06-10-2011, 11:40 PM
A 32-year-old man is brought to the emergency
department 30
minutes after being involved in a motor vehicle
collision. He was the
restrained driver. On arrival, he is alert and has
shortness of breath.
His blood pressure is 80/50 mm Hg, pulse is 130/min,
and respirations
are 30/min. Examination shows jugular venous
distention and abrasions
over the left hemithorax. The trachea is deviated to
the right. Breath
sounds are absent on the left. Which of the following
is the most
likely cause of the hypotension?
A
) Cardiogenic shock
B
) Congestive heart failure
C
) Decreased systemic vascular resistance
D
) Decreased venous return
E
) Hypovolemic hypoperfusion
F
) Increased systemic vascular resistance
department 30
minutes after being involved in a motor vehicle
collision. He was the
restrained driver. On arrival, he is alert and has
shortness of breath.
His blood pressure is 80/50 mm Hg, pulse is 130/min,
and respirations
are 30/min. Examination shows jugular venous
distention and abrasions
over the left hemithorax. The trachea is deviated to
the right. Breath
sounds are absent on the left. Which of the following
is the most
likely cause of the hypotension?
A
) Cardiogenic shock
B
) Congestive heart failure
C
) Decreased systemic vascular resistance
D
) Decreased venous return
E
) Hypovolemic hypoperfusion
F
) Increased systemic vascular resistance