The aim of the observational study is to compare safety, clinical efficacy and time-to-event survival in patients age of 60-74 years with degenerative aortic valve disease that underwent aortic valve replacement with either stented biological prosthesis or aortic allograft.

Early safety included morbidity, mortality rate, freedom from any valve related complications Clinical efficacy included mid-term survival, freedom from reoperation, repeat endocarditis and other valve related complication Time-to-event analysis included freedom from all-cause and cardio-vascular mortality, freedom from stroke, major bleeding, endocarditis, structural valve deterioration and reoperation

Inclusion Criteria:

• Patients with degenerative aortic valve disease not emendable for aortic valve repair
• Elective surgery

Exclusion Criteria:

• Left ventricle ejection fraction less than 40%
• Redo surgery
• Indication for concomitant mitral valve replacement
• Aortic valve/root endocarditis
• Severe COPD
• Dialysis patients

Patients with degenerative aortic valve disease, age 60-74 years