Figure 1. Enrollment flowchart.

The mean age was 78.1 years (SD 4,1, range 70.1 – 88.1). 47.7% of patients were female. The most frequent surgery performed was isolated valve surgery (78.9%), 11% of patients underwent combined valve and coronary surgery, whereas isolated coronary artery bypass surgery (CABG) was performed in 6.4% of patients. Basal characteristiscs of the patients are shown in table 1 .

Table 1. Basal characteristics of the patients