SpO2 - SIMLabHAW/SIMLab-Emergency-Simulator GitHub Wiki
On this page, the peripheral/pulseoxymetric oxygen saturation (SPO2) is explained. Thereby, the method of recording is described together with a demonstration of the simulation in the ES.
SPO2 states the peripheral or pulseoxymetric oxygen saturation (S = saturation, p = peripheral, O2 = oxygen). The oxygen saturation indicates how much of an individual's haemoglobin is bound to oxygen. It is described by the ratio of oxygenated haemoglobin compared to the total sum of haemoglobin and is therefore given in [%]. When monitoring a patient, this value helps to investigate whether the patient breathes effectively and how well its blood is transported through the body. Normal blood oxygen levels of a healthy individual are between 95 - 100%.
To find out more about normal blood oxygen level and how certain factors influence it, just follow this link
Most commonly, SPO2 is recorded by pulse oximetry. This is a non-invasive procedure which measures the pulse and oxygen saturation of the blood. Therefore, a small clip is attached to the patient's finger or ear lobe. Oximeters are based on the principles of spectrophotometry. This means that they take advantage of the ability of deoxygenated and oxygenated blood to absorb red and infrared light respectively. Hence, the resulting absorption waveform correlates to arterial blood saturation.
More information on the different uses, possible sources of error, and how to improve the application is to be found by following these links:
Depending on whether being logged on to the Emergency Simulator as trainer or trainee, the provided user-interfaces vary since both of the roles follow different interests when using the software. The specific sets of parameters regarding SPO2 can be modified or controlled in order to achieve the best experience out of the simulation.
The Trainer has several options to adjust the SPO2 waveform. In order to turn on the simulation of SPO2 displayed on the trainee's screen, the button to its left must be operated as demonstrated below.
Changes to the SPO2 can be done by either using the arrows next to the white selection box or by changing the value manually by entering the desired figure with characters. The modified value must then be confirmed by clicking the blue "OK" button on the top right of the screen as demonstrated on the ECG page, in chapter "Implementation of the Simulation of ECG". After confirming the selection, the simulation on the trainee's view is adapted accordingly.
The trainee's view on the SPO2 simulation is shown below.
If the SPO2 goes down to 85% or lower, the trainee is alerted by a red frame around the indicated value and an alarm tone as described in further detail on the ECG page, in chapter "Implementation of the Simulation of ECG". The critical value for the alarm signals can be modified by using the button on the bottom right. To get an overview of the other adjustment options, continue reading on the General Features page.
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