Abstract:
:The long-term effects of valve replacement for chronic isolated aortic regurgitation as assessed by first-pass exercise radionuclide angiography have never been reported. We studied 20 males and 5 females before, 15 months postoperatively, and from 29 to 109 (mean 62 +/- 21) months following valve replacement with exercise radionuclide angiography. Mean peak heart rate did not change for the three studies. Peak systolic blood pressure decreased from 201 +/- 42 mmHg to 185 +/- 24 mmHg at 15 months and further declined to 177 +/- 32 mmHg by the long-term study (p less than 0.03). The mean resting left ventricular ejection fraction improved from 44 +/- 15% preoperatively to 57 +/- 18% at 15 months (p less than 0.002) with no further improvement by the long-term evaluation. The postexercise ejection fraction improved from 42 +/- 13% preoperatively to 61 +/- 21% at 15 months (p less than 0.002) also with no change by the long-term study. The duration of exercise improved from 9.7 +/- 4.6 min to 11.9 +/- 3.4 min (p less than 0.03) at 15 months with no additional improvement long term. Improvement in resting and postexercise ejection fraction and in exercise duration is maximal at 15 months. Accuracy and cost containment suggest that assessment of the maximal change in ejection fraction by exercise radionuclide angiography after aortic valve replacement in asymptomatic patients be limited to the 15-month interval.
journal_name
Clin Cardioljournal_title
Clinical cardiologyauthors
Lumia FJ,LaManna M,Gonzalez-Lavin L,Maranhao Vdoi
10.1002/clc.4960110403subject
Has Abstractpub_date
1988-04-01 00:00:00pages
205-8issue
4eissn
0160-9289issn
1932-8737journal_volume
11pub_type
杂志文章abstract:BACKGROUND:Stimulated endothelium-derived relaxing factor-mediated vasodilation and conduit artery distensibility are impaired in congestive heart failure (CHF). L-arginine could have a potentially beneficial role in CHF, acting through the nitric oxide (NO)-L-arginine pathway or by growth hormone increment. HYPOTHESI...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960230314
更新日期:2000-03-01 00:00:00
abstract::A 55-year-old Caucasian woman suddenly developed substernal chest pain at rest accompanied by pallor, diaphoresis, nausea, and vomiting. Physical examination was otherwise unremarkable. The resting ECG showed T-wave inversion in all anterior leads which returned to normal 24 h after the onset of the symptoms. The pain...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960100614
更新日期:1987-06-01 00:00:00
abstract::The histories, rest, and exercise ECG results of 60 patients without myocardial infarction complaining of chest pain were submitted to 6 physicians (3 cardiologists and 3 noncardiologists) who were unaware of the angiographic findings. The physicians were requested to estimate the probability of coronary artery diseas...
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
abstract:BACKGROUND:Previously, the high maternal mortality in cardiac patients who became pregnant prompted the assertion: Women with an abnormal heart should not become pregnant. This long-standing notion needs to be revised today. HYPOTHESIS:The study was undertaken to ascertain the experience with a large series of pregnan...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960260308
更新日期:2003-03-01 00:00:00
abstract:BACKGROUND:The role of warfarin in anterior ST-segment elevation myocardial infarction (STEMI) complicated by left ventricular (LV) dysfunction in patients treated with primary percutaneous coronary intervention (PCI) and dual antiplatelet therapy is unclear. Warfarin may prevent cardioembolic events but significantly ...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.22450
更新日期:2015-10-01 00:00:00
abstract::The importance of treatment in systemic hypertension and cardiovascular morbidity and mortality has been established. Although systemic hypertension is the most important factor in the pathogenesis of left ventricular hypertrophy, other factors such as catecholamines and renin-angiotensin system may be involved. Incre...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.4960150104
更新日期:1992-01-01 00:00:00
abstract::A total of 1150 consecutive patients (1052 males and 98 females; age 51.2 +/- 10.1 years) with suspected coronary artery disease (Group I) were subjected to fluoroscopy for detection of coronary artery calcification (CAC) and coronary angiography. Another group (Group II) of 120 patients (95 males and 25 females; age ...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.4960110705
更新日期:1988-07-01 00:00:00
abstract::While the prevalence of cardiovascular risk factors has decreased in the United States in recent years, cardiovascular disparities by sex and race persist. Among the factors contributing to these disparities is the physical environment in which individuals live. Neighborhood characteristics, ranging from air pollution...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.23107
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND:Hypercholesterolemia is a risk factor for coronary artery disease, yet is associated with lower risk of adverse outcomes in patients with acute coronary syndromes (ACS). HYPOTHESIS:We explored this paradox in 84,429 patients with non-ST-segment elevation ACS in the Can Rapid Risk Stratification of Unstable ...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.20518
更新日期:2009-09-01 00:00:00
abstract::A patient is presented who has mitral valve prolapse and syndactyly of the hands. This combination of findings has not been previously reported, but is consistent with one theory of the development of mitral valve prolapse. ...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960050306
更新日期:1982-03-01 00:00:00
abstract::Non-vitamin K dependent oral anticoagulants (NOAC) are now widely used in patients with nonvalvular atrial fibrillation (NVAF) for stroke prevention and in patients with venous thromboembolism (VTE) for the treatment and secondary prevention of the disease. Among NOAC, edoxaban demonstrated noninferiority to warfarin ...
journal_title:Clinical cardiology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1002/clc.23037
更新日期:2018-09-01 00:00:00
abstract:BACKGROUND/HYPOTHESIS:SMARTWOMAN™ was designed to develop and assess the feasibility of a smartphone app to control cardiovascular risk factors in vulnerable diabetic women. METHODS:Fourteen African-American women with diabetes and without known cardiovascular disease were enrolled. A weight-scale, glucometer, sphygmo...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.23124
更新日期:2019-02-01 00:00:00
abstract:BACKGROUND:Left bundle branch pacing (LBBP) has emerged as a promising pacing modality for preventing pacing induced cardiomyopathy in patients complicated with conduction abnormalities (CAs) after prosthetic valve (PV) implantation. OBJECTIVE:The present study aimed to evaluate the safety and feasibility of LBBP in t...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.23413
更新日期:2020-10-01 00:00:00
abstract:BACKGROUND:Currently, there is no clear consensus regarding the optimal waiting period before permanent pacemaker implantation in patients with conduction disorders following an inferior myocardial infarction. HYPOTHESIS:We aimed to elucidate the contemporary practice pattern of pacing, especially the timing of pacema...
journal_title:Clinical cardiology
pub_type: 杂志文章,多中心研究
doi:10.1002/clc.23210
更新日期:2019-08-01 00:00:00
abstract:BACKGROUND:Therapeutic angiogenesis, if combined with primary percutaneous transluminal coronary angioplasty or stent placement, could improve the outcome of patients suffering from multifocal coronary disease. HYPOTHESIS:Because of the concern that angiogenic growth factors might promote restenosis, we studied the ef...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960250606
更新日期:2002-06-01 00:00:00
abstract:BACKGROUND:Previously, perfusion defect in the left ventricle was detected by thallium-201 (201T1) single-photon emission computed tomography (SPECT) in aortic regurgitation (AR). The significance of 201T1 SPECT, however, has not been clarified. Limited information is available regarding the relationship between functi...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960281206
更新日期:2005-12-01 00:00:00
abstract::Spontaneous coronary artery dissection (SCAD) is a rare cause of myocardial ischemia that could present as angina, acute myocardial infarction, or even sudden death. It occurs more commonly in women and it has been associated with autoimmune and collagen vascular diseases. The management and prognosis in these patient...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.20540
更新日期:2010-07-01 00:00:00
abstract::Rocky Mountain spotted fever is a serious infectious disease that continues to occur with increasing incidence in various areas of the United States. A high case-fatality ratio (11%) persists in spite of availability of adequate chemotherapeutic agents, and the cardiac involvement may play an important role in the fin...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960061006
更新日期:1983-10-01 00:00:00
abstract::To determine whether exercise-induced ischemia impairs left ventricular diastolic filling in the postischemic period in humans, 101 men (mean age 57 +/- 10 years) were studied before and 2 h after a symptom-limited thallium-201 tomographic treadmill with pulsed Doppler echocardiography of mitral valve inflow. In the p...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960150409
更新日期:1992-04-01 00:00:00
abstract:BACKGROUND:Chronic kidney disease (CKD) is associated with high cardiovascular morbidity and mortality, which is not fully explained by traditional risk factors; hence, the interest in nontraditional risk factors such as inflammation and insulin resistance (IR). Though IR is shown in nondiabetic CKD, its association wi...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.20901
更新日期:2011-06-01 00:00:00
abstract:BACKGROUND:An experimental study showed that nebivolol is an effective agent in contrast-induced nephropathy (CIN) prophylaxis. HYPOTHESIS:We hypothesized that prophylactic nebivolol use had protective effects on renal function in human beings subjected to iodinated contrast agent since it has vasodilatory effect and ...
journal_title:Clinical cardiology
pub_type: 杂志文章,随机对照试验
doi:10.1002/clc.21013
更新日期:2012-04-01 00:00:00
abstract::Pulmonary hypertension comprises a family of disorders occurring as a primary disease or as a complication of a large number of respiratory and cardiac diseases. Pulmonary hypertension is present when pulmonary artery pressure or mean pressure exceeds 30 mmHg or 20 mmHg, respectively. Underlying the hemodynamic change...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.4960200804
更新日期:1997-08-01 00:00:00
abstract::Antithrombotic and thrombolytic therapies confer clear net benefits in the treatment of acute myocardial infarction (AMI). Antithrombotic therapy with aspirin yields conclusive reductions in vascular mortality as well as reinfarction and stroke and should be administered to all patients with suspected AMI. There is pr...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.4960201408
更新日期:1997-11-01 00:00:00
abstract:BACKGROUND:Current guidelines for the use of implantable cardioverter-defibrillators (ICDs) are broad and significantly increase the cost of caring for patients with heart failure. In an effort to identify the specific subset of patients who benefit from this therapy, the predictive value of numerous echocardiographic ...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.20474
更新日期:2009-12-01 00:00:00
abstract:BACKGROUND:Little is known about the relationship of body fluid status with the levels and fluctuations of B-type natriuretic peptide (BNP) over the long-term. HYPOTHESIS:If BNP is to become useful for monitoring of patients with chronic heart failure (HF), the levels should reliably reflect both decompensation and im...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960291008
更新日期:2006-10-01 00:00:00
abstract::In the past, many have avoided nuts because of their high fat content. The Dietary Approaches to Stop Hypertension (DASH) diet, however, recommends regular consumption of this food along with seeds and dried beans (4-5 servings per week) as part of a diet to control hypertension. Nuts are nutrient-dense and most of th...
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
abstract::Scorpion envenomation is quite common in India, southeast Asia, the U.S. southwest, and Israel (in the Negev and around Jerusalem). Yellow scorpion is considered the most dangerous scorpion that causes cardiac toxicity. Two patients are described, who lived in a nonendemic area of yellow scorpions and were envenomated...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960150514
更新日期:1992-05-01 00:00:00
abstract::We report a case of competitive blood flow in the left coronary circulation after saphenous vein bypass grafting that resulted in the apparent progression of a proximal stenosis to total occlusion at coronary angiography. Repeat angiography with careful attention to catheter position and adequate injection of contrast...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960070309
更新日期:1984-03-01 00:00:00
abstract:BACKGROUND:Acute changes in high-sensitivity troponin T (hs-TnT) are induced by myocardial ischemia during exercise stress testing, but there are no reports of pharmacological stress testing. HYPOTHESIS:The pattern of troponin release by myocardial ischemia-induced pharmacological stress testing differs according to t...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.22392
更新日期:2015-05-01 00:00:00
abstract::Peripartum cardiomyopathy (PPCM) is a rare cause of heart failure. It is defined as cardiomyopathy that develops in the last month of pregnancy or within 5 months of the postpartum period without an identifiable cause. We conducted a systematic review of literature of prospective studies with a focus on echocardiograp...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.22932
更新日期:2018-05-01 00:00:00