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). CONCLUSION: The Non-SUS group showed longer LOS compared to the SUS group.
Length of hospital stay; Coronary artery bypass graft; Payer; Brazilian Unified Health System; Health plans
