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Effect of Antioxidants on the Outcome of Therapy in Paraquat-intoxicated Patients
Abstract
Department (PED) of Noor Teaching General Hospital, Isfahan, Iran.
Methods: We studied retrospectively medical records of 186 patients admitted to the PED in two different study periods: 157 patients were evaluated from 1985 to 2001 (first study period) in which patients received conventional treatment protocol consisting of fluid replacement, oral absorbents, haemodialysis, etc, Also, 29 other patients were assessed from 2001 to 2005 (second study period) in which vitamins C and E had been administered to the patients, in addition to the conventional protocol.
The patients' mortality rate after the first study period was compared to that of the second one, with regard to the impact of the additional therapeutic intervention (use of antioxidant vitamins).
Results: Most of the patients (40.5 %) had ingested more than 20 mL of 20 % paraquat solution and were admitted to the hospital during the first 4 h after exposure. Paraquat poisoning was more common in men (76.6 %), young adults in the age group 19 - 34 (47 %) and during summer (43.3 %). Mean (± SE) length of hospital stay was 62.6 ± 15.6 h. Overall mortality rates were 31 and 55.2 % in the first and second periods, respectively.
Conclusion: Although the addition of antioxidants (vitamins C and E) to the conventional therapy did not reduce the mortality rate, other dependent variables including different doses of antioxidants may be
considered for future studies.
