The optimal timing of aortic valve replacement in elderly patients with severe aortic stenosis

Abstract

The elderly population with severe aortic stenosis (AS) requiring aortic valve replacement (AVR) is increasing. The optimal timing of AVR in these patients has been under discussion. We retrospectively reviewed the data from severe AS patients (n=84) who underwent AVR with/without concomitant procedures from 2005 to 2010. The symptom status, preoperative data, operative outcome, late survival and freedom from cardiac events were compared between elderly patients (age ≥80years [n=31]) and younger patients (age <80years [n=53]). The operative mortality in elderly patients (3.2%) and younger patients (3.8%) was comparable. The symptoms in elderly patients were more severe and hospitalized heart failure (HF) was more frequently noted as the primary symptom (p=0.017). Patients with and without hospitalized HF differed significantly in late survival and freedom from cardiac events (p=0.001), but advanced age had no significant effect. The results of a Cox proportional hazards analysis revealed that hospitalized HF was a significant predictor for cardiac events after AVR, irrespective of age (hazard ratio 6.93, 95% confidence interval 1.83-26.26, p<0.004). In elderly patients with severe AS, surgery should be recommended even in the presence of minimal symptoms and should be performed before the onset of life-threatening HF.