Epinephrine-Induced Polymorphic Ventricular Tachycardia in a Patient With Congenital Long QT Syndrome
Korean Circulation Journal
;
: 386-388, 2009.
Article
in English
| WPRIM
| ID: wpr-151431
ABSTRACT
A 24-year-old woman presented to the department of plastic surgery for surgical excision of a nevus on her nose. Although her history failed to reveal any cardiac disease, her pre-operative electrocardiogram (ECG) showed an extremely prolonged QT interval of up to 528 msec. Repeated history-taking after admission revealed three syncopal episodes associated with both physical and emotional stress, and because the two-dimensional echocardiography and exercise ECG test were normal except for the prolonged QT interval, an epinephrine test was done to assess QT interval changes after an epinephrine infusion. Immediately after a bolus injection of epinephrine (0.1 microgram/kg), marked prolongation of the QT interval developed, followed by polymorphic ventricular tachycardia which was immediately terminated with direct current shock, resulting in the diagnosis of a long QT syndrome (LQTS), probably type 1. Gene studies were recommended, but declined by the patient and her family. She was instructed to avoid competitive sports, and a beta-blocker was prescribed after which she remained symptom-free.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Shock
/
Sports
/
Stress, Psychological
/
Surgery, Plastic
/
Syncope
/
Long QT Syndrome
/
Echocardiography
/
Epinephrine
/
Nose
/
Tachycardia, Ventricular
Limits:
Female
/
Humans
Language:
English
Journal:
Korean Circulation Journal
Year:
2009
Type:
Article
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