Pulse Oximetry

Abstract

Objective. To compare the accuracy of pulse oximetry oxygen saturation (SpO₂) measured on the right wrist and right ankle in relation to the ipsilateral palm and sole, respectively. Study Design. A prospective observational study carried out on neonates and infants admitted to intensive care units. SpO₂ was measured at the right palm and wrist and the right sole and ankle. Sensitivity and specificity tests were performed. Results. Ninety-four patients, mean postnatal age of 29.9 days, were included in our study. Sensitivity and specificity tests for right wrist SpO₂ in comparison to right palm SpO₂ revealed sensitivity of 100% and specificity of 80.4%. Sensitivity and specificity tests for right ankle SpO₂ in comparison to right sole SpO₂ revealed sensitivity of 100% and specificity of 77.4%. Conclusion. The results of the current study revealed that the wrist and ankle can be alternative placement sites for the measurement of SpO₂ in newborn and infants instead of the routinely used palm or sole.