Abstract
To investigate whether visit-to-visit variability in systolic blood pressure (SBP) can predict development and progression of diabetic nephropathy and retinopathy in patients with type 2 diabetes mellitus (T2DM). From 1995 through 1996, 664 T2DM patients visited our hospital for the first time and were subsequently examined 4 times or more and at least once annually. At first visit, 326 had normoalbuminuria, 644 had an estimated glomerular filtration rate (eGFR) of ≥ 45 ml/min/1.73 m(2), 526 had no diabetic retinopathy and 609 had no severe non-proliferative diabetic retinopathy (NPDR). They were followed through June 2012, at the latest. Ninety patients developed microalbuminuria, 76 showed decrease of eGFR to <45 ml/min/1.73 m(2), 113 developed mild-moderate NPDR and 50 progression to severe NPDR. The unadjusted, age- and sex-adjusted and multivariate-adjusted hazard ratios for development and progression of nephropathy, but not retinopathy, increased across tertiles of the standard deviation (SD) of SBP. Both the SD and coefficient of variation (CV) of SBP were significant predictors of development and progression of nephropathy, but not retinopathy, independently of mean SBP. Visit-to-visit SBP variability is an independent...Continue Reading
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