Which system has up to two times the buffering power of all of the chemical buffering systems combined?
A. renal system
B. hepatic buffering system
C. respiratory system
D. gastric buffering system
Answer: C
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You are with a group of hikers on the third day of an 11,000-foot mountain ascent. One of the hikers has not been feeling well for a couple of days. Today, members of the group notice that he is having difficulty getting dressed and speaking. From your training in outdoor emergency care, you recognize that these signs and symptoms are most often associated with:
a. acute mountain sickness. b. peripheral neuropathy. c. frostbite. d. HACE.
In most weaning protocols, what minimum blood gas parameters are needed to start the process?
a. PaO2 greater than 70 mm Hg and PaCO2 less than 50 mm Hg on FiO2 less than 0.6 and PEEP less than 5 cm H2O b. PaO2 greater than 70 mm Hg and PaCO2 less than 50 mm Hg on FiO2 less than 0.4 and PEEP 5 cm H2O or greater c. PaO2 greater than 50 mm Hg and PaCO2 less than 50 mm Hg on FiO2 less than 0.6 and PEEP less than 10 cm H2O d. PaO2 greater than 70 mm Hg and PaCO2 less than 70 mm Hg on FiO2 less than 0.6 and PEEP 5 cm H2O or greater
The number of secondary left bronchi is
A) 1. B) 2. C) 3. D) 4.
Which of the following is not considered a sign or symptom indicating a tension pneumothorax?
(A) Dyspnea (B) Hyperresonance to percussion (C) Distended jugular veins (D) Clear lung sounds