• Critical care medicine · Dec 2022

    Variation in Bed-to-Physician Ratios During Weekday Daytime Hours in ICUs in Australia and New Zealand.

    • Hannah Wunsch, David V Pilcher, Edward Litton, Matthew Anstey, Allan Garland, and Hayley B Gershengorn.
    • Department of Critical Care Medicine, Sunnybrook Hospital, Toronto, ON, Canada.
    • Crit. Care Med. 2022 Dec 1; 50 (12): 173717471737-1747.

    ObjectivesTo determine common "bed-to-physician" ratios during weekday hours across ICUs and assess factors associated with variability in this ratio.DesignRetrospective cohort study.SettingAll ICUs in Australia/New Zealand that participated in a staffing survey administered in 2017-2018.PatientsICU admissions from 2016 to 2018.MethodsWe linked survey data with patient-level data. We defined: 1) bed-to-intensivist ratio as the number of usually available ICU beds divided by the number of onsite weekday daytime intensivists; and 2) bed-to-physician ratio as the number of available ICU beds divided by the total number of physicians (intensivists + nonintensivists, including trainees). We calculated the median and interquartile range (IQR) of bed-to-intensivist ratio and bed-to-physician ratios during weekday hours. We assessed variability in each by type of hospital and ICU and by severity of illness of patients, defined by the predicted hospital mortality.InterventionsNone.Measurements And Main ResultsOf the 123 (87.2%) of Australia/New Zealand ICUs that returned staffing surveys, 114 (92.7%) had an intensivist present during weekday daytime hours, and 116 (94.3%) reported at least one nonintensivist physician. The median bed-to-intensivist ratio was 8.0 (IQR, 6.0-11.4), which decreased to a bed-to-physician ratio of 3.0 (IQR, 2.2-4.9). These ratios varied with mean severity of illness of the patients in the unit. The median bed-to-intensivist ratio was highest (13.5) for ICUs with a mean predicted mortality > 2-4%, and the median bed-to-physician ratio was highest (5.7) for ICUs with a mean predicted mortality of > 4-6%. Both ratios decreased and plateaued in ICUs with a mean predicted mortality for patients greater than 8% (median bed-to-intensivist ratio range, 6.8-8.0, and bed-to-physician ratio range of 2.4-2.7).ConclusionsWeekday bed-to-physician ratios in Australia/New Zealand ICUs are lower than the bed-to-intensivist ratios and have a relatively fixed ratio of less than 3 for units taking care of patients with a higher average severity of illness. These relationships may be different in other countries or healthcare systems.Copyright © 2022 by the Society of Critical Care Medicine and Wolters Kluwer Health, Inc. All Rights Reserved.

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