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Anesthesia Machines ➖➖➖➖➖➖➖➖➖➖➖ Purpose • Anesthesia units dispense a mixture of gases and vapors and vary the proportions to control a patient’s level of consciousness and/or analgesia during surgical procedures. Functions • Provide oxygen (O2) to the patient. • Blend gas mixtures that can include (besides O2) an anesthetic vapor, nitrous oxide (N2O), other medical gases, and air. • Facilitate spontaneous, controlled, or assisted ventilation with these gas mixtures. • Reduce, if not eliminate,