main health threats in human societies. Patients suffer from significant complications due to this type of poisoning, and the heart is one of the main organs targeted by ALP. Therefore, in this study, we discussed the effect of phosphine on cardiac function. This study is based on data obtained from PubMed, between 2002 and 2020. The key keywords included "Aluminum phosphide," "Oxidative Stress," "Mitochondria," "Cardiovascular disease," and "Treatment." The results showed that ALP produced reactive oxygen species (ROS) due to mitochondrial dysfunction. ROS production leads to red blood cell hemolysis, decreased ATP production, and induction of apoptosis in cardiomyocytes, which eventually results in cardiovascular disease. Since ALP has the most significant effect on cardiomyocytes, the use of appropriate treatment strategies to restore cell function can increase patients' survival.

Inhalational Wheat-pill Poisoning: A Household Chemical Warfare Agent

Wheat pill and its active ingredient aluminum phosphide is one of the emerging causes of poisoning. The areas mainly hit are the ones where agriculture is the leading industry. The mechanism of action involves phosphine gas, which is released when the pill comes in contact with moisture or stomach acid; the resulting free radicals damage mitochondria. The cardiovascular system is the most severely hit with various presentations, including cardiac failure, arrhythmias, and eventually shock. We discuss a case of a middle-aged woman who suffered from inhalational poisoning from wheat pill while she was working in unventilated grain storage.