• Ahmet Sebe, Mehmet Oguzhan Ay, Umut Gumusay, Metin Topal, Mesude Atli, Ferhat Icme, and Salim Satar.
• Necip Fazil State Hospital, Emergency Medicine Service, Kahramanmaras, Turkey.
• Am J Emerg Med. 2013 Jun 1;31(6):953-7.

ObjectiveWe aimed to determine effectiveness of therapeutic plasma exchange (TPE) in patients with intermediate syndrome (IMS) due to organophosphate (OP) intoxication.MethodsPatients diagnosed with IMS due to OP intoxication were included in this prospective study. Therapeutic plasma exchange procedure was performed with fresh frozen plasma as a replacement fluid via Fresenius-AS-TEC 204 device by Therapeutic Apheresis Unit to patients who developed IMS during follow-up. Samples were taken from patient's blood and waste plasma collected in the device before and after TPE procedure to be studied in laboratory for detection of organic phosphate and pseudocholinesterase (PChE) levels. In this study, SPSS 18.0 software package was used for statistical analysis of the data obtained. Level of statistical significance was taken as P < .05 for all tests.ResultsOf all 17 patients, 4 (23.5%) were female, and 13 (76.5%) were male. A statistically significant decrease was detected in organic phosphate levels in the plasma of patients after TPE procedure (P = .012). A statistically significant increase was detected in PChE levels in the plasma of patients after TPE procedure (P = .014). Of 17 patients included in the study, 13 patients showed clinical improvement and were discharged after the TPE process.ConclusionIn our study, it was observed that a significant decrease in the level of blood plasma OP and a significant increase in the level of PChE were achieved with TPE process in the early period of IMS due to OP poisoning. This study indicates that TPE is one of the effective treatment options for IMS due to OP intoxication.Copyright © 2013 Elsevier Inc. All rights reserved.

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