Preoperative intraaortic balloon pump before urgent coronary bypass grafting

Abstract

Background

Urgent or emergency coronary artery bypass grafting in patients with acute coronary syndrome is associated with increased morbidity and mortality. We investigated the effects of preoperative intraaortic balloon pump support in this high-risk patient cohort.

Methods

Our institutional database was retrospectively reviewed for patients with acute coronary syndrome and an urgent or emergency indication for coronary artery bypass from April 2010 to December 2016. Data of 1066 patients were analyzed. We assessed the impact of preoperative intraaortic balloon pump therapy on postoperative mortality and major adverse cardiovascular and cerebrovascular events, and performed propensity-score matching.

Results

Intraaortic balloon pump support was implemented in 223 (20.9%) patients: 55 (5.2%) preoperatively and 168 (15.8%) intra- or postoperatively. Overall hospital mortality was 8.8%. Patients with a preoperative intraaortic balloon pump had increased mortality (11/55, 20%) compared to controls (p = 0.006). After propensity-score matching, all-cause mortality (20.0% vs. 18.2%, p = 0.834), cardiac mortality (18.2% vs. 14.5%, p = 0.651), and major adverse cardiovascular and cerebrovascular events (29.1% vs. 27.3%, p = 0.855) were comparable between groups.

Conclusions

Preoperative intraaortic balloon pump support does not confer any additional clinical benefit on patients undergoing coronary artery bypass grafting for acute coronary syndrome.

Keywords

Coronary artery bypass Intra-aortic balloon pumping Postoperative complications Hospital mortality Treatment outcome

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