Backscatter evaluation of myocardial functional and textural findings in XXXX with right ventricular pressure and/or @entity1284 .

@entity1 @entity296 @entity338 @entity15929 @entity118 @entity850 @entity1284
@entity15929 ( @entity15929 ) analysis represents a recent echocardiographic technique for evaluating the textural and functional state of the right ventricular (RV) myocardium. We undertook our study to (1) define the potential impact of age or morphometric parameters (height, weight, and body surface area) on RV @entity15929 indexes, and (2) compare RV @entity15929 data among normal subjects and @entity1 with different conditions of RV overload. We studied 34 @entity1 (mean age 14.6 +/- 4.7 years) divided into 3 groups: 14 @entity1 with RV @entity1284 related to moderate to large @entity118 (group I); (2) 10 @entity1 with RV pressure overload due to transposition of the great arteries after the Mustard procedure (group II); and (3) 10 @entity1 with RV volume and pressure overload due to @entity338 and @entity850 after corrective surgery for tetralogy of Fallot (group III). In addition, 20 @entity1 with structurally normal hearts were enrolled as the control group. The 4 groups were comparable with regard to age and morphometric parameters. @entity15929 parameters were assessed as the magnitude of cyclic variation, determined as the difference between peak and nadir @entity15929 values and the averaged @entity296 intensity. In the control group and group I, @entity15929 parameters did not change significantly with age, height, weight, and body surface area. In contrast, in groups II and III, a significant correlation was found between cyclic variation and age at the study (p = 0.021, r = -0.71, and p = 0.006, r = -0.79, respectively). Furthermore, compared with the control group, cyclic variation and @entity15929 intensity were significantly different only in groups II (p = 0.01 and p = 0.006, respectively) and III (both p <0.0001) but not in group I (p = 0.23 and p = 0.38, respectively). The lowest values of cyclic variation and the highest values of intensity were detected in group III @entity1 . Thus, our data suggest that (1) in normal subjects, there is no correlation between RV @entity15929 indexes and age or any morphometric parameters, and (2) @entity15929 analysis is able to noninvasively detect differences in myocardial functional and textural properties in the presence of different conditions of RV overload.
