hertz

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Synonyms for hertz

German physicist who was the first to produce electromagnetic waves artificially (1857-1894)

German physicist who with James Franck proved the existence of the stationary energy states postulated by Bohr (1887-1975)

References in periodicals archive ?
Ambulatory ECG-based T-wave alternans and heart rate turbulence can predict cardiac mortality in patients with myocardial infarction with or without diabetes mellitus.
For these reasons, automatic algorithms have been developed to determine the beginning of the QRS complex and the end of the T-wave.
R-wave voltage was greater than 5 mm in V1 with ST segment depression and T-wave inversion in V1-V3.
ST-segment depression and T-wave inversion: classification, differential diagnosis, and caveats.
Interestingly, serial ECGs demonstrated resolution of his ST segment elevation after four hours, upon which diffuse and deep inferolateral T-wave inversion became prevalent.
Conclusion: The classical pattern of biphasic T-wave inversion on electrocardiogram was seen associated with stenosis in the proximal as well as middle part of the left anterior descending coronary artery.
QT intervals were taken from the onset of the QRS complex to the end of the T-wave, which was defined as the point T-wave returned to TP baseline (7).
T-wave alternans (TWA) is a non-invasive marker of the vulnerability to ventricular arrhythmia (1).
Now, doctors have completed the first systematic test of using T-wave alternans for making decisions about implanting defibrillators.
would have tremendous implications for the cost-benefit ratio of this form of treatment," noted the cardiologist at a session on T-wave alternans testing.
SAN FRANCISCO -- The search is on for a more reliable predictor of patients with heart failure likely to benefit from an implantable cardioverter defibrillator--and T-wave alternans shows the most promise, Dr.
In multiple clinical studies, the microvolt T-wave alternans testing has been shown to identify accurately both the high- and low-risk patients," explains Dr.
NASDAQ-CAMH), Bedford, Mass, has announced that clinical results, presented at the annual meeting of the American Heart Association demonstrate that Microvolt T-Wave Alternans (MTWA) testing can help determine which MADIT II type patients (prior myocardial infarction and left ventricular ejection fraction of 30% or less) should receive an implantable cardioverter defibrillator (ICD).
Microvolt T-Wave Alternans Test Identifies Latent Risk for Sudden Cardiac Arrest
Medical researchers recently concluded the first systematic test in which they weighed one such promising factor--an electrical characteristic called T-wave alternans--for deciding who should get a defibrillator.