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Meeting on May 15th, 2025

Newborn with Pulmonary Atresia with Intact Ventricular Septum (PAIVS). NIRS was applied at the CSat and Rsat (somatic renal) level. The monitoring indicates a progressive decline of the renal saturation in the post-natal life. This corresponded to ongoing left to right shunting at the level of the ductus arteriosus and holodiastolic retrograde flow in the descending abdominal aorta. The image on the right indicates a newborn (control). The Rsat signal and Csat signal are of higher values. The Rsat signal progressively increases to be overlapping (if not above) the Csat signal, as the ductus arteriosus closes in the immediate post-natal life. 

The tables indicate that the PAIVS newborn had Rsat values <50 for 625 minutes during the period of the monitoring. The control newborn had only 1 minute below the <50% threshold.