Abstract:
BACKGROUND:Bariatric surgery is being considered as a therapeutic option for morbidly obese patients. Data are accumulating showing that this surgical intervention may improve in major cardiovascular morbidity and mortality. We evaluated the effects of bariatric surgery on left ventricular (LV) structure and function including LV mechanics in obese patients. METHODS:Thirty-seven patients (age = 36 ± 10 years; male:female = 11:26) undergoing bariatric surgery were enrolled. Echocardiography was performed before and after at least 1 year of bariatric surgery. Conventional echocardiographic parameters, including tissue Doppler measurements, were measured. LV global longitudinal, circumferential, and radial deformations were assessed utilizing 2D speckle tracking software. RESULTS:Patients decreased body mass index by 11.8 ± 4.7 over 15.6 ± 5.5 months. Bariatric surgery led to significant decreases in left ventricular (LV) size and mass (51.0 ± 3.3 to 49.1 ± 3.4 mm, p < 0.001 for LV end-diastolic dimension; 192.6 ± 33.5 to 146.2 ± 29.1 g, p < 0.001 for LV mass), and increases were noted in the ratio of early-to-late diastolic mitral inflow (E/A), early diastolic tissue Doppler velocity (Em), and LV longitudinal strain (1.42 ± 0.52 to 1.59 ± 0.56, p = 0.04 for E/A ratio; 9.7 ± 2.0 to 11.0 ± 2.4 cm/s, p < 0.001 for Em; 14.1 ± 1.9 to 16.2 ± 1.4 %, p < 0.001 for longitudinal strain). Changes of LV longitudinal strain were related to LV mass reduction (p = 0.04). However, LV ejection fraction, LV circumferential, and radial strains were all comparable at follow-up. CONCLUSION:Significant weight loss by bariatric surgery was associated with improved LV structure and function in obese patients, suggesting potential favorable effects of bariatric surgery to prevent future cardiovascular events.
journal_name
Obes Surgjournal_title
Obesity surgeryauthors
Shin SH,Lee YJ,Heo YS,Park SD,Kwon SW,Woo SI,Kim DH,Park KS,Kwan Jdoi
10.1007/s11695-016-2330-xsubject
Has Abstractpub_date
2017-03-01 00:00:00pages
620-625issue
3eissn
0960-8923issn
1708-0428pii
10.1007/s11695-016-2330-xjournal_volume
27pub_type
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