Calculating Functional Obsolescence in Cost Approach Regarding a functional obsolescence deficiency that lacks something, the calculation is the difference between the reproduction cost with the curable item and without it, as of the date of appraisal.Note that this is reproduction cost and not replacement cost.Functional obsolescence is the excess cost of adding the item in question, such as an additional bathroom or the new kitchen, to the existing house compared to what it would have cost at the time of construction.Since it is an added item, only the cost new is utilized.unctional obsolescence is the excess cost of adding the item in question, such as an additional bathroom or the new kitchen, to the existing house compared to what it would have cost at the time of construction. Since it is an added item, only the cost new is utilized.
A: Blood oxygen level is measured using pulse oximetry, a noninvasive procedure designed to monitor the delivery of oxygen to peripheral tissue, says Johns Hopkins Medicine. Pulse oximetry uses hemoglobin coloration and blood flow pulsation to measure the blood oxygen level.
What is pulse oximetry? Pulse oximetry is a noninvasive method that enables the measurement of a personâs blood oxygen saturation, which is often referred to as SpO2 or âThe Fifth Vital Signâ (the first 4 being your pulse, temperature, blood pressure and respiratory rate).he ratio of red to infrared light that goes through the Pulse Ox âs photo diode indicates the percentage of oxygenated versus deoxygenated hemoglobin that your blood contains. This blood oxygen saturation is also called SpO2.