Document Detail


Weight loss after bariatric surgery improves aortic elastic properties and left ventricular function in individuals with morbid obesity: a 3-year follow-up study.
MedLine Citation:
PMID:  17211252     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: To investigate whether weight loss after bariatric surgery (gastric bypass) is associated with changes in aortic function (an important determinant of left ventricular function) and in left ventricular function, in morbidly obese individuals 3 and 36 months after surgery. METHODS: We used echocardiography to evaluate 60 obese individuals [body mass index (BMI) > 40 kg/m2] who underwent surgery and 20 obese individuals who neither underwent surgery nor lost weight, at baseline and at 3 and 36 months of follow-up, and 40 lean individuals (BMI < 25 kg/m2) of similar age, sex and risk factors, at baseline. We measured aortic strain, distensibility, stiffness index, pressure-strain modulus and Doppler indices of left ventricular diastolic dysfunction (ratio of peak early to peak atrial flow velocities, isovolumic relaxation time and deceleration time). RESULTS: Baseline aortic function and Doppler diastolic indices were impaired in obese individuals compared with those who were lean (P < 0.05). During 3 and 36 months of follow-up, BMI and left ventricular diastolic diameter, volume, mass and wall thickness were reduced, and indices of aortic function and left ventricular diastolic function were normalized, in obese individuals after surgery [aortic distensibility (cm2 x dyn(-1) x 10(-6)): 1.9 before surgery, 3.4 at 3 months after surgery and 4.3 at 3 years after surgery, compared with 3.36 in lean controls; P < 0.01], but not in those who did not lose weight. The reduction in BMI after surgery was related to the concomitant improvement in indices of aortic function (P < 0.01) and isovolumic relaxation time (P < 0.05) after adjustment for age, sex and concomitant reduction in blood pressure, lipids and glucose concentrations. CONCLUSION: Weight reduction after bariatric surgery normalizes aortic function, reduces left ventricular hypertrophy and, thus, improves left ventricular diastolic function in morbidly obese individuals over a 3-year period of follow-up.
Authors:
Ignatios Ikonomidis; Andreas Mazarakis; Costas Papadopoulos; Nikolaos Patsouras; Fotis Kalfarentzos; John Lekakis; Dimitrios T Kremastinos; Dimitrios Alexopoulos
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of hypertension     Volume:  25     ISSN:  0263-6352     ISO Abbreviation:  J. Hypertens.     Publication Date:  2007 Feb 
Date Detail:
Created Date:  2007-01-09     Completed Date:  2007-03-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8306882     Medline TA:  J Hypertens     Country:  England    
Other Details:
Languages:  eng     Pagination:  439-47     Citation Subset:  IM    
Affiliation:
2nd Cardiology Department, Attikon Hospital, University of Athens, Athens, Greece. ignoik@otenet.gr
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MeSH Terms
Descriptor/Qualifier:
Adult
Aorta / physiology*,  ultrasonography
Aortic Diseases / physiopathology,  prevention & control
Bariatric Surgery*
Cardiovascular Diseases / prevention & control*
Echocardiography
Female
Follow-Up Studies
Humans
Hypertrophy, Left Ventricular / physiopathology,  prevention & control
Male
Middle Aged
Obesity, Morbid / physiopathology*,  surgery*
Time
Ventricular Function, Left / physiology
Weight Loss*
Comments/Corrections
Comment In:
J Hypertens. 2007 Feb;25(2):295-7   [PMID:  17211235 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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