Perception of indications for nephrology referral among internal medicine residents: a national online survey

Abstract

Background and objectives: Many patients with chronic kidney disease (CKD) are seen by primary care physicians who may not be aware of indications or benefits of timely nephrologist referral. Late referral to a nephrologist may lead to suboptimal pre-end stage renal disease care and greater mortality. It is not known whether current postgraduate training adequately prepares a future internist in this aspect of CKD management.

Design, setting, participants, and measurements: The authors performed an online questionnaire survey of internal medicine residents in the United States to determine their perceptions of indications for nephrology referral in CKD management.

Results: Four hundred seventy-nine residents completed the survey with postgraduate year (PGY) distribution of 166 PGY 1,187 PGY 2 and 126 PGY 3. Few residents chose nephrology referral for proteinuria (45%), uncontrolled hypertension (64%), or hyperkalemia (26%). Twenty-eight percent of the residents considered consulting a nephrologist for anemia of CKD, whereas 45% would do so for bone disorder of CKD. Most of the residents would involve a nephrologist at glomerular filtration rate (GFR) <30 ml/min/1.73 m(2) (90%) and for rapid decline in GFR (79%). Many residents would refer a patient for dialysis setup at GFR 15 to 30 ml/min/1.73 m(2) (59%); however, 18% would do so at GFR <15 ml/min/1.73 m(2). Presence of CKD clinic experience or an in-house nephrology fellowship program did not considerably change these perceptions.

Conclusions: Results show that internal medicine residents have widely differing perceptions of indications for nephrology referral. Educational efforts during residency training to raise awareness and benefits of early referral may improve CKD management by facilitating better collaboration between internist and nephrologist.

Figure 1.

Perception of indications for referral to a nephrologist among internal medicine residents according to the postgraduate year (PGY). The percent of residents choosing an indication is shown on the y-axis. Gray bars represent PGY 1, black bars represent PGY 2, and white bars represent PGY 3. Significant improvement in performance (P < 0.05) with increasing postgraduate year was observed in referral at GFR < 30 ml/min/1.73 m² and referral for dialysis setup at a GFR of 15 to 30 ml/min/1.73 m² (marked with asterisk *). RRT, renal replacement therapy.

Figure 2.

Questionnaire.