| A controlled clinical trial of the effect of gastric bypass surgery and intensive lifestyle intervention on nocturnal hypertension and the circadian blood pressure rhythm in patients with morbid obesity. | |
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MedLine Citation:
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PMID: 22261295 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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BACKGROUND: Nocturnal hypertension, increased night-to-day systolic blood pressure (BP) ratio and nondipper status (night-to-day systolic BP ratio > 0.9) are associated with an increased risk of cardiovascular disease. Our aim was to compare the 1-year effect of Roux-en-Y gastric bypass (RYGB) vs a program of intensive lifestyle intervention (ILI) only on nocturnal hypertension and circadian BP rhythm. METHODS: The study participants were part of a 1-year, controlled clinical trial comparing the effect of RYGB or ILI on obesity-related comorbidities. Ninety participants (49 in the RYGB group) successfully completed 24-hour ambulatory BP monitoring at baseline and follow-up and were eligible subsequently for analysis. RESULTS: A total of 71 subjects (79%) had nocturnal hypertension at baseline. The number of subjects with nocturnal hypertension decreased from 42 to 14 in the RYGB group (P ≤ .001) and from 29 to 27 (P = .791) in the ILI group. Subjects in the RYGB group had a lesser adjusted odds ratio (OR) of nocturnal hypertension at follow-up (OR 0.15; 95% confidence interval, 0.05-0.42; P ≤ .001); however, after further adjustment for weight loss, there was no additional beneficial effect of RYGB (P = .674). No differences between groups regarding improvement in the night-to-day systolic BP ratio were found after adjustment for 24-hour systolic pressure (P = .107). Both interventions showed a decrease in the proportion of subjects classified as nondippers, namely, 44% (P ≤ .001) and 28% (P = .002) in the RYGB and ILI groups, respectively. CONCLUSION: Only RYGB was associated with a decrease in the prevalence of nocturnal hypertension. Both interventions showed an improvement in dipper status, although RYGB was more effective. |
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Authors:
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Njord Nordstrand; Jens K Hertel; Dag Hofsø; Rune Sandbu; Erling Saltvedt; Jo Røislien; Ingrid Os; Jøran Hjelmesæth |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-17 |
Journal Detail:
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Title: Surgery Volume: - ISSN: 1532-7361 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-20 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0417347 Medline TA: Surgery Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2012 Mosby, Inc. All rights reserved. |
Affiliation:
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Morbid Obesity Center, Vestfold Hospital Trust, Tønsberg. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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