QT interval measurement - Evaluation of automatic QTc measurement and new simple method to calculate and interpret corrected QT interval Assessment of repolarization duration is often recommended to avoid administration of QT-prolonging drugs in patients with prolonged QTc interval, a freque... B ...
The QT interval is measured from the beginning of the QRS complex to the end ofthe T-wave, and should be corrected for heart rate to enable comparison with reference values. However, the correct determination of the QT interval, and its value, appears to be a daunting task. Although ...
The evaluation of every electrocardiogram should also include an effort to interpret the QT interval to assess the risk of malignant arrhythmias and sudden death associated with an aberrant QT interval. The QT interval is measured from the beginning of the QRS complex to the end of the T-wave,...
Although the clinical evidence supporting their use is scarce, the off label use of these drugs has spread very quickly in face of the progression of the epidemic and the high mortality rate in susceptible populations. However, these medications can pathologically prolong the QT interval and lead ...
An algorithm for computer measurement of QT intervals in the 24 hour ECG It is hypothesized that (rapid) changes of QT interval duration can lead to life-threatening situations. To study the dynamics of QT interval duration, an ... A Algra,HL Brun,C Zeelenberg - 《Computers in Cardiology》...
Assessment of QT interval prolongation is an integral part of clinical studies in drug development because a prolonged QT interval can cause sudden cardiac death. Traditionally a linear or non-linear regression method is applied to estimate subject- or group-specific heart rate corrected QT intervals...
8.Code for measurement of reverberation time in hall厅堂混响时间测量规范 9.The Timed Vectorcardiogram: A Useful Tool to Measure QT Interval;时间向量图—测量QT间期的有用方法 10.Ultra-short Interval Measurement Based on TDC Technique基于时间数字转换技术的超短时间间隔测量 11.an instrument for measuring...
QT interval measurement: Q to T_ or Q to T_? PP Davey 被引量: 24发表: 1999年 Performance assessment of standard algorithms for dynamic R-T interval measurement: comparison between R-Tapex and R-Tend approach Three automatic approaches to ventricular repolarisation duration measurement (R-T ...
We measured the QTc interval in a subset of these patients (N = 65). RESULTS: Only 2 patients (3%) had a prolonged QTc interval. There was a statistical trend (p = .08) toward a lower QTc interval in patients receiving antipsychotic polypharmacy. QTc interval was associated with age (p...
Good consistent agreement, mean relative error of 5.01%, between estimated QT intervals and those of manual measurement by an experienced cardiologist was achieved. 展开 关键词: T-loop ECG signal analysis Singular value decomposition QT interval Automatic measurement ...