Cardiovascular response in patients with and without myocardial ischaemia during dobutamine echocardiography stress test for coronary artery disease

1995 ◽  
Vol 15 (3) ◽  
pp. 249-263 ◽  
Author(s):  
S. Aakhus ◽  
K. Bjørnstad ◽  
L. Hatle
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Myocardial Ischaemia ◽  
Cardiovascular Response ◽  
Stress Test ◽  
Dobutamine Echocardiography ◽  
Artery Disease

scholarly journals High sensitivity cardiac troponins: Can they help in diagnosing myocardial ischaemia?

2017 ◽  
Vol 7 (6) ◽  
pp. 544-552 ◽  
Author(s):  
Enrico Orsini ◽  
Paolo Caravelli ◽  
Frank Lloyd Dini ◽  
Mario Marzilli
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Myocardial Ischaemia ◽  
Cardiac Troponin ◽  
Stress Test ◽  
Significant Proportion ◽  
High Sensitivity ◽  
Left Ventricular ◽  
Artery Disease ◽  
Test Result

Background: Cardiac troponin is the most sensitive marker of myocardial injury, but controversy still exists about its role in detecting ischaemia. Methods: To investigate the role of troponin as a marker of stress-induced ischaemia, circulating high sensitivity cardiac troponin T (hs-cTnT) was measured and compared with the MB fraction of creatine kinase (CK-MB) in 125 patients undergoing a stress test (53 electrocardiogram/echo exercise, 42 echo dipyridamole and 30 echo dobutamine tests). Results: Plasma concentrations of hs-cTnT increased after the tests in 90/125 patients, while an increase of CK-MB was seen in 31/125 patients ( p<0.0001). Overall, hs-cTnT significantly increased from 17.5±16.9 ng/l to 25.5±27.9 ng/l ( p<0.0001), without significant changes of CK-MB. Significant increments in hs-cTnT were documented after exercise test (from 15.9±11.9 ng/l to 19.5±13.6 ng/l, p<0.0001) and dobutamine test (from 20.6±20.8 ng/l to 37.8±31.1 ng/l, p=0.0006), in absence of changes in CK-MB according to each stressor. Among the 125 tests, 84 were diagnosed as negative and 41 as positive for myocardial ischaemia. Significant increments in hs-cTnT were detected after both negative (from 18.6±19.2 ng/l to 27.1±32.1 ng/l, p=0.0018) and positive test (from 15.2±10.8 ng/l to 22.3±16.2 ng/l, p=0.0005), without significant changes of CK-MB according to the test result. Despite a positive correlation between stress-induced increase of hs-cTnT and obstructive coronary artery disease, the release of troponin was observed also in a significant proportion of patients without coronary stenoses. Left ventricular hypertrophy markedly enhanced myocardial release of troponin. Conclusions: Circulating troponin increases in most patients undergoing a stress test, irrespective of the test result and of coronary artery disease. Plasma release of troponin depends on multiple pathogenetic mechanisms, making the biomarker a not reliable tool in detecting transient ischaemia.

scholarly journals Original paper: A new type of polyphenols-containing dietary supplement for correction of lipids and inflammatory markers in patients with coronary artery disease

2018 ◽  
Vol 24 (1) ◽  
pp. 22-28
Author(s):  
Kristaps Erglis ◽  
Iveta Mintale ◽  
Ieva Briede ◽  
Aldis Rozenbergs ◽  
Sanda Jegere ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Lipid Profile ◽  
Dietary Supplement ◽  
Linseed Oil ◽  
Stress Test ◽  
Reactive Protein ◽  
Artery Disease ◽  
Design And Methods ◽  
The Impact

Abstract Objective: To evaluate the impact of two original compositions of polyphenols-containing dietary supplement on lipid profile and level of C-reactive protein (CRP) in patients with angiographycally verified coronary artery disease (CAD). Design and methods: 167 patients were selected during their scheduled post-event elective bicycle stress-test examination. All patients received standard CAD therapy and permanent statin therapy and had elevated total cholesterol (TC > 5.0 mmol/L) and/or CRP (>3.5 mg/L) levels. The study consisted of 2 days of polyphenol depletion followed by a 12-week supplementation period in a randomized, blinded, placebo-uncontrolled parallel design. Two different compositions SILVA 1 (Quercetine, linseed oil and Resveratrol), and SILVA 2 (Quercetine, linseed oil and Pycnogenol) were tested. Results: All parameters changed compared baseline and 1 and 3 months in both groups. CRP decreased from 2.48 ± 1.62 mg/L at baseline to 1.97 ± 1.15 mg/L, high density cholesterol (HDL-C) increased from 1.18 ± 0.31 to 1.38 ± 0.34 mmol/L, also decrease of triglycerides (TG) from 1.5 to 1.29 mmol/L after 3 months treatment in SILVA I group was statistically significant (p < 0.001). Changes of parameters between baseline and 1 or 3 months in SILVA II group were not statistically significant. Hovewer, decrease of CRP (from 2.6 ± 1.28 to 2.41 ± 1.68), decrease of low density cholesterol (LDL-C from 2.95 ± 1.2 to 2.88 ± 1.21), increase of HDL-C (from 1.25 ± 0.22 to 1.34 ± 0.23), decrease of TC (from 5.2 ± 1.3 to 5.1 ± 1.28) and decrease of TG (from 1.4 ± 0.41 to 1.3 ± 0.38) can be counted as tendency of changes. Conclusion: This study reveals the superiority of treatment with statins in combination with composition containing Resveratrol for correction of lipid profile and inflamation marker CRP of patients with CAD

Diagnostic Value of the Updated Diamond and Forrester Score to Predict Coronary Artery Disease in Patients with Acute-Onset Chest Pain

Cardiology ◽  
2015 ◽  
Vol 133 (1) ◽  
pp. 10-17 ◽  
Author(s):  
Mathias Sørgaard ◽  
Jesper James Linde ◽  
Klaus Fuglsang Kofoed ◽  
Jørgen Tobias Kühl ◽  
Henning Kelbæk ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Coronary Artery Disease ◽  
Chest Pain ◽  
Coronary Artery ◽  
Diagnostic Accuracy ◽  
Stress Test ◽  
Photon Emission ◽  
Acute Onset ◽  
Emission Computed Tomography ◽  
Artery Disease

Objectives: In the recently updated clinical guidelines from the European Society of Cardiology on the management of stable coronary artery disease (CAD), the updated Diamond Forrester score has been included as a pretest probability (PTP) score to select patients for further diagnostic testing. We investigated the validity of the new guidelines in a population of patients with acute-onset chest pain. Methods: We examined 527 consecutive patients with either an exercise-ECG stress test or single-photon emission computed tomography, and subsequently coronary computed tomography angiography (CCTA). We compared the diagnostic accuracy of PTP and stress testing assessed by the area under the receiver operating characteristic curve (AUC) to identify significant CAD, defined as at least 1 coronary artery branch with >70% diameter stenosis identified by CCTA. Results: The diagnostic accuracy of PTP was significantly higher than the stress test (AUC 0.80 vs. 0.69; p = 0.009), but the diagnostic accuracy of the combination of PTP and a stress test did not significantly increase when compared to PTP alone (AUC 0.86 vs. 0.80; p = 0.06). Conclusions: PTP using the updated Diamond and Forrester Score is a very useful tool in risk-stratifying patients with acute-onset chest pain at a low-to-intermediate risk of having CAD. Adding a stress test to PTP does not appear to offer significant diagnostic benefit.

scholarly journals Association between Polymorphisms of Antioxidant Gene (MnSOD, CAT, and GPx1) and Risk of Coronary Artery Disease

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Hseng-Long Yeh ◽  
Li-Tang Kuo ◽  
Fung-Chang Sung ◽  
Chih-Ching Yeh
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Manganese Superoxide Dismutase ◽  
Medical Center ◽  
Stress Test ◽  
Genetic Effect ◽  
Multivariate Logistic Regression Model ◽  
Increased Risk ◽  
Artery Disease ◽  
Cad Risk

Objective. Reactive oxygen species (ROS) been cited as one of the major causes of atherosclerosis and coronary artery disease which are possible agents inducing DNA damage. Manganese superoxide dismutase (MnSOD), catalase (CAT), and glutathione peroxidase-1 (GPx1) have evolved to address primary defense against free radical mediated damage in mitochondria. The aim of this study was to delineate the association ofMnSOD,CAT, andGPx1polymorphisms and risk of CAD in Taiwan.Methods. We conducted a case-control study with 657 participants recruited at a medical center. All subjects were evaluated by noninvasive stress test and then quantitative coronary angiography to confirm the diagnosis of CAD. 447 CAD cases were defined as >50% stenosis of coronary artery and 210 controls were stenosed below 50%. Polymorphisms ofMnSOD(Val16Ala),CAT(C-262T), andGPx1(Pro198Leu) genes were determined by polymerase chain reaction methods. Multivariate logistic regression model was used to calculate the odds ratios (ORs) and 95% confidence intervals (CIs).Results. TheMnSODVal/Ala+Ala/Ala genotype was significantly associated with an increased risk of CAD compared to the Val/Val genotype (OR = 1.86, 95% CI = 1.15-3.01). This polymorphism was also associated with the severity of CAD of single and two vessel diseases. The corresponding ORs were 2.31 (95% CI = 1.32-4.03) and 1.92 (95% CI = 1.02-3.61), respectively. Among cigarette smokers, the harmful genetic effect ofMnSODAla allele on CAD risk was much higher (OR = 2.23, 95% CI = 1.02-4.88). However, the interaction betweenMnSODgenotype and cigarette smoking on CAD risk was not significant. No significant association betweenCATandGPx1polymorphisms and CAD risk was observed.Conclusion. Our results suggest thatMnSODpolymorphism is an independent risk factor for susceptibility to CAD in the Chinese population.

Abstract 13471: Additional Prognostic Value of Vasodilator Stress Cardiovascular Magnetic Resonance in Patients With Inconclusive Stress Test to Detect Coronary Artery Disease

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Theo Pezel ◽  
Guillaume Bonnet ◽  
Francesca Sanguineti ◽  
Marine Kinnel ◽  
Anouk Asselin ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Prognostic Value ◽  
Stress Test ◽  
Multivariable Analysis ◽  
Myocardial Scar ◽  
Major Adverse Cardiovascular Events ◽  
Inducible Ischemia ◽  
Artery Disease ◽  
Stress Cmr

Introduction: Non-invasive testing for ischemia to diagnose coronary artery disease(CAD) are frequently inconclusive(25%). Hypothesis: To assess the prognostic value of stress CMR in patients with a first inconclusive stress test. Methods: Between 2008 and 2018, consecutive patients with inconclusive stress test, defined by stress echocardiography or nuclear testing with uncertain conclusion, prospectively referred for stress CMR with dipyridamole were followed for major adverse cardiovascular events(MACE): cardiac death or myocardial infarction. An unsupervised clustering analysis was performed. Results: Of 1502 patients (62±12yrs, 59%men), 1397 completed the follow-up (median 5.5±2.3yrs). Three clusters were identified: Cluster 1 (n=524) had the highest prevalence of previous PCI, the highest presence of a myocardial scar defined, the lowest LVEF (35±7%) and the highest LV dilatation. Cluster 2 (n=406) had the highest previous CABG prevalence, preserved LVEF, absence of LV dilatation, and presence of myocardial scar. This cluster comprised predominantly male patients, with the highest rate of hypertension. Cluster 3 (n=572) had the lowest rate of previous PCI/CABG, the lowest rate of myocardial scar, predominantly female, the highest atrial fibrillation rate and body mass index. Survival analysis found significant differences across clusters for the occurrence of MACE (p=0.02). Inducible ischemia was associated with MACE occurrence in each cluster (C1, HR 2.28; 95%CI[1.31-3.99]; p=0.0028; C2, HR 3.37; 95%CI[1.97-5.75]; p<0.0001; C3, HR 2.73; 95%CI[1.67-4.46]; p<0.0001). In multivariable analysis, inducible ischemia predicted MACE in each cluster (p<0.001 for all). Conclusions: Cluster analysis identified 3 different phenotypes with distinct clinical and prognostic profiles. Within these clusters, stress CMR has an additional prognostic value to predict MACE..

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