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Ventricular arrhythmias in Takayasu arteritis
G Siburian1, Y Hashimoto, F Numano
1Third Department of Internal Medicine, Tokyo Medical and Dental University, School of Medicine, Japan.
International Journal of Cardiology
|July 15, 1993
Summary
Frequent ventricular arrhythmias in Takayasu arteritis patients are linked to left ventricular hypertrophy and aortic regurgitation. This study highlights key clinical indicators for managing this condition.
Area of Science:
- Cardiology
- Rheumatology
- Genetics
Background:
- Takayasu arteritis is a rare inflammatory condition affecting large arteries.
- Ventricular arrhythmias can be a complication, but their clinical significance is not fully understood.
- Understanding arrhythmia prevalence and associated factors is crucial for patient management.
Purpose of the Study:
- To investigate the prevalence, severity, and clinical significance of ventricular arrhythmias in female patients with Takayasu arteritis.
- To identify clinical and echocardiographic factors associated with frequent or complex ventricular arrhythmias.
Main Methods:
- A cohort of 78 female patients with Takayasu arteritis underwent 24-h ambulatory electrocardiography monitoring.
- Patients were categorized into two groups based on premature ventricular contraction frequency.
- Echocardiography, HLA Bw52 typing, and thallium-201 stress myocardial scintigraphy were performed and compared between groups.
Main Results:
- 36% of patients exhibited frequent or complex premature ventricular contractions.
- Patients with frequent/complex arrhythmias showed significantly higher left ventricular mass (P < 0.01).
- Complicated aortic regurgitation (P < 0.01) and abnormal thallium-201 findings (P < 0.05) were more prevalent in the arrhythmia group.
Conclusions:
- Frequent or complex ventricular arrhythmias in Takayasu arteritis are associated with left ventricular hypertrophy.
- These arrhythmias correlate with the presence of aortic regurgitation and decreased coronary reserve.
- These findings suggest ventricular arrhythmias are a significant clinical marker in Takayasu arteritis.