|
|
||||||||
The Annals of Thoracic Surgery, Vol 22, 213-220, Copyright © 1976 by The Society of Thoracic Surgeons
U Sigwart, H Schmidt, U Gleichmann and HG Borst
In vivo evaluation of the Lillehei-Kaster heart valve prosthesis was
performed in 28 patients; 22 had undergone aortic valve replacement and 6
had had mitral valve replacement. Mean pressure gradients ranged from 6 to
53 mm Hg in aortic prostheses; valve area varied from 0.83 to 2.9 cm2. The
maximum opening angle of 80 degrees was never reached in this group of
patients; opening angles ranged from 57 to 74 degrees without evidence of
disc malfunction. There was no correlation between the ratio of effective
to geometric valve area and the degree of opening of the disc occluder.
Similar results were found in the mitral valve group. Gradients ranged from
6.0 to 12.5 mm Hg and valve area from 1.6 to 2.2 cm2. The maximum opening
angle was 59 to 63 degrees. It is concluded that incomplete opening of the
disc occluder in pivoting-disc valves is not necessarily a sign of disc
malfunction. Lillehei-Kaster valves smaller than 18 mm in internal diameter
should be avoided in adults, and outflow aortoplasty for implantation of a
larger prosthesis should be used in patients who have a narrow aortic root.
ARTICLES
In vivo evaluation of the Lillehei-Kaster heart valve prosthesis
This article has been cited by other articles:
![]() |
B. K. H. Semb and K. V. Hall The Hall-Kaster Cardiac Disc Valve Prosthesis: Experimental and Clinical Results Vascular and Endovascular Surgery, May 1, 1981; 15(3): 193 - 217. [PDF] |
||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| ANN THORAC SURG | ASIAN CARDIOVASC THORAC ANN | EUR J CARDIOTHORAC SURG |
| J THORAC CARDIOVASC SURG | ICVTS | ALL CTSNet JOURNALS |