In what percentage of patients with pneumonia has no microbial agent been isolated?
a. Up to 40%
b. Up to 50%
c. Up to 60%
d. Up to 70%
ANS: B
In most published series, no microbiological diagnosis is established in up to 50% of patients.
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The right atrium receives blood from the head and neck via which vessel?
A) Ascending aorta B) Inferior vena cava C) Descending aorta D) Superior vena cava
___________________ fires involve live electrical equipment
a. Class A b. Class B c. Class C d. Class D
Parasympatholytics are also called anticholinergics or __________ blockers
Fill in the blank(s) with correct word
What effect do propranolol and isoproterenol have on CI?
a. Both will decrease CI b. Propranolol will decrease CI; isoproterenol will increase CI c. Propranolol will increase CI; isoproterenol will decrease CI d. Both will increase CI