Key result
Speckle-tracking echo reveals depressed septal strain suggesting focal myocardial insult at the distal right bundle.
Why the study?
The etiology of isolated complete right bundle branch block is poorly studied and its prognosis remains debatable.
Does speckle-tracking echocardiography identify focal myocardial insults in patients with isolated complete right bundle branch block?
Case Report (n=1)
Does speckle-tracking echocardiography identify focal myocardial insults in patients with isolated complete right bundle branch block?
Speckle-tracking echocardiography may help identify focal myocardial insults corresponding to the right bundle of His in patients with isolated complete right bundle branch block.
May not alter RBBB evaluation yet; hypothesis-generating for speckle-tracking in conduction disorders.
Objective: Isolated complete right bundle branch block (CRBBB) is a known ECG finding in apparently healthy adults.However, the etiology of CRBBB is studied poorly and its prognosis still debatable.We aimed to demonstrate speckle-tracking imaging findings in a patient with CRBBB.Case presentation: An apparently healthy lady was found to have a CRBBB on an incidental ECG.Routine echocardiography showed normal cardiac anatomy and function.Speckle-tracking echocardiography depicted preserved global strain of the left ventricle with depressed peak systolic strain of septal apical and mid-septal segments.We present a focal myocardial insult in the area corresponding to the anatomy the right bundle of His.Such correlation may explain the CRBBB present in the otherwise healthy patient.Conclusion: Speckle-tracking echocardiography in complete right bundle branch block may help to identify the etiology of this conduction disturbance and assist in making the prognosis.
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Petrov et al. (2026) conducted a case report in Isolated complete right bundle branch block (n=1). Speckle-tracking echocardiography was evaluated on Myocardial strain patterns. Speckle-tracking echocardiography identified depressed peak systolic strain in the septal apical and mid-septal segments, suggesting a focal myocardial insult corresponding to the distal right bundle of His.
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