Efficacy of cardiac resynchronized therapy on patients with a fragmented QRS complexQRS波 患者 治疗 心脏 碎裂 同步 CRT显示 超声心动图HAO JieDepartment of Cardiologyvip岭南心血管病杂志(英文版)
The QRS duration in the ECG tracing has been well used as a prognostic indicator of the clinical effectiveness of synchronized BiV pacing14,33. The widening of QRS duration is clinically associated with worsening hemodynamics due to electrical blocks in the conduction system. In this study, the ...
A 71-year-old female was admitted with the diagnosis of heart failure. Electrocardiograms revealed left bundle branch block with QRS width of 144 ms, and frequent premature ventricular complexes (PVCs). A CRT device was implanted, and sLVP via a CRT algorithm was provided. Frequent PVCs arising...
Following the QRS complex, the cardiac cycle is completed with the T wave which is separated from the QRS complex by about 250 milliseconds. The T wave is relatively long in duration of, for example, on the order of 150 milliseconds. It is during the T wave that the heart is most vulne...
Noninvasive Electrical Mapping Compared with the Paced QRS Complex for Optimizing CRT Programmed Settings and Predicting Multidimensional Response The aim was to test the hypothesis that left ventricular (LV) and right ventricular (RV) activation from body surface electrical mapping (CardioInsight 252......
with a slow decay between each QRS complex. The output will equal the positive input plus the voltage drop across the diode 92 during the rising peak of the QRS complex. Once the peak has passed, the operational amplifier 90 goes to the negative limit while the capacitor 94 slowly decays....
In operation, an external ECG monitor (40) is detected by the patient (10) of the heart (11) exterior ECG waveform (50) or the external ECG waveform (50) of the at least one QRS complex of the external ECG monitor (40) generating an external synchronization pulse as an indicator of ...
Conclusions The f QRS complex has good predictive value for responsiveness to CRT. Non-f QRS complex patients with refractory heart failure may benefit more from CRT, and these patients need to receive this treatment as early as possible.doi:CNKI:SUN:LNXY.0.2015-02-005HAO JieSUN PinJI Yang...
In operation, external ECG monitor (40) generates a synchronized cardioversion input signal as one of an external ECG waveform (50) of a heart (11) of a patient (10) or an external synchronized pulse (51) indicative of a detection by the external ECG monitor (40) of at least one QRS ...
In operation, external ECG monitor (40) generates a synchronized cardioversion input signal as one of an external ECG waveform (50) of a heart (11) of a patient (10) or an external synchronized pulse (51) indicative of a detection by the external ECG monitor (40) of at least one QRS ...