DHF patients with and without arrhythmic events had significant differences (p<0.05) regarding the thready pulse (P=0.008), cooled or mottled extremity (P=0.034), hepatomegaly (P=0.004), ascites (P=0.034), anasarca (p<0.001), past drug history of insulin (P=0.040), ß-blocking agent therapy in hospital course (P=0.042), heartbeat (P=0.006), QRS duration (P=0.013), QTc interval (p<0.001), QTd (p<0.001), EF (P=0.004), prothrombin time (P=0.034), and uric acid (P=0.002) in analysis. Here, F2 is linked to Dengue hemorrhagic fever.