How does late nephrological co-management impact chronic kidney disease? - an observational study.

AIMS: To assess the impact of late referral (LR) for nephrological co-management compared with early referral (ER) on morbidity and mortality in chronic kidney disease (CKD) and to identify individual factors associated with higher mortality in LR, correcting for lead-time and immortal time bias. PATIENTS AND METHODS: Retrospective observational study comparing 46 LR patients with 103 ER patients. The quality of CKD management was assessed by measures to prevent CKD progression and to modify CKD complications and cardiovascular risk factors according to current guidelines. One-year mortality of LR and ER was compared and factors associated with mortality were identified. Analysis was performed with equivalent GFR (glomerular filtration rate) of ER and LR at baseline to correct for lead-time and immortal time bias. RESULTS: Late referral was associated with inferior control of most risk factors for CKD progression, CKD complications and cardiovascular risk factors. In particular, glycaemic control, the use of angiotensin converting enzyme inhibitors and angiotensin-2-receptor blockers in diabetic nephropathy or proteinuria, the control of nutritional and volume status were inferior in LR. One-year mortality was significantly higher in LR (RR 5.9 (95% CI 1.5-19.6); p < 0.01). Inadequate control of blood pressure, anaemia, volume status, malnutrition and emergency initial dialysis, but not LR itself were independently associated with mortality. CONCLUSIONS: Late referral was associated with a substantially lower survival after correction for lead-time and immortal time bias and with inferior control of most risk factors for CKD progression, complications and cardiovascular risk factors. CKD patients may particularly profit from adequate control of blood pressure, anaemia, nutritional and volume status, and avoidance of emergency initial dialysis as these factors may predominately contribute to survival.

Management of advanced chronic kidney disease in primary care - current data from Germany.

The quality of chronic kidney disease (CKD) care and the control of CKD progression factors and of comorbid conditions according to current recommendations in primary care were investigated in this retrospective cohort study of 127 consecutive CKD patients. CKD was advanced (glomerular filtration rate 21 +/- 10 ml/min). Fifty-seven per cent of patients had been evaluated to clarify CKD aetiology. Blood pressure was substantially elevated (148 +/- 20/83 +/- 11 mmHg) and only 39% of patients achieved target blood pressure levels. At a mean HbA(1c) of 6.5 +/- 1.1%, glycaemic control was good in 63% of diabetics. Mean haemoglobin was 10.8 +/- 1.8 g/dl, and anaemia was adequately controlled in 49%. In 42% the management of bone disease and in 80% the nutritional status was sufficient. Angiotensin converting enzyme inhibitors or angiotensin-2-receptor blockers was used in 59% of patients with diabetic nephropathy or proteinuria above 1 g/day. High-total quality of care was only achieved in 35% which suggests that the management of advanced CKD in primary care is suboptimal.