| Title | Effects of salt substitute on pulse wave analysis among individuals at high cardiovascular risk in rural China: a randomized controlled trial |
| Authors | Hu, Jihong Jiang, Xiongjing Li, Nicole Yu, Xuequn Perkovic, Vlado Chen, Bailing Zhao, Liancheng Neal, Bruce Wu, Yangfeng |
| Affiliation | Peking Univ, Sch Publ Hlth, Dept Epidemiol & Biostat, Beijing 100083, Peoples R China. Chinese Acad Med Sci, Cardiovasc Inst, Beijing 100037, Peoples R China. Chinese Acad Med Sci, Fuwai Hosp, Beijing 100037, Peoples R China. Peking Union Med Coll, Beijing 100021, Peoples R China. George Inst Int Hlth, Sydney, NSW, Australia. George Inst China, Beijing, Peoples R China. Peking Univ, Sch Publ Hlth, Dept Epidemiol & Biostat, 38 Xueyuanlu, Beijing 100083, Peoples R China. |
| Keywords | central aortic blood pressure pulse wave analysis randomized trial salt substitute wave reflection BLOOD-PRESSURE ARTERIAL STIFFNESS ESSENTIAL-HYPERTENSION SYSTOLIC HYPERTENSION AORTIC PRESSURE LOW-SODIUM REDUCTION DISEASE REFLECTIONS POTASSIUM |
| Issue Date | 2009 |
| Publisher | hypertension research |
| Citation | HYPERTENSION RESEARCH.2009,32,(4),282-288. |
| Abstract | Reduced-sodium, increased-potassium salt substitutes lower blood pressure but may also have direct effects on vascular structure and arterial function. This study aimed to test the effects of long-term salt substitution on indices of these outcomes. The China Salt Substitute Study was a randomized, controlled trial designed to establish the effects of salt substitute (65% sodium chloride, 25% potassium chloride, 10% magnesium sulfate) compared with regular salt (100% sodium chloride) on blood pressure among 600 high-risk individuals living in six rural areas in northern China over a 12-month intervention period. Data on central aortic blood pressure, aortic pressure augmentation (AUG), augmentation index (AIx), the differences of the peak of first and baseline waves (P(1)-P(0)) and pulse wave reflection time (RT) were collected at randomization and at the completion of follow-up in 187 participants using the Sphygmocor pulse wave analysis system. Mean baseline blood pressure was 150.1/91.4 mm Hg, mean age was 58.4 years, 41% were male and three quarters had a history of vascular disease. After 12 months of intervention, there were significant net reductions in peripheral (7.4 mm Hg, P=0.009) and central (6.9 mm Hg, P=0.011) systolic blood pressure levels and central pulse pressure (4.5 mm Hg, P=0.012) and correspondingly there was a significant net reduction in P(1)-P(0) (3.0 mm Hg, P=0.007), borderline significant net reduction in AUG (1.5 mm Hg, P=0.074) and significant net increase in RT (2.59 ms, P=0.001). There were no detectable reductions in peripheral (2.8 mm Hg, P=0.14) or central (2.4 mm Hg, P=0.13) diastolic blood pressure levels or AIx (0.06%, P=0.96). In conclusion, over the 12-month study period the salt substitute significantly reduced not only peripheral and central systolic blood pressure but also reduced arterial stiffness. |
| URI | http://hdl.handle.net/20.500.11897/396602 |
| ISSN | 0916-9636 |
| DOI | 10.1038/hr.2009.7 |
| Indexed | SCI(E) |
| Appears in Collections: | 公共卫生学院 |
