[Operative risk of geriatric patients in cardiac surgery].

Background: Despite substantial progress in interventional cardiology, there are still many geriatric patients who require cardiac surgery. Estimation of the operative risk is therefore of great importance.

Objective: The prognostic value of the geriatric assessment for estimation of the operative risk was evaluated.

Material And Methods: Between 2008 and 2009 a geriatric assessment was carried out on 500 patients before an urgent or elective cardiac surgery intervention. The primary endpoints were in-hospital death, death within 30 days after the intervention and stroke. A secondary endpoint was the combination of death, stroke and in-hospital complications.

Results: The average age of the patients was 77.1 ± 4.6 years and 44.3% of the particpants were women. Aortic stenosis was the primary reason for surgery in 49.2% of patients and coronary artery disease in 38.8% of patients. Half of the patients (56.5%) showed functional impairments in one or more evaluated domains. Significant limitations in cognitive function were present in 11.8% and in mobility in 2.4% of the patients. The 30-day mortality was 2.9% and stroke occurred in 1.4% of the patients. After multivariate analysis cognitive impairment remained independently associated with the operative mortality (odds ratio OR 3.8, 95% confidence interval CI 1.2-12.7).

Conclusion: The perioperative mortality of older patients in cardiac surgery is low. A limited functional status detected in the geriatric assessment is associated with an increased mortality. Impaired cognitive function is an independent predictor of postoperative mortality.