J waves induced during coronary angiography in patients with vasospastic angina and its implication.
Conduction delay
Contrast medium
Coronary angiography
J waves
Myocardial ischemia
Journal
Journal of electrocardiology
ISSN: 1532-8430
Titre abrégé: J Electrocardiol
Pays: United States
ID NLM: 0153605
Informations de publication
Date de publication:
Historique:
received:
06
11
2020
revised:
08
12
2020
accepted:
22
12
2020
pubmed:
10
1
2021
medline:
22
6
2021
entrez:
9
1
2021
Statut:
ppublish
Résumé
J waves may develop during coronary angiography (CAG). Seven patients (61±6 years, 6 male) had vasospastic angina. ST-segment elevation and ventricular fibrillation were documented in all patients. CAG revealed normal arteries, but slurring or notching (J waves) with an amplitude of 0.20±0.06 mV appeared for the first time (n=6) or in an augmented manner (n=1) with distinct alterations in QRS morphology when contrast medium was injected into the right coronary artery. In patients with vasospastic angina, J waves observed during CAG can be a manifestation of a local conduction delay caused by contrast medium-induced myocardial ischemia.
Sections du résumé
BACKGROUND
J waves may develop during coronary angiography (CAG).
PATIENTS AND RESULTS
Seven patients (61±6 years, 6 male) had vasospastic angina. ST-segment elevation and ventricular fibrillation were documented in all patients. CAG revealed normal arteries, but slurring or notching (J waves) with an amplitude of 0.20±0.06 mV appeared for the first time (n=6) or in an augmented manner (n=1) with distinct alterations in QRS morphology when contrast medium was injected into the right coronary artery.
CONCLUSION
In patients with vasospastic angina, J waves observed during CAG can be a manifestation of a local conduction delay caused by contrast medium-induced myocardial ischemia.
Identifiants
pubmed: 33421661
pii: S0022-0736(20)30622-1
doi: 10.1016/j.jelectrocard.2020.12.009
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
99-101Commentaires et corrections
Type : CommentIn
Informations de copyright
Copyright © 2020 Elsevier Inc. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of Competing Interest None.