Notwithstanding the presence of hypertension, obstructive sleep apnea, or both, obesity is associated with increased left ventricular (LV) mass. The effects of bariatric surgery on LV mass have been sparsely investigated by M-mode and two-dimensional (2D) echocardiography. Overall, Roux-en-Y gastric bypass, adjustable gastric banding, and sleeve gastrectomy reduce LV mass. However, the reduction in LV mass is extremely variable. Besides duration and severity of obesity, presence of hypertension, obstructive sleep apnea or both, and type of surgical procedures, the inaccuracy of M-mode and 2D echocardiography for assessment of LV mass contributes to the variable effects of bariatric surgery on LV mass. Three-dimensional (3D) echocardiography may obviate the limitations of M-mode 2D echocardiography for assessment of LV mass and allow an accurate appraisal of the effects of bariatric surgery on LV mass.
Keywords: Bariatric surgery; Left ventricular mass; Left ventricular remodeling.