The patient in the emergency department begins projectile vomiting. Which intervention is most important?  

The new mother reports the baby makes snoring noises while trying to breastfeed. The nurse anticipates an examination will reveal narrowing at which level of the airway?

The nurse is assigned to a patient with chronic alcoholism and alcoholic cirrhosis. Examination of the patient is significant for dilated tortuous veins around his umbilicus and internal hemorrhoids. On the morning of his third day of the current admission, the patient acutely begins to vomit up large amounts of blood. Which describes the pathophysiology that most likely caused this event?