Junichi Ozawa1, Takaaki Watanabe1, Masato Ito1, Fuyu Miyake1, Nobuhiko Nagano1, Ryo Ogawa1, Shun Matsumura1, Ryuichiro Araki2, Masanori Tamura3, Fumihiko Namba4. 1. Department of Pediatrics, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama 350-8550, Japan. 2. Community Health Science Center, Saitama Medical University, 38 Morohongo, Moroyama, Iruma, Saitama 350-0495, Japan. Electronic address: raraki@saitama-med.ac.jp. 3. Department of Pediatrics, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama 350-8550, Japan. Electronic address: mstamura@saitama-med.ac.jp. 4. Department of Pediatrics, Saitama Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe, Saitama 350-8550, Japan. Electronic address: nambaf@saitama-med.ac.jp.
Abstract
BACKGROUND: The arterial oxygen saturation of infants requiring resuscitation can be monitored using a pulse oximeter. However, the device cannot provide information about cerebral oxygenation. Thus, we used a new portable near-infrared spectroscopy (NIRS) device that can monitor regional cerebral tissue oxygen saturation (crSO2) with a probe attached to the examiner's finger. AIM: To identify the reference ranges for crSO2 within the first 10 min after birth in term infants who did not receive any medical intervention in the delivery room. RESULTS: crSO2 in the left frontoparietal area of the forebrain was measured within the first 10 min of life in 127 healthy term infants. The median gestational age and birth weight were 37.6 weeks and 2742 g, respectively, and 85% of the infants were delivered via a scheduled cesarean section. The 3rd-97th percentile values for crSO2 ranged from 33.1% to 56.7% at 1 min, from 33.2% to 59.5% at 2 min, and from 38.7% to 66.6% at 5 min after birth. A median of 3.5 min was required to achieve a crSO2 > 50%. CONCLUSIONS: This study showed the reference ranges for crSO2 measured with the new portable NIRS device within the first 10 min after birth in term infants.
BACKGROUND: The arterial oxygen saturation of infants requiring resuscitation can be monitored using a pulse oximeter. However, the device cannot provide information about cerebral oxygenation. Thus, we used a new portable near-infrared spectroscopy (NIRS) device that can monitor regional cerebral tissue oxygen saturation (crSO2) with a probe attached to the examiner's finger. AIM: To identify the reference ranges for crSO2 within the first 10 min after birth in term infants who did not receive any medical intervention in the delivery room. RESULTS:crSO2 in the left frontoparietal area of the forebrain was measured within the first 10 min of life in 127 healthy term infants. The median gestational age and birth weight were 37.6 weeks and 2742 g, respectively, and 85% of the infants were delivered via a scheduled cesarean section. The 3rd-97th percentile values for crSO2 ranged from 33.1% to 56.7% at 1 min, from 33.2% to 59.5% at 2 min, and from 38.7% to 66.6% at 5 min after birth. A median of 3.5 min was required to achieve a crSO2 > 50%. CONCLUSIONS: This study showed the reference ranges for crSO2 measured with the new portable NIRS device within the first 10 min after birth in term infants.
Authors: Ena Suppan; Gerhard Pichler; Corinna Binder-Heschl; Bernhard Schwaberger; Berndt Urlesberger Journal: Front Pediatr Date: 2022-06-13 Impact factor: 3.569