Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2022 Dec 7;9:1052465. doi: 10.3389/fcvm.2022.1052465

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2022 Chen, Wang, Wang, Liu, Li, Yang, Hu, Wu, Li and Zhou.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

PMC Copyright notice

Representative intracardiac electrocardiogram from a patient with right-sided MAP and a patient with left-sided MAP. (A) Atrial programmed atrial stimulation (S1S1) induced a pre-excitation of QRS complex with LBBB pattern. It presents antegrade long conduction with lengthening of the A-H interval and A-V interval, a contemporary shortening of the H-V interval. (B) Atrial programmed stimulation (S1S1) induced tachycardiac with a broad QRS complex. The tachycardia has an RBBB pattern, long AV interval, and short VA interval. The earliest atrial activation was detected at the His-bundle electrodes during the tachycardia.