Which One of the Following Patients Has an Isolated Head

Which one of the following patients has an isolated head injury that should be considered the most serious?

A) 31-year-old male who is nonverbal and extends his arms and legs when you pinch the muscles on his shoulder
B) 62-year-old female who fell and hit her head and is becoming more confused and combative
C) 53-year-old female who fell and has a large laceration that is bleeding heavily on the back of her head
D) 21-year-old male wearing a deformed motorcycle helmet who does not respond to verbal or painful stimuli