A PubMed-indexed study published in the Caspian Journal of Internal Medicine evaluated the short-term cardiovascular effects of laparoscopic sleeve gastrectomy (LSG) using detailed echocardiographic assessment before surgery and six months postoperatively. The study included 22 patients undergoing bariatric surgery and focused on objective measures of cardiac structure and function following metabolic weight loss.

Key Echocardiographic Findings

At six months after laparoscopic sleeve gastrectomy, investigators observed significant improvement in multiple parameters of both left and right ventricular performance, including:

• Increased left ventricular ejection fraction (LVEF)

• Improved right ventricular systolic myocardial velocity

• Improved tricuspid annular plane systolic excursion (TAPSE)

• Increased E-wave velocity

• Better left ventricular global longitudinal strain (GLS)

Structural cardiac changes were also reported, including reductions in:

• Right ventricular diameter

• Left ventricular end-diastolic volume

• Left ventricular end-systolic volume

• Pulmonary artery pressure

Importantly, the proportion of patients demonstrating diastolic dysfunction decreased substantially during follow-up, suggesting early reversal of obesity-associated myocardial impairment.

Clinical Interpretation

Obesity is increasingly recognized not only as a metabolic disease but also as a condition associated with:

• Cardiac remodeling

• Diastolic dysfunction

• Pulmonary hypertension

• Right ventricular strain

• Progressive heart failure risk

This study adds objective imaging evidence suggesting that laparoscopic sleeve gastrectomy may produce measurable cardiopulmonary physiologic improvement within only a few months after surgery.

However, the findings should be interpreted cautiously because:

• The cohort size was small

• The study was observational

• No nonoperative control group was included

• Long-term durability of cardiac improvement remains uncertain

Therefore, while the data are encouraging, definitive causal conclusions cannot yet be established.

Surgical Relevance

For bariatric and metabolic laparoscopic surgeons, the study provides clinically useful counseling information when discussing the broader systemic benefits of metabolic surgery with patients who have:

• Obesity-related cardiomyopathy

• Hypertension

• Diastolic dysfunction

• Obstructive sleep apnea

• Early pulmonary hypertension

• Reduced exercise tolerance

The findings also reinforce the evolving concept that bariatric surgery should be viewed not solely as a weight-loss procedure, but as a metabolic and cardiophysiologic intervention capable of influencing multiple organ systems.

At the same time, surgeons should avoid overstating the evidence and continue emphasizing that larger prospective controlled studies are necessary before defining the precise cardiac benefits and mechanisms associated with sleeve gastrectomy.

Source: PubMed Study