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Journal of Perinatology (2010) 30, 265–269 r 2010 Nature Publishing Group All rights reserved. 0743-8346/10 $32 www.nature.com/jp
ORIGINAL ARTICLE
The perfusion index derived from a pulse oximeter for predicting low superior vena cava flow in very low birth weight infants S Takahashi, S Kakiuchi, Y Nanba, K Tsukamoto, T Nakamura and Y Ito Division of Neonatology, Department of Maternal and Perinatal Medicine, National Center for Child Health and Development, Tokyo, Japan
Objective: Superior vena cava (SVC) flow is used as an index for evaluating systemic blood flow in neonates. Thus far, several reports have shown that low SVC flow is a risk factor for intraventricular hemorrhage (IVH) in the preterm infant. Therefore, it is likely to be a useful index in the management of the preterm infant. The perfusion index (PI) derived from a pulse oximeter is a marker that allows noninvasive and continuous monitoring of peripheral perfusion. The objective of this paper was to determine the accuracy of the PI for detecting low SVC flow in very low birth weight infants born before 32 weeks of gestation.
Study Design: We studied the correlation between PI and SVC flow 0 to 72 h after birth in very low birth weight infants born before 32 weeks of gestation. The best cut-off value for low SVC flow was calculated from the respective receiver-operating characteristic curves. Result: A positive correlation was found between the PI and SVC flow (r ¼ 0.509, P
