P5463Hyperfiltration could be a risk factor for development of hypertension: A five-year cohort study

Abstract

Abstract Background Some recent studies showed that hyperfiltration is a risk for cardiovascular disease. However, the mechanism is still unknown. This longitudinal study tested the hypothesis that hyperfiltration could be a risk for hypertension. Methods This study retrospectively included Japanese healthy adults between 30 and 85 years of age who had medical check-up at our Center for Preventive Medicine, both at enrollment (2004) and at 5-year follow-up (2009). We excluded the subjects with hypertension, diabetes mellitus, dyslipidemia, hyperuricemia, or chronic kidney disease (estimated glomerular filtration <60 mL/min/1.73 m2) at the baseline. We divided this study subjects into three categories of eGFR (60–80 (reference), 80–100, and 100≤mL/min/1.73 m2), and defined hyperfiltration as more than 100 mL/min/1.73 m2 of eGFR. We used logistic regression analyses to examine risk factors for development of hypertension with multiple adjustments for age, sex, smoking, drinking habits, body mass index, and eGFR categories. Results In this study, 6045 subjects without comorbidities (mean age of 47±10 years, 1,842 men) were followed for 5 years. Of those, 450 subjects had developed hypertension. After multiple adjustments, hyperfiltration is a risk for development of hypertension (OR: 1.374; 95% confidence incidence (CI), 1.013–1.864), as well as aging (OR: 1.063; 95% CI, 1.052–1.073), higher BMI (OR: 1.244; 95% CI, 1.200–1.289), and drinking habits (OR: 1.387, 95% CI, 1.117–1.721). Conclusion Hyperfiltration carries a significant risk for developing hypertension in Japanese individual without comorbidities. We should take account for hyperfiltration as a risk for hypertension, as well as chronic kidney diseases.