Left Bundle Branch Block Tachycardia: A Nightmare Confluence of Tachycardia and Bradycardia
Sudipta Mondal, Nadeem Afroz Muslim, Tapan Kr Matia, Debargha Dhua · 2026
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Description
Sudipta Mondal and colleagues report a 2026 case of a frail patient in their nineties with a nonstop wide-complex fast heart rhythm showing a left bundle branch block pattern. Adenosine stopped the rhythm only briefly, and electric shocks failed because it restarted at once.
Recordings from inside the heart narrowed down how the rhythm was driven and, after it stopped, revealed alternating bundle conduction during slow rhythm. The measured H-V interval of 306 ms ranks among the longest ever reported and points to a badly diseased conduction system below the His bundle. The patient received a pacemaker plus beta blockers and amiodarone. The authors stress how very slow conduction can still persist in such damaged tissue.
Catalog record
| CREATOR | Sudipta Mondal, Nadeem Afroz Muslim, Tapan Kr Matia, Debargha Dhua |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 9373 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |