Is Transposition of the Great Arteries Associated With Shortening of the Intrapericardial Portions of the Great Arterial Trunks? An Echocardiographic Analysis on Newborn Infants With Simple Transposition of the Great Arteries to Explore an Animal Model-Based Hypothesis on Human Beings.

To test this idea, we looked at whether there might be significant differences in the mean length between the shorter vessel walls of the pulmonary trunk of normal patients (PTL‐2=1.12±0.09 cm) and patients with TGA (PTL‐1=1.19±0.13 cm), and between the longer vessel walls of the pulmonary trunk of normal patients (PTL‐1=1.37±0.12 cm) and patients with TGA (PTL‐2=1.36±0.12 cm) (Table 3 ).

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