Depressed ST segment and/or negative T wave in leads with negative QRSĨ. Positive T wave in leads with upright QRS may be normal (positiveħ. ST and T waves usually opposite in direction to QRS.Ħ. V2, and V3, when small initial r waves can be discerned in the above leads.ĥ. R peak time greater than 60 ms in leads V5 and V6 but normal in leads V1, Present in the absence of myocardial pathology.Ĥ. Absent q waves in leads I, V5, and V6, but in aVL, a narrow q wave may be Occasional RS pattern in V5 and V6 attributed to displaced transition of QRSģ. Broad notched or slurred R wave in leads I, aVL, V5, and V6 and an J Cardiovasc Electrophysiol 2012īundle-Branch Block Morphology as a Predictor of Outcomeīilchick et al. QRS Axis and the Benefit of CRT in Patients with Mildlyīrenyo et al. ICD only) according to selected clinical characteristics in patients with or without LBBB Relative risk of primary end point (heart failure event or death) by treatment (CRT-D versus Resynchronization therapy with defibrillator versus implantable cardioverterĭefibrillator only) in patients with left bundle-branch block (LBBB), non. Europace 2008 10:566-571Ĭumulative probability of heart failure (HF) event or death according to treatment (cardiac Prevalence of mechanical dyssynchrony in heart Significance of QRS morphology in determining the QRS duration and morphology in consecutive pts QRS duration between responders and non-responders to CRT, using Random-effects meta-analyses of the weighted mean difference in baseline Therapy: Meta-analysis of Randomized Controlled Trials Impact of QRS Duration on Clinical Event Reduction With Cardiac Resynchronization – Arrhythmias (rapid AF, frequent ventricularįorest plot of parallel-arm randomized clinical trialsĬomparing outcomes by strata of baseline QRS duration Sufficient to predict a positive response
– A wide QRS (ie > 120 ms) is necessary but not
0 kommentar(er)
