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Related to Bundle branch block: Left bundle branch block, Right bundle branch block
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References in periodicals archive ?
Right bundle branch block, persistent ST segment elevation and sudden cardiac death: a distinct clinical and electrocardiographic syndrome.
3] in the absence of complete Right Bundle Branch Block (RBBB) (repolarization criteria).
in the AV node, in a patient who also has right bundle branch block.
Echocardiography (ECG) shows different changes in the form of sinus tachycardia, bundle branch blocks, intraventricular conduction defect, atrial and ventricular premature complexes, atrial fibrillation, ventricular tachyarrhythmia, ST segment elevation or depression, and T wave inversion.
A wide complex tachycardia has a QRS duration >120 ms and may be caused by one of the following mechanisms: (i) ventricular tachycardia, which must be the default diagnosis in any patient with a wide complex tachycardia; (ii) supraventricular tachycardia with a right or left bundle branch block or an intraventricular conduction abnormality; (iii) pre-excited tachycardia (Wolff-Parkinson-White syndrome) over an accessory pathway; and (iv) pacemaker tachycardia.
Interestingly, verapamil pretreatment in our model did result in diminution of ST elevation and reduction in bundle branch block from chest wall impacts, suggesting that these effects may be mediated via stretch induced [I.
Of the 15 patients whose ECGs showed arrhythmias (9 of whom were not aware that they had arrhythmias), 8 displayed premature ventricular contractions (PVCs), 3 had premature atrial contractions (PACs), 2 had atrial fibrillation, 1 had missed beats and 1 had a bundle branch block.
New analyses from a large study conducted in 2009, called MADIT-CRT, presented at the American College of Cardiology's 2014 Scientific Sessions in March, showed that CRT-D in patients with asymptomatic or mildly symptomatic heart failure (NYHA I/II) significantly reduces the risk of death or complications from heart failure when the patient has left bundle branch block, a condition that causes the left ventricle to contract later than the right ventricle.
Eppinger and Rothberger in 1909 and 1910 first acknowledged the importance of the conduction system, yet a confusion of the pattern of the left bundle branch block with the right bundle branch block resulted, and persisted for 25 years.
ACS--acute coronary syndrome MI--Myocardial infarction LBBB--left bundle branch block UA--unstable angina GFR--glomerular filtration rate PRA--pre-renal azotemia CRS--cardiorenal syndrome