Left Ventricular Structural and Functional Changes in Obese Subjects With Preserved Left Ventricular Ejection Fraction After Bariatric Surgery: Assessment With Cardiac Magnetic Resonance Imaging

• Published in: Sichuan da xue xue bao. Journal of Sichuan University. Yi xue ban Vol. 55; no. 6; p. 1410
• Main Authors: Pu, Qian, Tang, Lu, Peng, Pengfei, Ming, Yue, Yang, Huiyi, Yue, Shuting, Li, Zheng, Cheng, Zhong, Chen, Yi, Sun, Jiayu
• Format: Journal Article
• Language: Chinese
• Published: China 20.11.2024
• Subjects: Adult; Bariatric Surgery; Case-Control Studies; Female; Heart Ventricles - pathology; Heart Ventricles - physiopathology; Humans; Magnetic Resonance Imaging; Male; Middle Aged; Obesity - physiopathology; Obesity - surgery; Prospective Studies; Stroke Volume; Ventricular Function, Left - physiology; Magnetic resonance imaging; Myocardial strain; Left ventricle; Bariatric surgery
• ISSN: 1672-173X
• DOI: 10.12182/20241160503

To investigate the longitudinal changes in left ventricular (LV) structure and function after bariatric surgery in obese individuals and their relationship with preoperative left ventricular ejection fraction (LVEF) by cardiac magnetic resonance (CMR) imaging. We prospectively enrolled 75 obese subjects scheduled for laparoscopic sleeve gastrectomy and 46 age and sex-matched healthy controls (the control group). All subjects underwent CMR examination to obtain LV structural parameters, LVEF, and strain parameters. According to their preoperative LVEF, the obese subjects were divided into two obesity groups, including the group of patients with LVEF≥60% ( =43) and the group of patients with 50%≤LVEF<60% ( =32). LV structural and functional differences between the control group and the two obesity groups were compared. Eventually, 38 obese subjects completed the CMR follow-up at 1 month and 12 months after bariatric surgery. The longitudinal changes in LV structure and function after surgery in the LVEF≥60% ( =