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Electrocardiogram

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23281. Very early risk stratification after thrombolytic therapy with a bedside myoglobin assay and the 12-lead electrocardiogram. (PubMed)

Very early risk stratification after thrombolytic therapy with a bedside myoglobin assay and the 12-lead electrocardiogram. Available clinical criteria to estimate prognosis in patients with evolving ST-segment elevation myocardial infarction do not consider the impact of reperfusion therapy and do not incorporate measurement of baseline levels of cardiac serum markers. We evaluated the combination of a baseline myoglobin assay and early (60- to 90-minute) ST resolution for risk stratification (...) after ST-segment elevation myocardial infarction.In a prospective substudy of the Intravenous nPA for Treatment of Infarcting Myocardium Early-II (InTIME-II) trial carried out in 2079 patients, a rapid qualitative assay for myoglobin was performed immediately before thrombolysis. Serial 12-lead electrocardiograms were performed at baseline and 60 to 90 minutes after thrombolysis. ST resolution was categorized as complete (>/=70%), partial (30% to <70%), or none (<30%).Mortality rate at 30 days

2000 American heart journal Controlled trial quality: uncertain

23282. Electrocardiogram pattern in hypercholesterolemic women: the influence of hormone replacement therapy. (PubMed)

Electrocardiogram pattern in hypercholesterolemic women: the influence of hormone replacement therapy. The aim of this study was to delineate electrocardiogram (ECG) patterns in postmenopausal women with hypercholesterolemia and to assess the possible influence of female sex hormones.A total of 72 postmenopausal women with moderately elevated total cholesterol levels constituted the case group, of which 48 came from a clinical trial and 24 from a cohort study. Some 236 women aged 50-59 years

1998 Climacteric Controlled trial quality: uncertain

23283. Effect of electrocardiogram triggering on reproducibility of coronary artery calcium scoring. (PubMed)

Effect of electrocardiogram triggering on reproducibility of coronary artery calcium scoring. To test the hypothesis that computed tomographic (CT) scanning during early rather than middle diastole can significantly reduce the interscan variability of coronary artery calcium (CAC) scores.Five hundred thirty-eight patients were initially enrolled; 282 of them were found to have CAC at electron-beam CT and underwent repeat scanning to measure interscan variability with different electrocardiogram

2001 Radiology Controlled trial quality: uncertain

23284. Pulmonary arterial pressure and electrocardiograms in broiler chickens infused intravenously with L-NAME, an inhibitor of nitric oxide synthase, or sodium nitroprusside (SNP), a nitric oxide donor. (PubMed)

Pulmonary arterial pressure and electrocardiograms in broiler chickens infused intravenously with L-NAME, an inhibitor of nitric oxide synthase, or sodium nitroprusside (SNP), a nitric oxide donor. 1. Broilers were divided at 42 to 44 d of age into a Control group (n=30) and a Treatment group (n=30). The mean pulmonary arterial pressure (mPAP) and electrocardiogram (ECG) leads II and aV(F) were measured 1, 2 and 4 h after an intravenous injection of 0.9% saline (Control group) or Nomega-nitro-L

2002 British poultry science Controlled trial quality: uncertain

23285. The prognostic and therapeutic implications of increased troponin T levels and ST depression in unstable coronary artery disease: the FRISC II invasive troponin T electrocardiogram substudy. (PubMed)

The prognostic and therapeutic implications of increased troponin T levels and ST depression in unstable coronary artery disease: the FRISC II invasive troponin T electrocardiogram substudy. In unstable coronary artery disease, both increased troponin T level and occurrence of ST-segment depression are associated with a worse prognosis. In the Fast Revascularisation in InStability in Coronary disease trial II invasive study, we evaluated whether the troponin T level, alone and combined with ST (...) depression, identified more severe coronary artery disease or a greater efficacy of an early invasive strategy.In the study, 2457 patients with unstable coronary artery disease were randomized to early invasive or noninvasive strategy. Troponin T value and admission electrocardiogram results were available in 2286 patients.In the noninvasive cohort, death or myocardial infarction occurred in 16.6% with troponin T level > or =0.03 microg/L versus 8.5% with troponin T level < 0.03 microg/L (P <.001

2002 American heart journal Controlled trial quality: uncertain

23286. Recommendations for the standardization and interpretation of the electrocardiogram: part I: The electrocardiogram and its technology: a scientific statement from the American Heart Association Electrocardiography and Arrhythmias Committee, Council on Cli (PubMed)

Recommendations for the standardization and interpretation of the electrocardiogram: part I: The electrocardiogram and its technology: a scientific statement from the American Heart Association Electrocardiography and Arrhythmias Committee, Council on Cli This statement examines the relation of the resting ECG to its technology. Its purpose is to foster understanding of how the modern ECG is derived and displayed and to establish standards that will improve the accuracy and usefulness

Full Text available with Trip Pro

2007 Circulation

23287. Comparison of the amplitude of the P-wave from intracardiac electrocardiogram obtained by means of a central venous catheter filled with saline solution to that obtained via esophageal electrocardiogram. (PubMed)

Comparison of the amplitude of the P-wave from intracardiac electrocardiogram obtained by means of a central venous catheter filled with saline solution to that obtained via esophageal electrocardiogram. Recognition of the P wave is important for the correct characterization of atrial and ventricular arrhythmias. When the P wave is difficult to identify on standard electrocardiography (SECG), either esophageal electrocardiography (EECG) or intracardiac electrocardiography (IC-ECG), central

2006 American Journal of Cardiology

23288. Comparison of P waves recorded on the standard electrocardiogram, the "Lewis lead," and "saline-filled central venous catheter"-based intracardiac electrocardiogram. (PubMed)

Comparison of P waves recorded on the standard electrocardiogram, the "Lewis lead," and "saline-filled central venous catheter"-based intracardiac electrocardiogram. The feasibility of recording the intracardiac electrocardiogram (IC-ECG) through a saline-filled central venous catheter has been demonstrated. The importance of identifying P waves for the accurate characterization of arrhythmias has long been emphasized. The "Lewis lead" has been occasionally employed when the standard (...) electrocardiogram (SECG) fails to detect P waves. The objectives of this study were to compare the amplitude of P waves recorded by intracardiac and standard ECGs and the Lewis lead and to explore whether the latter has any advantages over either type of electrocardiography. The amplitudes of P wave (in millimeters) measured on SECG, the Lewis lead, and IC-ECG obtained through a saline-filled central venous catheter were compared; recordings were obtained through the intracardiac electrocardiographic distal

2004 American Journal of Cardiology

23289. Comparison of the five-electrode-derived EASI electrocardiogram to the Mason Likar electrocardiogram in the prehospital setting. (PubMed)

Comparison of the five-electrode-derived EASI electrocardiogram to the Mason Likar electrocardiogram in the prehospital setting. This study compared the 5-electrode-derived EASI electrocardiogram (ECG) with the conventional Mason-Likar ECG in 200 consecutive patients with chest pain transported to 3 hospitals by 2 different emergency medical services. No significant differences were observed between the 2 systems for the detection of relevant electrocardiographic abnormalities. A questionnaire

2005 American Journal of Cardiology

23290. Diagnostic conclusions from the EASI-derived 12-lead electrocardiogram as compared with the standard 12-lead electrocardiogram in children. (PubMed)

Diagnostic conclusions from the EASI-derived 12-lead electrocardiogram as compared with the standard 12-lead electrocardiogram in children. Fewer electrodes on more easily located places would facilitate electrocardiogram (ECG) recording. To investigate the possibility of simplifying ECG recording in children, we compared the diagnostic conclusions when interpreting standard versus EASI-derived 12-lead ECGs. Our hypothesis was that the variation of the interpretation of standard versus EASI

2006 American Heart Journal

23291. Recommendations for the standardization and interpretation of the electrocardiogram: part I: the electrocardiogram and its technology a scientific statement from the American Heart Association Electrocardiography and Arrhythmias Committee, Council on Clin (PubMed)

Recommendations for the standardization and interpretation of the electrocardiogram: part I: the electrocardiogram and its technology a scientific statement from the American Heart Association Electrocardiography and Arrhythmias Committee, Council on Clin This statement examines the relation of the resting ECG to its technology. Its purpose is to foster understanding of how the modern ECG is derived and displayed and to establish standards that will improve the accuracy and usefulness

Full Text available with Trip Pro

2007 Journal of the American College of Cardiology

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