Category: O

  • Oxyiodide

    A compound of iodine and oxygen with an element or radical.  

  • Oxyhemoglobin dissociation curve

    The mathematical relationship between the partial pressure of oxygen and the percentage of saturation of hemoglobin with oxygen (i.e., the proportion of oxyhemoglobin to reduced hemoglobin). Factors that favor a shift of the curve to the right, accelerating the decomposition of hemoglobin, are a rise in temperature and an increase of H ions that results…

  • Oxyhematoporphyrin

    A derivative of hematoporphyrin sometimes present in urine.  

  • Oxyhematin

    An iron compound that constitutes the coloring matter in oxyhemoglobin. When oxidized, it yields hematinic acid; when reduced, hematoporphyrin.  

  • Oxygenic

    Concerning, resembling, containing, or consisting of oxygen.  

  • Oxygen delivery system

    An apparatus that provides a concentration of inhaled oxygen greater than that of room air. A fixed-performance oxygen delivery system provides a consistent oxygen concentration. A variable-performance oxygen delivery system provides an oxygen concentration that may vary with changes in the patient’s breathing pattern.  

  • Oxygen delivery

    The amount of oxygen carried to the tissues, i.e., the cardiac output multiplied by the oxygen content of arterial blood.  

  • Oxygen content

    The amount of oxygen in volume percent that is present in the blood at any one moment.  

  • Oxygen concentrator

    A device used for home oxygen therapy that removes most of the nitrogen from room air and delivers the oxygen at a low flow rate. A device utilized in oxygen therapy that segregates oxygen from the surrounding air and subsequently blends it to achieve a higher concentration. This enriched oxygen-air mixture is conveyed through a…

  • Oxygen capacity

    The maximum amount of oxygen expressed in volume percent (cc per 100 ml) that a given amount of blood will absorb. For normal blood it is about 20 cc.