ArticleAnnals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc2017
A new experimentally validated formula to calculate the QT interval in the presence of left bundle branch block holds true in the clinical setting.
Article in Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.
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Who cites it
10 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Electrocardiographic identification of drug effects: QT prolongation, arrhythmias, and clinical monitoring.European journal of clinical pharmacology · 2026Pooled it
- QTc interval measurement in patients with right bundle branch block: A practical method.Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc · 2023Article
- QTc evaluation in patients with bundle branch block.International journal of cardiology. Heart & vasculature · 2020Review
- QTc interval evaluation in patients with right bundle branch block or bifascicular blocks.Clinical cardiology · 2020Observational
- Novel approach to discriminate left bundle branch block from nonspecific intraventricular conduction delay using pacing-induced functional left bundle branch block.Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2018Article
- Incidence and outcomes of long QTc in acute medical admissions.International journal of clinical practice · 2018Observational
- Application of the Bogossian formula for evaluation of the QT interval in pacemaker patients with stimulated left bundle branch block.Clinical research in cardiology : official journal of the German Cardiac Society · 2018Observational
- Cutting off half of QRS duration can cause overcorrection of QT interval in left bundle branch block.Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc · 2017Article
- Reply: QT interval measurements in patients with left bundle branch block. There is yet more to learn about repolarization.Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc · 2017Article
- A new experimentally validated formula to calculate the QT interval in the presence of left bundle branch block holds true in the clinical setting.Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc · 2017Article
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17 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundThe evaluation of the QT interval in the presence of left bundle branch block (LBBB) is associated with the challenge to discriminate native QT interval from the prolongation due to the increase in QRS duration. The newest formula to evaluate QT interval in the presence of LBBB suggests: modified QT during LBBB = measured QT interval minus 50% of LBBB duration. The purpose of this study is therefore to validate the abovementioned formula in the clinical setting.
methodsValidation in two separate groups of patients: Patients who alternated between narrow QRS and intermittent LBBB and patients with narrow QRS who developed LBBB after transcatheter aortic valve implantation (TAVI).
resultsThe acquired mean native QTc intervals and those calculated by the presented formula displayed no significant differences (p > .99 and p > .75).
conclusionsIn this study we proved for the first time the validity and applicability of the experimentally acquired formula for the evaluation of the QT interval in the presence of LBBB in a clinical setting.
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