Journal of the Indian Society of Toxicology

  • Year: 2014
  • Volume: 10
  • Issue: 2

Can Red Cell Distribution Width (RDW) Predict the Mortality in Organophosphorus and Carbamate Insecticide Poisoning?

  • Author:
  • R Umesh Babu1,, S Prathima2, MC Murali Mohan3
  • Total Page Count: 4
  • DOI:
  • Page Number: 19 to 22

1Dept of Forensic Medicine & Toxicology, Sri Devaraj Urs Medical College, Kolar, Karnataka

2Dept of Pathology, Sri Devaraj Urs Medical College, Kolar, Karnataka

3Dept of Forensic Medicine & Toxicology, Sri Devaraj Urs Medical College, Kolar, Karnataka

Abstract

Organophosphorus (OP) and carbamate (CM) insecticides are among the most toxic of pesticides that cause poisoning in humans, and are the most frequently encountered insecticides in India. They are inhibitors of acetylcholinesterase, OPs acting by irreversibly phosphorylating the enzyme, while CMs reversibly carbamylate it.

Red blood cell distribution width (RDW) is a measure of the variability in size of circulating erythrocytes. It is routinely reported as part of a complete blood count, but its use is generally restricted to narrowing the differential diagnosis of anaemia. Elevated RDW might indicate impaired production or increased destruction of red blood cells, which may reflect unfavourable physiologic conditions that may lead to adverse clinical outcomes. It is well known that RDW levels are affected by various conditions such as erythropoietin stress - during iron, vitamin B12, and folate deficiencies, oxidative stress, thrombocytopenia and inflammatory diseases.

The objective of this study was to explore the possibility of RDW being used as a predictor of mortality in cases of OP and CM poisoning in a South Indian population, free of any pre-existing disease, which may confound the RDW.

Keywords

Organophosphorus insecticide, OP insecticide, Carbamate insecticide, CM insecticide, Acetylcholinesterase, Red blood cell distribution width, RDW