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Mosby's CT Registry Review 3rd Ed. Practice Exam #1 Questions and Answers Scored A+
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Mosby's CT Registry Review 3rd Ed. Practice Exam #1
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Mosby's CT Registry Review 3rd Ed.Practice Exam #1
An average range for activated partial thromboplastin time (PTT) is: - answer25-35
seconds.
PTT is a lab measure of blood coagulation.
What is the correct angle of insertion for placing a butterfly needle into a vein for
intravenous administration of a contrast agent? - answer15 degrees
It's also important that the vein be properly stabilized and needle be inserted gently with
bevel facing upward.
A total volume of 125 mL of an iodinated contrast agent is administered intravenously
via automatic injector in 50 seconds. The flow rate for this injection is: - answer2.5
mL/sec
Flow rate may be calculated by dividing total contrast volume by time of injection.
The condition whereby the pt suffers from a low concentration of oxygen in the blood is
called: - answerhypoxemia
While one is obtaining a thorough history from a pt before the intravenous injection of an
iodinated contrast material, which of the following topics should be included?
1. any prior allergic reactions to CM
2. presence of HIV or hepatitis infection
3. hx of asthma - answer1 and 3 only.
Which of the following factors may affect a pt's calculated GFR?
1. age
2. sex
3. race - answer1, 2, and 3
Which of the following IV contrast agent administration methods provides the greatest
overall plasma iodine concentration?
a. drip infusion
b. bolus technique
c. biphasic technique
d. CT portography - answerbolus technique
,A bolus admin. of contrast agent requires entire vol of material to be injected over the
shortest possible time. Bolus admin provides the maximum plasma iodine concentration
and subsequent tissue enhancement.
A patient in shock may exhibit which of the following sx?
1. tachycardia
2. rapid, shallow breathing
3. cyanosis - answer1, 2, and 3
Other sx include pallor, hypotension, and cold, clammy skin
The drug SOLU-CORTEF may be classified as which of the following?
a. anticholinergic
b. bronchodilator
c. antihistamine
d. corticosteroid - answercorticosteroid
SOLU-CORTEF is a brand name for hydrocortisone. Corticosteroids may be used
during tx of anaphylactoid reactions to iodinated CM.
Which of the following is a nonionic contrast material?
a. iodamide
b. iothalamate
c. iohexol
d. diatrizoate - answeriohexol
Nonionic CM include iopamidol (Isovue), iohexol (Omnipaque), and iopromide
(Ultravist).
What term is used to describe a pt who is having difficulty breathing? - answerdyspnea
What term describes the situation in which an assumption is made that an unconscious
or otherwise physically unable pt consents to medical treatment? - answerimplied
consent
Complete cardiac diastole corresponds to which portion of the cardiac cycle on an
electrocardiogram (ECG)? - answerT wave
During CT arthrography, iodinated contrast media is injected directly into the: -
answerjoint space
Which of the following is considered one of the iso-osmolar contrast media (IOCM)?
a. iodixanol
b. iopamidol
c. iohexol
d. ioversol - answeriodixanol (Visipaque)
, Iohexol (Omnipaque), iopamidol (Isovue), and ioversol (Optiray) are all nonionic low-
osmolar contrast media (LOCM)
A common site for the IV administration of iodinated CM is the anterior recess of the
elbow, otherwise known as the: - answerantecubital space
The potentially serious decline in renal function after the IV administration of CM is
called: - answercontrast-induced nephrotoxicity (CIN)
Advantages of saline flush immediately after the IV administration of iodinated CM
include:
1. reduction in required contrast agent dose
2. reduction in the incidence of contrast-induced nephrotoxicity (CIN)
3. reduction of streaking artifact from dense contrast agent in the vasculature - answer1,
2, and 3
Use of saline flush also improves overall contrast agent utilization efficiency of the CT
exam
Which of the following meds may be administered to dilate the coronary vasculature
prior to cardiac CT examination?
a. sublingual nitroglycerine
b. beta-blocker
c. atropine
d. albuterol - answersublingual nitroglycerine
Normal range for diastolic blood pressure in an adult is: - answer60-90 mm Hg
Which of the following is a parenteral route of medication administration?
a. sublingual
b. intramuscular
c. transdermal
d. oral - answerintramuscular
Which of the following types of isolation techniques protects against infection
transmitted through fecal material?
a. acid-fast bacillus isolation
b. contact isolation
c. enteric precautions
d. drainage-secretion precautions - answerenteric precautions
Which of the following is considered one of the ionic radiopaque contrast media (RCM)?
a. iohexol
b. iothalamate meglumine
c. iopamidol
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