MOSBY CT PRACTICE EXAM #2
COMPLETE QUESTIONS AND
ANSWERS
as related to the cardiac cycle, the term _____ refers to the relaxation of the heart
muscle.
a. diastole
b. equilibrium
c. systole
d. a-fib -ANSa. diastole
which of the following may be considered one of the high osmolar contrast media
(HOCM)?
1. iothalamate meglumin
2. diatrizoate sodium
3. iohexol -ANS1 and 2
which of the following medications may be administered to a patient who is having a
severe anaphylactoid reaction to iodinated contrast material?
1. epinephrine
2. atropine
3. diphenhydramine -ANS1 and 3
the escape of contrast material from a needle or blood vessel into subcutaneous tissue
is called:
a. infusion
b. extraversion
c. influxation
d. extravasation -ANSd. extravasation
thorough explanation of the CT procedure and proper communication with the patient
are vital in ensuring that:
1. breathing instructions are properly followed
2. motion artifact does not occur
3. patient anxiety is kept at a minimum -ANS1, 2, and 3
risk factors for contrast induced nephrotoxicity (CIN) include:
1. pheochromocytoma
2. allergy to shellfish
,3. dehydration -ANS3 only
normal ranges for oxygen saturation is:
a. 20-25%
b. 50-60%
c. 80-85%
d. 95-100% -ANSd. 95-100%
which of the following laboratory measurements can be used to evaluate the renal
function of a patient?
1. blood urea nitrogen (BUN)
2. partial thromboplastin time (PTT)
3. creatinine -ANS1 and 3
which of the following would be best suited for intravenous injection of contrast material
with a power injector?
a. butterfly needle
b. central venous line
c. 23 gauge spinal needle
d. angiocatheter -ANSd. angiocatheter
before the intravenous injection of iodinated contrast material, patients should be
questioned regarding their:
1. renal function
2. allergic history
3. cardiac history -ANS1, 2, and 3
a(n) _____ infection is one that a patient acquires during a stay in a health care
institution.
a. blood borne
b. nosocomial
c. iatrogenic
d. staphylococcal -ANSb. nosocomial
which of the following sets of values would be considered normal levels for creatinine
and BUN, respectively?
a. 3.1 mg/dL; 1.2 mg/dL
b. 1.2 mg/dL; 14 mg/dL
c. 0.7 mg/dL; 39 mg/dL
d. 5.2 mg/dL; 12 mg/dL -ANSb. 1.2 mg/dL; 14 mg/dL
which of the following sizes of butterfly needles allows for the most rapid administration
of iodinated intravenous contrast media?
a. 19 gauge
b. 21 gauge
c. 23 gauge
, d. 25 gauge -ANSa. 19 gauge
the choice between ionic and nonionic contrast media should be based on:
1. the allergic history of patient
2. the cost of the contrast material
3. the age and physical condition of the patient -ANS1 and 3
which of the following is an example of a mild reaction to iodinated intravenous contrast
media?
a. dyspnea
b. shock
c. pulmonary edema
d. vomitting -ANSd. vomitting
during which of the following CT procedures is the patient required to give informed
consent?
a. noncontrast CT of the chest
b. renal stone survey
c. 3-D reconstruction of hip
d. abdomen scan after IV contrast agent administration -ANSd. abdomen scan after IV
contrast agent administration
the international normalized ratio (INR) is calculated to standardize which of the
following laboratory values?
a. prothrombin time (PT)
b. partial thromboplastin time (PTT)
c. blood urea nitrogen (BUN)
d. glomerular filtration rate (GFR) -ANSa. prothrombin time (PT)
which of the following infection control techniques is required at the site of an
intravenous injection of iodinated contrast media?
a. contact isolation
b. surgical asepsis
c. medical asepsis
d. enteric precautions -ANSb. surgical asepsis
which of the following is a common site for the intravenous injection of iodinated
contrast media?
1. cephalic vein
2. antecubital vein
3. basilic vein -ANS1, 2 and 3
an intrathecal injection before a CT exam of the lumbar spine iodinated contrast
material directly into the:
a. subarachnoid space
b. dura mater
COMPLETE QUESTIONS AND
ANSWERS
as related to the cardiac cycle, the term _____ refers to the relaxation of the heart
muscle.
a. diastole
b. equilibrium
c. systole
d. a-fib -ANSa. diastole
which of the following may be considered one of the high osmolar contrast media
(HOCM)?
1. iothalamate meglumin
2. diatrizoate sodium
3. iohexol -ANS1 and 2
which of the following medications may be administered to a patient who is having a
severe anaphylactoid reaction to iodinated contrast material?
1. epinephrine
2. atropine
3. diphenhydramine -ANS1 and 3
the escape of contrast material from a needle or blood vessel into subcutaneous tissue
is called:
a. infusion
b. extraversion
c. influxation
d. extravasation -ANSd. extravasation
thorough explanation of the CT procedure and proper communication with the patient
are vital in ensuring that:
1. breathing instructions are properly followed
2. motion artifact does not occur
3. patient anxiety is kept at a minimum -ANS1, 2, and 3
risk factors for contrast induced nephrotoxicity (CIN) include:
1. pheochromocytoma
2. allergy to shellfish
,3. dehydration -ANS3 only
normal ranges for oxygen saturation is:
a. 20-25%
b. 50-60%
c. 80-85%
d. 95-100% -ANSd. 95-100%
which of the following laboratory measurements can be used to evaluate the renal
function of a patient?
1. blood urea nitrogen (BUN)
2. partial thromboplastin time (PTT)
3. creatinine -ANS1 and 3
which of the following would be best suited for intravenous injection of contrast material
with a power injector?
a. butterfly needle
b. central venous line
c. 23 gauge spinal needle
d. angiocatheter -ANSd. angiocatheter
before the intravenous injection of iodinated contrast material, patients should be
questioned regarding their:
1. renal function
2. allergic history
3. cardiac history -ANS1, 2, and 3
a(n) _____ infection is one that a patient acquires during a stay in a health care
institution.
a. blood borne
b. nosocomial
c. iatrogenic
d. staphylococcal -ANSb. nosocomial
which of the following sets of values would be considered normal levels for creatinine
and BUN, respectively?
a. 3.1 mg/dL; 1.2 mg/dL
b. 1.2 mg/dL; 14 mg/dL
c. 0.7 mg/dL; 39 mg/dL
d. 5.2 mg/dL; 12 mg/dL -ANSb. 1.2 mg/dL; 14 mg/dL
which of the following sizes of butterfly needles allows for the most rapid administration
of iodinated intravenous contrast media?
a. 19 gauge
b. 21 gauge
c. 23 gauge
, d. 25 gauge -ANSa. 19 gauge
the choice between ionic and nonionic contrast media should be based on:
1. the allergic history of patient
2. the cost of the contrast material
3. the age and physical condition of the patient -ANS1 and 3
which of the following is an example of a mild reaction to iodinated intravenous contrast
media?
a. dyspnea
b. shock
c. pulmonary edema
d. vomitting -ANSd. vomitting
during which of the following CT procedures is the patient required to give informed
consent?
a. noncontrast CT of the chest
b. renal stone survey
c. 3-D reconstruction of hip
d. abdomen scan after IV contrast agent administration -ANSd. abdomen scan after IV
contrast agent administration
the international normalized ratio (INR) is calculated to standardize which of the
following laboratory values?
a. prothrombin time (PT)
b. partial thromboplastin time (PTT)
c. blood urea nitrogen (BUN)
d. glomerular filtration rate (GFR) -ANSa. prothrombin time (PT)
which of the following infection control techniques is required at the site of an
intravenous injection of iodinated contrast media?
a. contact isolation
b. surgical asepsis
c. medical asepsis
d. enteric precautions -ANSb. surgical asepsis
which of the following is a common site for the intravenous injection of iodinated
contrast media?
1. cephalic vein
2. antecubital vein
3. basilic vein -ANS1, 2 and 3
an intrathecal injection before a CT exam of the lumbar spine iodinated contrast
material directly into the:
a. subarachnoid space
b. dura mater
