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Updated: Aug 6, 2026
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Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
Published on: December 11, 2017
Changes of left ventricular contractility in alternating left bundle branch block
European Journal of Cardiology
|January 1, 1981
Summary
This case study reports intermittent left bundle branch block causing alternating heart contractility in a borderline heart. The findings suggest peripheral block location may reduce left ventricular contractility.
Area of Science:
- Cardiology
- Electrophysiology
- Cardiac Physiology
Background:
- Left bundle branch block (LBBB) can affect cardiac function.
- Understanding contractility changes in LBBB is crucial for patient management.
Observation:
- A case of intermittent, non-rate-dependent left bundle branch block is presented.
- Alternating contractility indices (dP/dt, dP/dt/P) were observed.
- The patient had a borderline normal heart function.
Findings:
- Reduced left ventricular contractility was noted during LBBB episodes.
- This reduction may differ from findings by other authors.
- A peripheral location of the left bundle branch block is hypothesized as the cause.
Implications:
- Peripheral LBBB may uniquely impact left ventricular contractility.
- Further research is needed to confirm the relationship between block location and contractility.
- This case highlights the complexity of LBBB in borderline cardiac conditions.
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