What is SPO2 in vital signs?

Is 7.5 high for a psa test result for a 55 year old male? Is cystitis an irritation of the urethra or meatus? Is resin dangerous to the body? Can you give penicillin to a horse for sinus infection? What is the primary curve of the spine? What symptoms to expect if gallstones completely filled the gallbladder? Where can outbreaks of dengue occur? I am two weeks late on my period I have taken 3 pregnancy tests and they've all been negative My period used to be very irregular I have also had a little bit of brown discharge Why is this? Progessive arthritis with stiffing of joints? What is the stage of the heart cycle in which the heart muscle contracts and the chambers pump blood? What is the function of blood clotting? When did Jonas salk discover Donna Lindsey? What if there was a cure for learning disabilities? What could cause numbness in your hand over days? What causes hands to itch scale and the skin to split? How many month can be implatation bleeding? Where does the first step of digestion ocuur? Is Ebola helical? What is the survival rate for stage Ia and I malignant melanoma patients? Pictures of Swine Flu?