Clinical outcomes in various coronary artery bypass grafting techniques: A systematic review and network meta-analysis.

In 30 seconds

This systematic review and frequentist network meta-analysis compared conventional, minimally invasive, and robotic coronary artery bypass grafting (CABG), including nine sub-techniques, using observational studies and randomised trials. Across 132 studies involving 779,773 patients, the three main techniques had comparable revascularization rates. Robotic CABG was associated with more favorable outcomes for ICU and hospital stay, mortality, ventilation time, wound infection, cerebrovascular accident, and renal failure than minimally invasive or conventional CABG. The authors caution that the exploratory findings, based predominantly on observational data, are hypothesis-generating rather than definitive.

Key findings

• The review included 132 studies and 779,773 patients; revascularization rates were comparable across conventional, minimally invasive, and robotic CABG.
• Robotic CABG had the most favorable reported outcomes for ICU and hospital stay, mortality, and ventilation time.
• Robotic CABG was associated with lower rates of wound infection, cerebrovascular accident, and renal failure.
• Minimally invasive CABG had the highest reoperation rate; both minimally invasive and robotic CABG had lower non-sinus rhythm rates than conventional CABG.

Why it matters

CABG approaches may differ across perioperative outcomes even when overall revascularization rates are similar. This synthesis brings together a large body of comparative evidence and highlights outcomes that may inform evaluation of surgical approaches. However, the predominance of observational evidence means apparent advantages should not be interpreted as proof that one technique causes better outcomes.

What to keep in mind

The network meta-analysis was exploratory and predominantly based on observational data, limiting confidence in comparative conclusions.