Intraoperative Characteristics and In-hospital Outcomes
Procedural characteristics (including emergent surgery and the number of distal anastomosis) were also balanced between the 2 matched groups. Complete revascularization was achieved in more than 80% of the patients. Inotropes were more widely used in LVD group (30.0% vs.13.8%, p =0.048). 77.5% of patients in the LVD group and 92.5% of patients in NLVF group were constructed three or more distal anastomoses (with a single vein graft) (p =0.037). Intraoperative characteristics and early postoperative morbidity and mortality were reported in Table 2. Patients in LVD group experienced significantly higher prevalence of left heart failure than NLVF group (22.5% vs. 5.0%, p =0.009). Despite higher postoperative major cardiovascular disease and surgical wound infection rates in the LVD group compared to the NLVF group, the difference did not reach statistical significance. There were no statistical differences in the postoperative occurrence of atrial fibrillation. There were no cases of perioperative MI, TIA or CVA in both groups. The in-hospital mortality was found to be similar before and after matching the preoperative characteristics. The lower LVEF was associated with longer ventilation, but the needs for ventilation more than 24h and/or respiratory failure were similar. The medical resource utilization (length of ICU and hospitalization stay) was similar in matched-pairs. Factors associated with short-term outcomes (all causes in-hospital death, major cardiovascular events or reoperation for bleeding) were assessed in the multivariate logistic regression model. Table 3 shows the OR estimates for predictors of short-term events in matched pairs. Importantly, age (OR=1.11, 95%CI: 1.04-1.18) but not the preoperative left ventricular ejection fraction (OR=0.99, 95%CI: 0.96-1.02) was shown to be a strong predictor of experiencing short term events.