Bidirectional ventricular tachycardia in a patient with acute myocardial infarction and aortic stenosis

Park, Yong Hyun; Kim, Jun

doi:10.1016/j.ijcard.2012.05.061

Cited by 6 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 Since then, to my knowledge, few cases have been reported in patients with acute infarction and ischemic cardiomyopathy. 3,6,7 The unique feature of BVT is the alternating QRS morphology and alternating frontal-plane QRS axis. Most cases show alternating QRS complexes in V 1 , both with atypical right bundle branch block morphology, that varies from 1 beat to the other.…”

Section: Discussionmentioning

confidence: 99%

Unusual Tachycardia After Cocaine Use

Kawji

2023

JAMA Intern Med

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Unusual Tachycardia After Cocaine Use

Kawji

2023

JAMA Intern Med

View full text Add to dashboard Cite

show abstract

“…Bidirectional ventricular tachycardia (BDVT) is a regular ventricular tachyarrhythmia (VT) with two different QRS morphologies alternating at a rate typically between 140 and 180 bpm 1. There are not many known related causes and the most common include digoxin toxicity, catecholaminergic polymorphic VT, myocarditis and myocardial infarction 2 3…”

Section: Descriptionmentioning

confidence: 99%

Bidirectional ventricular tachycardia due to hypokalaemia

Santos

Teixeira

Costa³

et al. 2018

BMJ Case Rep

View full text Add to dashboard Cite

“…Besides being seen in patients with digitalis toxicity, 1,2 BD-VT has also been reported in patients with genetic disorders such as catecholaminergic polymorphic VT (CPVT), 3 Andersen-Tawil syndrome, 4 and arrhythmogenic right ventricular cardiomyopathy. 5 Other causes linked to BD-VT are hypoka-lemia, 6 herbal aconite poisoning, 7 acute myocardial infarction, 8 myocarditis, 9 and caffeine poisoning. 10 Currently there are only a few reports of BD-VT demonstrated in special animal models.…”

Section: Introductionmentioning

confidence: 99%

Caffeine and dobutamine challenge induces bidirectional ventricular tachycardia in normal rats

Zhang

2020

Heart Rhythm O2

View full text Add to dashboard Cite

BACKGROUND Bidirectional ventricular tachycardia (BD-VT) is an intriguing arrhythmia, characterized by a beat-to-beat alternation of the QRS polarity on electrocardiogram. Currently there is no simple BD-VT animal model. OBJECTIVE We report a simple animal model of BD-VT induced by caffeine and dobutamine (C1D) challenge in normal rats in which the arrhythmia can be attenuated by dantrolene (a ryanodine receptor stabilizer) treatment, but not by the pacemaker channel blocker ivabradine treatment. METHODS Adult (4-5 months old) Sprague-Dawley rats (both sexes) were randomized into C1D (n 5 8, received caffeine 120 mg/kg intraperitoneally [IP] and dobutamine 60 mg/kg IP, sequentially) and control (n 5 8) groups. In addition, a group of 7 rats were pretreated with dantrolene (10 mg/kg, IP) 30 minutes before the C1D challenge and another group of 8 rats were pretreated with ivabradine (5 mg/kg, IP) 30 minutes before the C1D challenge. RESULTS C1D challenge induced spontaneous premature ventricular contractions (PVCs) in 7 of 8 rats and BD-VT (lasted 4.3 6 2.9 minutes, terminated spontaneously) in 6 of 8 (75%) rats. No ventricular arrhythmia was induced in the control group (P , .05 vs C1D group). Dantrolene treatment significantly decreased BD-VT (1 of 7 rats in the Dantrolene1C1D group vs 6 of 8 rats in C1D group, P , .05). Ivabradine treatment did not affect C1D-induced BD-VT (7 of 8 rats in the Ivabradine1C1D group vs 6 of 8 in the C1D group, P. .05). CONCLUSION Caffeine and dobutamine challenge induces BD-VT in a majority of normal rats. Stabilizing cardiac ryanodine receptors with dantrolene treatment can significantly decrease the occurrence of BD-VT, but pacemaker channel blocker ivabradine treatment does not have effect in this animal model.

show abstract

Bidirectional ventricular tachycardia in a patient with acute myocardial infarction and aortic stenosis

Cited by 6 publications

References 9 publications

Unusual Tachycardia After Cocaine Use

Unusual Tachycardia After Cocaine Use

Bidirectional ventricular tachycardia due to hypokalaemia

Caffeine and dobutamine challenge induces bidirectional ventricular tachycardia in normal rats

Contact Info

Product

Resources

About