A left-to-right cardiac shunt, due to a leak in the septum wall of the heart, would be best indicated by an increase
A. in PCWP
B. in mixed venous oxygen saturation
C. in mPAP
D. in arterial to venous oxygen content difference
Answer: B. A left-to-right cardiac shunt would best be observed by examining the oxygen saturation of mixed venous blood.
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_______ head injuries are those that result in a break in the bone and the overlying soft tissue
Fill in the blank(s) with the appropriate word(s).
In which of the following patients would a Combitube dual-lumen airway be used with caution?
A) A 28-year-old man who is in cardiac arrest after his kayak capsized, trapping him under water for several minutes B) A 40-year-old woman who has taken an overdose of tricyclic antidepressants and is unresponsive to all stimuli C) A 59-year-old man with a history of chronic alcoholism who was found in cardiac arrest at a homeless shelter D) A 16-year-old woman who is unresponsive following a motor vehicle collision in which she was ejected, sustaining traumatic brain injury