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Flashcards in TEST Deck (36):
1

which of the following radio graphic contrast agents functions to increase organ density and improves radio graphic visualization?

a. Carbon dioxide and iodine
b. Nitrous oxide and Carbon dioxide
c. Barium sulfate and iodine
d. Air and Barium

C. Barium sulfate and iodine

2

Which of the ollowing is a low osmolality nonionic contrast media?

a. lothalamate
b. Iopamidol (isovue)
c. Diatrizoate
d. Visipaque (Iodixanol)

b. Iopamidol (Isovue)

3

With regards to osmosis:

a. Water is drawn to the side of higher solute concentration
b. It is the movement of water across a semipermeable membrane
c. Water moves from an area of low solute concentration to high solute concentration
d. B and C
e. A, B and C

e. A, B and C

4

Diatrzoate Meglumine and Diatrizoate Sodium solutions are:

a. Generally used when Barium sulfate suspension is potentially harmful
b. Considered isomolar solutions
c. Preferred over Barium sulfate because of less artifact production
d. A and B
e. A and C

e. A and C

5

Selection of Contrast Media depends on:

a. Type of ionic salt
b. Iodone content
c. Osmollity
d. B and C
e. All of the above

e. All of the above

6

Which of the following drugs suggests that patients may have a thyroid problem?

a. Morphine
b. Digoxin
c. Hydrocodone
d. Levothyroxine
e. Aspirin

d. Levothyroxine

7

Anaphylactoid reactions:

a. Mimics anaphylactic reactions but requires no prior exposure to ROCM to sensitize the mast cell
b. Second exposure causes IgE to stimulate the sensitized mast cell to release chemicals
c. Are just as lethal as anaphylaxis
d. A and C
e. B and C

d. A and C

8

Naloxone is an antidote used to reverse the respiratory depressant effect from which of the following agents:

a. Acetaminophen
b. Muscle relaxants
c. Narcotics
d. Metformin

c . Narcotics

9

________ROCM are supplied in nonsalt forms

a. High osmolality ionic
b. Low osmolality nonionic
c. Low osmolality ionic
d. A and B
e. B and C

b. low osmolality nonionic

10

Iodamide Meglumine:

a. Is eliminated principally by the kidneys
b. Is an IV ROCM eliminated mainly by the hepatiobilary system
c. Has been replaced by MRI
d. All of the above

b. Is an IV ROCM eliminated mainly by the hepatiobilary system

11

Which of the following should be withheld before administering radiopaque contrast media?

a. Digoxin
b. Thrombolytics
c. Metformin
d. Norepinephrine
e. Epinephrine

c. Metformin

12

Paramagnet contrast agents consists of:

a. Gadolinum cimpounds
b. Iron compounds
c. Octafluroopropane
d. A and B
e. All of the above

d. A and B

13

Why certain tissues are considered low contrast structures considered low construct structures?

a. They tend to have a lower atomic number compared to others
b. They tend to have less mass density that some other tissues.
c. They tend to lie deeper within body cavities
d. A and B
e. B and C

d. A and B

14

If a patient receives intravascular ROCM, what kind of osmolality effects are expected:

a. A transient rise in intravascular osmotic pressure
b. Fluid from surrounding tissues is drained into vascular lumen to dilute osmotically active particles
c. Equaliziation of pressure between intravascular and extravascular spaces
d. A and B
e. All of the above

e. All of the above

15

To acheive a high iodone concentration, ROCM must:

a. Be injected at a rate equal to blow flow
b. Be injected at a rate grater than blow flow
c. Be injected slowly to limity early effects of cardiovascular system
d. A and B
e. B and C

d. A and B

16

Patients are at risk for bleeding if they receive of the following medications?

1) Antifungals
2) Anticoagulants
3) Antiplatelets
4) Thromobolytics

a. 1 and 2
b. 2 and 3
c. 1, 2 and 3
d. 2, 3 and 4
e. All of the above

d. 2, 3 and 4

17

________ works to eliminate excess fluid and sodium from bloodstream, thus decreasing overall pressure within vessels

a. NSAIDS
b. Analgescics
c. Diuretics
d. Anticoagulants

c. Diuretics

18

The contrast agents that does not dissociate into charged particles when places in solution is referred to as a/an:

a. osmotic contrast agent
b. Ionic contrast agents
c. Anaphylactic contrast agent
d. Nonionic contrast agent

d. Nonionic contrast agent

19

Osmolality:

a. controls the distribution and movement of water between body comparments
b. is the nuymber of millosmoles per kilogram of water
c. is the number of milliosmoles per liter of solution
d. A and B
e. A and C

d. A and B

20

High osmolality ionic ROCM:

a. contain three iuodine atoms per molecule and do not dissociate
b. Are referred to as ratio 1.5 media
c. Are referred to as ratio 3.0 media
d. A and B

b. Are referred to as ratio 1.5 media

21

Which of the following can cause anticoagulation (blood thining to occur?

a. Iso-smolar
b. Low osmolaity
c. High osmolality
d. A and B

c. High osmolality

22

Which of the following is not a subclass of anagesics:

a. Narcotics
b. Muscle relaxants
c. NASIDS
d. Antihistamine

d. Antihistamine

23

________ is the only isomolar contrast medium available in the US approved for use in children over 1 year of age?

a. Diatrizoate
b. Iohexol (Omnipaque)
Iodpiamide
d. Visipaque (Iodixanol)

d. Visipaque (Iodixanol)

24

The Vasodilation and flushing experience dby most paitients receiving intravascular ROCM is thought to be the result of:

a. Osmotic forces causing extravascular fluid increasing with resultant decreases in intravascular spaces
b. Endothelial swelling
c. The prescence of less fluid outside the vessels and more fluid inside the vessels
d. A and C
e. B and C

c. The presence of less fluid outside the vessels and more fluid inside the vessels

25

After ROCM administration, a patient demonstrates dehydration. This is most likely the result of:

a. Inability of the extravascular and intravascular spaces to undergo osmolar shifts
b. Osmotic diuresis due to excretion of the ROCM into urine
c. Cardiovascular dilution of hypoosmolar ROCM
d. All of the above

b. Osmotic diuresis due to excretion of the ROCM into urine

26

_______ is used to treat pain associated with inflamation:

a. NSAIDS
b. Narcotics
c. Acetaminophen
d. Antipsychotics

a. NASAIDS

27

Iodine molecules are responsible for the silhouette images projected on radio graph film becase they:

a. Absorbs photons
b. Allows more photons to pass through for projections onto radio graph
c. Act as a form of Barium preventing or slowing the dilution of osmotic particles
d. Prevent fluid in extra vascular spaces from being drawn into the bloodstream

a. Absorbs photons

28

Anaphylaxsis:

a. Requires formation of an antigen-antibody complex during a first exposure to an antigen
b. Is a type of hypersensativity reaction
c. Usually occurs with IgE stimulates the sensitized mast cell during a first exposure
d. A and B
e. All of the above

d. A and B

29

The extent to which a material is found to be poisonous is termed

a. Viscosity
b. Miscibility
c. Toxicity
d. Osmolality

c. Toxicity

30

Adverse effects elicited by ROCM can depend partially on their:

a. Blood or tissue iodine concentration
b. Osmolality
c. Calcium-chelating ability
d. A and B
e. A, B and C

e. A, B and C

31

Patients at risk for acute renal function (ARF) following IV ORCM include all of the following except those with:

a. preexisting renal compromise
b. Diabetes with concomitant renal dysfunction
c. Dehydration
d. Cirrhosis
e. A, B and C

d. Cirrhosis

32

_______ is an agent that increases the force of myocardial contraction and slows the electrical impulses through the AV node of the heart?

a. Acetaminophen
b. Metformin
c. Heparin
d. Digoxin

d. Digoxin

33

Which of the following assists in lowering BP by decreasing the pressure against which the heart must pump?

a. Anticonvulsants
b. Antihypertensives
c. Antiplatelets
d. Antihistamines

b. Antihypertensives

34

A barium enema is to be performed on a patient suspected of having perforated bowel. The contrast medium preferred for this procedure would be a/an:

a. High density barium sulfate prep
b. Low density barium sulfate prep
c. Water based iodine prep
d. Oil based iodine prep

c. Water based iodine prep

35

A patient in the CT scanner demonstrates heart failure as results of intravascular ROCM, it is most therapeutic to administer:

a. Furosemide
b. Dobutamine
c. Albuterol
d. A and B
e. None of the above

d. A and B

36

A contrast media that stops the x-ray beam from hitting the imagine receptor is termed a:

a. Negative agent
b. Positive agent
c. Viscous agent
d. Miscible agent

b. Positive agent