Diagnostic Utility of Signal-Averaged Electrocardiography for Detection of Cardiac Sarcoidosis
نویسندگان
چکیده
منابع مشابه
Uncertainty principle of signal-averaged electrocardiography.
BACKGROUND Signal-averaged ECG (SAECG) reproducibility is reported to have a component that is independent of residual noise. Methods and Results-In group 1, multiple paired SAECGs were obtained to noise levels of 0.3+/-0.1 and 0.5+/-0.2 microV. For the 0.5- and 0. 3-microV noise recordings, QRS duration (QRSd) was 101.2+/-11.3 and 104.6+/-9.6 ms, respectively (P<0.0001), and the differences in...
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این پایان نامه بدنبال بررسی کاربرد ارزیابی مستمر در یک محیط یادگیری زبان دوم از طریق طرح چهار سوال تحقیق زیر بود: (1) درک توانایی های فراگیران زمانیکه که از طریق برآورد عملکرد مستقل آنها امکان پذیر نباشد اما در طول جلسات ارزیابی مستمر مشخص شوند; (2) امکان تقویت توانایی های فراگیران از طریق ارزیابی مستمر; (3) سودمندی ارزیابی مستمر در هدایت آموزش فردی به سمتی که به منطقه ی تقریبی رشد افراد حساس ا...
15 صفحه اولSignal-averaged electrocardiography and detection of heart transplant rejection: comparison of time and frequency domain analyses.
To evaluate the role of the signal-averaged electrocardiogram (ECG) in the detection of heart transplant rejection, findings on 277 ECGs were compared with those in 218 endomyocardial biopsy specimens in 25 patients followed up for a median duration of 5.2 months (range 7 days to 17.5 months). Signal-averaged ECGs obtained at intervals of 16.4 +/- 22.3 days were analyzed in the time domain befo...
متن کاملDiagnostic and Therapeutic Management of Cardiac Sarcoidosis -Application of High Resolution Electrocardiography
Sarcoidosis is a common multisystem granulomatous disease of unknown etiology. Overall the prognosis is not necessarily deleterious because organ involvement is usually asymptomatic except for ocular or cutaneous involvements and the disease is often selflimiting. Cardiac Sarcoidosis is rare (5%) but once the heart is involved, the patient’s prognosis is poor because of the development of fatal...
متن کاملDetection and localization of prolonged epicardial electrograms with 64-lead body surface signal-averaged electrocardiography.
BACKGROUND Prolonged, fractionated ventricular electrograms often are detectable after myocardial infarction and are a marker for an arrhythmia-prone state. QRS late potentials detected on the body surface with signal-averaged electrocardiography (SAECG) are thought to arise from the diseased tissue that generates prolonged ventricular electrograms and as such are also a marker for arrhythmias....
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ژورنال
عنوان ژورنال: Annals of Noninvasive Electrocardiology
سال: 2011
ISSN: 1082-720X
DOI: 10.1111/j.1542-474x.2010.00411.x