ISSN:0098-6569    

DOI:10.1002/ccd.1810100302

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

ISSN:0098-6569    

DOI:10.1002/ccd.1810100303

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

ISSN:0098-6569    

DOI:10.1002/ccd.1810100304

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

摘要:

AbstractWe investigated the morphologic structure and fluid content of atherosclerotic specimens of fresh human postmortem artery segments before and after application of a pressure of 5 atmospheres simulated by a weight of 5 kg per 1 cm2. After applying pressure in nonorganized atheromata, we noticed a marked reduction in thickness while in fibrotic atheromata we observed only smaller differences in thickness. Reduction in fluid content was significantly more pronounced in nonorganized atheromatous tissue. Reduction in thickness was closely related to reduction in weight (i e, fluid content). The time of pressure application necessary to achieve the optimal result averaged 60 sec. The conclusions drawn from these experiments were incorporated into clinical application of coronary angioplasty. Prolonged balloon inflation was applied to the last 400 out of a total of 600 coronary angioplasty procedures, performed between October 1977 and October 1983. Stenoses not sufficiently responsive to balloon inflation periods of 5–10 sec were exposed to periods of 60 sec (30–120 sec). The number of “non dilatable” stenoses was 15% with the standard short pressure procedure, but only 5% with the prolonged pressure application. No serious complications related to prolonged pressure application were observed. Thus, from experimental data and clinical experience the application of longer pressure periods appears justified and ben

ISSN:0098-6569    

DOI:10.1002/ccd.1810100305

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

摘要:

AbstractAzygos continuation of the inferior vena cava has importance for both the invasive diagnosis of congenital heart disease by catheterization and for surgical treatment. Cross‐sectional echocardiography was used to examine 1,000 patients (1 day to 16 years, mean 3.3 years) who also had angiographic or surgical confirmation. Twenty‐eight patients (3%) had azygos continuation (left 13, right 14, bilateral 1) and, in 26 patients, the hepatic portion of the inferior vena cava was absent. Azygos continuation was prospectively detected in all and was directly visualized in subcostal scans as a venous structure posterior to the aorta coursing behind the heart and not entering the inferior aspect of either atrium in 26/28 (93%). Azygos connection to the ipsilateral superior vena cava or atrium was correctly predicted in all. The inferior vena cava was visualized in all patients without azygos continuation, except one neonate with omphalocele.We conclude that cross‐sectional echocardiography can accurately detect azygos continuation of the inferior vena cava and predict its side and conne

ISSN:0098-6569    

DOI:10.1002/ccd.1810100306

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

摘要:

AbstractThree men aged 35, 55, and 60 years had asymptomatic underlying aortic‐valve stenosis unmasked by amateur running or jogging. All three men underwent aorticvalve replacement and two of the three have resumed mild exercise programs. Congenially abnormal aortic valves were found in two of the three patients. Amateur exercise may uncover an underlying cardiovascular abnormality perhaps sooner than might be apparent without exercis

ISSN:0098-6569    

DOI:10.1002/ccd.1810100307

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

摘要:

AbstractPulmonary wedge angiograms (PWA) were analyzed qualitatively and quantitatively to evaluate the pulmonary vascular bed in 40 patients with congenital heart disease. The patients were divided into four groups: group 1, normal pulmonary hemodynamics; group 2, increased pulmonary blood flow; group 3, pulmonary hypertension (PH); and group 4, PH with elevated pulmonary vascular resistance. The PWA were analyzed for tapering, pulmonary circulation time (PCT) index, and vascular image.The tapering was normal in groups 1 and 2 and was more rapid in groups 3 and 4. The PCT index was slightly lower in groups 3 and 4 than in groups 1 and 2. With 100% oxygen, the tapering became less severe and the PCT index increased in group 3. However in group 4, these parameters did not improve with 100% oxygen, suggesting that more advanced vascular changes had developed.These studies confirm the usefulness of the PWA in evaluating the pulmonary vascular bed of patients with congenital heart disease and PH.

ISSN:0098-6569    

DOI:10.1002/ccd.1810100308

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

摘要:

AbstractLeft ventricular apical aneurysms were observed in six of 84 (7.1%) patients consecutively catheterised after closed mitral valvotomy for relief of mitral stenosis. All these patients had angiographically normal coronary arteries. Such aneurysms represent a potential source of cardiovascular complications.

ISSN:0098-6569    

DOI:10.1002/ccd.1810100309

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

摘要:

AbstractBalloon inflation caused by contrast injection through the guiding catheter has been observed during several angioplasty procedures. The phenomenon is observed when employing an 8F USCI guiding catheter in combination with an ACS dilatation catheter. Two cases demonstrating the phenomenon are described in detail, together with an in vitro experiment that illustrates and quantifies the mechanism.

ISSN:0098-6569    

DOI:10.1002/ccd.1810100310

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY

ISSN:0098-6569    

DOI:10.1002/ccd.1810100311

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1984

数据来源: WILEY