Measuring oxygen levels

THE introduction of pulse oximetry into hospital-based practice and subsequently into the community setting in general practice, community nursing and the home setting has been a considerable advance in the care of children.

Oximetry provides a continuous indication of the oxygen saturation in the peripheral circulation in a non-invasive manner.

The oxygen saturation refers to the percentage of available haemoglobin that is bound with oxygen (oxyhaemoglobin).

In addition, there is a component of oxygen that is dissolved in the plasma which is the