Prosthetic Heart Valves, Part I: Identification and Potential Complications

Jagdish Butany, MBBS, MS, FRCPC; Gursharan S. Soor, BSc; Moyukh Chakrabarti, BSc; Iva Vukin, BSc; Shaun W. Leong, BSc


Geriatrics and Aging. 2006;9(10):691-696. 

In This Article

Mechanical Heart Valves

Single leaflet/tilting disc ( Table 2 )

This valve is often used when small-size mechanical prostheses are needed.[2]

Of the 1,766 valves replaced with this type of valve,[8] valve-related deaths occurred among less than 1% of patients. Primary risk factors for complications include diabetes, age, concurrent coronary artery bypass grafting, and hypertension.[8] The valve shows low thrombogenicity in patients on anticoagulant therapy.[2]

Figure 1 depicts this and other currently marketed prosthetic valves.

Thrombi may form on the struts, the fabric, and on the interface of valve.[10] No mechanical dysfunction has been reported. Valve-related deaths range between 4.5 and 12.1% of implants.[11,12,13] The valve's overall performance is comparable to other tilting-disc mechanical valves.[11,12,14] Note that this valve is not used in North America today, but is still used in Europe.


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