Preexisting XXXX Underlies Newly Diagnosed @entity955 After Acute @entity385 .

@entity1 @entity64 @entity955 @entity299 @entity385
BACKGROUND AND PURPOSE: Whether newly diagnosed @entity955 (nAF) after @entity64 reflects underlying @entity299 and represents an increased risk of @entity64 , or whether it is triggered by neurogenic mechanisms remains uncertain. We investigated, whether cardiovascular risk factors and echocardiographic parameters in @entity1 with nAF are similar to @entity1 with known AF (kAF) and differ from @entity1 without AF. METHODS: Consecutive acute @entity385 @entity1 were enrolled into a prospective @entity64 database. All @entity1 with echocardiography were included and univariable and multivariable testing was applied to compare clinical characteristics and echocardiographic findings among @entity1 with nAF, kAF, and no AF. RESULTS: A total of 1397 @entity1 were included (male, 62.3%; median age, 71 years). AF was present in 320 (22.9%) @entity1 . Of those, nAF was present in 36.2% (116/320) and kAF in 63.8% (204/320). No clinical or echocardiographic factor was independently associated with detection of nAF compared with kAF but a trend toward larger left atrial diameters in @entity1 with kAF was observed (P=0.070). In contrast, @entity1 with nAF were more often female (P<0.001), older (P<0.001) and had a larger left atrial diameters (P<0.001) compared with @entity1 without AF. While @entity64 severity in @entity1 with nAF and kAF was similar, @entity1 without AF had less severe @entity64 . CONCLUSIONS: @entity64 @entity1 with nAF and with kAF share common cardiovascular risk factors, have similar echocardiographic findings and suffer equally severe @entity64 . We conclude that preexisting @entity299 is the major cause of AF that is first diagnosed after @entity64 .
