As the actual focal spot size increases, the effective focal spot size

A 17-year-old boy has fallen from a tree. He states that he cannot move his hands or feet. His blood pressure is 90/60. You suspect he is experiencing what type of shock?

A) Arterial shock B) Neurogenic shock C) Hypovolemic shock D) Obstructive shock

In which of the following situations is a pertinent negative identified?

A. A 53-year-old man with dizziness also tells you that he has vomited three times. B. A 50-year-old woman states that nothing makes her chest pain better or worse. C. A 59-year-old man complains of crushing chest pain but denies shortness of breath. D. A 56-year-old woman states that her chest hurts every time she takes a deep breath.