Screening for Cardiac Magnetic Resonance Scar Features by 12-Lead ECG, in XXXX with Preserved Ejection Fraction.

@entity1 @entity20576 @entity296 @entity63 @entity2287 @entity65 @entity1002
BACKGROUND: Increased QRS score and wide spatial QRS- @entity20576 are independent predictors of @entity65 in the general population. Our main objective was to assess whether a QRS score >= 5 and/or QRS- @entity20576 >= 105   enable screening of @entity1 for @entity296 features. METHODS: Seventy-seven @entity1 age  <=70 years with QRS score >= 5 AND/OR spatial QRS- @entity20576 >= 105   as well as @entity1002 ( @entity1002 ) >35% were enrolled in the study. All @entity1 underwent complete clinical examination, signal averaged ECG (SAECG), 30-minute ambulatory electrocardiogram recording for T-wave alternans (TWA), and late @entity2287 enhancement cardiac magnetic resonance (LGE-CMR). Relationship between QRS score, QRS- @entity20576 with scar presence and pattern, as well as gray zone, core, and total scar size by LGE-CMR were assessed. RESULTS: @entity296 was present in 41 (53%) @entity1 , of whom 19 (46%) exhibited a typical @entity63 pattern. QRS score but not QRS- @entity20576 was related to total scar size and gray zone size (R(2) = 0.12, P = 0.002; R(2) = 0.17; P  <= 0.0001, respectively). @entity1 with QRS scores >= 6 had significantly greater @entity296 and gray zone size, increased QRS duration and QRS- @entity20576 , a higher prevalence of late potentials presence, increased LV end-diastolic volume and decreased @entity1002 . There was a significant independent and positive association between TWA value and total scar (P = 0.001) and gray zone size (P = 0.01). CONCLUSION: @entity1 with preserved @entity1002 and @entity296 by CMR also have electrocardiographic features that could be involved in ventricular arrhythmogenesis.
