Ministernotomy or minithoracotomy for minimally invasive aortic valve replacement: a Bayesian network meta-analysis

Area of Science:

• Cardiovascular Surgery
• Thoracic Surgery
• Medical Technology Assessment

Background:

• Direct comparative evidence for ministernotomy (MS) versus minithoracotomy (MT) in minimally invasive aortic valve replacement (MIAVR) is limited.
• Network meta-analysis provides a robust method to synthesize available direct and indirect evidence.

Purpose of the Study:

• To compare the relative merits of MS and MT approaches for MIAVR using network meta-analysis.
• To evaluate the safety and efficacy of MS and MT compared to conventional median sternotomy.

Main Methods:

• Systematic literature searches were conducted across six databases up to June 2014.
• Relevant studies on MIAVR were identified, and data on clinical endpoints were extracted.
• Both traditional and Bayesian meta-analysis techniques were employed for data analysis.

Main Results:

• Minithoracotomy (MT) was associated with longer cardiopulmonary bypass and cross-clamp durations compared to full sternotomy.
• Network meta-analysis revealed no significant difference in duration between MS and MT.
• Postoperative outcomes (30-day mortality, stroke, bleeding, infection) were comparable between MS and MT.

Conclusions:

• MIAVR using either MS or MT is a safe and effective alternative to conventional median sternotomy.
• While MT may involve longer bypass and cross-clamp times, postoperative outcomes are similar to MS.
• Individualized patient and surgical team factors are crucial for optimizing MIAVR outcomes.