1 Dizziness, lightheadedness, or fainting. 2  A pulse oximeter is a device that measures the amount of oxygen in your blood.  Blood tests may be done to measure blood gases, such as oxygen, acids, and carbon dioxide. Blood tests may also be used to find the cause of your hypoxia.
Iridium(noun) a rare metallic element, of the same group as platinum, which it much resembles, being silver-white, but harder, and brittle, and indifferent to most corrosive agents. With the exception of osmium, it is the heaviest substance known, its specific gravity being 22.4. Symbol Ir. Atomic weight 192.5.
Iridium is a chemical element with symbol Ir and atomic number 77.  It is a very hard, brittle, silvery-white transition metal of the  platinum family. 2 people found this useful.ridium is the least reactive material and also has a very high melting point. It can however react with Aqua Regia sometimes and at very high temperatures it reacts with Oxy â¦ gen to form Iridium Dioxide. It is the most resistant metal to corrosion, acids and other harmful substances.