QT interval (adjusted for heart rate) of electrocardiogram (ECG) is the current measure for assessing cardiac safety of noncardiac drugs in drug development. It measures the length between the onset of the Q-wave and the offset of the T-wave. Many single-lead methods are developed to ...
Evaluation of the fetal QT interval using non-invasive fetal ECG technology Fetal electrocardiogram data were recorded from 22 laboring women at term using the NI-FECG and an invasive fetal scalp electrode simultaneously. A total ... J Behar,T Zhu,J Oster,... - 《Physiological Measurement》 被...
Long QT SyndromeDeep LearningClassificationFor decades, ECG segmentation and QT interval measurement have been two fundamental steps in ECG-based diagnosis of the long QT syndrome (LQTS). However, due to the subjective nature of the definition of Q and T wave boundaries and confusion with an ...
Performance characteristics of ECG measurement methodologies have rarely been studied prospectively.We conducted a randomized, placebo-controlled, crossover study in 24 subjects to evaluate effects of moxifloxacin on the Fridericia rate-corrected QT (QTcF) interval. Five ECG replicates were obtained at 30...
QT-intervalBackground To assess the diagnostic accuracy of a single-lead portable ECG device for measuring QTc-intervals in comparison with a standard 12-lead ECG. Methods Adult patients visiting the cardiology outpatient clinic for a 12-lead recording were also measured with a portable single-lead...
QT‐intervalBackground To assess the diagnostic accuracy of a single‐lead portable ECG device for measuring QTc‐intervals in comparison with a standard 12‐lead ECG. Methods Adult patients visiting the cardiology outpatient clinic for a 12‐lead recording were also measured with a portable single...
(tN), wherein the QT interval is defined as the start of the Q wave and T wave of the ECG cycle is completed, and during the retraction of the end (SP) of (tN) of the measured arterial pressure which is limited to a point of measurement, the measurement of the arterial pressure ...
portable deviceQTcQT‐intervalTo assess the diagnostic accuracy of a single‐lead portable ECG device for measuring QTc‐intervals in comparison with a standard 12‐lead ECG.doi:10.1111/anec.12683Charlotte L. BekkerFauve NoordergraafSteven Teerenstra...
The leads in which the measurement is most often made often do not show the longest QT interval, likely a consequence either of abnormal repolarization, abnormal conduction, or both. Furthermore, the measurement is not and cannot be used in the presence of conduction block or ventricular paced ...
The ECG device is used to record the electrical activity of the heart via electrodes in contact with patient's skin. By altering the shape of its constituent waves (P, QRS and T) the method conveys information about the heart's activity and possible conditions in a standardized format [4]...