Initial clinical experience with minimally invasive surgical aortic valve replacement

Area of Science:

• Cardiovascular Surgery
• Minimally Invasive Procedures
• Aortic Valve Replacement

Background:

• Ministernotomy approach is gaining traction for aortic valve surgery.
• Its advantages over conventional sternotomy remain under discussion.
• This study compares outcomes of elective aortic valve operations via mini-sternotomy versus full sternotomy.

Purpose of the Study:

• To compare postoperative outcomes between minimally invasive aortic valve replacement (mini-AVR) and conventional full sternotomy aortic valve replacement (AVR).

Main Methods:

• 317 patients undergoing elective aortic valve replacement were analyzed.
• 63 patients had mini-AVR, 254 had full sternotomy AVR.
• Propensity score matching was used to adjust for baseline differences.

Main Results:

• Mini-AVR demonstrated significantly lower mediastinal drainage.
• Hospital mortality was lower in the full sternotomy group (3.2% vs 0%).
• No significant differences were observed in hospital stay, perioperative myocardial infarction, new pacemaker implantation, stroke, ventilation duration, mediastinitis, or paravalvular leakage. Midterm survival at 4 years was similar between groups.

Conclusions:

• While minimally invasive surgery for AVR is increasingly adopted, initial experiences suggest a need for cautious implementation.
• The study highlights specific areas where outcomes differ and others that remain comparable.