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LETTER TO EDITOR
Year : 2012  |  Volume : 56  |  Issue : 2  |  Page : 207-208  

Acute aluminium phosphide poisoning: Can we predict survival?


Department of Forensic Medicine and Toxicology, Tehran University of Medical Sciences, Tehran, Iran

Date of Web Publication17-May-2012

Correspondence Address:
Hossein Sanaei-Zadeh
Department of Forensic Medicine and Toxicology, Tehran University of Medical Sciences, Hazrat Rasoul Akram Hospital, Niayesh Street, Sattar-Khan Ave., Postal Code: 1445613131, Tehran
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0019-5049.96319

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How to cite this article:
Sanaei-Zadeh H. Acute aluminium phosphide poisoning: Can we predict survival?. Indian J Anaesth 2012;56:207-8

How to cite this URL:
Sanaei-Zadeh H. Acute aluminium phosphide poisoning: Can we predict survival?. Indian J Anaesth [serial online] 2012 [cited 2019 Dec 9];56:207-8. Available from: http://www.ijaweb.org/text.asp?2012/56/2/207/96319

Sir,

I read with interest the study conducted by Mathai and Bhanu published in your journal. [1] So far, several similar studies have been performed to determine the risk factors of mortality among aluminium phosphide (ALP)-poisoned patients. Almost all of these studies have shown that the more the patient is ill on admission, the higher is the risk of death. [1],[2],[3],[4] But, I think that in this poisoning with such a high mortality rate, we should be able to predict the probability of survival instead of prediction of death. In other words, when the conscious ALP-poisoned patient or his/her relatives ask whether he/she would survive, we should be prepared to answer this question. I think this question is easy to be answered and depends on the fact that the lesser is the liberated phosphine from the tablets in the stomach, the higher is the survival rate. Therefore, if the patient vomits immediately after the ingestion due to the unpleasant taste and odor of the tablet, he/she will possibly survive. [4],[5] But, vomiting occurring in concordance with other signs and symptoms of poisoning can be a sign of severity of the poisoning and cannot predict the probability of survival. Also, if the patient has dissolved the tablet in water before ingestion [Figure 1], he/she is most likely to survive. This is because a great part of the phosphine gas has escaped before its consumption. Interestingly, some studies have shown that there is no association between ALP-ingested dose and mortality rate. [2] The question is, "Why?" This depends on the physical characteristics of the ALP tablets. In other words, if we have access to a sample of the ingested tablet [Figure 1], we can determine from the pores on its surface whether that tablet has been exposed or not and, therefore, predict the probability of the patient's survival. [6] In countries such as Iran, where ALP tablets are also known as rice tablets, its similar components are manufactured from the herbal materials that are not dangerous and will not cause death. Thus, if the patient has ingested from the latter type of the rice tablet, he/she will definitely survive. [6] In conclusion, if the patient has ingested a small amount of the tablet, has vomited immediately after the ingestion, has dissolved the tablet in water before its consumption and has used a herbal tablet or an exposed tablet whose phosphine gas has previously been eliminated, he/she will more likely survive. Elapsed time between the ingestion and hospital presentation as well as proper supportive care should certainly not be forgotten.
Figure 1: Tablets of aluminium phosphide: (a) in water while releasing phosphine gas, (b) just placed and (c) exposed form (porous feature)

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   References Top

1.Mathai A, Bhanu MS. Acute aluminium phosphide poisoning: Can we predict mortality? Indian J Anaesth 2010;54:302-7.  Back to cited text no. 1
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2.Shadnia S, Sasanian G, Allami P, Hosseini A, Ranjbar A, Amini-Shirazi N, et al. A retrospective 7-years study of aluminum phosphide poisoning in Tehran: Opportunities for prevention. Hum Exp Toxicol 2009;28:209-13.  Back to cited text no. 2
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3.Louriz M, Dendane T, Abidi K, Madani N, Abouqal R, Zeggwagh AA. Prognostic factors of acute aluminium phosphide poisoning. Indian J Med Sci 2009;63:227-34.  Back to cited text no. 3
[PUBMED]  Medknow Journal  
4.Shadnia S, Mehrpour O, Soltaninejad K. A simplified acute physiology score in the prediction of acute aluminium phosphide poisoning outcome. Indian J Med Sci 2010;64:532-9.  Back to cited text no. 4
[PUBMED]  Medknow Journal  
5.Akkaoui M, Achour S, Abidi K, Himdi B, Madani A, Zeggwagh AA, et al. Reversible myocardial injury associated with aluminum phosphide poisoning. Clin Toxicol (Phila) 2007;45:728-31.  Back to cited text no. 5
[PUBMED]  [FULLTEXT]  
6.Mehrpour O, Singh S. Rice tablet poisoning: A major concern in Iranian population. Hum Exp Toxicol 2010;29:701-2.  Back to cited text no. 6
[PUBMED]  [FULLTEXT]  


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