Abstract:
BACKGROUND AND HYPOTHESIS:In patients with stable angina pectoris, eccentric stenoses have a greater potential for dynamic changes of caliber in response to vasoactive stimuli than concentric lesions. It is not known whether in patients with coronary artery spasm the degree of coronary vasoconstriction differs in eccentric versus concentric stenoses. Therefore, we examined the relationship between coronary stenosis morphology and the vasomotor response to vasoactive stimuli in patients with variant angina. METHODS:Computerized quantitative angiography was used to measure minimum luminal diameter of eccentric and concentric stenoses before and after the administration of ergonovine and isosorbide dinitrate in 22 patients with Prinzmetal's variant angina and in 20 patients with chronic stable angina. RESULTS:In patients with variant angina, mean stenosis diameter reduction with ergonovine was -0.85 +/- 0.38 and -1.12 +/- 0.69 mm in eccentric and concentric stenoses, respectively (p = NS). Isosorbide dinitrate promptly relieved spasm in all patients and increased the diameter of eccentric stenoses by 0.26 +/- 0.34 mm and that of concentric stenoses by 0.24 +/- 0.32 mm (p = NS). In patients with chronic stable angina, mean diameter reduction with ergonovine was -0.23 +/- 0.12 and -0.12 +/- 0.10 mm for eccentric and concentric stenoses, respectively (p < 0.05). Isosorbide dinitrate increased coronary diameter by 10% from baseline in 70% of eccentric and 38% of concentric stenoses (p < 0.01). CONCLUSION:In patients with variant angina pectoris, eccentric and concentric spastic stenoses react similarly in response to vasoactive stimuli. In patients with chronic stable angina, eccentric stenoses are more likely to show vasomotor responses than concentric stenoses.
journal_name
Clin Cardioljournal_title
Clinical cardiologyauthors
Tousoulis D,Davies G,Kaski JCdoi
10.1002/clc.4960210907subject
Has Abstractpub_date
1998-09-01 00:00:00pages
643-8issue
9eissn
0160-9289issn
1932-8737journal_volume
21pub_type
临床试验,杂志文章abstract:BACKGROUND:Rarely occurring in the pediatric and adolescent population, aortic dissection is a condition with many predisposing factors. Previous studies have suggested that congenital cardiovascular disorders are the most common predisposing conditions. Trauma-associated aortic dissection is considered a rare occurren...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.20383
更新日期:2009-06-01 00:00:00
abstract::201Thallium (201Tl) perfusion scintigraphy was performed in 22 patients with first acute transmural myocardial infarction within the initial 12 h after onset of symptoms. The size of the abnormally perfused area on 201Tl images was estimated by visual analysis and by a computer-assisted technique. 201Tl values for inf...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:
更新日期:1980-04-01 00:00:00
abstract:BACKGROUND:The normal and dilated heart behaves as a single functional unit during preload reduction: volume unloading in the setting of diastolic ventricular interaction allows for increased left ventricular (LV) filling. HYPOTHESIS:We hypothesized that reduction of venous return induced by a physiologic stimulus (ti...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960260909
更新日期:2003-09-01 00:00:00
abstract::A 49-year-old female with significant (75%) left main coronary artery stenosis was initially considered to have developed early obstruction of a saphenous vein graft to the left anterior descending coronary artery, because of recurrent postoperative angina. In a second catheterization study, left ventriculography show...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960100413
更新日期:1987-04-01 00:00:00
abstract::Antihypertensive drug therapy can lower blood pressure and prolong life, but many hypertensive patients continue to develop further risk factors and to die prematurely of heart disease. Antihypertensive drugs can also interfere with the patient's quality of life, and many are not compatible with the concomitant medica...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960181506
更新日期:1995-06-01 00:00:00
abstract:BACKGROUND AND HYPOTHESIS:Systemic hypertension is the leading cause of left ventricular (LV) hypertrophy. The present study aimed to investigate the mechanism of left atrial (LA) enlargement in patients with hypertensive heart disease during cardiac catheterization. METHODS:Data were obtained from eight control subje...
journal_title:Clinical cardiology
pub_type: 临床试验,杂志文章
doi:10.1002/clc.4960191211
更新日期:1996-12-01 00:00:00
abstract:BACKGROUND:Syncope is a common clinical problem with a variety of underlying mechanisms, some of which occur more frequently in 1 of the sexes or at a certain age. HYPOTHESIS:There may be clinically significant age- and gender-related differences in patients with unexplained syncope. METHODS:Five hundred seventy pati...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.22300
更新日期:2014-10-01 00:00:00
abstract::We evaluated the electrophysiological parameters before and after the intravenous infusion of diazepam (0.2 mg/kg) in 20 cardiac patients to investigate the drug's antiarrhythmic effect. Diazepam did not significantly change the arterial pressure. After the intravenous infusion of diazepam, the sinus cycle length sign...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960140507
更新日期:1991-05-01 00:00:00
abstract:BACKGROUND:The ventriculophasic response (VR) refers to shortening of atrial cycle length during heart block when a QRS complex is interposed between P waves. No formal quantitative definition has heretofore been proposed, nor have its potential clinical correlations been studied. HYPOTHESIS:We hypothesized that VR is...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.20998
更新日期:2012-01-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章,随机对照试验,收录出版
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更新日期:2011-01-01 00:00:00
abstract::Nicardipine a second-generation dihidropyridine calcium antagonist, has been approved in oral formulation for use in the United States, and is under review for parenteral use. Nicardipine is the most vascular-selective agent of this class currently approved and should, on theoretical grounds, be ideal for combination ...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.4960150403
更新日期:1992-04-01 00:00:00
abstract::We reviewed our experience with the diagnosis of cardiac myxoma in 10 patients seen between 1960 and 1981. At surgery, large myxomas (greater than 5 cm) were found in the left atrium in 6 patients, right atrium in 3, and right ventricle in 1. The correct preoperative diagnosis was made in 9 patients: clinically in 3 a...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960061008
更新日期:1983-10-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960150206
更新日期:1992-02-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章,多中心研究
doi:10.1002/clc.23097
更新日期:2019-01-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章,多中心研究
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更新日期:2019-02-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960070305
更新日期:1984-03-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1002/clc.4960270105
更新日期:2004-01-01 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 prevalence of interatrial block (IAB) is high in the elderly, particularly in those with heart disease. Despite this high prevalence-and the association of IAB with the risk of atrial fibrillation (AF), stroke, and cognitive decline-little information exists about the prognosis of older patients with IAB. P-wave d...
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pub_type: 临床试验,杂志文章,多中心研究
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更新日期:2017-04-01 00:00:00
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更新日期:2012-02-01 00:00:00
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journal_title:Clinical cardiology
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doi:10.1002/clc.22004
更新日期:2012-09-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960170610
更新日期:1994-06-01 00:00:00
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journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960200514
更新日期:1997-05-01 00:00:00
abstract::Left ventricular wall motion abnormalities, aneurysm formation, and progression to global hypokinesis have been described in patients with myocarditis and in patients with hypertrophic cardiomyopathy. We document a case of reversible aneurysm formation, cardiogenic shock, and complete recovery in a patient with myocar...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960160317
更新日期:1993-03-01 00:00:00
abstract::Primary tumors of the heart are infrequent at all ages. We present a newborn with hypoxia and a heart murmur, in whom an echocardiogram revealed a large tumor filling the right ventricle and the pulmonary annulus. To maintain pulmonary blood flow, the patency of the ductus arteriosus was achieved by infusion of prosta...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960110910
更新日期:1988-09-01 00:00:00
abstract::Cardiac troponins (CTn) are the most sensitive and specific biochemical markers of myocardial injury and risk stratification. The assay for troponin T (cTnI) is standardized, and results obtained from different institutions are comparable. This is not the case with troponin I (cTnT), and clinicians should be aware tha...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
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更新日期:2009-01-01 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::Diffuse pulmonary hemorrhage has rarely been reported as a complication of thrombolytic therapy. Recently, two patients who developed this complication were observed at our institution. This diagnosis should be considered in any post-thrombolytic patient with respiratory distress, diffuse pulmonary infiltrates, and an...
journal_title:Clinical cardiology
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更新日期:1997-03-01 00:00:00
abstract::Tissue-type plasminogen activator (t-PA) derived from a melanoma cell line was first used in patients with acute myocardial infarction in the early 1980s. Recombinant DNA technology then allowed production of large amounts of t-PA. The TIMI-I trial used a two-chain recombinant (rt-PA) product. A predominantly single-c...
journal_title:Clinical cardiology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1002/clc.4960160404
更新日期:1993-04-01 00:00:00
abstract:BACKGROUND:Considering that prehypertension is associated with an increase in cardiovascular risk, hypoadiponectinemia seems to be a predictor of hypertension. HYPOTHESIS:This study investigated whether adiponectin plasma levels are affected in Brazilian obese prehypertensives compared with those in normotensives and ...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.20657
更新日期:2010-06-01 00:00:00