Right ventricular failure predicted from right bundle branch block: cardiac magnetic resonance imaging validation
| العنوان: | Right ventricular failure predicted from right bundle branch block: cardiac magnetic resonance imaging validation |
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| المؤلفون: | John F. Heitner, Barry I. Saul, Ali Ahmad, Mike Sood, Rahul Gaglani, Amaar El Sergany, Santhosh R. Devarapally, Sameer Arora, Terrence Sacchi |
| المصدر: | Cardiovascular Diagnosis and Therapy. 6:432-438 |
| بيانات النشر: | AME Publishing Company, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | medicine.medical_specialty, Ejection fraction, medicine.diagnostic_test, business.industry, Right bundle branch block, medicine.disease, QRS complex, Cardiac magnetic resonance imaging, Internal medicine, Heart failure, Cardiology, Medicine, Right ventricular failure, Original Article, Cardiology and Cardiovascular Medicine, Inverse correlation, business, Lead (electronics) |
| الوصف: | Right ventricular (RV) failure has proven to be independently associated with adverse outcomes. Electrocardiographic parameters assessing RV function are largely unknown, making echocardiography the first line for RV function assessment. It is however, limited by geometrical assumptions and is inferior to cardiac magnetic resonance imaging (CMRI) which is widely regarded as the most accurate tool for assessing RV function.We seek to determine the correlation of ECG parameters of right bundle branch block (RBBB) with RV ejection fraction (EF) and RV dimensions using the CMRI. QRS duration, R amplitude and R' duration were obtained from precordial lead V1; S duration and amplitude were obtained from lead I and AVL. RV systolic dysfunction was defined as RV EF40%. RV systolic dysfunction group (mean EF of 24±10%) were compared with normal RV systolic function group which acted as control (mean EF of 48±8%). CMRI and ECG parameters were compared between the two groups. Rank correlations and scatter diagrams between individual CMRI parameters and ECG parameters were done using medcalc for windows, version 12.5. Sensitivity, specificity and area under the curve (AUC) were calculated.RV systolic dysfunction group was found to have larger RV end systolic volumes (90±42Larger RV end systolic volumes seen with RV dysfunction can affect the latter part of right bundle branch leading to prolonged R' duration. We here found prolonged R' duration in lead V1 to have a highly specific inverse correlation to RV systolic function. ECG can be used as an inexpensive tool for RV function assessment and should be used alongside echocardiography to evaluate RV dysfunction when CMRI is not available. |
| تدمد: | 2223-3660 2223-3652 |
| DOI: | 10.21037/cdt.2016.04.02 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::85ef897f77a1adb773c41d4a745a5dc3 https://doi.org/10.21037/cdt.2016.04.02 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....85ef897f77a1adb773c41d4a745a5dc3 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 22233660 22233652 |
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| DOI: | 10.21037/cdt.2016.04.02 |