الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Complex changes occur throughout transition from intrauterine to extrauterine life. Evaluation of the newborn through this transition includes clinical assessment through APGAR score which has a wide interobserver variability and affected by several factors as gestational age or maternal sedation. Monitoring of both heart rate and peripheral arterial oxygen saturation through pulse oximeter don’t provide any information regarding the cerebral oxygenation. Near-infrared spectroscopy (NIRS) allows bedside, noninvasive and continuous monitoring of cerebral oxygenation.
The NIRS-measured cerebral regional oxygen saturation (crSO2) revealed a mixed oxygen saturation, with 80% of the value leaning towards venous oxygen saturation, revealing the balance of cerebral oxygen supply and oxygen consumption. Fractional tissue oxygen extraction (FTOE) is another NIRS metric for determining the amount of oxygen extracted by the tissue (estimate the balance between tissue oxygen delivery and consumption).
Reference ranges of crSO2 during transition after birth have been published. CrSO2 vary according to several factors as; the type of NIRs device, gestational age of studied newborns and the need of respiratory support.
The aim of the current study was to assess the values of cerebral oxygen saturation in the fullterm neonates in the first 10 minutes of life and to compare these values between neonates delivered by normal vaginal delivery and those delivered by elective cesarean section.
To accomplish this goal, 60 fullterm newborns were enrolled in this study. They were divided into 2 groups; the normal vaginal delivered group (30 newborns) and the cesarean delivered group (30 newborns).
Cerebral oxygen saturation (crSO2) for both groups were measured through the first 10 minutes of life together with peripheral arterial oxygen saturation and both crSO2 and SpO2 readings were recorded at 1,5 and 10 minutes of life. Additionally, FTOE calculated for both studied groups through the formula FTOE=(SpO2-crSO2)/SpO2. Umbilical blood gas was sampled for both studied groups.