Key result
Dextro-transposition of the great arteries late after Senning- and Mustard-procedures is accompanied by mitral annulus dilation and functional impairment compared to healthy controls.
Why the study?
The study aimed to evaluate mitral annulus abnormalities and potential differences in dimensions and functional properties late after Senning- and Mustard-procedures using 3DSTE.
Are mitral annulus dimensions and function altered in patients with dextro-transposition of the great arteries late after atrial switch operations compared to healthy controls?
Cohort (n=44)
Are mitral annulus dimensions and function altered in patients with dextro-transposition of the great arteries late after atrial switch operations compared to healthy controls?
Patients with dextro-transposition of the great arteries exhibit mitral annulus dilation and functional impairment late after atrial switch operations compared to healthy controls.
May support mitral annular evaluation in dTGA surveillance; hypothesis-generating for prognostic implications.
Background: Dextro-transposition of the great arteries (dTGA) is a rare condition comprising 5-7% of all congenital heart diseases (CHD). Until 1990s, atrial switch operations were the method of choice for the treatment of dTGA. The aim of our present study was to evaluate the abnormalities of the mitral annulus (MA) by three-dimensional speckle-tracking echocardiography (3DSTE). Potential differences in MA dimensions and functional properties late after Senning- and Mustard-procedures were analyzed as well. Methods: This retrospective cohort study comprised 19 dTGA patients late after atrial switch operation, from which 7 subjects were not involved due to inferior image quality. The remaining dTGA patient group comprised 12 subjects (age: 30.7±8.6 years, 7 males). For comparisons, 32 age- and gender-matched healthy controls were evaluated (age: 34.4±12.3 years, 18 males). Results: End-systolic and end-diastolic MA diameter (MAD), area and perimeter proved to be increased, while MA functional parameters [MA fractional area change (MAFAC) and fractional shortening (MAFS)] were reduced in all dTGA patients as compared to matched controls regardless of the atrial switch procedure used. However, MA morphological parameters were tendentiously lower, while MA functional parameters were tendentiously favorable in case of Senning-procedure compared to Mustard-procedure. Conclusions: dTGA is accompanied by MA dilation and its functional impairment late after Senning- and Mustard-procedures.
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Nemes et al. (2022) conducted a cohort in Dextro-transposition of the great arteries (dTGA) (n=44). Dextro-transposition of the great arteries late after atrial switch operations vs. Healthy controls was evaluated on Mitral annulus dimensions and functional properties (diameter, area, perimeter, fractional area change, and fractional shortening). Dextro-transposition of the great arteries late after Senning- and Mustard-procedures is accompanied by mitral annulus dilation and functional impairment compared to healthy controls.
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