Diabetic nephropathy and chronic kidney disease at a busy diabetes clinic: a study of outpatient care and suggestions for improved care pathways at a subspecialty specialist diabetic renal clinic

U M Graham, G M Magee, S J Hunter, A B Atkinson
Ulster Medical Journal 2010, 79 (2): 57-61
Prior to establishing a specialist diabetic renal clinic in our unit, we studied across 12 months all 1845 patients attending one of our diabetes clinics with a serum creatinine >150 μmol/l. Diabetic control was examined along with renal function and cardiovascular risk using current audit standards. 74 such patients were identified (male:female 54:20 mean HbA1c 7.8% (sd ± 1.45) and age 64.2 years (± 12.8). 30 patients had creatinine >200 μmol/l and 15 >250 μmol/l. Using the chronic kidney disease classification, 33, 28 and 6 patients were in groups III, IV and V with 7 patients undergoing renal replacement therapy. 65% of patients met JBS2 audit standards of blood pressure using a mean of 2.93 agents (sd ± 1.43). Ace-inhibitors or angiotensin receptor blockers were used in 81% and 81% were on regular antiplatelet or anticoagulant therapy. Audit standard for total cholesterol and LDL were met in 89% and 97% of patients respectively. All patients identified in our study were in CKD class III-V and therefore we considered also alternative inclusion criteria. 136 patients had a urinary ACR ≥ 30 mg/mmol. Using this and/or the serum creatinine level above identified 197 patients from the clinic. This study shows that measurement of serum creatinine alone is not sufficiently sensitive but extended criteria identified a 10% subgroup who will now be offered detailed assessments and intensified therapies at a subspecialty in-house renal clinic. eGFR has recently been added to our computerised proforma and will enable us to further refine inclusion criteria.

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