Cardiac function before and after surgery for pectus excavatum

Area of Science:

• Cardiovascular Surgery
• Thoracic Surgery
• Medical Research Methodology

Background:

• Previous meta-analysis suggested thoracic surgery for pectus excavatum improves cardiovascular function.
• That analysis was limited by heterogeneity and flawed methodologies in several included studies.

Purpose of the Study:

• To re-evaluate the impact of thoracic surgery for pectus excavatum on cardiovascular function.
• To identify reliable evidence of cardiac function improvement after surgical correction.

Main Methods:

• Conducted a comprehensive literature search from 1965 to the present.
• Included 5 studies with 118 patients and 82 controls reporting pre- and post-operative cardiac function.
• Excluded studies with cardiac/ventricular dimension limitations and indirect oxygen pulse estimates.

Main Results:

• Four of five studies found no improvement in left ventricular size, stroke volume, or cardiac output.
• Methods included radionuclide imaging, echocardiography, planimetry, and Fick method.
• One study reported a stroke volume increase, but controls also showed improvement.

Conclusions:

• There is no reliable evidence that thoracic surgery for pectus excavatum improves cardiac function.
• Existing data is insufficient to support claims of cardiovascular enhancement.
• Further rigorous studies are needed to clarify the actual impact.