Ann Pediatr Card Close
 

Figure 2: The drawing shows the truncal root as viewed in its in short axis in our patients with common arterial trunk, sinusal origin of the pulmonary arterial segment, and a trisinusate valve. Despite a similar circumferential location of the pulmonary arterial segment, from 2 to 5 o'clock as shown in the blue color, the pulmonary outflow is obstructed only if it arises from the largest asymmetric left sinus, as shown in (a). The pulmonary outflow remains unobstructed, if the pulmonary arterial segment arises from a smaller asymmetric sinus (b), or if the valvar sinuses are symmetrical (c)

Figure 2: The drawing shows the truncal root as viewed in its in short axis in our patients with common arterial trunk, sinusal origin of the pulmonary arterial segment, and a trisinusate valve. Despite a similar circumferential location of the pulmonary arterial segment, from 2 to 5 o'clock as shown in the blue color, the pulmonary outflow is obstructed only if it arises from the largest asymmetric left sinus, as shown in (a). The pulmonary outflow remains unobstructed, if the pulmonary arterial segment arises from a smaller asymmetric sinus (b), or if the valvar sinuses are symmetrical (c)