Circulation Journal
Online ISSN : 1347-4820
Print ISSN : 1346-9843
ISSN-L : 1346-9843
Arrhythmia/Electrophysiology
Pericardial Fat Is Associated With the Risk of Ventricular Arrhythmia in Asian Patients
Weng-Chio TamYung-Kuo LinWing-Pong ChanJen-Hung HuangMing-Hsiung HsiehShih-Ann ChenYi-Jen Chen
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2016 年 80 巻 8 号 p. 1726-1733

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Background:Pericardial fat is correlated with the occurrence of atrial fibrillation or coronary atherosclerosis. However, the role of pericardial fat in ventricular arrhythmia remains unclear.

Methods and Results:Patients who had undergone dual-source computed tomography and 24-h Holter ECG were retrospectively enrolled. Quantification of the volume of pericardial fat surrounding the ventricles was analyzed using threshold attenuation of dual-source CT. The volume of pericardial fat was significantly different among those without ventricular premature beats (VPBs) in 24 h (n=28), those with occasional VPBs (n=54) and those with frequent VPBs (n=34) (12.5±6.1 cm3vs. 14±8.9 cm3vs. 29.9±17.3 cm3, P<0.001). In addition, the number of VPBs strongly correlated with the volume of total pericardial fat (R=0.501, P<0.001), right ventricular (RV) pericardial fat (R=0.539, P<0.001), and left ventricular pericardial fat (R=0.376, P<0.001). Multivariate logistic regression analysis showed that quartiles of RV localized pericardial fat significantly increased the risk of frequent VPBs (OR=3.2, P=0.047). Moreover, the number of VPBs in 24 h was significantly different among the patients with a fat volume within the 25th percentile, 25–75th percentile and 75th percentile.

Conclusions:Pericardial fat (especially RV pericardial fat) was associated with the frequency of VPBs, which suggests the arrhythmogenic potential of ventricular pericardial fat. (Circ J 2016; 80: 1726–1733)

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© 2016 THE JAPANESE CIRCULATION SOCIETY
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