Pre-Frailty Score as a Predictor Risk on Cardiovascular Surgery Outcome in Elderly

This was a prospective observational study involving patients over 65 years recruited from the Dante Pazzanese Institute of Cardiology. The patients had an established diagnosis of cardiovascular diseases (myocardial infarction or valve regurgitation) by previous electrocardiogram and/or Doppler echocardiography and all had surgical indication (coronary artery bypass, valve replacement or combined surgery). Patients with prior neurological disease (previous stroke or muscular dystrophies) or cognitive impairment resulting from previous injury or who refused to participate in the study were excluded.

Twenty-four hours before the surgery patients were evaluated by Frailty score as described elsewhere and divided into 2 groups: No-Frailty (Frailty score 1 or 2) and Pre-Frailty (Frailty score 3 or 4). If the patient had Frailty score higher than 5 were excluded from the study.

After surgery all patients were admitted at the intensive care unit (ICU) following the institutional mechanical ventilation protocol. Immediately after admission heart rate, mean arterial pressure, and oxygen pulse saturation (SpO2) were measured with a Dixtal monitor (DX 2010). After ICU admission all participants were followed up for main outcomes: hospital discharge, stroke, infection or death. In addition the investigators also measured length of stay, the duration of mechanical ventilation, vasopressors usage and the needed of physiotherapy indication after hospital discharge. All study participants receive medical and physiotherapy care according to the routine of the institution.