Colorado Stream Quantification Tool (CSQT) - United States Army
网页The CSQT combines pre- and post-construction stream lengths with the values from applicable metrics, as determined by a watershed catchment assessment and other site-specific criteria, to produce...
T Wave Amplitude Correction of QT Interval Variability for …
网页2016年6月6日 · To adjust common QTV metrics for T wave amplitude dependency, we introduced a correction formula that yields T wave amplitude corrected standard deviation of QT intervals (cSDQT), offering the possibility for QTV measurement that is less sensitive to T waveform characteristics.
| Boxplots of QT standard deviation SDQT (A) and corrected QT …
网页We used standard QTV features including standard deviation of QT intervals and the QT interval variability index. To consider the inverse relationship between QTV and T wave amplitude, we included...
(PDF) Sex Differences in Nocturnal Ventricular Repolarization ...
网页The T wave amplitude-corrected QTV index (cQTVi) in REM sleep was predictive of CVD death (hazard ratio: 2.067, 95% confidence interval: 1.105-3.867, P 0.05) in a proportional hazards model. We demonstrated a significant impact of sleep stages on ventricular repolarization variability.
网页cSDQT (P = 0;976). Figure 2 shows the characteris-tics of SDQT, SDRR, cSDQT and mean T wave ampli-tude to sleep stage according to sex. SDQT, SDRR and cSDQT decreased from wakefulness to NREM3 sleep for both men and women. In REM sleep, SDQT, SDRR and cSDQT were above the level of NREM. Mean T wave am-
网页2018年9月21日 · The T wave amplitude-corrected QTV index (cQTVi) in REM sleep was predictive of CVD death (hazard ratio: 2.067, 95% confidence inter-val: 1.105–3.867, P 0.05) in a proportional hazards model. We demonstrated a significant impact of sleep stages on ventricular repolarization variability.
T Wave Amplitude Correction of QT Interval Variability for …
网页2016年6月7日 · | Boxplots of QT standard deviation SDQT (A) and corrected QT standard deviation cSDQT (B) for healthy TQT dataset and patients with non-ischemic cardiomyopathy (DEFINITE). | Results of...
网页T wave amplitude corrected measures cQTV, cSDQT, and cQTVi [14]. Additionally, we used the mean, median, min-imum, and maximum QT length. In total, we received 22 template features and 91 beat-to-beat features. 2.3.3. Signal Quality Indices We considered the signal quality entity by applying dif-ferent SQIs from the fecgsyn toolbox [15] to the ...
网页Results: A strong inverse relationship between T wave amplitude and QTV was demonstrated, both in healthy subjects (R2 = 0.68, p < 0.001) and DEFINITE patients (R2 = 0.20, p < 0.001). Applying the T wave amplitude correction to QTV achieved. 2.5-times better group discrimination between patients enrolled …
T Wave Amplitude Correction of QT Interval Variability for …
网页We found smaller T amp in TQT (74.35 ± 58.30 µV) compared to DEFINITE (187.18 ± 158.05 µV). SDQT showed significant differences [p < 0.005 (Student’s t-test)] between TQT (13.46 ± 8.81 ms) and DEFINITE (16.73 ± 10.41 ms). Similarly, cSDQT showed highly significant differences (TQT: 6.60 ± 2.77 ms; DEFINITE: 12.47 ± 7.36 ms; p < 0.001).
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