Related ConditionsValves Vessels Undersized Valves Contribute To Post-TAVR Complications A Cleveland Clinic analysis finds that using an undersized aortic valve can lead to aortic regurgitation after valve replacement surgery. estaff Published: February 11, 2014 0 Print Email Facebook Twitter Treating a diseased aortic valve with transcatheter aortic valve replacement (TAVR) can add quality years to a patients life. But this relatively new procedure carries some risk and possible complications. To continue reading this article you must be a paid subscriber Subscribe Subscribe to Heart Advisor Get the next year of Heart Advisor for just $20. And access all of our online content - over 2,000 articles - free of charge. Subscribe today and save 38%. It's like getting 5 months FREE! Already Subscribed? Click Here to Sign In | Forgot your password?