Challenges in cardiac risk assessment in bariatric surgery patients

Area of Science:

• Cardiology
• Medical Imaging
• Bariatric Surgery

Background:

• Bariatric surgery presents significant risks, classifying it as intermediate- to high-risk noncardiac surgery.
• Patients undergoing bariatric surgery often have low functional capacity, necessitating thorough cardiac risk assessment.
• Obesity poses challenges for traditional cardiac imaging techniques.

Purpose of the Study:

• To review cardiac risk assessment strategies for patients undergoing bariatric surgery.
• To evaluate the utility of stress echocardiography and myocardial perfusion imaging in obese patients.
• To discuss advanced imaging techniques for improved cardiac evaluation in this population.

Main Methods:

• Review of current literature on cardiac risk assessment in bariatric surgery patients.
• Discussion of stress echocardiography's role, including the use of contrast agents.
• Exploration of advanced myocardial perfusion imaging techniques like SPECT and PET for obese individuals.

Main Results:

• Stress echocardiography demonstrates high negative predictive value and can overcome limitations of traditional imaging in obese patients.
• Echocardiograph contrast agents enhance endocardial border identification and ventricular wall motion assessment.
• Advanced SPECT and PET imaging techniques offer potential advantages for myocardial perfusion imaging in obese patients.

Conclusions:

• Cardiac risk assessment is crucial for bariatric surgery candidates.
• Stress echocardiography is a valuable tool, especially with contrast enhancement.
• Novel myocardial perfusion imaging techniques show promise for improving cardiac evaluation in obese surgical patients.