MOSBY'S CT REGISTRY REVIEW 3RD
EDITION: PRACTICE EXAM #1
QUESTIONS AND ANSWERS WITH
SOLUTIONS 2024
An average range for activated partial thromboplastin time (PTT) is: - ANSWER 25-35 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? - ANSWER 15 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: - ANSWER 2.5 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: -
ANSWER hypoxemia
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 - ANSWER 1 and 3 only.
Which of the following factors may affect a pt's calculated GFR?
1. age
,2. sex
3. race - ANSWER 1, 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 - ANSWER bolus 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 - ANSWER 1, 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 - ANSWER corticosteroid
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 - ANSWER iohexol
Nonionic CM include iopamidol (Isovue), iohexol (Omnipaque), and iopromide (Ultravist).
What term is used to describe a pt who is having difficulty breathing? - ANSWER dyspnea
What term describes the situation in which an assumption is made that an unconscious or otherwise
physically unable pt consents to medical treatment? - ANSWER implied consent
Complete cardiac diastole corresponds to which portion of the cardiac cycle on an electrocardiogram
(ECG)? - ANSWER T wave
During CT arthrography, iodinated contrast media is injected directly into the: - ANSWER joint space
Which of the following is considered one of the iso-osmolar contrast media (IOCM)?
a. iodixanol
b. iopamidol
c. iohexol
d. ioversol - ANSWER iodixanol (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: - ANSWER antecubital space
EDITION: PRACTICE EXAM #1
QUESTIONS AND ANSWERS WITH
SOLUTIONS 2024
An average range for activated partial thromboplastin time (PTT) is: - ANSWER 25-35 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? - ANSWER 15 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: - ANSWER 2.5 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: -
ANSWER hypoxemia
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 - ANSWER 1 and 3 only.
Which of the following factors may affect a pt's calculated GFR?
1. age
,2. sex
3. race - ANSWER 1, 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 - ANSWER bolus 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 - ANSWER 1, 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 - ANSWER corticosteroid
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 - ANSWER iohexol
Nonionic CM include iopamidol (Isovue), iohexol (Omnipaque), and iopromide (Ultravist).
What term is used to describe a pt who is having difficulty breathing? - ANSWER dyspnea
What term describes the situation in which an assumption is made that an unconscious or otherwise
physically unable pt consents to medical treatment? - ANSWER implied consent
Complete cardiac diastole corresponds to which portion of the cardiac cycle on an electrocardiogram
(ECG)? - ANSWER T wave
During CT arthrography, iodinated contrast media is injected directly into the: - ANSWER joint space
Which of the following is considered one of the iso-osmolar contrast media (IOCM)?
a. iodixanol
b. iopamidol
c. iohexol
d. ioversol - ANSWER iodixanol (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: - ANSWER antecubital space
