Sarcouncil Journal of Medical Sciences

Abstract: Background: The Oxygenation Index (OI), an invasive diagnostic criterion, is often used as a marker of severity of acute respiratory distress syndrome (ARDS). In order to determine OI, arterial blood gas (ABG) through an invasive procedure is all-important used to obtain PaO2. The Oxygenation saturation Index (OSI), as an alternative method, can be achieved using pulse oximetry to assess SpO2 which is noninvasive & available even in remote areas. Aim of study: To evaluate the correlation of OI with OSI for assessment of ARDS’s patient in pulmonary and non-pulmonary cases of pediatrics. Patient and Method: This descriptive prospective study has been conducted on children between 30 days of age to 14 years old, under mechanical ventilation, who are admitted to PICU of child welfare teaching hospital in medical city. Admitted patients were categorized into two groups; patients with pulmonary disease who have experienced trauma, pneumonia, or aspiration and those who have non pulmonary disease and admitted due to metabolic and neurologic problems or poisoning. PaO2 values were measured through arterial blood sampling and spo2 values measured using pulse oximetry, maximum within one hour after ABG extraction. Corresponding measurements, as well as demographic and diagnostic information, were included in the database. Results: There is significant correlation between oxygenation index (OI) and oxygen saturation index (OSI). This result permit to us to use (OSI) as screening method rather than (OI) to avoid risks of invasive procedures. Conclusion: This study showed a strong correlation of OI with OSI