Anesthesia monitors provide comprehensive clinical assessment and reliable evaluation of all vital functions of a patient in the operating room. These can also give details on the delivery of substances such as gases, drugs, and fluids. They generally keep track of four major vital signs. First is oxygenation which estimates the percentage of oxygen bound to hemoglobin in the blood, and second is ventilation monitoring which provides information about breathing and quantifies the volume of gas expelled from the lungs. The third is circulation monitoring which displays heart rate and arterial blood pressure, and last is temperature which is constantly evaluated for any significant clinical changes. Anesthesia monitors aid surgical teams to provide high patient safety and deliver better procedure outcomes. CO2 monitors, often called anesthesia monitors, are also used during procedures where the patient is under IV sedation using a drug such as Propofol.