MICC PRACTICE TEST CH.4

Question 1

A blood urea nitrogen level of __________ is considered outside the normal range.
A. 10.
B. 18.
C. 32.
D. All of the above.

Answer 1

C - 32.

Question 2

A 25 y/o female is scheduled for a CT scan of the sinuses. She is not absolutely certain that she is not pregnant and it has been three weeks since her last menstrual period. Which of the following is the best course of action?
A. Perform the exam immediately while she is experiencing sinus problems.
B. Postpone the procedure until she is more certain of her condition.
C. Cancel the procedure indefinitely.
D. Suggest she gets an MRI instead.

Answer 2

B - Postpone the procedure until she is more certain of her condition.

Question 3

To modify a standard CT protocol so that it is appropriate for children, which of the following should be decreased?
1. Pitch.
2. KVP.
3. MAS.

A. 1 only.
B. 1 & 2.
C. 1 & 3.
D. 2 & 3.

Answer 3

D - 2 and 3.

Question 4

Which of the following does NOT minimize the radiation dose to the patient?
A. Decreasing the distance from the X-ray tube to the pt.
B. Filtration of the low energy photons from the X-ray beam.
C. Increasing the pitch.
D. Pre-patient collimation.

Answer 4

A - Decreasing the distance from the X-ray tube to the pt.

(CLOSER YOU ARE TO THE TUBE = MORE RADIATION).

Question 5

Air in the pleural space causes the lung to collapse. This condition is known as:
A. Pleural effusion.
B. Pneumothorax.
C. Hemothorax.
D. Empyema.

Answer 5

B - Pneumothorax.

Question 6

Which medical device is used most often to deliver oxygen therapy?
A. Nasal cannula.
B. Mechanical ventilator.
C. Tracheostomy tube.
D. Venturi mask.

Answer 6

A - Nasal Cannula.

Question 7

Which of the following statements is FALSE about oximetry?
A. A pulse oximeter works by passing a beam of red & infrared light through a capillary bed.
B. Oximetry is a procedure for measuring the concentration of oxygen in the blood.
C. Oximetry is used for patient monitoring.
D. Normal oxygen saturation is 85% to 90%.

Answer 7

D - normal oxygen saturation is 85% to 90%.

(NORMAL OXYGEN SATURATION IS 95% to 100%)!!

Question 8

Which of the following tests is NOT an indication of renal function?
A. BUN.
B. Creatinine.
C. PTT.
D. A and B.

Answer 8

C. PTT.

Question 9

The human embryo/fetus is most sensitive to radiation:
A. Equally in all trimesters.
B. In the first trimester.
C. In the second trimester.
D. In the third trimester.

Answer 9

B - In the first trimester.

Question 10

Platelets are small:
A. Implants.
B. Detector elements responsible for capturing attenuated photons.
C. Cell fragments necessary for blood coagulation.
D. Catheters used for administering contrast media.

Answer 10

C - Cell fragments necessary for blood coagulation.

Question 11

A creatinine level of 3.1 mg/dl indicates the:
A. Kidneys are not removing waste products from the urine.
B. Pt is not a good candidate to receive IV contrast media.
C. Value is below the normal range.
D. All of the above.

Answer 11

B - PT is not a good candidate to receive IV contrast media.

Question 12

Which of the following statements is TRUE?
A. Respirators are not allowed in the CT suite.
B. Pulse oximeters are allowed in the CT suite.
C. The pt should be removed from the CT suite to treat cardiac arrest.
D. All of the above are true.

Answer 12

B - pulse oximeters are allowed in the CT suite.

Question 13

Which of the following values of prothrombin time are considered OUTSIDE the normal range?
A. 12 sec.
B. 20 sec.
C. 30 sec.
D. B & C.
E. All of the above.

Answer 13

D - B & C

Normal range is 10 to 14 seconds ( so really all of the above are abnormal). [all of above was not a question answer]..

Question 14

Normal BUN levels

Answer 14

5 to 25 mg/dl.

Question 15

Which of the following statements is TRUE if the pt history was taken at the time of scheduling?

1. A claustrophobic pt can arrive for the scan prepared with a prescription sedative.
2. Time can be saved the day of the exam by skipping the screening process.
3. If it has been determined that the pt has no prior illness or conditions, monitoring is unnecessary.

Answer 15

1 only.

Question 16

If the mA of a 2nd brain scan is doubled and all other parameters are not changed, the dose is:
A. Doubled.
B. Unaffected.
C. Halved.
D. Quadrupled.

Answer 16

A - Doubled.

PT dose is proportional to mAs. If rotation speed stays the same and may is doubled = pt dose is doubled as well.

Question 17

Renal function refers to which of the following organs?
A. Gall bladder.
B. Kidney.
C. Liver.
D. Spleen.

Answer 17

B - Kidney.

Question 18

Which of the following reduces pt dose at the expense of increasing the apparent noise in the image?
A. kVp.
B. Pitch.
C. Table increment.
D. MAS.

Answer 18

D - mAs.

Exposure to fewer photons decreases dose but also increases the apprentice of noise in the image.

Question 19

During a CT scan, the pt must be monitored:
A. Visually & verbally.
B. Occasionally.
C. By a nurse.
D. By a pulse oximeter.

Answer 19

A - Visually & verbally.

Question 20

Chest tubes: (Pick 1 or more)
1. are used to remove air or fluid from the pleural cavity.
2. may be looped so that they don’t get in the way during the CT scan.
3. are attached to a drainage system that needs frequent emptying.

Answer 20

1 only.

• they should NOT be looped.
• they should NOT be drained or lifted up to height of the pts chest.

Question 21

When reviewing the images from a helical CT scan, a subtle, suspicious area of possible pathology is noticed. What could be done to better visualize the area WITHOUT increasing the dose to the pt?

Answer 21

Retrospectively reconstruct the slices so that they overlap.

• if you decrease pitch = increase dose.
• thinner slices = increase dose as well.

Question 22

The diabetes drug, Metformin, is the generic name for:

Answer 22

Glucophage & Glucovance.

Question 23

Which of the following is NOT a typical indication of shock?
A. grayish skin tone.
B. convulsive seizures.
C. hypotension.
D. tachycardia.

Answer 23

B. Convulsive seizures.

Question 24

CPR must be administered to a cardiac arrest victim within a maximum of _____ minute(s) before there is a risk of brain damage.

Answer 24

4 minutes.

Question 25

_____ mm Hg is within the normal diastolic pressure range for adults.
A. 40.
B. 80.
C. 120.
D. 140.

Answer 25

B. 80

between 60 to 80!

Question 26

The most important consideration in the care of an unconscious patient is to ensure that:

Answer 26

Air passages are clear.