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ICU administration · Overnight intensivist presence

Kerlin 2013 randomised trial

A randomized trial of nighttime physician staffing in an intensive care unit

Kerlin 2013 trial design and results
Design Randomised controlled trial
Treatment In-hospital intensivist present overnight
Control Intensivist available by telephone overnight
Population 1598 patients in an academic medical intensive care unit
Follow-up Hospital discharge
Primary endpoint ICU length of stay
Result Patients admitted on intervention days were exposed to nighttime intensivists on a median 100% of nights versus 0% on control days (p<0.001). Despite that, nighttime intensivist staffing did not significantly affect ICU length of stay (median 52.7 hours overall), ICU mortality (18% overall) or any other outcome. Median APACHE III score was 67.
Secondary endpoints ICU and in-hospital mortality, readmission, discharge disposition

In an academic medical ICU in the United States, nighttime in-hospital intensivist staffing did not improve patient outcomes.

The trial authors, in the published abstract

How it has aged

Expensive, widely assumed to be beneficial, and randomised only once. The setting matters: an academic unit with resident cover overnight already had experienced clinicians present, so the marginal value of the consultant was small.

Publications

A randomized trial of nighttime physician staffing in an intensive care unit

Kerlin MP, Small DS, Cooney E, et al. A randomized trial of nighttime physician staffing in an intensive care unit. N Engl J Med 2013 Jun 6;368(23):2201-9.

  • No improvement in ICU length of stay or mortality
  • Conducted in an academic unit with existing overnight resident cover