Sats. Saturation levels - specifically oxygen saturation levels. We use a device called an oximeter to determine the amount of oxygen that has bonded to the Haemoglobin. A normal, healthy person would be expected to have between 95% and 100% saturation - in other words their haemoglobin is attracting a full complement of oxygen molecules. If the level falls below 95%, something may be amiss. Levels below 90% are becoming critical.
Asthmatics may have low sats during an attack, say 93% and will need supplemental oxygen to boost their haemoglobin levels. People with chronic breathing problems usually always have low sats.
