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Coronary artery bypass surgery without cardioplegia: hospital results in 8515 patients†

2016-03Journal article Open access
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dc.contributor.authorAntunes, PE
dc.contributor.authorFerrão de Oliveira, J
dc.contributor.authorPrieto, D
dc.contributor.authorCoutinho, GF
dc.contributor.authorCorreia, P
dc.contributor.authorBranco, CF
dc.contributor.authorAntunes, MJ
dc.date.accessioned2019-07-02T14:46:48Z
dc.date.available2019-07-02T14:46:48Z
dc.date.issued2016-03
dc.description.abstractOBJECTIVES: Cardioplegic myocardial protection is used in most cardiac surgical procedures. However, other alternatives have proved useful. We analysed the perioperative results in a large series of patients undergoing coronary artery bypass (CABG) using cardiopulmonary bypass (CPB) and non-cardioplegic methods. METHODS: From January 1992 to October 2013, 8515 consecutive patients underwent isolated CABG with CPB without cardioplegia, under hypothermic ventricular fibrillation and/or an empty beating heart. The mean age was 61.9 ± 9.5 years, 12.4% were women, 26.3% diabetic, 64% hypertensive; and 9.6% had peripheral vascular disease, 7.8% cerebrovascular disease and 54.3% previous acute myocardial infarction (AMI). One-third of patients were in Canadian Cardiovascular Society Class III/IV. Three-vessel disease was present in 76.5% of the cases and 10.9% had moderate/severe left ventricle (LV) dysfunction (ejection fraction <40%). A multivariate analysis was made of risk factors associated to in-hospital mortality and three major morbidity complications [cerebrovascular accident, mediastinitis and acute kidney injury (AKI)], as well as for prolonged hospital stay. RESULTS: The mean CPB time was 58.2 ± 20.7 min. The mean number of grafts per patient was 2.7 ± 0.8 (arterial: 1.2 ± 0.5). The left internal thoracic artery (ITA) was used in 99.4% of patients and both ITAs in 23.1%. The in-hospital mortality rate was 0.7% (61 patients), inotropic support was required in 6.6% and mechanical support in 0.8, and 2.0% were re-explored for bleeding and 1.3% for sternal complications (mediastinitis, 0.8%). AKI, the majority transient, occurred in 1595 patients (18.9%). The incidence rates of stroke/transient ischemic attack (TIA) and acute myocardial infarction (AMI) were 2.6 and 2.5%, respectively, and atrial fibrillation/flutter occurred in 22.6% of cases. Age, LV dysfunction, non-elective surgery, previous cardiac surgery, peripheral vascular disease and CPB time were independent risk factors for mortality and major morbidity. The mean hospital stay was 7.2 ± 5.7 days. CONCLUSIONS: Isolated CABG with CPB using non-cardioplegic methods proved very safe, with low mortality and morbidity. These methods are simple and expeditious and remain as very useful alternative techniques of myocardial preservation.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationEur J Cardiothorac Surg. 2016 Mar;49(3):918-25.pt_PT
dc.identifier.doi10.1093/ejcts/ezv177pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.4/2237
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.subjectBypass da Artéria Coronáriapt_PT
dc.subjectMalept_PT
dc.titleCoronary artery bypass surgery without cardioplegia: hospital results in 8515 patients†pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage925pt_PT
oaire.citation.issue3pt_PT
oaire.citation.startPage918-25pt_PT
oaire.citation.volume49pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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