Why Does a Patient Involved in an Auto Crash Who

Why does a patient involved in an auto crash who has major internal abdominal bleeding require oxygen to maintain internal respiration?

A) The red blood cells have a reduction of hemoglobin that reduces the amount of oxygen that can be transported.
B) A lack of oxygen in the air decreases the oxygen diffused into the bloodstream, which creates an increase of carbon dioxide.
C) The swelling of the abdominal space causes the diaphragm to be restricted, which will reduce the thorax space.
D) A lack of circulating volume decreases the oxygen and carbon dioxide transport capability.