ElectrocardiogramDiastolic functionSPECTBackground Current electrocardiographic (ECG) machines report various variables including frontal QRS axis automatically. We tested the hypothesis that QRS axis is associated with left ventricular...doi:10.1007/s12149-018-1257-9Kurisu, Satoshi...
A noteworthy Clue for diagnosing non-ST-elevation myocardial infarction by computed tomography without ECG synchronization:a case report[J]. BMC Cardiovasc Disord, 2020,20(1):244. DOI: 10.1186/s12872-020-01512-2 . 返回引文位置Google Scholar 百度学术 万方数据 [4] 中华医学会心血管病学分会,...
This is defined as the period between the beginning of the QRS complex (depolarization of the ventricles) and the end of the T-wave (repolarization of the ventricles) on an electrocardiogram (ECG). From: Stem Cells (Third Edition), 2021 ...
Electrocardiographic (ECG) signs of left ventricular hypertrophy (LVH) lack sensitivity. The aim was to identify LVH based on an abnormal spatial peaks QRS-T angle, evaluate its diagnostic performance compared to conventional ECG criteria for LVH, and its prognostic performance. This was an observati...
The surface ECG may reflect prolongation of the P-R interval andQRS intervalswithout significant effect on the RR interval.24Widening of the QRS is increased at faster heart rates or high plasma concentrations.25Widening of the QRS to greater than 25% has been recommended as a useful end point...
QRS complex (85.73 [+ or -] 8.20) was decreased after mental stress when compared to that of rest 87.47 [+ or -] 6.87 and it was statistically not significant and there was a decrease in QRS axis (63.41 [+ or -] 34.61) and PR interval (137.71 [+ or -] 18.78) during acute stres...
Usefulness of \\{QRS\\} Axis Change to Predict Mortality in Patients With Left Bundle Branch Block \\{QRS\\} duration correlates with poor prognosis in patients with left bundle branch block (LBBB), but the importance of left-axis deviation (LAD) is not ... Parin,J.,Patel,... - 《...
frontal plane QRS axisheart vectorneutral planenormal ECGpositive hemisphereprecordial planeSummary The neutral plane divides the space around the heart into two halves. The half along the positive side of the lead axis is the positive hemisphere. Any resultant heart vector in that hemisphere has a...
We separately generated ROC curves for predicting abnormal RV measurements from ECG variables.Results:\nWe included 782 patients (33% women, 71±14 years). Amongst the ECG variables, BSA-indexed Z-axis QRS-T VTI (VTI\nQRST-Z\n*√BSA) was the strongest independent predictor of all 5 RV ...
This study was conducted to test the hypothesis that the time-voltage integral of the QRS complex can improve the electrocardiographic (ECG) identification of left ventricular hypertrophy. Background. Standard ECG criteria have exhibited poor sensitivity for left ventricular hypertrophy at acceptable ...