title: [Evaluation of the length of hospital stay in cases of coronary artery bypass graft by payer].
abstract: OBJECTIVE
  The length of hospital stay (LOS) allows for the evaluation of the efficiency of a given hospital facility, as well as providing a basis for measuring the number of hospital beds required to provide assistance to the population in a specific area.
  
  
  METHODS
  A retrospective survey was conducted on a database of 3,010 patients submitted to coronary artery bypass graft (CABG) from July, 2009 to July, 2010.
  
  
  RESULTS
  Among 2,840 patients that met the inclusion criteria, 92.1% had their surgery paid by the Brazilian Unified Health System (Sistema Único de Saúde - SUS) and 7.9% by health plans or themselves (non-SUS). 70.2% were male, the average age was 61.9 years old, and the average risk score (EuroScore) was 2.9%. The SUS and the non-SUS groups did not differ regarding the waiting time for surgery (WTS) (2.59± 3.10 vs. 3,02±3,70 days for SUS and non-SUS respectively; p=0.790), but did differ with respect to the length of stay in intensive care unit (2.17±3.84 vs. 2.52±2.72 days for SUS and non-SUS respectively; p < 0.001), the postoperative period (8.34±10.32 vs. 9,19±6.97 days for SUS and non-SUS respectively; p < 0.001), and the total LOS (10.93±11.08 vs. 12.21±8.20 days for SUS and non-SUS respectively; p < 0.001). The non-SUS group had more events of non-elective surgery (p=0.002) and surgery without cardiopulmonary bypass (p=0.012). The groups did not differ regarding the associated valve procedure (p=0.057) nor other non-valve procedures (p=0.053), but they did differ with respect to associated non-cardiac procedures (p=0.017). ICU readmission (p=0.636) and postoperative complications rates were similar in both groups (p=0.055).
  
  
  CONCLUSIONS
  The Non-SUS group showed longer LOS compared to the SUS group.
authors.affiliation: Centro de Ensino e Pesquisa do Hospital Beneficência Portuguesa de São Paulo, São Paulo, SP, Brasil. gilmara_silveira@yahoo.com.br
authors.forename: Gilmara Silveira da
authors.initials: GS
authors.lastname: Silva
authors.forename: Alexandre Gonçalves de
authors.initials: AG
authors.lastname: Sousa
authors.forename: Douglas
authors.initials: D
authors.lastname: Soares
authors.forename: Flávia Cortez
authors.initials: FC
authors.lastname: Colósimo
authors.forename: Raquel Ferrari
authors.initials: RF
authors.lastname: Piotto
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001938:Brazil; D001026:Coronary Artery Bypass / Q000009:adverse effects / Q000191:economics* / Q000592:standards; D016208:Databases, Factual / Q000706:statistics & numerical data*; D004812:Epidemiologic Methods; D005260:Female; D006742:Hospital Bed Capacity / Q000592:standards / Q000706:statistics & numerical data*; D006801:Humans; D007902:Length of Stay / Q000706:statistics & numerical data*; D008297:Male; D008875:Middle Aged; D009313:National Health Programs / Q000592:standards / Q000706:statistics & numerical data*