Association Between Change in Central Nocturnal Blood Pressure and Urine Albumin-Creatinine Ratio by a Valsartan/Amlodipine Combination: A CPET Study

American Journal of Hypertension
Takeshi FujiwaraKazuomi Kario

Abstract

We aimed to assess the association of changes in brachial or central nocturnal systolic blood pressure (SBP) with change in urine albumin-creatinine ratio (UACR) by a valsartan/amlodipine combination (80/5 mg) therapy in hypertensive patients. Twenty-three patients (age range, 47-78 years; mean, 68.0 years; 35% men, 65% with chronic kidney disease) with clinic brachial BP ≥140/90 mm Hg were treated with valsartan/amlodipine combination therapy for 16 weeks. At baseline and 16 weeks later, we measured brachial and central nocturnal SBP using an oscillometric Mobil-O-Graph device and UACR by spot urine in 23 patients. The changes in brachial nocturnal SBP (r = 0.445, P = 0.033) and those in central nocturnal SBP (r = 0.616, P = 0.002) were significantly associated with change in UACR by intervention. In multivariable-adjusted multiple regression analyses including changes in both brachial and central nocturnal SBP jointly, only central nocturnal SBP change retained a statistically significant association with change in UACR (β = 0.919, P = 0.020). Lowering central nocturnal SBP by a valsartan/amlodipine combination therapy was associated with reduction of UACR, independently of brachial nocturnal SBP reduction. Central nocturnal ...Continue Reading

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