| New risk factors for thromboembolic complications in atrial fibrillation |
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Cheon Yeong Cho, Dae Ho Jung, Jum Suk Ko, Nam Sik Yoon, Sang Rok Lee, Sang Yup Lim, Hyung Wook Park, Il Suk Sohn, Kye Hun Kim, Young Joon Hong, Weon Kim, Ju Han Kim, Young Keun Ahn, Myung Ho Jeong, Jeong Gwan Cho, Jong Chun Park, Jung Chaee Kang, Sei Jong Kim |
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고려대학교 의과대학 내과학교실 |
| 원저:심방세동 환자에서 혈전색전성 합병증의 새로운 위험인자 |
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조천영, Dae Ho Jung, Jum Suk Ko, Nam Sik Yoon, Sang Rok Lee, Sang Yup Lim, Hyung Wook Park, Il Suk Sohn, Kye Hun Kim, Young Joon Hong, Weon Kim, Ju Han Kim, Young Keun Ahn, Myung Ho Jeong, Jeong Gwan Cho, Jong Chun Park, Jung Chaee Kang, Sei Jong Kim |
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| Abstract |
Background : Atrial fibrillation (AF) is the most common cause of embolic cerebral infarction.
This study was performed to determine new risk factors and the mechanism underlying
thromboembolism (TE) in patients with AF.
Methods
: 192 patients (M:F=137:55, 61¡¾11 years) with AF were randomly selected and divided
into a TE (n=95) and non-TE group (n=97). Another 71 patients with AF (M:F=38:33, 55¡¾14) were
studied for endothelial function by measuring the level of von Willebrand factor (vWF; factor 8
related antigen), inflammation by WBC, ESR, and high sensitive CRP and coagulation system by
fibrinogen, fibrinogen degradation product and fibrin d-dimer; the results were compared with 25
patients with normal sinus rhythm.
Results
: The TE group was older than non-TE group. Hypertension (HTN), diabetes mellitus
(DM), hypercholesterolemia, smoking and fine AF (AF wave amplitude <1 mm) were more frequent
in the TE group. Mitral valvular disease, an ejection fraction <40% and dilated cardiomyopathy were
more frequent in the TE group and the left atrial (LA) dimension was greater in the TE group. The
use of anticoagulants, an angiotensin-II receptor blocker and statins were less frequently observed in
the TE group. The vWF-factor 8 related antigen was higher in patients with advanced age, LV
dysfunction, HTN, DM, mitral stenosis and positively correlated with age, LA dimension, LV
end-diastolic and end-systolic dimension, ejection fraction, NYHA class and AF duration. The
fibrinogen level was positively correlated with age, NYHA class, LA dimension and d-dimer with
NYHA class. Markers for inflammation or coagulation were not significantly different in the atrial
fibrillation and the sinus rhythm group.
Conclusions
: No use of an angiotensin-II receptor blocker or statin and fine AF may be new
risk factors for TE in patients with AF. The TE risk factors are thought to increase TE by
impairing endothelial function.(Korean J Med 71:371-380, 2006)
Key Words : Atrial fibrillation, Thromboembolism, Risk factors |
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