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
Blood Car Feature Film at the 2007 Chicago Underground Film Festival Winner - Best Feature Narrative Film at the 2007 Philadelphia FirstGlance Film Festival Winner - Best Narrative Feature Film Award at the 2007 Atlanta Underground Film Festival Winner - Audience Award 2007 Faux Film Festival Winner - Best Feature – 2007 Backseat Film Festival Though filmed in 2007, the film released in the United Kingdom on 23 February 2012. Blood Car Blood Car is a 2007 black comedy film set in the not-too-distant future where gasoline prices have become exorbitant ($30+ US/gallon). Things take a turn for the worse when a