Changes in Intramyocardial Fat Assessed by Cardiac CT Before and After Bariatric Surgery and Their Relationship With Cardiac Diastolic Function

N/ANot Yet RecruitingNCT07565610

Itshak Amsalem150 enrolled

Overview

The goal of this observational study is to learn if weight loss surgery can lower fat inside the heart muscle and improve how the heart relaxes in adults with obesity. The main questions it aims to answer are: Does fat inside the heart muscle decrease after weight loss surgery? Does heart relaxation (diastolic function) improve after surgery? Are changes in heart fat linked to changes in weight, body fat, and blood markers? Participants who are already planning to have weight loss surgery will take part in this study. Participants will: Have a heart CT scan to measure fat in the heart muscle before surgery and about 6 months after surgery Have an ultrasound of the heart (echocardiogram) to check how the heart fills and relaxes Have body composition testing to measure fat and muscle Have blood tests, including routine tests and additional markers related to heart function and metabolism Researchers will compare each participant's results before and after surgery to see if heart fat decreases and if heart function and blood markers improve.

Study Type

OBSERVATIONAL

Enrollment

150

Conditions

Obesity Diastolic Dysfunction Heart Failure With Preserved Ejection Fraction (HFPEF)

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Adults aged 18 years or older * Scheduled to undergo bariatric surgery for standard clinical indications * Left ventricular ejection fraction (LVEF) ≥50% * Able to undergo cardiac computed tomography (CT) Exclusion Criteria: * Left ventricular ejection fraction (LVEF) \<50% * Known cardiomyopathies, including sarcoidosis, amyloidosis, or myocarditis * Significant valvular heart disease * Contraindication to cardiac CT (e.g., severe renal dysfunction, contrast allergy) * Presence of intracardiac or cardiac-related foreign material that may interfere with imaging (e.g., prosthetic valves, pacemakers, prior transcatheter devices)

Outcomes

Primary Outcomes

Change in intramyocardial fat content assessed by cardiac CT

Change in intramyocardial fat quantified from cardiac computed tomography (CT) between baseline (pre-surgery) and 6 months after bariatric surgery