Key result
Non-Hodgkin lymphoma presents with alternating right and left bundle-branch block on ECG.
Case Report (n=1)
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Prompts vigilance for AV block progression in lymphoma; leaves open links to therapy or prognosis.
ECG CHALLENGEA 37-year-old woman with non-Hodgkin lymphoma undergoing chemotherapy and no other significant medical history was incidentally noted to have an irregular heart rhythm on physical examination, and a 12-lead ECG was obtained.ECG (Figure 1) showed sinus rhythm with alternating pattern of right bundle-branch block (RBBB) and left bundle-branch block (LBBB).What is the mechanism of the alternating bundle-branch block pattern noted on the ECG? 1. Alternating RBBB and LBBB premature ventricular contractions 2. Alternating phase 3 block in the bundle branches 3. Alternating phase 4 block in the bundle branches 4. Interpolated premature ventricular contractions with alternating bundlebranch morphologiesPlease turn the page to read the diagnosis.
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Saini et al. (2018) conducted a case report in Alternating bundle-branch block (n=1). ECG evaluation was evaluated. A 12-lead ECG in a 37-year-old woman with non-Hodgkin lymphoma demonstrated sinus rhythm with an alternating pattern of right bundle-branch block and left bundle-branch block.
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