Abstract:
:Twenty-three patients who had undergone aortic valve replacement with a mechanical aortic valve prosthesis (ball-valve: 17, tilting-disc: 6) were investigated by retrograde left ventricular catheterization using a 6 F pigtail catheter. Twelve of these 23 patients also had had combined aortic and mitral valve replacement. To assess the magnitude of the catheter-induced aortic regurgitation and its effect on left ventricular and mitral valve function, 10 patients (group 1) were simultaneously investigated by the transseptal route (8 patients) or direct left ventricular puncture. The 13 other patients (group 2) were studied only by the retrograde crossing of the aortic valve prosthesis. In group 1, placement of the catheter across the valve induced an increase in heart rate (+12%), in left ventricular end-diastolic pressure (from 17.2 +/- 9.6 to 33.3 +/- 12.0 mmHg), a decrease in aortic systolic (-19%) and diastolic (-25%) pressures, and left ventricular systolic pressure (-10%). Transvalvular aortic pressure gradient increased from 15.4 +/- 8.2 to 23 +/- 12.1 mmHg. Pre- and post-crossing pressure gradients were linearly correlated (r = 0.93). Left ventricular end-diastolic volume increased slightly but significantly (+9%), ejection fraction remained unchanged. Pre- and post-crossing regurgitation fractions were linearly related (r = 0.98). Hence, the magnitude of catheter-induced aortic regurgitation averaged 27% whether or not a pre-crossing regurgitation was noted. In group 2, retrograde crossing of the aortic valve prosthesis induced similar hemodynamic changes. There were no catheterization-related complications.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Eur Heart Jjournal_title
European heart journalauthors
Rigaud M,Dubourg O,Luwaert R,Rocha P,Hamoir V,Bardet J,Bourdarias JPdoi
10.1093/eurheartj/8.7.689subject
Has Abstractpub_date
1987-07-01 00:00:00pages
689-96issue
7eissn
0195-668Xissn
1522-9645journal_volume
8pub_type
杂志文章abstract:AIMS:To evaluate the accuracy of echocardiography in conjunction with quantitative high-dose dipyridamole technetium-99m sestamibi tomography (SPECT) in detecting coronary allograft vasculopathy. METHODS AND RESULTS:Seventy-eight consecutive heart transplant recipients underwent echocardiography while at rest and high...
journal_title:European heart journal
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更新日期:2001-06-01 00:00:00
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journal_title:European heart journal
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
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更新日期:2000-11-01 00:00:00
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更新日期:2011-10-01 00:00:00
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doi:10.1053/euhj.2001.2623
更新日期:2001-10-01 00:00:00
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更新日期:1988-01-01 00:00:00
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