| Clinical characteristics and prognosis of Korean patients with ventricular tachycardia |
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Jin Bae Kim, Boyoung Joung, Jong Youn Kim, Dae Huyk Kim, Shinki Ahn, Moon Hyoung Lee, Sung Soon Kim |
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고려대학교 의과대학 내과학교실 |
| 원저:심실 빈맥의 임상양상 및 예후 |
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김진배, Boyoung Joung, Jong Youn Kim, Dae Huyk Kim, Shinki Ahn, Moon Hyoung Lee, Sung Soon Kim |
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| Abstract |
Background : Although the determination of etiology is crucial for the management of ventricular
tachycardia (VT), there have been few studies on the epidemiology and clinical characteristics of
patients with ventricular tachycardia in Korea. Previous studies on Western populations have shown
that ischemic VT is the most common type arrhythmia; however, the incidence of ischemic heart
disease in Korea is lower than in Western culture. The purpose of this study was to determine the
clinical characteristics and prognosis of Korean patients with VT.
Methods
: From January 1999 to December 2002 patients who were diagnosed with VT by ECG
or confirmed by electrophysiological studies were enrolled. Hospital records were reviewed for the
clinical characteristics which included: demographic features, underlying disease, clinical presentation,
ECG features and prognosis in 136 patients who visited our emergency room or out patient clinic.
Results
: There were 100 men and 36 women (mean age 51.517.6). The most common presenting
symptom was palpitation (56.6%), which was followed by chest pain and syncope. The most common
type of VT was idiopathic VT (54.4%); ischemic VT was found in 29 cases (21.3%) and dilated or
hypertrophic cardiomyopathy in 16 cases (11.8%). For all types of VT, the idiopathic VT showed the
best prognosis and cardiac function (p<0.05). RFCA (Radiofrequency catheter ablation) was the best
treatment option for treatment of idiopathic VT (p<0.05).
Conclusions
: These findings suggest that idiopathic VT may be the most common type of VT
in Korean patients; it usually originates form either the right ventricular outflow tract (RVOT) or the
LV. The response to treatment and prognosis was poor in VT patients who had underlying heart
disease; however, the prognosis was excellent for those with idiopathic VT.(Korean J Med
71:276-284, 2006)
Key Words : Ventricular tachycardia, Clinical characteristics, Prognosis |
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