Oxygen reserve index (ORI) measured by multiple wave pulse co-oximeter is a new technological development in medical science. Our aim in this study is to identify the correlation between arterial oxygen pressure (PaO2) and ORI, and to identify the specificity and sensitivity of ORI as a tool to prevent hypoxia and hyperoxia in abdominal surgery patients.
Patients aged between 20-55 years old,American Society of Anesthesiologists physical status 1-2 who will have hemicolectomy will be included to the study. If hemodynamic instability or a sudden decrease in oxygen saturation by pulse oximetry (SpO2) occurs, arterial blood gas analysis will be taken from the patient and ORI, SpO2, PaO2, and arterial oxygen saturation (SaO2) will be recorded. The primer endpoint of the study is to identify the correlation between PaO2 and ORI, seconder end-point is to identify the specificity and sensitivity of ORI as a detector of PaO2. Pearson test for correlation, regression analysis for sensitivity and specificity will be performed. The study will include 240 patients according to power analysis
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
SCREENING
Masking
NONE
Enrollment
240
Cigdem Akyol Beyoglu
Istanbul, Turkey (Türkiye)
Evaluation of the correlation between partial oxygen pressure in arterial blood sample and oxygen reserve index calculated by pulse co-oximetry, and sensitivity and specificity of oxygen reserve index in patients undergoing hemicolectomy
Time frame: oxygen reserve index and peripheric oxygen saturation will be recorded before and after induction of anesthesia, and every 5 minutes and arterial partial oxygen pressure in every 30 minutes during hemicolectomy.
Sensitivity and specificity of oxygen reserve index
Time frame: During Hemicolectomy
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