Clinical journal of the American Society of Nephrology : CJASN · 2014
Effects of intensive low-salt diet education on albuminuria among nondiabetic patients with hypertension treated with olmesartan: a single-blinded randomized, controlled trial.
СтатьяРандомизированное исследованиеПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Hwang Jin Ho, Chin Ho Jun, Kim Sejoong, Kim Dong Ki, Kim Suhnggwon, Park Jung Hwan, Shin Sung Joon, Lee Sang Ho, Choi Bum Soon, Lim Chun Soo
Аннотация
BACKGROUND AND OBJECTIVES: The antiproteinuric effect of a renin-angiotensin-aldosterone system blockade can be magnified by dietary salt restriction. This study sought to determine the effect of intensive low-salt diet education on BP and urine albumin excretion in nondiabetic patients with hypertension and albuminuria.
DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: This study was conducted between March of 2012 and March of 2013 as an open-label, randomized, controlled trial. After a run-in period of 8 weeks, all patients received the angiotensin II receptor blocker olmesartan (40 mg daily). Patients were then divided into two groups. One group was treated for another 8 weeks with angiotensin II receptor blocker plus conventional low-salt diet education, and the other group was treated for 8 weeks with angiotensin II receptor blocker plus intensive low-salt diet education. The final analyses was performed with 245 completed patients.
RESULTS: The amount of daily albuminuria was significantly decreased from 0 (566.0 [25.0-5398.6] mg/d) to 8 weeks (282.5 [16.1-4898.5] mg/d; P<0.001). From 8 to 16 weeks, the 24-hour urinary sodium excretion was decreased by 36.0±5.9 mmol/d in the intensive education group and 8.8±4.9 mmol/d in the conventional education group (interaction P<0.001). Patients who completed intensive low-salt diet education exhibited greater decreases in urinary albumin excretion than the control group (change in albuminuria from 8 to 16 weeks, -154.0 versus 0.4 mg/d; P=0.01). Urinary albumin excretion tended to decrease as the 24-hour urinary sodium excretion amount decreased (R=0.32; 95% confidence interval, 0.20 to 0.43; P<0.001).
CONCLUSIONS: The 24-hour urinary albumin excretion was decreased more in patients in the intensive low-salt diet education group than patients in the conventional education group. Weekly intensive education on a low-salt diet would be a suitable method for clinical practice.
DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: This study was conducted between March of 2012 and March of 2013 as an open-label, randomized, controlled trial. After a run-in period of 8 weeks, all patients received the angiotensin II receptor blocker olmesartan (40 mg daily). Patients were then divided into two groups. One group was treated for another 8 weeks with angiotensin II receptor blocker plus conventional low-salt diet education, and the other group was treated for 8 weeks with angiotensin II receptor blocker plus intensive low-salt diet education. The final analyses was performed with 245 completed patients.
RESULTS: The amount of daily albuminuria was significantly decreased from 0 (566.0 [25.0-5398.6] mg/d) to 8 weeks (282.5 [16.1-4898.5] mg/d; P<0.001). From 8 to 16 weeks, the 24-hour urinary sodium excretion was decreased by 36.0±5.9 mmol/d in the intensive education group and 8.8±4.9 mmol/d in the conventional education group (interaction P<0.001). Patients who completed intensive low-salt diet education exhibited greater decreases in urinary albumin excretion than the control group (change in albuminuria from 8 to 16 weeks, -154.0 versus 0.4 mg/d; P=0.01). Urinary albumin excretion tended to decrease as the 24-hour urinary sodium excretion amount decreased (R=0.32; 95% confidence interval, 0.20 to 0.43; P<0.001).
CONCLUSIONS: The 24-hour urinary albumin excretion was decreased more in patients in the intensive low-salt diet education group than patients in the conventional education group. Weekly intensive education on a low-salt diet would be a suitable method for clinical practice.