Elective intra-aortic balloon counterpulsation during high-risk percutaneous coronary intervention: a randomized...

Area of Science:

• Cardiology
• Interventional Cardiology
• Clinical Trials

Background:

• Observational studies suggested elective intra-aortic balloon pump (IABP) insertion may improve outcomes after high-risk percutaneous coronary intervention (PCI).
• No randomized trial had previously validated this assertion.
• This study aimed to rigorously test the efficacy of routine IABP use in a specific high-risk patient group.

Purpose of the Study:

• To determine if routine intra-aortic balloon counterpulsation before PCI reduces major adverse cardiac and cardiovascular events (MACCE).
• To assess the impact of IABP on MACCE in patients with severe left ventricular dysfunction and extensive coronary disease.

Main Methods:

• A prospective, open-label, multicenter, randomized controlled trial (Balloon Pump-Assisted Coronary Intervention Study).
• 301 patients with ejection fraction ≤30% and Jeopardy Score ≥8/12 were randomized.
• Patients received either elective IABP insertion before PCI or no planned IABP.

Main Results:

• No significant difference in MACCE at hospital discharge between the elective IABP group (15.2%) and the no planned IABP group (16.0%; P=.85).
• All-cause mortality at 6 months was similar (4.6% vs 7.4%; P=.32).
• Major procedural complications were significantly lower with elective IABP (1.3% vs 10.7%; P<.001), but bleeding and access-site complications showed non-significant trends towards increase.

Conclusions:

• Elective IABP insertion did not reduce MACCE in patients undergoing high-risk PCI.
• The findings do not support routine IABP placement for all patients with severe left ventricular dysfunction and extensive coronary disease.
• While IABP reduced procedural complications, the lack of overall outcome benefit makes its routine use questionable.