Blood gas tension Blood gas tension Blood gas tension refers to the partial pressure of gases in blood. There are several significant purposes for measuring gas tension; the most common gas tensions measured are oxygen tension (PO), the carbon dioxide tension (PCO) and carbon monoxide tension (PCO). The subscript "x" in each symbol represents the source of the gas being measured; ""a"" meaning arterial, ""A"" being alveolar, ""v"" being venous, ""c"" being capillary. Blood gas tests (such as arterial blood gas tests) measure these partial pressures. PO – Partial pressure of oxygen at sea level (765 mmHg) in arterial blood is between 75
Hemoglobin Hopkins-2 endocarditis and thrombosis. Osler's initial observations of platelets catalyzed the study of blood and hematology at Hopkins and in other research environments. Beginning in 1920, doctors at Johns Hopkins Hospital conducted research on sickle cell anemia, or sickle cell disease. Although their conclusions surrounding the disease are outdated, Doctors Taliaferro and Huck discovered a latent form of sickle cell anemia. Their study on sickle cell anemia was the first of many to occur at Hopkins. In 1940, Irving Sherman, a medical student at Johns Hopkins, correctly identified the deoxygenation of hemoglobin in sickle cell patients after he noted refraction patterns