The SEDLine™ Brain-Function Monitoring System is an easy-to-use brain-function monitor, or EEG (electroencephalogram), that measures the effects of anesthesia and sedation by analyzing a patient's brain activity during medical procedures. Through Hospira's unique four-channel sensor placed on the patient's forehead and temple area, SEDLine monitors multiple parts of the brain to compute a proprietary measurement called the Patient State Index or PSI. The PSI numeric value helps clinicians evaluate a patient's response to anesthesia and sedation when used with other traditional anesthetic and sedation monitoring methods, enabling the caregiver to more precisely administer the appropriate medication dose.