Left bundle branch block-induced cardiomyopathy: a diagnostic proposal for a poorly explored pathological entity
Giuseppe D Sanna1, Marco Merlo2, Eleonora Moccia1
1Clinical and Interventional Cardiology, Sassari University Hospital, Sassari, Italy.
International Journal of Cardiology
|June 13, 2019
Summary
Left bundle branch block (LBBB)-induced cardiomyopathy is often diagnosed late. Early detection through clinical, ECG, and imaging signs may improve prognosis and allow timely cardiac resynchronization therapy (CRT).
Area of Science:
- Cardiology
- Electrophysiology
Background:
- Left bundle branch block (LBBB)-induced cardiomyopathy is increasingly recognized but not formally classified.
- Current diagnosis is often post-hoc, based on response to cardiac resynchronization therapy (CRT).
Purpose of the Study:
- To describe the relationship between LBBB and left ventricular dysfunction.
- To provide a multiparametric approach for early detection of LBBB-induced cardiomyopathy.
Main Methods:
- Review of the complex relationship between LBBB and non-ischaemic left ventricular dysfunction.
- Proposal of a multiparametric approach using clinical, electrocardiographic, and imaging "red flags".
Main Results:
- Early detection of LBBB-induced cardiomyopathy could have significant clinical and therapeutic implications.
- Patients may benefit from early CRT, potentially leading to a better prognosis than in primary muscle cell disorders.
Conclusions:
- Early identification of LBBB-induced cardiomyopathy is crucial.
- A multiparametric approach can aid in the early detection of this condition, differentiating it from primary dilated cardiomyopathy.
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