Pseudo 2:1 AV Block From Acquired Long QT Syndrome From Eating Clay

Kabo Mojela, MBChB, MMed; Philasande Mkoko, MBChB, MMed, MPhil; Cert Cardio, ECES

JACC: Case Reports (Oct 2023)

Pseudo 2:1 AV Block From Acquired Long QT Syndrome From Eating Clay

Kabo Mojela, MBChB, MMed,
Philasande Mkoko, MBChB, MMed, MPhil,
Cert Cardio, ECES

Affiliations

Kabo Mojela, MBChB, MMed: Cardiac Clinic, Charlotte Maxeke Johannesburg Academic Hospital, Pacing and Electrophysiology Laboratory, Division of Cardiology, Department of Internal Medicine, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
Philasande Mkoko, MBChB, MMed, MPhil: Address for correspondence: Dr Philasande Mkoko, Charlotte Maxeke Johannesburg Academic Hospital, Blue Block, Area 566, Pacing and Electrophysiology Laboratory, Division of Cardiology, Department of Internal Medicine, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa.; Cardiac Clinic, Charlotte Maxeke Johannesburg Academic Hospital, Pacing and Electrophysiology Laboratory, Division of Cardiology, Department of Internal Medicine, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
Cert Cardio, ECES: Cardiac Clinic, Charlotte Maxeke Johannesburg Academic Hospital, Pacing and Electrophysiology Laboratory, Division of Cardiology, Department of Internal Medicine, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa

Journal volume & issue: Vol. 23
p. 102018

Abstract

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Age-related degeneration of the cardiac conduction system is an important cause of heart block and a leading indication for permanent pacemaker implantations. However, variations in the myocardial refractory periods from QT interval prolongation or concealed atrioventricular node penetration from premature ventricular complexes can lead to unusual forms of conduction block not requiring permanent pacemaker implantation. (Level of Difficulty: Advanced.)

Published in JACC: Case Reports

ISSN: 2666-0849 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Medicine: Internal medicine: Specialties of internal medicine: Diseases of the circulatory (Cardiovascular) system
Website: https://www.journals.elsevier.com/jacc-case-reports

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