Critical care in the emergency department

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Abstract
Objectives Emergency departments serve many functions in the current U.S. healthcare system, including initial management of patients with critical illnesses and primary care for a growing proportion of the population. Overcrowding of emergency departments is a growing problem. Delays in admitting patients to inpatient units have been reported as a contributing factor to overcrowding. To date, the effect of the critically ill patients on the emergency department has not been fully described. It was the purpose of this study to examine the incidence of critical illness in the emergency department and its total burden as reflected in emergency department length of stay. Design Prospective, cohort study in 17,900 emergency department patients. Setting Single, not-for-profit teaching hospital. Patients All patients admitted to the emergency department during the period of April 1, 1991 to March 31, 1992. Interventions None. Measurements and Main Results Date and time of arrival in the emergency department and time of discharge, death, or admission to an inpatient unit were recorded. Patients admitted to intensive care units/special care units from the emergency department were defined as critically ill. All other patients were classified as noncritically ill. Emergency department length of stay was calculated as the time from arrival in the emergency department until discharge, death, or admission to an inpatient unit. Differences in length of stay were determined using Kruskal-Wallis analysis by ranks. The study population totaled 17,900 patients: 8.5% (n = 1,527) critically ill patients, 61.1% (n = 10,930) discharged patients, and 30.4% (n = 5,443) noncritically ill admitted patients. Mean emergency department length of stay for the critically ill patients was 145.3 ± 89.6 mins (maximum length of stay, 655 mins), and for the noncritically ill patients, mean stay was 153.1 ± 91.9 mins (maximum length of stay, 781 mins) (p < .0003). During the study period, 154 patient-days of emergency department critical care were provided. Conclusions Critically ill patients constitute an important proportion of emergency department practice and may remain in the emergency department for significant periods of time. Solutions to emergency department overcrowding may include alternatives for continuing management of critically ill patients. Given the realities of emergency department practice, emergency medicine practitioners should receive training in the continuing management of critically ill patients.

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