Case Report: Wide-to-Narrow QRS Tachycardia in a 3-Month-Old Infant

Liang Zhao; Liang Zhao; Liang Zhao; Liang Zhao; Song Yan; Song Yan; Song Yan; Song Yan; Tao Wang; Tao Wang; Tao Wang; Tao Wang; Yimin Hua; Yimin Hua; Yimin Hua; Yimin Hua; Kaiyu Zhou; Kaiyu Zhou; Kaiyu Zhou; Kaiyu Zhou

doi:10.3389/fcvm.2021.722376

Frontiers in Cardiovascular Medicine (Aug 2021)

Case Report: Wide-to-Narrow QRS Tachycardia in a 3-Month-Old Infant

Liang Zhao,
Liang Zhao,
Liang Zhao,
Liang Zhao,
Song Yan,
Song Yan,
Song Yan,
Song Yan,
Tao Wang,
Tao Wang,
Tao Wang,
Tao Wang,
Yimin Hua,
Yimin Hua,
Yimin Hua,
Yimin Hua,
Kaiyu Zhou,
Kaiyu Zhou,
Kaiyu Zhou,
Kaiyu Zhou

Affiliations

Liang Zhao: Department of Paediatric Cardiology, West China Second University Hospital, Sichuan University, Chengdu, China
Liang Zhao: The Cardiac Development and Early Intervention Unit, West China Institute of Women and Children's Health, West China Second University Hospital, Sichuan University, Chengdu, China
Liang Zhao: Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
Liang Zhao: Key Laboratory of Development and Diseases of Women and Children of Sichuan Province, West China Second University Hospital, Sichuan University, Chengdu, China
Song Yan: Department of Paediatric Cardiology, West China Second University Hospital, Sichuan University, Chengdu, China
Song Yan: The Cardiac Development and Early Intervention Unit, West China Institute of Women and Children's Health, West China Second University Hospital, Sichuan University, Chengdu, China
Song Yan: Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
Song Yan: Key Laboratory of Development and Diseases of Women and Children of Sichuan Province, West China Second University Hospital, Sichuan University, Chengdu, China
Tao Wang: Department of Paediatric Cardiology, West China Second University Hospital, Sichuan University, Chengdu, China
Tao Wang: The Cardiac Development and Early Intervention Unit, West China Institute of Women and Children's Health, West China Second University Hospital, Sichuan University, Chengdu, China
Tao Wang: Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
Tao Wang: Key Laboratory of Development and Diseases of Women and Children of Sichuan Province, West China Second University Hospital, Sichuan University, Chengdu, China
Yimin Hua: Department of Paediatric Cardiology, West China Second University Hospital, Sichuan University, Chengdu, China
Yimin Hua: The Cardiac Development and Early Intervention Unit, West China Institute of Women and Children's Health, West China Second University Hospital, Sichuan University, Chengdu, China
Yimin Hua: Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
Yimin Hua: Key Laboratory of Development and Diseases of Women and Children of Sichuan Province, West China Second University Hospital, Sichuan University, Chengdu, China
Kaiyu Zhou: Department of Paediatric Cardiology, West China Second University Hospital, Sichuan University, Chengdu, China
Kaiyu Zhou: The Cardiac Development and Early Intervention Unit, West China Institute of Women and Children's Health, West China Second University Hospital, Sichuan University, Chengdu, China
Kaiyu Zhou: Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
Kaiyu Zhou: Key Laboratory of Development and Diseases of Women and Children of Sichuan Province, West China Second University Hospital, Sichuan University, Chengdu, China

DOI: https://doi.org/10.3389/fcvm.2021.722376
Journal volume & issue: Vol. 8

Abstract

Read online

Introduction: It is rare to find that wide QRS tachycardia automatically changes to narrow QRS tachycardia, and it is more difficult to clarify the mechanism.Case Report: A 3-month-old infant with recurrent paroxysmal supraventricular tachycardia underwent transesophageal cardiac electrophysiological examination. The wide QRS tachycardia was induced by atrial RS2 stimulation, and it soon changed to narrow QRS tachycardia automatically. By the accurate measurement of esophageal lead, it was found that the electrocardiogram changes completely conform to Coumel law. The mechanism of wide and narrow QRS tachycardia was orthodromic atrioventricular reentrant tachycardia with or without ipsilateral functional bundle branch block, and the accessory pathway was defined as the left free wall-concealed accessory pathway.Conclusion: Transesophageal cardiac electrophysiological examination can reveal some special electrophysiological phenomena, and its non-invasive nature is especially suitable for infants.

Published in Frontiers in Cardiovascular Medicine

ISSN: 2297-055X (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Medicine: Internal medicine: Specialties of internal medicine: Diseases of the circulatory (Cardiovascular) system
Website: https://www.frontiersin.org/journals/cardiovascular-medicine

About the journal

Abstract

Keywords