Should less-invasive aortic valve replacement be avoided in patients with pulmonary dysfunction?

Area of Science:

• Cardiovascular Surgery
• Thoracic Surgery
• Pulmonary Medicine

Background:

• Aortic valve replacement (AVR) is a critical procedure, but its impact on patients with pulmonary dysfunction remains debated.
• The choice between less-invasive (J-incision) and traditional (full sternotomy) approaches for AVR in this population requires further investigation.

Purpose of the Study:

• To compare the outcomes of AVR using a partial upper J-incision versus a full sternotomy in patients with chronic lung disease.
• To evaluate the efficacy of the J-incision approach using forced expiratory volume in 1 second (FEV1%) as a surrogate for pulmonary function.

Main Methods:

• A retrospective analysis of 6931 patients undergoing primary isolated AVR from January 1995 to July 2010.
• Comparison of postoperative outcomes between 223 propensity-matched pairs with and without chronic lung disease, stratified by FEV1% and surgical approach (J-incision vs. full sternotomy).

Main Results:

• Patients with chronic lung disease experienced longer intensive care unit (ICU) and postoperative stays compared to those without.
• The J-incision approach demonstrated increasing benefit with lower FEV1% values, leading to shorter ICU and hospital stays.
• While early survival was possibly higher with J-incision, late survival was similar. Patients with FEV1% < 50 showed a significant survival advantage with J-incision up to 5 years.

Conclusions:

• A less-invasive J-incision for AVR is well-tolerated and offers favorable outcomes in patients with preoperative respiratory dysfunction compared to full sternotomy.
• The benefits of the J-incision, including shorter lengths of stay and improved early survival, are amplified as pulmonary function declines.
• The J-incision approach represents a potentially superior surgical strategy for AVR in patients with compromised lung function.