I don’t like hospitals. This is probably why I didn’t become a nurse despite the fact that occasionally I've thought about being one since undeniably, they make good money in this country. Thank God I don’t get sick often, the last time I’ve been to a hospital was during a minor surgery on my left breast to remove a benign lump 3 years ago. But on several occasions, I had to accompany someone or visit relatives and friends in the hospital so I’ve had my fair share of hospital experiences. The first time I’ve seen pulse oximeters I didn’t know what to think of it. It looked like small staplers to me and I wasn’t quite sure how they work, let alone know what they are called. In some of the series shows that I’d love to watch on TV, I kept on seeing this tiny device on hospital patients and I thought it’s time for me to be acquainted with it so I googled it. So now I know that it measures the oxygen saturation of a patient’s blood and changes in blood volume in the skin. Alright, thanks Google!