Sedation practices and associated clinical outcomes among adult ICU patients managed by advanced practice providers versus resident physicians.

BACKGROUND

Intensive care unit (ICU) staffing models increasingly use advanced practice providers (APPs), with unclear implications for clinical practice patterns. Sedation strategy is a modifiable determinant of clinical outcomes that might differ by staffing model.

METHODS

This retrospective cohort study evaluated adults admitted to two medical ICUs in a quaternary teaching hospital, whose staffing differed only by APPs or residents. Patients requiring invasive ventilation for at least 48 h were included. The primary outcome was association of staffing model with sedative exposure during the first week of mechanical ventilation. Time to extubation and vital status at discharge were also assessed.

RESULTS

Of 337 included patients, 96 % received continuous sedation on the day of intubation. Admission to the APP ICU was associated with significantly lower benzodiazepine exposure (adjusted OR 0.63; 95 % CI 0.40-0.99; p = 0.04) and higher propofol exposure (adjusted OR 1.73; 95 % CI 1.07-2.79; p = 0.03) on day of intubation. Cumulative benzodiazepine and opioid exposures over the first week after intubation were significantly less, and cumulative propofol exposure significantly more in the APP ICU despite similar sedation depth achieved between ICUs. Receipt of propofol on the first day was associated with shorter time to extubation (adjusted HR 1.45, 95 % CI 1.07-1.98; p = 0.02) and lower in-hospital mortality (adjusted OR 0.55, 95 % CI 0.33-0.93; p = 0.02).

CONCLUSION

Patients admitted to an APP-staffed ICU were more likely to have sedation management reflective of best practice, and this practice was associated with shorter time to extubation and lower mortality.