Document Detail

Effects of isolated obesity on systolic and diastolic left ventricular function.
MedLine Citation:
PMID:  12975404     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Obesity is associated with increased cardiovascular morbidity and mortality. A direct effect of isolated obesity on cardiac function is not well established.
OBJECTIVE: To determine the direct effect of different grades of isolated obesity on echocardiographic indices of systolic and diastolic left ventricular function.
METHODS: 48 obese and 25 normal weight women were studied. They had no other pathological conditions. Obesity was classed as slight (n = 17; body mass index (BMI) 25-29.9 kg/m2), moderate (n = 20; BMI 30-34.9 kg/m2), or severe (n = 11; BMI > or = 35 kg/m2). Echocardiographic indices of systolic and diastolic function were obtained, and dysfunction was assumed when at least two values differed by > or = 2 SD from the normal weight group.
RESULTS: Ejection fraction (p < 0.05), fractional shortening (p < 0.05), and mean velocity of circumferential shortening (p < 0.05) were increased in slight and moderate obesity. Left ventricular dimensions were increased (p < 0.001) but relative wall thickness was unchanged. No obese patients met criteria for systolic dysfunction. In obese subjects, the mitral valve pressure half time (p < 0.01) and the left atrial diameter (p < 0.001) were increased and the deceleration slope was decreased (p < 0.01); all other diastolic variables were unchanged. No differences were found between obesity subgroups. Subclinical diastolic dysfunction was more prevalent among obese subjects (p = 0.002), being present in two with slight obesity (12%), seven with moderate obesity (35%), and five with severe obesity (45%). BMI correlated significantly with indices of left ventricular function.
CONCLUSIONS: Subclinical left ventricular diastolic dysfunction is present in all grades of isolated obesity, correlates with BMI, and is associated with increased systolic function in the early stages of obesity.
M Pascual; D A Pascual; F Soria; T Vicente; A M Hernández; F J Tébar; M Valdés
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Heart (British Cardiac Society)     Volume:  89     ISSN:  1468-201X     ISO Abbreviation:  Heart     Publication Date:  2003 Oct 
Date Detail:
Created Date:  2003-09-16     Completed Date:  2003-10-23     Revised Date:  2013-06-09    
Medline Journal Info:
Nlm Unique ID:  9602087     Medline TA:  Heart     Country:  England    
Other Details:
Languages:  eng     Pagination:  1152-6     Citation Subset:  AIM; IM    
Endocrinology and Nutrition Department, University Hospital Virgen de la Arrixaca, Murcia, Spain.
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MeSH Terms
Body Mass Index
Middle Aged
Obesity / physiopathology*
Stroke Volume / physiology
Ventricular Dysfunction, Left / physiopathology*
Comment In:
Heart. 2003 Oct;89(10):1127-9   [PMID:  12975393 ]

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