BACKGROUND: Prolonged QRS duration (QRS) has been associated with left ventricular dyssynchrony and dysfunction and with the development of heart failure. However, whether persistence or development of increased QRS over time is associated with an increased incidence of heart failure in hypertensive pat...
immediate and sustained (90 days) shortening of qrs duration with lvad support has been demonstrated, strongly correlated with improved ejection fraction and histological evidence of decreased myocyte diameter. to better elucidate the findings of the study by wang et al, it would be interesting to ...
This QRS duration was later used for the high-frequency analysis (Fig. 2)(17). The ST- segment level above or below the PR segment baseline at 60 ms after the J point was automatically measured in each lead. The ST deviation during inflation was determined with the preinflation SAECG as...
摘要: American Journal of Cardiology, The - Vol. 100 - N° 11 - p. 1665-1670 - Iconography : Usefulness of QRS Duration to Predict Response to Cardiac Resynchronization Therapy in Patients With End-Stage Heart Failure - EM|consulte...
Objective It is to observe the effect of paced QRS duration on heart function in patients with right ventricular apical pacing. Methods 76 patients with Ⅲ° atrioventricular block receiving pacemaker treatment were enrolled and stratified to group A(pQRSd 190 ms,n = 52) and groupB( pQRSd≥190...
The duration of the QRS complex reflects the time required for ventricular depolarization. Ventricular activation usually requires at least 0.075 second (75 msec, nearly two small boxes). There is some debate regarding the upper limit of the normal range for QRS duration; a recent consensus ...
A prolonged QRS interval suggests a diseased ventricular conduction system and has been associated with increased risk for sudden cardiac death, among other heart disorders. Study reveals links to abnormal rhythms behind sudden death, heart damage Because QT interval includes QRS duration, with the lat...
(28%) by both the QRS duration and the QRS-T angle, respectively. The QRS-T angle had a 50%, 57% 55% and 51% agreement in correctly classified cases and non-cases with the Sokolow-Lyon Index, Cornell voltage, Cornell Product, and QRS duration, respectively, yielding a Cohen’s kappa...
As well known, the physiologically normal adult QRS complex is 80–125 ms wide1,2. It has also been long understood3that in addition to the heart size and to the ventricular myocardial mass4, the duration of the QRS complex is influenced by the myocyte geometry and layer orientation5, Purk...
Herein, we report the potential effect of sodium-glucose cotransporter-2 inhibitors (SGLT2is) in improving the QRS duration and volume reduction in a patient with complete left bundle branch block (CLBBB) and reduced cardiac function. Case summary A 68-year-old man with a history of ischaemic...