IJCS | Volume 31, Nº5, September / October 2018

469 Oliveira et al. Mortality and survival in aortic arch surgeries Int J Cardiovasc Sci. 2018;31(5)466-482 Original Article Thirty-nine patients were excluded from the initial sample (n = 350) due to missing data in the medical records and/or the medical records were not available. As above mentioned, the strategy of partial preservation of aortic arch and supra-aortic vessels cannot be performed in severe atherosclerotic disease or brachiocephalic trunk dissection. In our study, patients with preserved brachiocephalic trunk who had not undergone this technique, this decision was left to the surgeons’ discretion. The study was conducted in the following private hospitals in Rio de Janeiro - Casa de Saúde São José (30 patients), Quinta`Dor Hospital (25 patients), Copa`Dor (21 patients) and Barra`Dor (20 patients), Pró-cardíaco Hospital (5 patients), Samaritano Hospital (5 patients), Status Cor Hospital (4 patients) and Santa Maria Madalena Hospital (1 patient). For medium-term mortality and survival rates, data were collected from death certificates issued by the Rio de Janeiro State Secretary of Health from February 2000 to December 2014. Inclusion criteria All patients who underwent aortic arch repair (elective or emergent, performed by the same surgical staff) for aneurysm or acute aortic dissection from February 2000 to July 2013 were included in the study. Exclusion criteria Patients with missing data in the medical records, or whose medical records were not made available by the institutions. Data collection Data were collected using a standardized form including sociodemographic and clinical data, as well as pre-, peri-, and post-operative data (Appendix A). Pr eope r a t i ve da t a i nc l uded : c l i n i c a l and sociodemographic data – sex, age, systemic arterial hypertension (SAH), diabetes mellitus (DM), obesity, previous stroke (ischemic, hemorrhagic or unspecified), pre-operative serum creatinine, chronic renal failure, renal replacement therapy (hemodialysis or peritoneal dialysis), diagnosis of chronic obstructive pulmonary disease (obtained from the medical records), peripheral vascular disease, history of arrhythmia, history of acute myocardial infarction (AMI), unstable angina, heart failure and NYHA functional class, previous surgeries – myocardial revascularization surgery, heart valve replacement, partial aortic replacement, aortic dissection according to Stanford classification (type A or B), aortic arch aneurysm and/or aneurysm of ascending aorta. The following perioperative datawere evaluated: need for blood transfusion, combined procedure performed in aortic valve (valve repair or valve replacement), Figure 1 - Flowchart of database construction. 150 patients 39 medical records excluded for unavailability of data from the institutions involved in the study 111 patients 29 patients - Group A 82 patients - Group B