A serious shortage of oxygen for a few minutes is fatal.ĭuring anaesthesia, patients’ airways may become obstructed, their breathing may become depressed, their circulation may be affected by blood loss or an abnormal heart rhythm or the anaesthetic equipment may develop a problem such as an accidental disconnection or obstruction of the breathing circuit. Shortage of oxygen in the body is called hypoxia. All organs require oxygen for metabolism but the brain and heart are particularly sensitive to a lack of oxygen. Is this reading high or low? Is any action required? A patient undergoing general anaesthesia for hernia repair has an oxygen saturation of 82% during surgery.What is the normal oxygen saturation in arterial blood?.How is oxygen transported from the atmosphere to the tissues?.The correct answers are in the next section. How much do you know about how an oximeter works – before reading the tutorial, we would like you to assess your knowledge about pulse oximetry. Feedback would be very useful and should be sent to oximetry is used every day in our theatres and recovery areas. The WFSA has been working on information about pulse oximetry and the following tutorial is part of the material.
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