Abstract:
:Subaortic stenosis has been described with increasing frequency as an ominous feature of atrioventricular septal defect (AVSD), especially following surgical correction of the anomaly in non-Down's syndrome patients. In order to study the surgical anatomy of the left ventricular outflow tract in this malformation, 48 hearts featuring AVSD were examined. Obstructive lesions were classified into unequivocal forms (class A, 13.5%) and potential ones (class B, 10.8%). In the remaining hearts (class C, 75.7%) no obstruction was noted. In class A, subaortic stenosis was due to exaggeration of the anticipated anomalous arrangement of atrioventricular valve tensor apparatus, to the persistence of a subaortic muscular infundibulum, and to a discrete fibrous diaphragm. A potential for subaortic stenosis is provided by the unwedged position of the aortic valve. The left ventricular outflow tract is transformed into a long, forward-displaced fibromuscular channel. Morphometric analysis showed in AVSD (with both common annulus and separate orifices) a significantly (p less than 0.01) lower inflow/outflow tract ratio, and a significantly (p less than 0.01) lower right ventricular/left ventricular outflow length ratio than normal hearts. These results suggest that AVSD is characterized not only, as commonly stated, by inflow tract shortening, but by outflow tract lengthening as well. On these anatomical grounds, nearly all cases of AVSD could harbor the potential for subaortic stenosis; however, this becomes a real hazard (class B) only when associated with forward displacement of the left anterior papillary muscle, or direct insertion on the ventricular septum of the anterior bridging leaflet, and it may be converted to an actual obstruction by the effects of surgery.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Clin Cardioljournal_title
Clinical cardiologyauthors
Gallo P,Formigari R,Hokayem NJ,D'Offizi F,D'Alessandro,Francalanci P,d'Amati G,Colloridi V,Pizzuto Fdoi
10.1002/clc.4960140611subject
Has Abstractpub_date
1991-06-01 00:00:00pages
513-21issue
6eissn
0160-9289issn
1932-8737journal_volume
14pub_type
杂志文章,评审abstract::At present, there is an exponential use of new interventional techniques whose proper role and value have not yet been defined. The intracoronary stent is just one example. There is no doubt that stents can be implanted with a high technical success rate associated with highly predictable immediate angiographic result...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.4960160503
更新日期:1993-05-01 00:00:00
abstract::Rising costs have reached a point at which physicians must assume a major role in dealing with the cost of medicine. Little information is available regarding actual practice at the community hospital level. In order to develop some insight on this issue, a survey of cardiovascular specialists was conducted regarding ...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960140104
更新日期:1991-01-01 00:00:00
abstract:BACKGROUND:To evaluate the prognostic value of early and intensive lipid-lowering treatment on ventricular premature beat or nonsustained ventricular tachycardia (NSVT) after acute coronary syndrome (ACS) (ST-elevation myocardial infarction [STEMI], non-STEMI, and unstable angina pectoris). HYPOTHESIS:Provided that ea...
journal_title:Clinical cardiology
pub_type: 杂志文章,随机对照试验,收录出版
doi:10.1002/clc.20818
更新日期:2011-01-01 00:00:00
abstract:BACKGROUND:Aortic valve disease is an important and frequent clinical problem with a mortality rate as high as 50-80% in a 5-year natural history of patients with severe aortic valve disease. Biological or mechanical prosthesis implantation is the only way to improve prognosis. HYPOTHESIS:The aim of our study was to a...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960201010
更新日期:1997-10-01 00:00:00
abstract::The combination of cilostazol, aspirin, and clopidogrel (triple therapy) after percutaneous coronary intervention has been considered as an alternative therapy. We performed a meta-analysis based on 8 randomized controlled trials with a total of 3332 patients to compare the effectiveness and safety of this triple ther...
journal_title:Clinical cardiology
pub_type: 杂志文章,meta分析,评审
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更新日期:2012-10-01 00:00:00
abstract:BACKGROUND:Acute coronary syndromes (ACS) are characterized by activation of systemic and local inflammatory mediators. The interrelation between these soluble inflammatory markers and their association with markers of myocardial necrosis have not been extensively studied. HYPOTHESIS:The study was undertaken to evalua...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960280405
更新日期:2005-04-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.23161
更新日期:2019-03-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960160807
更新日期:1993-08-01 00:00:00
abstract::A space-occupying mass of the right atrium was found by two-dimensional echocardiography and angiography in a 68-year-old woman whose clinical diagnosis indicated multiple pulmonary emboli. Since right heart myxomas frequently cause pulmonary thromboembolism, the patient was initially diagnosed by noninvasive and inva...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960070113
更新日期:1984-01-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.23479
更新日期:2020-12-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960150908
更新日期:1992-09-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960071207
更新日期:1984-12-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960050707
更新日期:1982-07-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.4960250403
更新日期:2002-04-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960090513
更新日期:1986-05-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.23227
更新日期:2019-07-07 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.4960221504
更新日期:1999-07-01 00:00:00
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pub_type: 杂志文章
doi:10.1002/clc.20596
更新日期:2009-12-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 社论
doi:10.1002/clc.4960170405
更新日期:1994-04-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960290708
更新日期:2006-07-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.4960171408
更新日期:1994-09-01 00:00:00
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pub_type: 杂志文章,评审
doi:10.1002/clc.22476
更新日期:2016-03-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 社论
doi:10.1002/clc.20598
更新日期:2009-04-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960210608
更新日期:1998-06-01 00:00:00
abstract::The hemodynamic and myocardial energetic changes due to pulsus alternans were investigated by left and right heart catheterization and by oxygen consumption measurements in three patients with dilative cardiomyopathy. In all three patients, pulsus alternans developed after intravenous administration of the phosphodies...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960100506
更新日期:1987-05-01 00:00:00
abstract::Various anatomical and functional features of hypertrophic cardiomyopathy are analyzed in view of the data provided by two-dimensional echocardiography. Measurement of septal thickness is crucial, and is best done by a combination of M-Mode and 2-D echo. Two types of systolic anterior movement of the mitral valve (SAM...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.4960071203
更新日期:1984-12-01 00:00:00
abstract::The effects of monotherapy with atenolol or diltiazem-SR on blood pressure, 24-h blood pressure (BP) load, and exercise capacity were tested in patients with mild to moderate (stages I and II) essential hypertension. After 3-week single-blind placebo therapy, patients with sitting diastolic blood pressure (SDBP) of 94...
journal_title:Clinical cardiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1002/clc.4960171209
更新日期:1994-12-01 00:00:00
abstract::The impact of transient myocardial ischemia on left ventricular function was examined by digital subtraction left ventricular angiography. Contrast medium was injected into the right pulmonary artery before, at 60 seconds of balloon inflation, and 10 minutes after balloon deflation. A total of 69 patients completed th...
journal_title:Clinical cardiology
pub_type: 临床试验,杂志文章
doi:10.1002/clc.4960140808
更新日期:1991-08-01 00:00:00
abstract::In order to assess the diagnostic value of dipyridamole (D) testing, we studied the responses of 34 patients with chest pain and 10 normal subjects. Blood pressure and 12-lead ECG were recorded during and after intravenous infusion of 0.6 mg/kg dipyridamole for 10 minutes. Coronary arteriography and maximal or symptom...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960050402
更新日期:1982-04-01 00:00:00
abstract:BACKGROUND:Although women typically develop coronary artery disease several years after men, once they have symptomatic disease their thromboembolic complications are worse than in men. The mechanism mediating this gender difference in outcome after thromboembolic events is unknown. We previously studied platelet funct...
journal_title:Clinical cardiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1002/clc.4960191106
更新日期:1996-11-01 00:00:00