Effects of Bariatric Surgery on Cardiac and Vascular Structure and Function in Obesity

Study Overview
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Brief Summary
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This is a prospective cohort study which aims to explore the effect of bariatric surgery on cardiac and vascular structure and function in obesity. Enrolled patients will receive the following examinations before surgery and 3,6,12 month after the bariatric surgery: 24-h central and brachial ambulatory blood pressure monitoring, PWV, echocardiography, vascular endothelial function, hemodynamic including cardiac output and peripheral vascular resistance and so on. We compare these data before and after surgery in order to evaluate effectiveness of bariatric surgery in the cardiac and vascular structure and function.

Detailed Description
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The including citeria: 1)15-65 years old; 2) Indication for Asian bariatric surgery (I.BMI≥32.5 or 27.5≤BMI<32.5 with obesity-related comorbidities ) ;3) available for inspection and therapeutic schedule; 4) available for follow up. The excluding cteria: 1)over 65 years old; 2)myocardial infarction, angina pectoris and ischemic stroke during the previous month;3)congestive heart failure class IV based on the New York Heart Association classification; 4) malignancy or any other condition with poor prognosis; 5) serious pulmonary and renal dysfunction; 6) gastric disease; 7) poor compliance 8) incomplete clinical data .After enrollment, every patient will receive a question-based interview to obtain medical history and the following examinations and tests: anthropometric parameters measurement including body height, weight, waist circumference, hip circumference and so on; blood routine tests and biochemical tests. Every patient needs to be assessed before surgery and at 3,6,12 month by 24-h central and brachial ambulatory blood pressure, PWV, echocardiography, vascular endothelial function, cardiac output and peripheral vascular resistance. We compare these data before and after surgery in order to evaluate effectiveness of bariatric surgery in the vascular structure and function.

Official Title
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Effects of Bariatric Surgery on Cardiac and Vascular Structure and Function in Obesity

Conditions
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Bariatric Surgery

Intervention / Treatment
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* Procedure: bariatric surgery


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 15-65 years old conformed indication of Asian bariatric surgery (I.BMI≥32.5 or 27.5≤BMI<32.5 with obesity-related comorbidities ) available for inspection and therapeutic schedule available for follow up Exclusion Criteria: over 65 years old myocardial infarction, angina pectoris and ischemic stroke during the previous month congestive heart failure class IV based on the New York Heart Association classification malignancy or any other condition with poor prognosis serious pulmonary and renal dysfunction gastric disease poor compliance incomplete clinical data

Ages Eligible for Study
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Minimum Age: 15 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Procedure: bariatric surgery|Bariatric surgery for enrolled patients who fulfill the including criteria|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| left ventricular mass index | changes of left ventricular mass index representing cardiac structure measured by ultrasound will be seen from baseline at 1 year | 1 year | 
| value of E and A peak | changes of value of E and A peak representing cardiac diastolic function measured by ultrasound will be seen from baseline at 1 year | 1 year | 
| EF | changes of EF representing cardiac systolic function measured by ultrasound will be seen from baseline at 1 year | 1 year | 
| pulse wave velocity | changes of pulse wave velocity representing vascular structure measured by SphygmoCor will be seen from baseline at 1 year | 1 year | 
| flow-mediated dilatation | changes of flow-mediated dilatation representing vascular function measured by UNEX EF will be seen from baseline at 1 year | 1 year | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Cardiac and Vascular Structure and Function