A dissecting aortic aneurysm occurs when:
A. all layers of the aorta suddenly contract.
B. a weakened area develops in the aortic wall.
C. the inner layers of the aorta become separated.
D. the aorta ruptures, resulting in profound bleeding.
Ans: C. the inner layers of the aorta become separated.
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Answer the following statement(s) true (T) or false (F)
1. Saturation current occurs when an increase in kVp no longer has an effect on the percentage of electrons accelerated across the x-ray tube. 2. Tungsten is the most common target material used because of its ability to enhance thermal conductivity, dissipate heat, and efficiently convert high-speed electrons to x-ray photons. 3. The thermionic cloud of electrons is kept from drifting away by the negative force of the focusing cup. 4. Tomography is referred to as linear because the x-ray tube and the image receptor move in same directions during the x-ray exposure. 5. The vacuum tube creates a less-efficient means of x-ray production.
The privacy rule is meant to ensure that there is/are
A) security of electronic transfer of information. B) disclosure of only the necessary information. C) no longer a need for patient consent. D) A and B.
During routine visits to her obstetrician, a pregnant woman's fetal heart rate (FHR) was near 140 bpm; however, as she neared delivery, the FHR dropped to approximately 120 bpm. What course of action should be taken?
A) She should be scheduled for a Caesarian section as soon as possible. B) Nothing - this is a normal response. C) Preparations should be made for the delivery of twins. D) Labor should be induced as soon as possible.
Central venous catheters are located in all of the following areas except:
a. the upper arm b. the lower leg c. the chest d. the clavicle