Abstract
The use of thrombus aspiration (TA) prior to primary percutaneous coronary intervention (PPCI) has undergone a radical change in intervention guidelines. The clinical implications, however, are still under scrutiny. This study investigated the clinical effects and outcome of TA before PPCI in patients with ST-segment elevation myocardial infarction (STEMI). Overall 1027 patients with STEMI were analyzed in this retrospective, propensity score-adjusted, multicenter study. The primary endpoints were in-hospital and long-term mortality. There were 418 patients in the TA group and 609 in the conventional PPCI group. The in-hospital mortality rate was significantly higher in the TA group (8.7 vs. 5.0%; P = 0.03). During long-term follow-up [median follow-up duration 689 days (IQR 405–959)] the mortality rates were similar (TA 14.3%, conventional PPCI 15.0%; P = 0.85). Survival analysis for the complete observation period revealed no significant benefit of TA [hazard ratio (HR) 1.12; 97.5% CI 0.90–0.71; P = 0.63]. There were also no significant differences between the groups in the following secondary endpoints: composite of cardiovascular death and non-fatal reinfarction at discharge (P = 0.39), post-PPCI thrombolysis in myocardial infarction flow-grade-3 (P = 0.14), left ventricular ejection fraction (P = 0.47), and non-fatal reinfarction during follow-up (P = 0.17). Rehospitalization rate (1.82 vs. 10.3%; P < 0.0001) and Canadian Cardiovascular Society (CCS) grading (P = 0.02) during follow-up were significantly lower in the TA group. In our cohort the in-hospital mortality rate was significantly higher for TA patients, but during long-term follow-up the mortality rates did not differ. The incidence of rehospitalization and CCS grading were lower in the TA-treated patients.
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Abbreviations
- ATT:
-
Average treatment effect of the treated
- AMI:
-
Acute myocardial infarction
- CABG:
-
Coronary artery bypass graft
- CCS:
-
Canadian Cardiovascular Society
- CI:
-
Confidence interval
- CK:
-
Creatine kinase
- ECG:
-
12-Lead electrocardiogram
- FMC:
-
First medical contact
- GP:
-
Glycoprotein
- HR:
-
Hazard ratio
- ICU:
-
Intensive care unit
- IPTW:
-
Inverse probability treatment weighting
- IQR:
-
Inter quartile range
- LBBB:
-
Left bundle branch block
- LVEF:
-
Left ventricular ejection fraction
- OR:
-
Odds ratio
- PPCI:
-
Primary percutaneous coronary intervention
- STEMI:
-
ST-segment elevation myocardial infarction
- TA:
-
Thrombus aspiration
- TIMI flow-grade:
-
Thrombolysis in myocardial infarction flow-grade
- Twang:
-
Toolkit for Weighting and Analysis of Nonequivalent Groups
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Acknowledgements
We thank Elizabeth Martinson, PhD, from the KHFI Editorial Office for her editorial assistance.
Author contributions
JB: data management, first draft of the manuscript; SK: data management, first draft of the manuscript; JL: treatment and follow-up of patients, data interpretation, proofreading the manuscript; AM: statistic, interpretation of data, proofreading of the manuscript; W-KK: treatment of patients, proofreading of the manuscript; JSW: follow up of patients, proofreading of the manuscript; MA: follow up of patients, data management, proofreading of the manuscript; KW: follow up of patients, data management, proofreading of the manuscript; MB: treatment and follow up of patients, proofreading of the manuscript; OD: treatment and follow up of patients, proofreading of the manuscript; CW: treatment of patients, proofreading of the manuscript; CH: treatment of patients, proofreading of the manuscript; HN: treatment of patients, proofreading of the manuscript; HM: conception of the study, treatment of patients, proofreading of the manuscript and CL: conception of the study, treatment of patients, proofreading of the manuscript.
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The datasets used and analyzed during the current study are available from the corresponding author upon reasonable request.
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The local ethics committee of the Justus Liebig University of Giessen Medical School approved this study, and the study was performed according to the principles of the Declaration of Helsinki.
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Blumenstein, J., Kriechbaum, S.D., Leick, J. et al. Outcome of thrombus aspiration in STEMI patients: a propensity score-adjusted study. J Thromb Thrombolysis 45, 240–249 (2018). https://doi.org/10.1007/s11239-017-1601-2
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DOI: https://doi.org/10.1007/s11239-017-1601-2