Abstract
AimTo compare regional tissue oxygenation (rSO2) in the brain, intestine, and kidney between newborns with and without congenital heart defects (CHD).MethodsThis observational case-control study was conducted at the Neonatal Deparetment of Children's Hospital Ljubljana between December 2012 and April 2014. It included 35 newborns with CHD and 30 healthy age- and sex-matched controls. CHD were assessed echocardiographically and divided into acyanotic and cyanotic group. RSO2 in the brain, intestine, and kidney was measured using near-infrared spectroscopy (NIRS). Simultaneously, heart rate (HR), breathing frequency (BF), mean arterial blood pressure (MAP), and arterial oxygen saturation (Sao2) were recorded.ResultsNewborns with CHD had significantly lower rSO2 in the left brain hemisphere (67 ± 11% vs 76 ± 8%, P = 0.004), right brain hemisphere (68 ± 11% vs 77 ± 8%, P < 0.001), and the kidney (68 ± 13% vs 77 ± 10%, P = 0.015). RSO2 in the intestine did not significantly differ between the groups. HR, MAP, and Sao2 also did not differ between the groups, whereas BF was significantly higher in the CHD group (57 ± 12 vs 39 ± 10 breaths/min, P < 0.001). Between cyanotic and acyanotic group, we found no significant differences in rSO2 of any tissue.ConclusionsMonitoring tissue oxygenation by NIRS could enable a timely detection of hemodynamically important CHD.
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