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Results 351 - 400 of 515
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Gordon N F - - 1991
Over the past 30 years, mortality rates from coronary artery disease (CAD) have decreased by more than 30% in the United States. However, CAD remains the major public health problem in this country. There is now substantial evidence linking exercise training to a reduced risk for CAD and for mortality ...
Niemeyer M G - - 1991
Visual assessment and quantitative analysis of exercise thallium-201 myocardial perfusion scintigraphy was performed in 203 consecutive patients who underwent coronary arteriographic studies to identify the factors associated with false negative and false positive studies. Also the discordance between visual and quantitative analysis was evaluated. One hundred sixty-two (80%) of these ...
Vansteenkiste J J Department of Internal Medicine, University Hospitals, Catholic University, - - 1991
We evaluated the diagnostic usefulness of capnography curves during and following a hyperventilation provocation test (HVPT) in the hyperventilation syndrome (HVS). The diagnosis of HVS was based on the Nijmegen questionnaire and on the reproduction of symptoms during HVPT. Capnography curves of 40 HVS patients, 40 non-HVS patients with psycho-somatic ...
Miyakoda H - - 1990
To evaluate the diagnostic value of an exercise-induced increase in R-wave amplitude (RWA) for detecting coronary artery disease (CAD), treadmill testing using the modified Bruce protocol was performed on a CASE II computerized system (Marquette) in 10 healthy young men, 35 patients (pts) with CAD, 22 subjects with normal coronary ...
Sakata K - - 1990
To assess the fibrinolytic system in patients with exercise-induced ischemia and its relation to ischemia and severity of coronary artery disease (CAD), 47 patients with CAD confirmed by results of coronary angiography underwent symptom-limited multistage exercise thallium-201 emission computed tomography. All patients with CAD had exercise-induced ischemia as assessed from ...
Cottier C - - 1990
In view of the high incidence and mortality of coronary artery disease (CAD) in patients with kidney transplantation, a systematic cardiac evaluation was prospectively performed in 103 uraemic patients eligible for transplantation. After clinical examination, 28 patients with symptoms of CAD or diabetes mellitus were referred directly for coronary angiography, ...
Lind P - - 1990
Today silent myocardial ischemia (SMI) is a well-recognized phenomenon. However, in the absence of clinical signs suggesting coronary artery disease (CAD), a streamlined diagnostic approach for precise clarification has proved to be difficult. Sensitivity and specificity of ergometric results are rather poor in symptom-free patients. Thus the question arises, whether ...
Laarman G J - - 1990
Intravenous dipyridamole thallium testing is a useful alternative procedure for assessing coronary artery disease (CAD) in patients who are unable to perform maximal exercise tests. Ischaemic ST segment depression and angina pectoris are frequently observed during the test, in particular when exercise is added to dipyridamole infusion. To establish the ...
Siegel W C - - 1990
The outcome of the diagnostic exercise test depends on such patient-related factors as age, maximum exercise heart rate, exercise time and severity of the underlying coronary artery disease (CAD). This study examined the hypothesis that type A behavior would affect the amount of effort expended, as indicated by the exercise ...
Miyahara T - - 1990
To define the factors that affect an abnormal postexercise systolic blood pressure (SBP) response and to verify the diagnostic value of that response in patients with coronary artery disease (CAD), we studied 33 normal subjects, eight patients with hypertension who had no CAD, and 42 patients with documented CAD who ...
Modesti P A - - 1990
The present work was performed to test the sensitivity of transcutaneous oximetry in evaluating the first stage of peripheral artery disease in patients with few symptoms. Eighteen nondiabetic patients, stage II according to Fontaine and classified according to their walking capability and Doppler examination, were investigated. Ten healthy subjects served ...
Montague T J - - 1990
Body surface ST integral maps were recorded in 36 coronary artery disease (CAD) patients at: rest; peak, angina-limited exercise; and, 1 and 5 min of recovery. They were compared to maps of 15 CAD patients who exercised to fatigue, without angina, and eight normal subjects. Peak exercise heart rates were ...
Miller T D - - 1990
Patients with 3-vessel coronary artery disease (CAD) and normal left ventricular (LV) function have a worse prognosis if they manifest ischemia during exercise testing. The present study determines if exercise radionuclide angiography can aid in the risk stratification of patients with 1- or 2-vessel CAD and impaired LV function (ejection ...
Sugiura T - - 1990
To evaluate the effect of propranolol on diastolic time (DT) during uninterrupted upright exercise, 11 men with normal coronary arteries receiving oral propranolol and 10 men with coronary artery disease (CAD) were studied by ear densitography. The DT-heart rate (HR) regression equation during exercise obtained from persons without CAD receiving ...
Laarman G J - - 1990
To determine the value and limitations of quantitative analysis of thallium-201 imaging after intravenous dipyridamole in combination with low level exercise, 81 patients with suspected coronary artery disease (CAD) were evaluated prospectively. The results of quantitative analysis were compared with the results of visual analysis. All patients underwent coronary arteriography ...
Romano M - - 1990
We compared the response of the systolic blood pressure (SBP) recovery ratio (obtained by dividing the SBP recovery values by the peak exercise values) during a treadmill exercise test in patients with chest pain and an angiographically normal coronary tree (n = 18) (C group), one or more greater than ...
Pace L - - 1989
The aim of this study was to determine whether the diagnostic capability of radionuclide angiography (RNA) in detecting coronary artery disease (CAD) might be improved by using several indices of left ventricular (LV) function in concert. Three different models (rest data, exercise data, and rest plus exercise data) were derived ...
McCance A J - - 1989
Cardiac and whole body [3H]norepinephrine kinetics were used to evaluate the response of overall and cardiac sympathetic activity to supine bicycle exercise in 31 patients with coronary artery disease (CAD) and in nine normal control subjects (group 1). Of the 31 patients with CAD, 20 developed evidence of myocardial ischemia ...
Morise A P - - 1989
To determine whether recent refinements in Bayesian methods have led to improved diagnostic ability, 3 methods using Bayes' theorem and the independence assumption for estimating posttest probability after exercise stress testing were compared. Each method differed in the number of variables considered in the posttest probability estimate (method A = ...
Jones N L - - 1989
The present study re-evaluated the accuracy of standards for maximal exercise capacity (Wcap) recently reported from our laboratory by examining the interaction between height and age on Wcap achieved and predicted in 1,071 subjects (732 males and 339 females). They underwent an incremental exercise test on a cycle ergometer using ...
Uno M - - 1989
It is thought that a hypercoagulable state contributes to the pathogenesis of coronary artery disease (CAD), but few sensitive markers have been available for detecting the state. In the present study the plasma level of thrombin-antithrombin III complex (TAT), a specific indicator of thrombin generation in blood, was investigated before ...
Dean E - - 1989
Many studies involving exercise testing fail to address the issue of practice. Those that do vary considerably with respect to the parameters of practice used. We evaluated the effect of two standardized practices on a horizontal submaximal exercise test performed on a treadmill. Healthy men (n = 20) with no ...
Cuomo S - - 1989
This study was performed to determine if QT prolongation before and during early exercise is related to the occurrence of exercise-induced ventricular arrhythmias (EIVA). EIVA occurred in 47 of 142 patients with angiographic evidence of coronary artery disease (CAD); no EIVA occurred among the 22 patients without CAD (OV). Resting ...
Stratmann H G - - 1989
Exercise stress testing is a well-established method for the diagnostic, prognostic, and functional assessment of patients with known or suspected CAD. A variety of alternative tests have been described in patients unable to perform leg exercise. Atrial pacing and dipyridamole imaging have been evaluated most extensively, and results compare favorably ...
Stover D E - - 1989
Because Pneumocystis carinii pneumonia (PCP) is so common among patients infected with the human immunodeficiency virus-1 (HIV-1), a quick, simple test to evaluate for its presence or absence would be helpful. We report our results on the role of an exercise blood gas test as a useful procedure for the ...
Gleeson P B - - 1989
The purpose of this study was to compare the oxygen consumption (VO2) during calisthenic exercises in middle-aged women (aged 43-63 years) with and without coronary artery disease (CAD). Indirect calorimetry was used to measure VO2 in 15 healthy women and 15 women with CAD. Four exercises were performed for three ...
Nesto R W - - 1989
Patients with coronary artery disease (CAD) have angina pectoris at varying levels of myocardial oxygen demand. Fluctuations in coronary blood supply due to dynamic changes in coronary vasomotor tone are believed to be responsible for this variation in angina threshold. Cutaneous cold application produces an inappropriate increase in coronary vascular ...
Uno M - - 1989
In present study, we investigated the fibrinolytic activities and plasma antigen levels of tissue plasminogen activator (tPA) before or after a submaximal exercise in patients with coronary artery disease (CAD). We also investigated tPA phenotypes in plasma by electrophoretic and immuno-blotting analysis. Euglobulin fractions obtained from plasma were submitted to ...
Fisher B M - - 1989
A group of five cardiovascular tests of autonomic neural function was studied in 115 asymptomatic insulin-dependent diabetic patients and nine patients with symptoms of diabetic autonomic neuropathy. In the asymptomatic group, 34 patients had one or more abnormal test. R-R variation during deep breathing was most frequently abnormal, but reliance ...
Babacan K M - - 1989
The association of lower extremity peripheral vascular disease (PVD) in patients undergoing coronary artery bypass (CAB) has been studied in two groups of patients who have been operated upon between January and May 1987. Group 1 consists of 125 cases in which only resting ankle-arm pressure index (AAPI) were evaluated. ...
Freeman M R - - 1988
The safety and efficacy of exercise electrocardiography and thallium scintigraphy early in the course of unstable angina pectoris were assessed 4.6 +/- 1.6 days after admission in 67 patients with unstable angina that stabilized after medical therapy. Coronary arteriography was performed in all patients 5.4 +/- 2.4 days after admission. ...
Feng S - - 1988
In order to detect impaired left ventricular (LV) function in coronary artery disease (CAD) patients using acceleration index (Ac) of impedance cardiography (ICG), exercise ICG was performed in 29 patients with chest pain but without CAD (Group 1) and 21 patients with CAD (Group 2), and their resting values were ...
Okin P M - - 1988
The ability of heart rate (HR) correction of exercise-induced ST-segment depression (the delta ST/HR index) to reduce the number of false positive exercise electrocardiograms during initial screening for occult coronary artery disease (CAD) was examined in active, asymptomatic men from the Army Reserve. Among 606 consecutive men given treadmill tests, ...
Alexopoulos D - - 1988
Relative changes in pulmonary blood volume (PBV) were assessed serially at first stage, peak and post-supine exercise in 13 young normal volunteers and 33 coronary artery disease (CAD) patients. Gated blood pool imaging was used with time corrected count calculation of a region over the lung and comparison to the ...
Acanfora D - - 1988
It has been previously reported that at treadmill exercise testing an abnormal ratio of recovery systolic blood pressure (SBP) to peak exercise SBP is more sensitive than exercise-induced angina or ST segment depression for diagnosing coronary artery disease (CAD). To investigate whether the SBP ratio keeps its diagnostic value during ...
Gribble M J - - 1988
To evaluate diagnostic criteria for bacteriuria in acutely spinal cord injured patients undergoing intermittent catheterization, we studied paired urine specimens obtained by suprapubic aspiration and intermittent catheterization. Culture of suprapubic aspirate was used to define presence or absence of bacteriuria. Fifty patients were studied for an average of 5 consecutive ...
Hanson P - - 1988
We evaluated 74 peripheral vascular disease (PVD) patients (54 men, age 61 +/- 7 years and 17 women, age 63 +/- 7 years) for potential coronary heart disease (CAD) using an arm exercise test (AET) protocol. All patients performed upright two-arm cranking using discontinuous stages of 2 minutes of exercise ...
Williams M A - - 1988
To evaluate the diagnostic significance and long-term follow-up data of patients with exercise-induced bundle branch block (BBB), 10,176 consecutive patients' exercise test data were reviewed and 50 patients found to have exercise-induced BBB. Clinical, exercise test and arteriographic data were analyzed along with follow-up data during a mean of 43 ...
Bauch C D - - 1988
Average hearing thresholds for 2,000, 3,000 and 4,000 Hz and ABR results were analyzed for 290 patients having some degree of cochlear hearing loss. As average hearing sensitivity in the 2,000- to 4,000-Hz range became poorer, the incidence of abnormal auditory brainstem responses (ABR) increased. When the 2,000-Hz threshold sensitivity ...
DeCaprio L - - 1988
We studied the influence of exercise level, severity of coronary artery disease (CAD), presence of previous myocardial infarction (MI), anterior or diaphragmatic, on the clinical value of exertional Q wave changes (Delta-Q). We retrospectively evaluated the exercise electrocardiograms of 62 patients without angiographic evidence of CAD and 133 patients with ...
Clements I P - - 1987
In 622 patients with known coronary artery anatomy, heart rate (HR).blood pressure (BP) product and left ventricular (LV) ejection fraction (EF) at maximal supine exercise measured by radionuclide ventriculography were used to estimate, by logistic regression analysis, the probabilities of absence of significant coronary artery disease (CAD), presence of significant ...
Pearson H J - - 1987
Ingrowing of the nail of the hallux has been ascribed to an abnormality of the shape of the nail; our prospective study was planned to test this association. Twenty-three consecutive patients and 23 age-matched controls were assessed by caliper measurement and standard photographs, before a first operation for ingrowing toenail. ...
Bonow R O - - 1987
Patients with coronary artery disease (CAD) may undergo periods of reversible myocardial ischemia without experiencing angina. To study the prognostic implications of "silent" myocardial ischemia induced by exercise, exercise electrocardiography and radionuclide angiography were performed in 131 consecutive patients with CAD, preserved left ventricular (LV) function at rest and mild ...
Tebbe U - - 1987
In 10 controls and 43 patients with coronary artery disease (CAD) left ventricular (LV) diastolic pressure-volume (P-V) curves were obtained from biplane ventriculograms and simultaneous high fidelity pressure measurement at rest and during bicycle exercise. During exercise ventriculography 20 patients had angina pectoris, and 16 patients were asymptomatic. At rest ...
Shikano M - - 1987
We studied the levels of thromboxane B2 (TXB2), 6-keto-prostaglandin F1 alpha (6-keto-PGF1 alpha), platelet aggregability, beta-thromboglobulin and platelet factor 4 in 30 coronary artery disease (CAD) patients and 21 normal subjects during exercise. During treadmill exercise, 13 of 30 CAD patients reported chest pain. We administered a selective thromboxane synthetase ...
Weiner D A - - 1987
To determine whether exercise testing can identify higher risk patients with 3-vessel coronary artery disease (CAD) whose survival might be prolonged by coronary artery bypass grafting (CABG), the results of CABG were compared with those of medical therapy in 1,249 nonrandomized patients with 3-vessel CAD from the Coronary Artery Surgery ...
Ramage J E JE - - 1987
To study rest and exercise pulmonary capillary blood flow (Qc) and diffusing capacity (DLexh) assessed by the rapid analysis of methane, acetylene, and carbon monoxide during a single, slow exhalation, we evaluated 36 subjects during first-pass radionuclide angiography (RNA). At rest (N = 36) and at exercise (N = 21) ...
Gibbons R J - - 1987
The significance of a decline in systolic blood pressure (BP) during supine exercise was examined in 820 patients who underwent both supine exercise gated equilibrium radionuclide ventriculography and coronary angiography. Twenty-seven patients, 3% of the study population, had a decrease in systolic BP at peak exercise of more than 10 ...
Frass M - - 1987
R-wave amplitude (RWA) depends to a large extent on the left ventricular filling volume. Changes of RWA are attributed to the Brody-effect. Exercise has been shown to induce a decrease of RWA in a healthy population and an increase in patients with coronary artery disease (CAD). No clear data exist ...
Zachariah Z P - - 1987
Development of mitral regurgitation (MR) during acute myocardial ischemia is a well known occurrence. To assess the feasibility and clinical utility of detecting MR during exercise testing, color Doppler examinations were performed in 22 patients with angiographically proved coronary artery disease (CAD) and in 17 normal subjects before, during and ...
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