Summary
Background: The electronic health record (EHR) is increasingly viewed as a means to provide more
coordinated, patient-centered care. Few studies consider the impact of EHRs on quality
of care in the intensive care unit (ICU) setting.
Objectives: To evaluate key quality measures of a surgical intensive care unit (SICU) following
implementation of the Epic EHR system in a tertiary hospital.
Methods: A retrospective chart review was undertaken to record quality indicators for all
patients admitted to the SICU two years before and two years after EHR implementation.
Data from the twelve-month period of transition to EHR was excluded. We collected
length of stay, mortality, central line associated blood stream infection (CLABSI)
rates, Clostridium difficile (C. diff.) colitis rates, readmission rates, and number of coded diagnoses. To control for
variation in the patient population over time, the case mix indexes (CMIs) and APACHE
II scores were also analyzed.
Results: There was no significant difference in length of stay, C. diff. colitis, readmission rates, or case mix index before and after EHR. After EHR implementation,
the rate of central line blood stream infection (CLABSI) per 1 000 catheter days was
85% lower (2.16 vs 0.39; RR, 0.18; 95% CI, 0.05 to 0.61, p < .005), and SICU mortality
was 28% lower (12.2 vs 8.8; RR, 1.35; 95% CI, 1.06 to 1.71, p < .01). Moreover, after
EHR there was a significant increase in the average number of coded diagnoses from
17.8 to 20.8 (p < .000).
Conclusions: EHR implementation was statistically associated with reductions in CLABSI rates and
SICU mortality. The EHR had an integral role in ongoing quality improvement endeavors
which may explain the changes in CLABSI and mortality, and this invites further study
of the impact of EHRs on quality of care in the ICU.
Keywords
Electronic health records - quality improvement - critical care - surgical intensive
care