Abstract：
:To describe great-vessel dimensions in patients with D-loop transposition of the great arteries (TGA) who have undergone atrial switch operation (ATSO). Patients who have undergone arterial switch operation for TGA have a high incidence of dilation of the neoaortic root. The incidence and degree of great artery dilation in patients who have undergone ATSO for TGA has not previously been described. A retrospective database review identified patients with TGA and intact ventricular septum who underwent ATSO at <1 year of age with cardiac magnetic resonance (CMR) within the previous 5 years (n = 39). A control group of patients referred for CMR with normal findings was identified for comparison (n = 40). Measurements of the annulus, root, sinotubular junction, and great vessels were performed, and interobserver/intraobserver variability was assessed. Median age of subjects at ATSO was 3 months (range 1-12) with median age at CMR of 29 years (range 18-40). For aortic measurements, mean z scores (± SDs) for patients relative to body surface area (BSA)-adjusted normal controls were as follows: annulus 1.41 (0.80), root 2.04 (1.48), sinotubular junction 2.16 (1.26), and great vessel 1.86 (1.53). For pulmonary measurements, similar values were as follows: annulus 1.82 (1.42), root 3.25 (2.01), sinotubular junction 2.47 (1.79), and great vessel 3.96 (3.08). In all cases, the p value was <0.001, and no confidence interval included the value 0. Adult patients with TGA repaired with ATSO in infancy have a greater incidence of dilation of both great vessels, particularly the pulmonary artery. These results may indicate abnormalities in the vascular structure of both great arteries in TGA that may predispose to progressive arterial dilation.
journal_name
Pediatr Cardioljournal_title
Pediatric cardiologyauthors
Yurasek GK,Gauvreau K,Powell AJ,Geva T,Brown DWdoi
10.1007/s00246-013-0800-7subject
Has Abstractpub_date
2014-03-01 00:00:00pages
457-62issue
3eissn
0172-0643issn
1432-1971journal_volume
35pub_type
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