3521. Safety and efficacy of surgical ventricular restoration in unstable patients with recent anterior myocardial infarction.
作者: Marisa Di Donato.;Alessandro Frigiola.;Melika Benhamouda.;Lorenzo Menicanti.
来源: Circulation. 2004年110卷11 Suppl 1期II169-73页
The effects and efficacy of surgical ventricular restoration (SVR) in ischemic cardiomiopathy caused by chronic anterior myocardial infarction (MI) are well established. Normally, SVR is delayed at least 3 months after MI to allow the healing of infarcted tissue. Some patients have instability <30 days after anterior MI, with increased risk for morbidity and mortality.Objectives- This study tests the safety and efficacy of SVR in the setting of subacute complicated anterior MI, in terms of early and late outcome.
3522. Prevention of early sudden circulatory collapse after the Norwood operation.
作者: Nilto C De Oliveira.;David A Ashburn.;Faizah Khalid.;Harold M Burkhart.;Ian T Adatia.;Helen M Holtby.;William G Williams.;Glen S Van Arsdell.
来源: Circulation. 2004年110卷11 Suppl 1期II133-8页
After modifications in our perioperative management protocol, we have observed a decrease in sudden circulatory collapse after the Norwood operation. The current study examines early outcomes after the Norwood operation in our unit in an attempt to identify variables that may have altered the risk of unexpected circulatory collapse.
3523. Long-term predictors of aortic root dilation and aortic regurgitation after arterial switch operation.
作者: Marcy L Schwartz.;Kimberlee Gauvreau.;Pedro del Nido.;John E Mayer.;Steven D Colan.
来源: Circulation. 2004年110卷11 Suppl 1期II128-32页
Neo-aortic root dilation (ARD) and neo-aortic regurgitation (AR) may be progressive after arterial switch operation (ASO) for d-loop transposition of the great arteries (dTGA). We sought to identify predictors of ARD and AR after ASO.
3524. Extending the boundaries of the primary arterial switch operation in patients with transposition of the great arteries and intact ventricular septum.
作者: Nicholas Kang.;Marc R de Leval.;Martin Elliott.;Victor Tsang.;Ergin Kocyildirim.;Igor Sehic.;John Foran.;Ian Sullivan.
来源: Circulation. 2004年110卷11 Suppl 1期II123-7页
We have previously suggested that the primary arterial switch operation is a feasible strategy for patients with transposition of the great arteries and intact ventricular septum (TGA-IVS) up to age 2 months. This study reports our current results with this approach and examines whether this policy could be extended beyond age 2 months.
3525. Mechanism of recurrent ischemic mitral regurgitation after annuloplasty: continued LV remodeling as a moving target.
作者: Judy Hung.;Lampros Papakostas.;Stephen A Tahta.;Bruce G Hardy.;Bruce A Bollen.;Carlos M Duran.;Robert A Levine.
来源: Circulation. 2004年110卷11 Suppl 1期II85-90页
Patients who undergo ring annuloplasty for ischemic mitral regurgitation (MR) often have persistent or recurrent MR. This may relate to persistent leaflet tethering from left ventricle (LV) dilatation that is not relieved by ring annuloplasty. Therefore, the purpose of this study was to test the hypothesis that recurrent MR in patients after ring annuloplasty relates to continued LV remodeling.
3527. Sensitivity and specificity of prenatal features of physiological shunts to predict neonatal clinical status in transposition of the great arteries.
作者: Jean-Marie Jouannic.;Laurent Gavard.;Laurent Fermont.;Jérôme Le Bidois.;Sophie Parat.;Pascal R Vouhé.;Yves Dumez.;Daniel Sidi.;Damien Bonnet.
来源: Circulation. 2004年110卷13期1743-6页
Although prenatal diagnosis of transposition of the great arteries (TGA) reduces neonatal mortality, the preoperative course can be complicated in infants with a restrictive foramen ovale (FO) or a ductus arteriosus (DA) constriction. We sought to determine the specificity and sensitivity of prenatal features of physiological shunts in predicting postnatal clinical status in prenatally diagnosed TGA in babies delivered in a tertiary care center providing all facilities for neonatal urgent care.
3528. Effect of pravastatin on cardiovascular events in people with chronic kidney disease.
作者: Marcello Tonelli.;Chris Isles.;Gary C Curhan.;Andrew Tonkin.;Marc A Pfeffer.;James Shepherd.;Frank M Sacks.;Curt Furberg.;Stuart M Cobbe.;John Simes.;Timothy Craven.;Malcolm West.
来源: Circulation. 2004年110卷12期1557-63页
Limited data describe the cardiovascular benefit of HMG-CoA reductase inhibitors (statins) in people with moderate chronic kidney disease (CKD). The objective of this analysis was to determine whether pravastatin reduced the incidence of cardiovascular events in people with or at high risk for coronary disease and with concomitant moderate CKD.
3529. Transplacental fetal treatment improves the outcome of prenatally diagnosed complete atrioventricular block without structural heart disease.
作者: Edgar T Jaeggi.;Jean-Claude Fouron.;Earl D Silverman.;Greg Ryan.;Jeffrey Smallhorn.;Lisa K Hornberger.
来源: Circulation. 2004年110卷12期1542-8页
Untreated isolated fetal complete atrioventricular block (CAVB) has a significant mortality rate. A standardized treatment approach, including maternal dexamethasone at CAVB diagnosis and beta-stimulation for fetal heart rates <55 bpm, has been used at our institutions since 1997. The study presents the impact of this approach.
3530. Acute cardiovascular effects of fetal surgery in the human.
作者: Jack Rychik.;Zhiyun Tian.;Meryl S Cohen.;Stanford G Ewing.;David Cohen.;Lori J Howell.;R Douglas Wilson.;Mark P Johnson.;Holly L Hedrick.;Alan W Flake.;Timothy M Crombleholme.;N Scott Adzick.
来源: Circulation. 2004年110卷12期1549-56页
Prenatal surgery for congenital anomalies can prevent fetal demise or alter the course of organ development, resulting in a more favorable condition at birth. The indications for fetal surgery continue to expand, yet little is known about the acute sequelae of fetal surgery on the human cardiovascular system.
3531. Invasive approaches to treatment of venous thromboembolism.
Deep vein thrombosis (DVT) occurs in one-quarter of a million individuals annually in the United States and results in significant disability from pulmonary embolism and chronic venous insufficiency, especially when the proximal iliofemoral is involved. Treatment has centered on early institution of adequate anticoagulation to prevent thrombus propagation and embolism, but anticoagulation alone does not always restore venous patency and many patients are left with venous outflow obstruction and valvular incompetence-the anatomic underpinnings of the postthrombotic syndrome. Various strategies have been used to restore patency of thrombosed veins, including open surgical thrombectomy, pharmacological thrombolysis, and percutaneous mechanical thrombectomy. Each modality has benefits and shortcomings. Surgical thrombectomy had previously been abandoned secondary to poor long-term results. More recently, with improved techniques and better patient selection, surgical thrombectomy has regained a therapeutic role in treating acute DVT in young patients with short segment occlusions. The advent of percutaneous techniques has allowed thrombolysis, percutaneous mechanical thrombectomy, and stenting to be used in conjunction with each other-allowing for better resolution of venous clot burden than when an individual modality is used alone. Practitioners who treat patients with DVT should be familiar with all the options available to restore venous patency, preserve valvular function, and thereby minimize the risk of late postthrombotic complications.
3532. New anticoagulants for treatment of venous thromboembolism.
Treatment of venous thromboembolism (VTE) usually starts with concomitant administration of heparin or low-molecular-weight heparin (LMWH) and a vitamin K antagonist. The parenteral anticoagulant, which is given for at least 5 days, is stopped once the vitamin K antagonist produces a therapeutic level of anticoagulation. Although the introduction of LMWH has simplified the initial treatment of VTE, problems remain. LMWH must be given by daily subcutaneous (SC) injection and vitamin K antagonists require routine coagulation monitoring, which is inconvenient for patients and physicians. Recently, 3 new anticoagulants have been introduced in an attempt to overcome these limitations. These include fondaparinux and idraparinux, synthetic analogs of the pentasaccharide sequence that mediates the interaction of heparin and LMWH with antithrombin, and ximelagatran, an orally active inhibitor of thrombin. These agents produce a predictable anticoagulant response; thus, routine coagulation monitoring is unnecessary. Because they do not bind to platelets or platelet factor 4, fondaparinux and idraparinux do not cause heparin-induced thrombocytopenia (HIT). Unlike vitamin K antagonists, ximelagatran has a rapid onset of action, thereby obviating the need for concomitant administration of a parenteral anticoagulant when starting treatment. The lack of an antidote for these new agents is a drawback, particularly for idraparinux, which has a long half-life.
3533. Long-term management of patients after venous thromboembolism.
Long-term treatment of venous thromboembolism (VTE) focuses mainly on the duration of anticoagulant therapy, usually with vitamin K (VK) antagonists. The duration of therapy should be individualized based on the risk of recurrent VTE if treatment were stopped and the risk of bleeding if treatment were continued. The risk of recurrence is low if thrombosis was provoked by a major reversible risk factor such as surgery; 3 months of treatment is usually adequate for such patients. The risk of recurrence is high if thrombosis was unprovoked ("idiopathic") or associated with an irreversible risk factor such as cancer; anticoagulant treatment for at least 6 months, and often indefinitely, is indicated for such patients. Risk of recurrence is intermediate if thrombosis was associated with a minor transient risk factor; such patients can be treated for 3 to 6 months. Within each of these categories, presentation as pulmonary embolism, >1 previous VTE, an underlying malignancy, an antiphospholipid antibody, or selected hereditary thrombophilic states favor more prolonged therapy, whereas isolated distal deep vein thrombosis, high risk of bleeding, and patient preference favor shorter treatment. The optimal intensity of anticoagulant therapy with VK antagonists corresponds to a target international normalized ratio of 2.5 (range, 2.0 to 3.0). Long-term treatment with low-molecular-weight heparin is an alternative to VK-antagonist therapy and is usually preferable in patients with active cancer. Oral direct thrombin inhibitors also appear suitable for long-term prevention of recurrent VTE but await regulatory approval and comparison with VK antagonists.
3534. Initial treatment of venous thromboembolism.
Adequate initial anticoagulant therapy of deep venous thrombosis (DVT) is required to prevent thrombus growth and pulmonary embolism (PE). Intravenous unfractionated heparin (UFH) is being replaced by low-molecular-weight heparin (LMWH) as the anticoagulant of choice for initial treatment of venous thromboembolism (VTE). Both agents are relatively safe and effective when used to treat VTE, with LMWH suitable for outpatient therapy because of improved bioavailability and more predictable anticoagulant response. Serious potential complications of heparin therapy, such as heparin-induced thrombocytopenia (HIT) and osteoporosis, seem less common with LMWH. The potential for fetal harm and changes in maternal physiology complicate the treatment of VTE during pregnancy. Although systemic thrombolysis is used in patients with massive PE and in some patients with proximal DVT, controversy persists with respect to appropriate patient selection for this intervention.
3535. ACC/AHA guidelines for the management of patients with ST-elevation myocardial infarction: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee to Revise the 1999 Guidelines for the Management of Patients with Acute Myocardial Infarction).
作者: Elliott M Antman.;Daniel T Anbe.;Paul Wayne Armstrong.;Eric R Bates.;Lee A Green.;Mary Hand.;Judith S Hochman.;Harlan M Krumholz.;Frederick G Kushner.;Gervasio A Lamas.;Charles J Mullany.;Joseph P Ornato.;David L Pearle.;Michael A Sloan.;Sidney C Smith.;Joseph S Alpert.;Jeffrey L Anderson.;David P Faxon.;Valentin Fuster.;Raymond J Gibbons.;Gabriel Gregoratos.;Jonathan L Halperin.;Loren F Hiratzka.;Sharon Ann Hunt.;Alice K Jacobs.; .; .; .
来源: Circulation. 2004年110卷9期e82-292页 3536. ACC/AHA 2004 guideline update for coronary artery bypass graft surgery: summary article: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee to Update the 1999 Guidelines for Coronary Artery Bypass Graft Surgery).
作者: Kim A Eagle.;Robert A Guyton.;Ravin Davidoff.;Fred H Edwards.;Gordon A Ewy.;Timothy J Gardner.;James C Hart.;Howard C Herrmann.;L David Hillis.;Adolph M Hutter.;Bruce Whitney Lytle.;Robert A Marlow.;William C Nugent.;Thomas A Orszulak.;Elliott M Antman.;Sidney C Smith.;Joseph S Alpert.;Jeffrey L Anderson.;David P Faxon.;Valentin Fuster.;Raymond J Gibbons.;Gabriel Gregoratos.;Jonathan L Halperin.;Loren F Hiratzka.;Sharon Ann Hunt.;Alice K Jacobs.;Joseph P Ornato.; .; .; .
来源: Circulation. 2004年110卷9期1168-76页 3537. Statins but not angiotensin-converting enzyme inhibitors delay progression of aortic stenosis.
作者: Raphael Rosenhek.;Florian Rader.;Nicole Loho.;Harald Gabriel.;Maria Heger.;Ursula Klaar.;Michael Schemper.;Thomas Binder.;Gerald Maurer.;Helmut Baumgartner.
来源: Circulation. 2004年110卷10期1291-5页
Recently, statins and angiotensin-converting enzyme inhibitors (ACEIs) have been shown to slow aortic valve calcium accumulation. Although several studies also suggest that statins may reduce the hemodynamic progression of aortic stenosis (AS), no data are available for ACEIs or the combination of both.
3540. Surgery for aneurysms of the aortic root: a 30-year experience.
作者: Kenton J Zehr.;Thomas A Orszulak.;Charles J Mullany.;Alireza Matloobi.;Richard C Daly.;Joseph A Dearani.;Thoralf M Sundt.;Francisco J Puga.;Gordon K Danielson.;Hartzell V Schaff.
来源: Circulation. 2004年110卷11期1364-71页
This study evaluated long-term results of aortic root replacement and valve-preserving aortic root reconstruction for patients with aneurysms involving the aortic root.
|