title: The answer is an intra-aortic balloon pump.
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Takami
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Masumoto
mesh_terms: D015982:Bias; D018056:Hemorheology; D006801:Humans; D007387:Internal Mammary-Coronary Artery Anastomosis / Q000009:adverse effects*; D007423:Intra-Aortic Balloon Pumping / Q000379:methods*; D007430:Intraoperative Care / Q000379:methods*; D019300:Medical Errors / Q000517:prevention & control; D016343:Monitoring, Intraoperative / Q000379:methods* / Q000592:standards; D015203:Reproducibility of Results