Right-Atrial Muscular Ridge as an Isthmus for Macro-Re-Entrant Atrial Tachycardia in Partial Atrial Standstill
Ken Yamazaki, Takahiko Kinjo, Masaomi Kimura, Yuji Ishida, Hirofumi Tomita · 2026
Read Right-Atrial Muscular Ridge as an Isthmus for Macro-Re-Entrant Atrial Tachycardia in Partial Atrial Standstill by Ken Yamazaki, Takahiko Kinjo, Masaomi Kimura, Yuji Ishida, Hirofumi Tomita (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/PMC13571346.txt.
Description
Ken Yamazaki and colleagues describe, in a 2026 case, a 54-year-old man whose racing heart circuit ran along a surviving muscular ridge inside a largely silent right atrium. He had partial atrial standstill, a rare condition where much of the upper heart chamber produces no electrical signal, together with complete heart block.
Detailed electrical mapping found broad silent zones but one preserved ridge, formed by two known bands, serving as the narrow bridge the re-entrant circuit needed. Burning that ridge, plus a standard second line, stopped the tachycardia, and a pacemaker followed for the block. He stayed free of the rhythm problem for seven years, showing how spared anatomy can both cause and cure arrhythmia.
Catalog record
| CREATOR | Ken Yamazaki, Takahiko Kinjo, Masaomi Kimura, Yuji Ishida, Hirofumi Tomita |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 18682 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |