Monthly variations in the diagnosis of carbon monoxide exposures in the emergency department.

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Monthly variations in the diagnosis of carbon monoxide exposures in the emergency department.

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Title: Monthly variations in the diagnosis of carbon monoxide exposures in the emergency department.
Author: Partrick, M; Fiesseler, F; Shih, R; Riggs, R; Hung, O
Abstract: INTRODUCTION: Carbon monoxide (CO) poisoning is the leading cause of toxicological deaths worldwide. Symptoms may be subtle, contributing to its frequent delay in diagnosis. If a seasonal variation occurs, a heightened awareness during peak time may lead to improved recognition and diagnosis. STUDY OBJECTIVES: To determine whether monthly variations in CO poisoning occur in emergency departments. METHODS: Design: A multicenter retrospective emergency department (ED) cohort. STUDY SETTING: 23 New Jersey and New York emergency departments. SUBJECTS: Consecutive patients with the ICD-9 primary diagnosis of"toxic effects CO" from January 1, 2000 to October 31, 2006. Statistics: We tested for significant differences using chi-square and Student's t-test with alpha set at 0.5. RESULTS: There were 1,006 patients who were diagnosed in the ED with CO toxicity (0.024 percent of all ED patients). Mean age was 30 years (SD +/- 20), 54 percent were female, and Caucasians compromised 54 percent of participants. Thirty-nine percent of documented patients arrived via ambulance and 90 percent were subsequently discharged. Incidence of CO visits peaked in December (0.036 percent) and were least likely in May (0.011 percent). Mean monthly CO visits were statistically increased during October (p less than or equal to 0.0001), November (p = 0.008), December (less than 0.0001), January (p = 0.01), and March (p = 0.04). Statistically fewer case of CO exposure were diagnosed in May (p = 0.0003), June (p = 0.005), August (p less than or equal to 0.0001), and September (p = 0.002).
Description: Undersea and Hyperbaric Medicine : Journal of the Undersea and Hyperbaric Medical Society, Inc.
URI: http://archive.rubicon-foundation.org/10386
Date: 2009

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