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The outcomes of intra-aortic balloon pump usage in patients with acute myocardial infarction: a comprehensive meta-analysis of 33 clinical trials and 18,889 patients

Authors Fan ZG, Gao XF, Chen LW, Li XB, Shao MX, Ji Q, Zhu H, Ren YZ, Chen SL, Tian NL

Received 6 December 2015

Accepted for publication 26 January 2016

Published 16 March 2016 Volume 2016:10 Pages 297—312

DOI https://doi.org/10.2147/PPA.S101945

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Doris Leung

Peer reviewer comments 3

Editor who approved publication: Dr Naifeng Liu

Zhong-Guo Fan,1,* Xiao-Fei Gao,1,2,* Li-Wen Chen,1 Xiao-Bo Li,1,2 Ming-Xue Shao,1,2 Qian Ji,1 Hao Zhu,1 Yi-Zhi Ren,1 Shao-Liang Chen,1,2 Nai-Liang Tian1,2

1Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, 2Department of Cardiology, Nanjing Heart Center, Nanjing, People’s Republic of China

*These authors contributed equally to this work

Background: The effects of intra-aortic balloon pump (IABP) usage in patients with acute myocardial infarction remain controversial. This study sought to evaluate the outcomes of IABP usage in these patients.
Methods: Medline, EMBASE, and other internet sources were searched for relevant clinical trials. The primary efficacy endpoints (in-hospital, midterm, and long-term mortality) and secondary endpoints (reinfarction, recurrent ischemia, and new heart failure in the hospital) as well as safety endpoints (severe bleeding requiring blood transfusion and stroke in-hospital) were subsequently analyzed.
Results: Thirty-three clinical trials involving 18,889 patients were identified. The risk of long-term mortality in patients suffering from acute myocardial infarction was significantly decreased following IABP use (odds ratio [OR] 0.66, 95% confidence interval [CI]: 0.48–0.91, P=0.010). Both in-hospital and midterm mortality did not differ significantly between the IABP use group and no IABP use group (in-hospital: OR 0.87, 95% CI: 0.59–1.28, P=0.479; midterm: OR 1.12, 95% CI: 0.53–2.38, P=0.768). IABP insertion was not associated with the risk reduction of reinfarction, recurrent ischemia, or new heart failure. However, IABP use increased the risk of severe bleeding requiring blood transfusion (OR 2.05, 95% CI: 1.29–3.25, P=0.002) and stroke (OR 1.71, 95% CI: 1.04–2.82, P=0.035). In the thrombolytic therapy and cardiogenic shock subgroups, reduced mortality rates following IABP use were observed.
Conclusion: IABP insertion is associated with feasible benefits with respect to long-term survival rates in patients suffering from acute myocardial infarction, particularly those suffering from cardiogenic shock and receiving thrombolytic therapy, but at the cost of higher incidence of severe bleeding and stroke.

Keywords: intra-aortic balloon pump, acute myocardial infarction, cardiogenic shock, thrombolytic therapy, meta-analysis

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