当前位置: 首页 >> 检索结果
3881. Altered adrenergic receptor density in myocardial hibernation in humans: A possible mechanism of depressed myocardial function.
作者: K Shan.;R J Bick.;B J Poindexter.;S F Nagueh.;S Shimoni.;M S Verani.;F Keng.;M J Reardon.;G V Letsou.;J F Howell.;W A Zoghbi.
来源: Circulation. 2000年102卷21期2599-606页
Alterations in adrenergic receptor densities can potentially contribute to myocardial dysfunction. Their relevance to myocardial hibernation in humans is unknown.
3882. A randomized trial comparing stenting with balloon angioplasty in small vessels in patients with symptomatic coronary artery disease. ISAR-SMART Study Investigators. Intracoronary Stenting or Angioplasty for Restenosis Reduction in Small Arteries.
作者: A Kastrati.;A Schömig.;J Dirschinger.;J Mehilli.;F Dotzer.;N von Welser.;F J Neumann.
来源: Circulation. 2000年102卷21期2593-8页
More than 30% of the lesions currently treated with interventional approaches are situated in vessels smaller in size than those representing an established indication for stenting. The objective of this randomized trial was to assess whether compared with PTCA, stenting of small coronary vessels is associated with a reduction of restenosis.
3883. Effects of a residential exercise training on baroreflex sensitivity and heart rate variability in patients with coronary artery disease: A randomized, controlled study.
作者: F Iellamo.;J M Legramante.;M Massaro.;G Raimondi.;A Galante.
来源: Circulation. 2000年102卷21期2588-92页
Myocardial ischemia and infarction impair baroreflex sensitivity (BRS), which when depressed is predictive of future cardiac events after myocardial infarction (MI). The main objective of this study was to determine whether exercise training improves BRS in patients with coronary artery disease.
3884. Noninvasive coronary vessel wall and plaque imaging with magnetic resonance imaging.
作者: R M Botnar.;M Stuber.;K V Kissinger.;W Y Kim.;E Spuentrup.;W J Manning.
来源: Circulation. 2000年102卷21期2582-7页
Conventional x-ray angiography frequently underestimates the true burden of atherosclerosis. Although intravascular ultrasound allows for imaging of coronary plaque, this invasive technique is inappropriate for screening or serial examinations. We therefore sought to develop a noninvasive free-breathing MR technique for coronary vessel wall imaging. We hypothesized that such an approach would allow for in vivo imaging of coronary atherosclerosis.
3885. Circulating immune complexes in 50-year-old men as a strong and independent risk factor for myocardial infarction.
作者: A Mustafa.;S Nityanand.;L Berglund.;H Lithell.;A K Lefvert.
来源: Circulation. 2000年102卷21期2576-81页
Circulating immune complexes (CICs) and autoantibodies against oxidatively modified LDLs (oxLDLs) and cardiolipin occur in patients with atherosclerosis and myocardial infarction (MI). The ability of such CICs and antibodies to predict myocardial infarction (MI) was investigated in a prospective nested case-control study in which healthy 50-year-old men were followed for 20 years.
3886. Efficacy and safety of an irrigated-tip catheter for the ablation of accessory pathways resistant to conventional radiofrequency ablation.
作者: T Yamane.;P Jaïs.;D C Shah.;M Hocini.;J T Peng.;I Deisenhofer.;J Clémenty.;M Haïssaguerre.
来源: Circulation. 2000年102卷21期2565-8页
Radiofrequency catheter ablation of accessory pathways (APs) is very effective in all but a minority of patients. We examined the usefulness and safety of irrigated-tip catheters in treating patients with APs resistant to conventional catheter ablation.
3887. Late results of the Warm Heart Trial: the influence of nonfatal cardiac events on late survival.
作者: S E Fremes.;M G Tamariz.;D Abramov.;G T Christakis.;J Y Sever.;K Sykora.;B S Goldman.;C M Feindel.;S V Lichtenstein.
来源: Circulation. 2000年102卷19 Suppl 3期III339-45页
The Warm Heart Trial randomized 1732 CABG patients to receive warm or cold blood cardioplegia. In the warm cardioplegia patients, nonfatal perioperative cardiac events were significantly decreased and the mortality rate was nonsignificantly decreased (1. 4% versus 2.5%, P:=0.12). The purpose of the present study was to evaluate the late results of these trial patients.
3888. Closed relation between carotid and ascending aortic atherosclerosis in cardiac patients.
作者: I E Kallikazaros.;C P Tsioufis.;C I Stefanadis.;C E Pitsavos.;P K Toutouzas.
来源: Circulation. 2000年102卷19 Suppl 3期III263-8页
Carotid atherosclerosis and aortic atherosclerosis are both associated with coronary artery disease and cerebral thromboembolism. However, the relationship between asymptomatic carotid and aortic atherosclerosis is not well known.
3889. Treatment of iliac artery aneurysms by percutaneous implantation of stent grafts.
作者: D Scheinert.;M Schröder.;H Steinkamp.;J Ludwig.;G Biamino.
来源: Circulation. 2000年102卷19 Suppl 3期III253-8页
Iliac artery aneurysms have traditionally been treated by direct surgical reconstruction. Endovascular stent grafts have been developed to provide an effective but less invasive treatment option for patients with peripheral arterial aneurysms.
3890. Disappearance of aortic intramural hematoma and its significance to the prognosis.
作者: K Nishigami.;T Tsuchiya.;H Shono.;Y Horibata.;T Honda.
来源: Circulation. 2000年102卷19 Suppl 3期III243-7页
An aortic intramural hematoma (IMH) is a form of aortic dissection (AD). IMHs regress with time or completely disappear in some patients, whereas they progress to overt AD in other patients. The purpose of the present study was to investigate how IMHs change serially during a follow-up period.
3891. Systemic inflammatory response in cardiac allograft vasculopathy: high-sensitive C-reactive protein is associated with progressive luminal obstruction.
Response to immunologic and nonimmunologic injury has been reported to initiate the development of cardiac allograft vasculopathy (CAVD). Although histopathologic examinations reveal signs of focal inflammation, little is known about the systemic inflammatory response in this accelerated coronary syndrome.
3892. Cardiac exercise hemodynamics late after partial left ventriculectomy.
作者: K B James.;G Haas.;S R Lutton.;D Prior.;K Wolski.;T Buda.;P M McCarthy.
来源: Circulation. 2000年102卷19 Suppl 3期III200-3页
Although some patients report favorable activity levels late after partial left ventriculectomy (PLV), their exercise physiology has not been well described.
3893. Deloading of the left ventricle by ventricular assist device normalizes increased expression of endothelin ET(A) receptors but not endothelin-converting enzyme-1 in patients with end-stage heart failure.
作者: H Morawietz.;M Szibor.;W Goettsch.;B Bartling.;M Barton.;S Shaw.;R Koerfer.;H R Zerkowski.;J Holtz.
来源: Circulation. 2000年102卷19 Suppl 3期III188-93页
Ventricular assist devices (VAD) are implanted in patients with end-stage heart failure for bridging the time until heart transplantation, resulting in hemodynamic unloading of the failing heart, improved cardiac contractile and mitochondrial function, and reversal of cardiac hypertrophy. It is unknown whether VAD unloading may affect the cardiac endothelin (ET) system, which has been proposed as one of the putative pathomechanisms of heart failure.
3894. Pulsatile flow in patients with a novel nonpulsatile implantable ventricular assist device.
作者: E V Potapov.;M Loebe.;B A Nasseri.;H Sinawski.;A Koster.;H Kuppe.;G P Noon.;M E DeBakey.;R Hetzer.
来源: Circulation. 2000年102卷19 Suppl 3期III183-7页
Ventricular assist devices (VADs) are an accepted therapy for patients with end-stage heart failure. The implantable devices that are available produce a pulsatile flow and are very large. In 6 patients, beginning in November 1998, we started to use the continuous-flow implantable DeBakey VAD device, which weighs 93 g. To detect the flow in peripheral vessels, we measured transcranial Doppler signals in patients after implantation.
3895. A prospective analysis of the immunogenicity of cryopreserved nonvalved allografts used in pediatric heart surgery.
作者: J P Breinholt.;J A Hawkins.;L M Lambert.;T C Fuller.;T Profaizer.;R E Shaddy.
来源: Circulation. 2000年102卷19 Suppl 3期III179-82页
The purpose of this study was to prospectively determine the immunogenicity of nonvalved allograft tissue used to repair congenital heart defects.
3896. Congenital mitral stenosis with or without associated defects: An evolving surgical strategy.
作者: A Serraf.;J Zoghbi.;E Belli.;F Lacour-Gayet.;H Aznag.;L Houyel.;V Lambert.;D Piot.;C Planché.
来源: Circulation. 2000年102卷19 Suppl 3期III166-71页
Congenital mitral stenosis (CMS) remains a surgical challenge, particularly when it is associated with other heart defects. As in other groups of heart defects, there is a trend toward early single-stage complete repair, but the optimal surgical approach remains unanswered.
3897. Failure of stroke volume augmentation during exercise and dobutamine stress is unrelated to load-independent indexes of right ventricular performance after the Mustard operation.
作者: G P Derrick.;I Narang.;P A White.;A Kelleher.;A Bush.;D J Penny.;A N Redington.
来源: Circulation. 2000年102卷19 Suppl 3期III154-9页
Impaired right ventricular function has been implicated as a cause of reduced maximal exercise capacity after the Mustard operation for transposition of the great arteries.
3898. Effects of respiration and gravity on infradiaphragmatic venous flow in normal and Fontan patients.
作者: T Y Hsia.;S Khambadkone.;A N Redington.;F Migliavacca.;J E Deanfield.;M R de Leval.
来源: Circulation. 2000年102卷19 Suppl 3期III148-53页
In the Fontan circulation, pulmonary and systemic vascular resistances are in series. The implications of this unique arrangement on infradiaphragmatic venous physiology are poorly understood.
3899. Real-time three-dimensional echocardiographic study of left ventricular function after infarct exclusion surgery for ischemic cardiomyopathy.
作者: J X Qin.;T Shiota.;P M McCarthy.;M S Firstenberg.;N L Greenberg.;H Tsujino.;F Bauer.;A Travaglini.;K J Hoercher.;T Buda.;N G Smedira.;J D Thomas.
来源: Circulation. 2000年102卷19 Suppl 3期III101-6页
Infarct exclusion (IE) surgery, a technique of left ventricular (LV) reconstruction for dyskinetic or akinetic LV segments in patients with ischemic cardiomyopathy, requires accurate volume quantification to determine the impact of surgery due to complicated geometric changes.
3900. Humoral immune response during coronary artery bypass grafting: A comparison of limited approach, "off-pump" technique, and conventional cardiopulmonary bypass.
作者: A Diegeler.;N Doll.;T Rauch.;D Haberer.;T Walther.;V Falk.;J Gummert.;R Autschbach.;F W Mohr.
来源: Circulation. 2000年102卷19 Suppl 3期III95-100页
The introduction of limited approaches to the heart and the avoidance of cardiopulmonary bypass (CPB) aim to reduce the invasiveness of CABG by decreasing the systemic release of inflammatory cytokines, such as tumor necrosis factor (TNF)-alpha, interleukin (IL)-6, and IL-8, as well as the anti-inflammatory agent IL-10. This study compares the humoral immune response in patients undergoing CABG with standard, minimally invasive, and "off-pump" techniques.
|