Final answer:
The nurse should report respiratory distress and decreased tidal volume as the most important information regarding a patient hospitalized with Guillain-Barré Syndrome.
Step-by-step explanation:
The nurse should report to the HCP respiratory distress and decreased tidal volume as the most important information regarding a patient hospitalized with Guillain-Barré Syndrome. This syndrome can lead to paralysis, including respiratory muscles, which can result in difficulty breathing and decreased tidal volume. This is a life-threatening condition that requires immediate medical attention.