Background
Primary care physicians (PCPs) care for the majority of non-dialysis-dependent chronic kidney disease (CKD) patients. Studies suggest that PCPs may deliver suboptimal CKD care. One means to improve PCP treatment of CKD is clinical decision support systems (CDSS).
Study Design
Cluster randomized controlled trial
Setting & Participants
Thirty PCPs in a university-based outpatient general internal medicine practice and their 248 moderate to advanced CKD patients who had not been referred to a nephrologist.
Intervention
Two CKD educational sessions were held for PCPs in both arms. The 15 intervention arm PCPs also received real-time automated electronic medical record alerts for patients with estimated glomerular filtration rates < 45 ml/min/1.73m2 recommending renal referral and urine albumin quantification if not done within the prior year.
Outcomes
Primary outcome was referral to a nephrologist; secondary outcomes were albuminuria/proteinuria assessment, CKD documentation, optimal blood pressure (i.e., < 130/80), and use of renoprotective medications.
Results
The intervention and control arms did not differ in renal referrals (9.7% vs. 16.5%, respectively; between group difference, −6.8% (95% CI, −15.5% to 1.8%; P=0.1)) or proteinuria assessments (39.3% vs. 30.1%, respectively; between group difference, 9.2% (95% CI, −2.7% to 21.1%; P=0.1)). Among intervention and control group patients without a baseline proteinuria assessment, 27.7% versus 16.3%, respectively had one at follow-up (P=0.06). After controlling for clustering, these findings were largely unchanged and no significant differences were apparent between the groups.
Limitations
Small single-center university based practice, use of a passive CDSS that required PCPs to trigger the electronic order set.
Conclusions
PCPs were willing to partake in a randomized trial of CDSS to improve outpatient CKD care. While CDSS may possess potential, larger studies are needed to further explore how best to deploy them to enhance CKD care.