Time-frequency analysis of the QRS complex was based on the modified Wigner distribution, which is well suited to examine nonstationary character of data. Standard time-domain analysis for the presence of late potentials was used for comparison. High-frequency (≥90 Hz) components, separable from...
Objective To explore the relativity of normal QRS complex duration(QRSd) and heart failure. Methods155 patients with chronic heart failure( HF) were admitted,and 40 persons without heart failure were choosed as controls. According to the measurements of QRSd,patients of HF were classified into ...
2. 2. The average duration of the QRS complex in 100 normal adults was 0.0777 second. Fifty of the patients were males with an average duration of the QRS time interval of 0.0833 second, and 50 were females with a shorter time interval of 0.0722 second. The average duration of the QRS ...
The term "electrical axis" generally refers to the QRS complex. A simple, though not precise,method of calculating the quadrant (or parts of a quadrant) in which the EA is located consist of using the maximal QRS deflection in leads 1 and AVF and if necessary, lead 11 (see figure 94-...
4. A QRS complex was found in both Leads V1 and V2 in two cases, but was not present in leads further to the left. An initial Q with succeeding R was not found in leads over the right ventricle, but was present in at least one lead over the left ventricle in approximately two-thi...
In normal sinus rhythm, what does the P-wave, the PR interval, QRS complex, and QT interval reflect?ECG:An ECG, or electrocardiogram, is an electrical readout of the heart which measures the electrical output of all heart chambers during cardiac cycles. Th...
The QRS complex was found to lengthen slightly towards the end of labour, but the R-T interval and ST segment displacement displayed no significant changes. Get PDF (707K) More content like this Find more content: like this article Find more content written by: C. J. Marvell D. L. ...
(over the cardiac cycle, synchronized with the QRS complex of ECG) were taken in scattered locations throughout the LV and RV epicardium. We used measured electrical data to spatially and temporally modulate the heterogeneity of active contraction. When modeling MI, contraction was shut down in ...
The QT interval extends from the beginning of the QRS complex to the end of the T wave. Since the report of Jervell and Lange-Nielsen in 1957, it has been difficult to determine whether to measure a QT or a QU interval. U waves are more ... GA Jr - 《American Journal of Cardiology...
between the genome and transcriptome varies based on tRNA (f) and rRNA (g) secondary structures. Theyaxis represents the log2-transformed ratio of clone-VAF in RNA to clone-VAF in DNA. Mutations with clone-VAF lower than 0.01 were excluded. One-sided Wilcoxon test. IQRs, interquartile ...