Red blood cell oxygen has been released the resulting deoxyhemoglobin is of a dark red burgundy color. However, blood can appear bluish when seen through the vessel wall and skin. Pulse oximetry takes advantage of the hemoglobin color change to directly measure the arterial blood oxygen saturation using colorimetric techniques. Hemoglobin also has a very high affinity for carbon monoxide, forming carboxyhemoglobin which is a very bright red in color. Flushed, confused patients with a saturation reading of 100% on pulse oximetry are sometimes found to be suffering from carbon monoxide poisoning. Having oxygen-carrying proteins inside specialized cells (as opposed to oxygen carriers
Hemoglobin D-Punjab Angeles”. Hemoglobin D is the 4th most common hemoglobin variant. It developed as a response to the selective pressures of malaria in these regions of Asia. Hemoglobin is the main ingredient in red blood cells. People with hemoglobin D trait have slightly more hemoglobin A than hemoglobin D. People with Hemoglobin D trait do not have health problems related to having the trait. People with hemoglobin D trait do not have Hemoglobin D disease or sickle cell disease. They cannot develop these diseases later in life. Hemoglobin helps red blood cells carry oxygen from the lungs to other parts of