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  • Title: The incidence and significance of emesis associated with out-of-hospital cardiac arrest.
    Author: Simons RW, Rea TD, Becker LJ, Eisenberg MS.
    Journal: Resuscitation; 2007 Sep; 74(3):427-31. PubMed ID: 17433526.
    Abstract:
    STUDY OBJECTIVE: Studies have suggested that emesis may occur in up to a third of cardiac arrest patients. The goal of this investigation was to characterize the frequency, timing, and outcome association of emesis in persons suffering out-of-hospital cardiac arrest in order to understand the role and care-implications of emesis better. METHODS: We conducted a cohort study of persons 18 years and over suffering non-traumatic out-of-hospital cardiac arrests who received attempted resuscitation by paramedics in the study community from January 1, 2004 through December 31, 2005 (n=1009). The presence and timing of emesis were determined by paramedics and recorded on the Emergency Medical Services report form. We used logistic regression analyses to assess whether emesis was independently associated with survival to hospital discharge. RESULTS: The presence or absence of emesis was documented in 76% (1009/1333) of cases. Emesis was present in 32% (318/1009). Two-thirds (208/312) of emesis occurred prior to EMS arrival; 28% (88/312) of episodes occurred between EMT arrival and intubation; and 4% (13/312) occurred after intubation. After adjustment for potential confounders, the presence of emesis was associated with a decreased odds of survival to hospital discharge among all-rhythm arrest (Odds ratio (OR)=0.50 [0.28-0.89]) and ventricular fibrillation arrest (OR=0.52 [0.27-0.98]). CONCLUSION: Given the frequency of emesis, the potential that some portion of emesis may be related to care, and the adverse association between emesis and survival, approaches that treat or prevent emesis better may improve the chances of survival following out-of-hospital cardiac arrest.
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