Medical Definition of PULSE OXIMETER. : a device that measures the oxygen saturation of arterial blood in a subject by utilizing a sensor attached typically to a finger, toe, or ear to determine the percentage of oxyhemoglobin in blood pulsating through a network of capillaries and that typically sounds an alarm if the blood saturation becomes .... a device that measures the oxygen saturation of arterial blood in a subject by utilizing a sensor attached typically to a finger, toe, or ear to determine the percentage of oxyhemoglobin in blood pulsating through a network of capillaries.
Answer: The approximate distribution of blood types in the U.S. population is as follows: 1  O-positive: 38 percent. 2  O-negative: 7 percent. 3  A-positive: 34 percent. 4  A-negative: 6 percent. 5  B-positive: 9 percent. 6  B-negative: 2 percent. 7  AB-positive: 3 percent.
AB Negative blood wins for the rarest blood type. 1 in every 167 people are born with AB- Blood. (About .6% of the population) B Negative blood is the second most rare type. 1 in every 67 people are born with B- Blood (About 1.5% of the population) AB Positive blood type is the third most rare. 1 in every 29 people are born with AB+ Blood (About 3.4% of the population) A Negative blood is the fourth most rare type. 1 in every 16 people are born with A- Blood (About 6.3% of the population)