PMC7492561_01
Cerebral tissue oxygenation declines and renal tissue oxygenation increases after ductus ligation to reach a normal somatic-cerebral difference, which is maintained 9 h before rSrO2 decreases significantly and somatic-cerebral difference is inverted (blood flow redistribution). Once Milrinone is started, rSrO2 recovers as well as somatic-cerebral difference. When monitoring finishes, renal and cerebral tissue oxygenation are normal and somatic-cerebral difference is preserved.
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F1
Echocardiographic and NIRS findings are shown in Table 1 and Figure 1.
PMC7492561_02
After ligation, cerebral and renal tissue oxygenation increase. Echocardiographic reassessment (which coincides with an inverted somatic-cerebral difference) reveals low LVCO. After Milrinone starts renal tissue oxygenation increases slowly. Somatic-cerebral difference is preserved when echocardiographic re-evaluation shows a normal LVCO.
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F2
At the end of recording, NIRS values trend toward normalization (Table 2 and Figure 2).