QUESTIONS WITH CORRECT ANSWERS
An intrathecal injection is associated with which of the following
examinations?
A
Intravenous urogram
B
Retrograde pyelogram
C
Myelogram
D
Cystogram - CORRECT ANSWER - C
Myelogram
An intrathecal injection is one made within the spinal meninges.
A myelogram requires an intrathecal injection to introduce
contrast medium into the subarachnoid space. An IVU requires
an intravenous injection; a retrograde pyelogram requires that
contrast medium be introduced into the ureters by way of
,cystoscopy. A cystogram requires that contrast medium be
introduced via catheter into the urinary bladder. (Frank, Long,
and Smith, 11th ed., vol. 1, p. 286)
29.2:
Patients are instructed to remove all jewelry, hair clips, metal
prostheses, coins, and credit cards before entering the room for
an examination in
A
sonography
B
computed tomography (CT)
C
magnetic resonance imaging (MRI)
D
nuclear medicine - CORRECT ANSWER - C
magnetic resonance imaging (MRI)
Patients are instructed to remove all jewelry, hair clips, metal
prostheses, coins, and credit cards before entering the room for
MRI. MRI does not use radiation to produce images but instead
uses a very strong magnetic field. All patients must be screened
,prior to entering the magnetic field to be sure that they do not
have any metal on or within them. Proper screening includes
questioning the patient about any eye injury involving metal,
cardiac pacemakers, aneurysm clips, insulin pumps, heart valves,
shrapnel, or any metal in the body. This is extremely important,
and if there is any doubt, the patient should be rescheduled for
a time after it has been determined that it is safe for him or her
to enter the room. Patients who have done metalwork or
welding are frequently sent to diagnostic radiology for screening
images of the orbits to ensure that there are no metal fragments
near the optic nerve. Any external metallic objects, such as
bobby pins, hair clips, or coins in the pocket, must be removed,
or they will be pulled by the magnet and can cause harm to the
patient. Credit cards and any other plastic cards with a magnetic
strip will be wiped clean if they come in contact with the
magnetic field. (Torres et al., 6th ed.
29.3:
With the patient recumbent on the x-ray table with the head
lower than the feet, the patient is said to be in the
A
Trendelenburg position
B
, Fowler position
C
decubitus position
D
Sims position - CORRECT ANSWER - A
Trendelenburg position
When the patient is recumbent with the head lower than the
feet, he or she is said to be in the Trendelenburg position. The
decubitus position is used to describe the patient who is
recumbent (prone, supine, or lateral) with the CR directed
horizontally. In the Fowler position, the patient's head is
positioned higher than the feet. The Sim position is the (LAO)
position assumed for enema tip insertion. (Bontrager and
Lampignano, 6th ed., pp. 18, 20)
29.4:
The stomach of an asthenic patient is most likely to be located
A
high, transverse, and lateral.
B
low, transverse, and lateral.
C