NORMAL QRS INTERVAL IN LEFT BUNDLE-BRANCH BLOCK. REVIEW OF THE LITERATURE AND PRESENTATION OF A CASE *Journal of the American Geriatrics SocietyWILLIAM SCHWARTZ M.D
However, little was known about one important measure of HRV, the root mean square of successive heartbeat interval differences (RMSSDs). Another fundamental measure SDNN indicates standard deviation of normal to normal R-R intervals, where R is the peak of a QRS complex (heartbeat). Compared...
Typical time windows for EEG signal processing range in the interval [1-10] s (Apicella et al., 2022). Furthermore, findings from a functional magnetic resonance imaging (fMRI) study (Caseras et al., 2010) indicate that brain activation increases compared to normal values within the time...
Once stable, the interval from stimulus to QRS onset was 45 ± 18 ms, in keeping with ventricular activation via the His Purkinje system. In 2 of those first 6 patients, the VT was terminated by His pacing (Fig. 5). In a single patient, we performed dual chamber His bundle ...
In this position, the bias is low when averaging in both 5 s and 30 s. Differently, B-A plots show that there are differences when the situation involves some level of physical activity, especially for shorter epochs. That is, the discrepancy between devices and the ECG was greater when ...
Various time-domain HRV indices were examined, including the mean of the normal-to-normal RR interval (MeanRR), the root mean square of successive differences between adjacent RR intervals (RMSSD), and the standard deviation of normal-to-normal RR intervals (SDNN). Additionally, frequency-domain...
The present invention is used to observe cardioventilato... R Depaola,S Ostlund - US 被引量: 142发表: 1990年 Dynamic Beat-to-Beat Modeling of the QT-RR Interval Relationship: Analysis of QT Prolongation during Alterations of Autonomic State versus Human Ether a-go-go-Related Gene ...
目的:探讨碎裂QRS波(fragmented QRS complexes,fQRS)与心功能接近正常的冠心病患者心室同步性的关系。方法:176例窄QRS波、左室射血分数接近正常(≥50%)的冠心病患者(68±9岁,男性145名,女性31名),根据心电图有无fQRS分为fQRS阳性组和fQRS阴性组。采用组织多普勒技术测量左室各节段收缩速度,速度达峰时间,并计算...
Timothy syndrome (TS), also called long QT syndrome type 8, is one of the most lethal variants of long QT syndrome (LQTS). Unlike most forms of the disease, TS is a syndromic, multi-organ disease associated with an extreme QT interval prolongation and a high rate of lethal ventricular ar...
Annotation or Localization A deep learning approach for fetal qrs complex detection RNN Physiol. Meas. 2018 Annotation or Localization Localization of origins of premature ventricular contraction by means of convolutional neural network from 12-lead ECG CNN IEEE Trans. Biomed. Eng. 2017 Annotation or ...