Twenty-five-year Experience With the Medtronic-Hall Valve Prosthesis

Background-:. The Medtronic-Hall (MH) valve was developed and for the first time implanted in Oslo in 1977. A total of 1,104 patients received this valve at Rikshospitalet-Radiumhospitalet HF in the period 1977-87. In the present study we followed all 816 patients undergoing aortic valve replacement (AVR) over a 25-year period.

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Key information

Conditions

Aortic Valve Disease Cardiovascular Diseases Heart Diseases Heart Valve Diseases

Sex eligibility

All sexes

Study type

Observational

Primary location

Rikshospitalet

Oslo, 0027, Norway

About this study

The Medtronic-Hall (MH) tilting valve disk was first implanted in Oslo in June 1977. From 1977 through 1987, the valve was used as the only valve of choice and inserted in a total of 1,104 consecutive patients at our department.

The MH valve is made of a single piece of titanium with no welds. The disk is made of tungsten impregnated graphite with a carbon pyrolytic coating. The tungsten renders the disk radiopaque. In the aortic position the maximal opening is 75˚. A central aperture in the disk allows free rotation. The valve is rotatable in the sewing ring. The sewing ring is made of Teflon. Aortic sizes are 20-31 mm (outer diameter).

The initial clinical results were published in 1979 (1). The cohort of patients has been followed-up and analysed at 5, 10 and 15 years (2-5). In the present study we report our 25-year follow-up data for the 816 patients undergoing aortic valve replacement (AVR) with special reference to survival, functional status, valve-related complications and the impact of concomitant surgery.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

All patients with aortic valve replacement 1977-87

Sponsors and collaborators

Lead sponsor

Oslo University Hospital

Other

Registry information

Acronym: Hall-Kaster

Important dates

Study start: 2004
Study completion: 2005
First posted: Jun 15, 2007
Registry last updated: Jul 25, 2011

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This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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