a. Anesthesia. A partial or complete loss of sensation, with or without loss of consciousness, as a result of a disease, an injury, or administration of a drug.
b. Cyanosis. A Greek word for the slightly bluish-gray or purple discoloration of the skin due to a deficiency of oxygen and an excess of carbon dioxide in the blood. (Oxygen in the blood makes it look red and gives the skin a pink tone.)
c. Narcotics. A group of drugs producing stupor, sleep, or complete unconsciousness; used to allay pain. Narcotics are regulated by federal laws.
d. NPO. Nothing by mouth (Latin, nulli per os).
e. Perioperative Period. The period extending from the time of hospitalization for surgery to the time of discharge (see Figure 1-1)
f. Preoperative Phase. That phase of the perioperative period during which the nurse admits the patient to the surgical unit and helps the individual prepare physically and emotionally for the operation.
g. Prosthesis. An artificial organ or part; for example, an artificial limb, eyeglasses, or dentures.
h. Thrombophlebitis. Inflammation of a vein associated with thrombus formation.
i. Thrombus. A blood clot.