Arteries carry oxygen and nutrient-rich blood from the heart to tissues and organs throughout the body.
Veins carry blood that is higher in waste products and carbon dioxide back to the heart and lungs.
The arterial line allows nurses and doctors to monitor these levels at regular intervals. The arterial line is attached to a monitor. Click Here To Return To List Brain Stem Evoked Response Equipment Auditory brain stem responses evoked by stimulating the brain stem with painless sound waves using headphones. These sound waves are received by the brain, and a machine is used to test whether the brain stem has received the signals. The quality of the brain stem's functioning in a comatose patient is thought to be an important indicator of the degree and location of brain injury.