Cancer treatments made from natural products produced by Streptomyces are known as:
A. interferons
B. biologic-response modifiers
C. antitumor antibiotics
D. hormonal agents
c
Rationale: Antitumor antibiotics are made from natural products produced by species of the soil fungus Streptomyces. They are only used to treat cancer and are not used to treat infections.
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After ventilating for 30 seconds, check the heart rate. If the heart rate is less than 60 beats per minute, you should:
A) stop artificial ventilations and apply oxygen via nonbreather mask. B) stop artificial respirations and apply oxygen via nasal cannula. C) continue ventilating for an additional 60 seconds. D) continue ventilations and begin chest compressions.
Under which of the following conditions is it necessary to use a grid for an axial shoulder projec-tion?
1. The AP measurement is over 4 inches (10 cm). 2. The kilovoltage used is above 60. 3. The inferosuperior measurement is over 4 inches (10 cm). 4. The kilovoltage used is below 60. a. 1 and 2 only b. 2 and 3 only c. 1 and 4 only d. 3 and 4 only