ECG-Derived Cheyne-Stokes respirations are associated with acute coronary syndrome, transient ischemia and elevated biomarkers
Background: Cheyne-Stokes respiration (CSR) has been associated with heart failure and an increased risk for mortality; yet, CSR has not been described in hospitalized patients with acute coronary syndrome (ACS). The purpose of this study was to examine if CSRs were associated with a final diagnosis of ACS, transient myocardial ischemia, and elevated cardiac biomarkers (i.e., troponin and Brain Natriuretic Peptide). (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - January 1, 2018 Category: Cardiology Authors: Adelita Tinoco, David Mortara, George W. Rodway, Bruce A. Cooper, Michele M. Pelter Source Type: research
Automated quantitative assessment of QRS fragmentation can improve non-invasive risk stratification
Objectives: Fragmented QRS (fQRS) on a 12 lead electrocardiogram is associated with all-cause mortality and sudden cardiac death. Currently, the appreciation of fQRS on the 12 lead ACG is based on a visual assessment creating potential bias by inter- and intra-observer variability. With this subjective technique additional information about the morphology of the notches in fQRS is also neglected. We aimed to develop an automated quantitative assessment of fQRS. (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - January 1, 2018 Category: Cardiology Authors: B. Vandenberk, G. Goovaerts, C. Garweg, J. Ector, S. Van Huffel, R. Willems Source Type: research
Pulse oximetry parameters to augment detection of myocardial ischemia – A feasibility study
Background: Because ST segment displacement on the ECG is sensitive but nonspecific for identifying episodes of ischemia, e.g. during exercise testing and extended periods of patient monitoring, echocardiography or radionuclide imaging is often used to augment the ECG. Unfortunately, these imaging tests are expensive and are impractical for continuous monitoring. Myocardial ischemia is associated with increased systemic vascular resistance (SVR) due to increased peripheral alpha-adrenergic sympathetic tone and this increased SVR typically helps elevate arterial blood pressure (BP). (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - January 1, 2018 Category: Cardiology Authors: Jessica Z ègre-Hemsey, Robert A. Warner Source Type: research
Spatial indices of repolarization correlate with non-ST elevation myocardial ischemia in patients with chest pain
Background: Mild-to-moderate ischemia does not generally result in ST segment elevation on the ECG, but rather it frequently results in non-specific, dynamic changes in the T wave. These repolarization changes are frequently considered non-diagnostic for ischemia, warranting further diagnostics that are costly and time-consuming. Robust methods to quantify such T wave heterogeneity can have immediate clinical applications. We sought to evaluate the effects of spontaneous ischemia on the evolution of spatial T wave changes in patients undergoing nuclear cardiac imaging for evaluating intermittent chest pain. (Source: Journa...
Source: Journal of Electrocardiology - January 1, 2018 Category: Cardiology Authors: Salah Al-Zaiti, Ervin Sejdic, Jan Nemec, Kelsey Walden, Clifton Callaway, Prem Soman, Robert Lux Source Type: research
Variable diagnostic accuracy in reading ECGs in a nurse-led primary PCI pathway
Background: The electrocardiogram (ECG) remains as the crucial tool to diagnose acute ST-elevation myocardial infarction (STEMI). Activation of the cardiac catheterization team to perform primary percutaneous coronary intervention (PPCI) largely depends on the interpretation of the ECG at the time of first medical contact with the patient. In Northern Ireland, if the referrer decides that the ECG shows a STEMI they would then transmit the ECG to a designated coronary care nurse who then decides whether to activate the PPCI pathway or to transfer the patient to the nearest emergency department (ED). (Source: Journal of Electrocardiology)
Source: Journal of Electrocardiology - January 1, 2018 Category: Cardiology Authors: Adam Canning, Raymond R. Bond, Dewar D. Finlay, Daniel Guldenring, Godfrey Aleong, Aaron Peace Source Type: research
