The Effects of Different Ventilator Strategies on Inflammation and Injury in Normal Lungs

This research is being done to determine if there is a way the investigators can improve the techniques that they use to assist patients with their breathing during surgery. The majority of surgeries require patients to concurrently undergo general anesthesia. This usually includes a breathing tube and a machine that breathes for the patient during the duration of the surgery. The doctors would like to investigate the effects of this type of anesthesia to healthy adult patients and whether they can improve the way they give general anesthesia to patients. The investigators plan to ask approximately 200 patients to participate. If the patients decide to participate in the study,some additions will be made to the standard anesthetic care they receive. The patients will additionally be monitored for adequate oxygenation in their blood as well as level of inflammation in their blood and lungs. The patients' breathing tube will be bathed with warm normal saline and suctioned twice during the operation. When these procedures are done the patients will be asleep and not be aware of what is happening.