Fig. 4From: Early single-stage surgical revascularization of pulmonary artery in unilateral absence of a pulmonary arteryThe effect of revascularization for the abnormal pulmonary artery. The Z-value of the affected PA significantly increased from − 3.66 ± 1.86 before surgery to − 2.34 ± 1.18 at latest follow-upBack to article page