The unconscious patient with elevated intracranial pressure secondary to an ischemic stroke has a jugular bulb catheter in place to monitor cerebral oxygenation (SJO₂). The patient’s oxygen saturation (read by peripheral pulse oximetry probe) is 98% on 30% FiO₂ administered via endotracheal tube. The SJO₂ is 85%. How does the nurse interpret these results?

The patient in the intensive care unit is intubated, sedated, and chemically paralyzed following decompensation due to necrotizing pneumonia. During the routine neurological check, the nurse notes these pupils: How does the nurse interpret this assessment?

The patient presents with a blood pressure of 135/95 mm Hg and appears jaundiced. She has a history of alcoholism, cirrhosis, and untreated hepatitis C. While the oncoming nurse is receiving report, the patient begins vomiting a large amount of blood. The nurse knows which to be the most likely cause of the patient’s hematemesis?