Abstract:
:In order to assess the diagnostic value of dipyridamole (D) testing, we studied the responses of 34 patients with chest pain and 10 normal subjects. Blood pressure and 12-lead ECG were recorded during and after intravenous infusion of 0.6 mg/kg dipyridamole for 10 minutes. Coronary arteriography and maximal or symptom-limited exercise tests were performed in the 34 patients with chest pain. During infusion 13 patients presented ischemic ST changes and 5 with anginal pain only. The latter group had normal coronary arteries. Among the 13 patients with ischemic ST changes, 7 had at least two critical coronary stenoses and the remaining 6 had no coronary lesions. Dipyridamole tests showed poor sensitivity (44%) and specificity (39%) with respect to coronary arteriography. The relatively high number of positive responses in subjects with normal coronary arteries indicates that the coronary steal phenomenon is not the sole cause of "ischemic" response to the drug. Indirect indexes of myocardial oxygen consumption were higher in patients with a positive response to drug infusion than in those with a negative response; however the value of rate-pressure product at infusion end never reached that observed at ischemic threshold during exercise testing in the same patient. This suggests that neither can oxygen consumption increase be considered as entirely responsible for ischemic response to dipyridamole. In conclusion dipyridamole test cannot be proposed for predicting critical coronary stenoses.
journal_name
Clin Cardioljournal_title
Clinical cardiologyauthors
DeAmbroggi L,Barbieri P,DeBiase AM,Repetto S,Radice Mdoi
10.1002/clc.4960050402subject
Has Abstractpub_date
1982-04-01 00:00:00pages
269-74issue
4eissn
0160-9289issn
1932-8737journal_volume
5pub_type
杂志文章abstract::Preoperative assessment of cardiac risk using thallium-201 scintigraphy and atrial pacing (n = 42) or dipyridamole stress testing (n = 35) was performed in 77 patients (mean age 65 +/- 7 years), who subsequently underwent elective nonvascular surgery. All patients were at low cardiac risk by clinical criteria; none co...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960130905
更新日期:1990-09-01 00:00:00
abstract::Until recently, instrumenting the pericardium was possible only when a pericardial effusion is present or by surgical exposure of the pericardium. Techniques are now being developed to instrument the normal pericardium. This development will allow clinicians and investigators to study pericardial fluid in health and i...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960221304
更新日期:1999-01-01 00:00:00
abstract::The impact of transient myocardial ischemia on left ventricular function was examined by digital subtraction left ventricular angiography. Contrast medium was injected into the right pulmonary artery before, at 60 seconds of balloon inflation, and 10 minutes after balloon deflation. A total of 69 patients completed th...
journal_title:Clinical cardiology
pub_type: 临床试验,杂志文章
doi:10.1002/clc.4960140808
更新日期:1991-08-01 00:00:00
abstract:BACKGROUND:The Reduction in ENdpoints with the Angiotensin Antagonist Losartan (RENAAL) study reported that losartan delayed the progression of renal disease in patients with type 2 diabetes and nephropathy. Diabetic or renally impaired patients are at high cardiovascular risk, a risk potentially increased in patients ...
journal_title:Clinical cardiology
pub_type: 临床试验,杂志文章
doi:10.1002/clc.4960280307
更新日期:2005-03-01 00:00:00
abstract:BACKGROUND:Investigate the usefulness of echocardiography and acoustic cardiography to monitor patients exposed to anthracycline chemotherapy. HYPOTHESIS:Serial echocardiographies to monitor systolic function may not be neccessary in all patients undergoing anthracycline chemotherapy. METHODS:In a prospective study, ...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.22074
更新日期:2013-04-01 00:00:00
abstract:BACKGROUND:Identifying vulnerable plaque is important for preventing an acute coronary event. The present study examined the relationship between the clinical presentation of coronary artery disease and the plaque characteristics of nonculprit segment assessed by virtual histology intravascular ultrasound (VH-IVUS). M...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.20471
更新日期:2009-08-01 00:00:00
abstract::The coronary artery thrombus that causes acute myocardial infarction can be lysed, and reperfusion can be achieved, in the first few hours after infarction. However, the infarct vessel will reocclude in 15-30% of patients, and this event is frequently associated with pain, reinfarction, arrhythmias, or death. The risk...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960080902
更新日期:1985-09-01 00:00:00
abstract::Heart transplantation is the only curative therapy for chronic heart failure, and it plays an important role in the treatment of chronic heart failure with a survival rate of approximately 50% of all patients after 10 years. This has to be kept in mind when alternative therapies enter into our daily routine in treatin...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.22124
更新日期:2013-07-01 00:00:00
abstract::The renin-angiotensin system regulates blood pressure and sodium homeostasis through a series of coordinated substrate-enzyme interactions. These interactions result in the production of angiotensin II (AII), which exerts a number of diverse biologic effects mediated through AII cell-surface receptors. Dysregulation o...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.4960200103
更新日期:1997-01-01 00:00:00
abstract::The purpose of this study is to describe the use of angioscopes in flowing bloodstreams of animals and humans, to demonstrate the ability to precisely deliver laser energy to an intravascular target using visual guidance and to determine the information content and spatial content of angioscopy. Angioscopy was perform...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960080202
更新日期:1985-02-01 00:00:00
abstract::Hyperkalemia was associated with complete heart block in one patient that resolved by first showing right anterior hemiblock). Then the right bundle branch block resolved, leaving the marked left axis deviation that was present before the hyperkalemic episode. Another patient with hyperkalemia had right bundle branch ...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960040110
更新日期:1981-01-01 00:00:00
abstract::Data from clinical trials with benazepril suggest that the safety profile of benazepril is similar to that of other angiotensin-converting enzyme (ACE) inhibitors. Treatment-related side effects occurred in 20% of benazepril-treated patients and in 18% of patients receiving placebo. The most commonly reported side eff...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.4960141805
更新日期:1991-08-01 00:00:00
abstract::To enhance the bedside diagnosis of tricuspid regurgitation, the influence of manual pressure applied below the liver on lower left sternal border murmurs was determined in 23 patients. All 23 subjects had right ventriculograms and right atrial phonocardiograms. The sign was positive in 13 cases, including 3 who were ...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960060605
更新日期:1983-06-01 00:00:00
abstract:BACKGROUND:Atherosclerosis is widely accepted as a chronic inflammatory disease. Research paid much attention to sensitive specific serum biomarkers for vulnerable plaques. The markers not only serve as diagnostic tools for the identification of patients with acute coronary syndrome (ACS), but also help us to identify ...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.20254
更新日期:2008-09-01 00:00:00
abstract:BACKGROUND:Insulin resistance is clearly associated with coronary artery disease (CAD) in diabetics. Insulin resistance may also be present in normoglycemic individuals, and some of these patients can be diagnosed as having metabolic syndrome (MS) according to various definitions. However, the relationship between hype...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.20379
更新日期:2009-01-01 00:00:00
abstract:BACKGROUND:This study investigated the impact on all-cause mortality of airflow limitation indicative of chronic obstructive pulmonary disease or restrictive spirometry pattern (RSP) in a stable systolic heart failure population. HYPOTHESIS:Decreased lung function indicates poor survival in heart failure. METHODS:Inc...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.22802
更新日期:2017-11-01 00:00:00
abstract::In patients with malignant ventricular arrhythmias, antiarrhythmic therapy is known to carry a substantial risk of proarrhythmia. This risk is usually considered to be low when supraventricular arrhythmias or benign ventricular arrhythmias are considered. We were able to collect data on four patients without a history...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960170410
更新日期:1994-04-01 00:00:00
abstract:BACKGROUND:Plaque rupture with subsequent transient thrombotic coronary occlusion by a fast-dissolving clot is one of the proposed pathogenic mechanisms in Takotsubo cardiomyopathy (TC). HYPOTHESIS:The aim of this study was to seek evidence for the hypothesis of transient coronary thrombosis as the underlying mechanis...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.20747
更新日期:2010-05-01 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
abstract:BACKGROUND:Although ischemic threshold reportedly is lower in the early morning than in the afternoon, the mechanisms that account for the diurnal change in minimal coronary vascular resistance in the potentially ischemic area are unknown. HYPOTHESIS:We hypothesized that calcium-channel blockers and alpha 1 blockers m...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960210512
更新日期:1998-05-01 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: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::To clarify the clinical significance of the negative U wave during acute myocardial ischemia, the appearance of the U wave and ST-segment elevation on electrocardiography during percutaneous transluminal coronary angioplasty (PTCA) of the left anterior descending artery (LAD group: 11 patients) or right coronary arter...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960140311
更新日期:1991-03-01 00:00:00
abstract::The treatment of hypertension continues to be challenging due to the lack of understanding regarding underlying modulators of blood pressure as well as co-existing conditions such as atherosclerosis and diabetes. This has led to uncertainty regarding treatment strategy and intensity. The INternational VErapamil SR/tra...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960241705
更新日期:2001-11-01 00:00:00
abstract::Cardiogenic shock usually is the result of marked depression in myocardial function. Rapid recognition and stabilization are essential if the patient is to survive. A variety of cardiovascular conditions can lead to cardiogenic shock; the most common of these is acute myocardial infarction. Once stabilization of the c...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.4960160305
更新日期:1993-03-01 00:00:00
abstract::Despite the proven benefits of using antiplatelet therapy in patients undergoing percutaneous coronary intervention (PCI), a number of key questions remain to be answered. In recent years, clopidogrel dosing strategies among such patients have evolved considerably, with newer approaches involving loading doses prior t...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:10.1002/clc.20359
更新日期:2008-03-01 00:00:00
abstract::Three randomized, clinical trials of the drug ranolazine relate to patients with symptomatic myocardial ischemia. A fourth randomized, controlled, clinical trial compares optimal medical therapy with percutaneous coronary intervention (PCI) plus medical therapy. ...
journal_title:Clinical cardiology
pub_type: 社论
doi:10.1002/clc.20406
更新日期:2008-07-01 00:00:00
abstract::Auscultation was compared to two-dimensional echocardiography (2D echo) and Doppler ultrasonography in 140 consecutive patients referred for evaluation for suspected mitral valve prolapse (MVP) to asses the precision of the two diagnostic methods. Ninety patients (64%) had midsystolic clicks, of which 42 (47%) had MVP...
journal_title:Clinical cardiology
pub_type: 杂志文章
doi:10.1002/clc.4960110608
更新日期:1988-06-01 00:00:00
abstract::Experimental and clinical studies with angiotensin-converting enzyme (ACE) inhibitors have suggested that these agents may reduce the risk of atherothrombotic events. Recent studies have identified the role of angiotensin II and ACE in the regulation of fibrinolysis. There is now substantial evidence that the renin-an...
journal_title:Clinical cardiology
pub_type: 杂志文章,评审
doi:
更新日期:1997-11-01 00:00:00
abstract:BACKGROUND:In patients with atrial fibrillation (AF), despite adequate anticoagulation, ischemic stroke (IS) is an uncommon yet concerning occurrence. HYPOTHESIS:Specific laboratory parameters may affect the efficacy of warfarin despite therapeutic international normalized ratio (INR) in patient with AF who present wi...
journal_title:Clinical cardiology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1002/clc.22838
更新日期:2017-12-01 00:00:00