A catheter passed through a large vein in the neck and ending in the thoracic vena cava. It is used to measure venous pressure or to infuse medications and IV solutions.
Nil per os, Latin for “nothing by mouth”
Nothing per mouth or NPO refers to the direction of having nothing to eat or drink during a time period before surgery. Usually begins midnight the day before.
A medical doctor who is specialized in the practice of anesthesiology.