Minimally invasive aortic valve replacement: late conversion to full sternotomy doubles operative time

Area of Science:

• Cardiovascular Surgery
• Minimally Invasive Procedures
• Aortic Valve Repair

Background:

• Conventional aortic valve replacement involves a full sternotomy.
• Minimally invasive approaches aim to reduce surgical trauma and improve recovery.
• The efficacy and safety of minimally invasive aortic valve replacement (MIAVR) require further investigation.

Purpose of the Study:

• To evaluate the outcomes of MIAVR compared to conventional aortic valve replacement (AVR).
• To identify potential risks and benefits associated with MIAVR and extended procedures.

Main Methods:

• A descriptive prospective study comparing 98 patients undergoing MIAVR with 50 patients undergoing conventional AVR.
• Data collected included 30-day mortality, intraoperative conversions, operative times, and aortic cross-clamp/perfusion times.

Main Results:

• Zero 30-day mortality in the MIAVR group.
• 14% of MIAVR cases required intraoperative conversion to full sternotomy, doubling operative time.
• Intended full sternotomy group had significantly shorter aortic cross-clamp and perfusion times (P < 0.001).
• Four late noncardiac deaths occurred in the completed MIAVR group.

Conclusions:

• MIAVR is an excellent option for selected patients, offering a smaller scar.
• Randomized trials are needed to confirm MIAVR's advantages over conventional AVR.
• Extended mini-sternotomies are risky and should be avoided through better preoperative patient selection.