We seem to have developed a range of new vocabulary since the onset of the Covid-19 global pandemic. Suddenly words such as self-isolate, health modelling and social distancing have become the norm. Some of the medical terminology that’s now filling our social media feeds can be unknown and confusing. A question I’ve seen a few times is, ‘What are oxygen sats?’ so I thought I’d answer it in my #quickquestion series. Red blood cells carry oxygen around our body. They pick up oxygen molecules when they travel through the lungs and then transport it around the body attached to haemoglobin, which is a protein in the red cell. Our body’s organs and tissues need a steady supply of oxygen for them to function. Oxygen sats is the short form of oxygen saturation and is a measure of how close blood is to being completely saturated with oxygen. Sats are measured in per cent and the goal is 100 per cent. You might also see oxygen abbreviated to its chemical symbol O2. Healthy people will have …