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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
Hemodynamic evaluation of porcine bioprostheses in the mitral position by doppler echocardiography
The American Journal of Cardiology, Volume 59, No. 6, Year 1987
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Description
Twenty-four patients with porcine bioprostheses in the mitral position were studied by Doppler echocardiography followed by cardiac catheterization within 24 hours. Doppler mean diastolic mitral valve gradient was calculated by a 3-point method and mitral valve area was determined by the pressure half-time method. Data from Doppler echocardiography and cardiac catheterization were compared. There was a strong correlation between Doppler echocardiography and catheterization-determined mean diastolic gradient: r = 0.9, standard error of estimate (SEE) = 1.4 mm/Hg (regression equation y = 0.63x + 1.41), p <0.001. There was also a strong correlation between Doppler echocardiography and catheterization-determined mitral valve area: r = 0.86, SEE = 0.18 cm2 (regression equation y = 0.64x + 0.52), p <0.001. Fourteen patients whose valvular function was considered normal by clinical evaluation had Doppler-calculated mean diastolic gradients of 4.5 to 9.5 mm Hg (mean 6.5 ± 1.4); the Doppler-determined valve area was 1.15 to 2.0 cm2 (mean 1.54 ± 0.3). Ten patients had a malfunctioning bioprosthesis, 7 had severe mitral regurgitation and 3 had stenosis. Valvular malfunction in all 10 patients was detected by Doppler echocardiography and confirmed by catheterization and angiocardiography. Nine patients underwent reoperation. Doppler hemodynamic evaluation of porcine bioprostheses in the mitral position provided noninvasive information comparable to that obtained by cardiac catheterization. © 1987.
Authors & Co-Authors
Fawzy, Mohamed Eid
Saudi Arabia, Riyadh
King Faisal Specialist Hospital and Research Centre
Halim, Murtada
Saudi Arabia, Riyadh
King Faisal Specialist Hospital and Research Centre
Ziady, Galal Mokhtar
Saudi Arabia, Riyadh
King Faisal Specialist Hospital and Research Centre
Mercer, Edward
Saudi Arabia, Riyadh
King Faisal Specialist Hospital and Research Centre
Phillips, Robert
Saudi Arabia, Riyadh
King Faisal Specialist Hospital and Research Centre
Andaya, Wilfredo
Saudi Arabia, Riyadh
King Faisal Specialist Hospital and Research Centre
Statistics
Citations: 25
Authors: 6
Affiliations: 1
Identifiers
Doi:
10.1016/0002-9149(87)91185-4
ISSN:
00029149
Research Areas
Noncommunicable Diseases