• Abuzer Coşkun, Fatma Ayşen Eren, Şevki Hakan Eren, and İlhan Korkmaz.
• Sivas Numune State Hospital, Sivas, Turkey.
• Am J Emerg Med. 2019 Jul 1; 37 (7): 1254-1259.

ObjectiveCarbon monoxide (CO) poisoning is very common worldwide. In this study, we aimed to evaluate the predictivity of neuro psychosis in carbon monoxide poisoning by the admission levels of red cell distribution (RDW), mean platelet volume (MPV) and troponin I levels which can be measured quickly and easily in the emergency department (ED).Patients And MethodsThis single center observational study included a total of 216 consecutive patients who presented to the ED due to CO poisoning between January 2009 and December 2013. The diagnosis of CO poisoning was made according to the medical history and carboxyhemoglobin (COHb) level of >5%. According to the carboxyhemoglobin levels, the patients were classified as mildly (COHb < 20%) and severely poisoned (COHb > 20%). In addition, patients were divided into 2 groups, i.e., those with positive (>0.05 ng/mL for our laboratory) and negative (<0.05 ng/mL for our laboratory) troponin levels.ResultsPatients mean age was 52.58 ± 10.58. 57.9% of the patients had high troponin levels and 51.9% were poisoned severely according to COHb levels. Patients with positive troponin and COHb had longer CO exposure time and higher neutrophil, lymphocyte, mean platelet volume (MPV), COHb and red cell distribution width (RDW) levels at the index admission following CO poisoning than patients with negative troponin (p < 0.05). Age, COHb level, CO exposure time, MPV and RDW (p = 0.001, p < 0.05) remained associated with an increased risk of troponin positivity following adjustment for the variables that were statistically significant.ConclusionsIn patients presenting to the ED with CO poisoning, RDW and MPV can be helpful for risk stratification of neuropsychosis.Copyright © 2018 Elsevier Inc. All rights reserved.

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