Quiz-2 - Urinalysis PDF

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Urinalysis...

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Quiz 2:

Question 1

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0 out of 1 points

After an extremely busy night collecting and performing STAT tests, you find a routine urine specimen in the drop basket. You check the collection time and note that the specimen is over 2 hours old. Which of the following statements is true regarding the integrity of the specimen: Answer A. s: Bacteria may have disintegrated because of an increased ammonia

level B.

Physical parameters, including odor and clarity, are unaffected by delayed testing C.

Chemical constituents may be altered, producing invalid results D.

pH levels may be falsely lowered because of bacterial conversion of urea to ammonia

Question 2

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0 out of 1 points

An ammonia-like odor is characteristically associated with urine from patients who: Answer A. s: Have an infection with Proteus

species B.

Have a yeast infection C.

Are diabetic D.

Have hepatitis

Question 3

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1 out of 1 points

Urine osmolality is related to: Answer A. s: Filtration B.

pH C.

Specific Gravity D.

Volume

Question 4

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0 out of 1 points

Fi r s tmor ni ngs pec i menspr ov i det hei dealspecimen f oral l oft hef ol l owi ngr easonsex cept : Answer A.

s:

Concentrated specimen B.

Acidic C.

Incubated 8 hours D.

Reduced possibility of concentration

Question 5

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1 out of 1 points

For the collection of a random clean-catch urine specimen, it is important to instruct the patient to: Answer A. s: Collect urine on 3 different days 1 week apart B.

Fast for 12 hours before urine collection C.

Drink 24-32 oz. of water each hour 2 hours before urine collection D.

Refrain from any exercise activity 5 days before each collection

Question 6

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1 out of 1 points

The clarity of a urine sample should be determined: Answer A. s: Following thorough mixing of the

solution B.

Using glass tubes only; never plastic C.

After the addition of sulfosalicylic acid D.

After the specimen cools to room temperature

Question 7

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1 out of 1 points

Urochrome is a lipid-soluble pigment that: Answer A. s: Is excreted in urine, imparting the characteristic

yellow color B.

Is excreted in the urine on a constant basis C.

Darkens on exposure to light

D.

A and B E.

A, B, and C

Question 8

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7 out of 7 points

Match the urine colors that may result from the following causes/conditions:

Question

Oxidation of bilirubin to biliverdin (C ) Breakdown of heme to porphyrin products (A) Hemoglobin from RBCs ( D) Increased amounts of bilirubin (E) Myoglobin in fresh urine, or oxidized blood (B ) Presence of melanin, or presence of homogentisic acid due to inability to break it down (F ) Use of an over-the-counter drug for the purpose of pain relief from a urinary tract infection (UTI) (G )

All Answer Choices A.

Pink/Wine B.

Brown C.

Green D.

Red E.

Dark amber F.

Black G.

Orange (bright)

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Question 9 1 out of 1 points

The refractive index of a solution is affected by all of the following except: Answer A. s: Concentration of the solution

B.

Temperature of the solution C.

Light scattering by particles in the solution D.

Wavelength of light used

Question 10

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1 out of 1 points

Timed urine collections can be categorized into all of the following types except: Answer A. s: Predetermined length of time B.

Specific time of day C.

Predetermined length plus specific time of day D.

All are correct

Question 11

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1 out of 1 points

The presence of which substance is considered iatrogenic? Answer A. s: Squamous epithelial

cells B.

Sperm and prostate fluid C.

Fecal matter D.

Radiographic dye

Question 12

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1 out of 1 points

While processing a urine specimen, the technician notes yellow foam that does not dissipate upon standing. He suspects the presence of: Answer A. s: Bilirubin B.

Protein and bilirubin C.

Biliverdin and urochrome D.

Urochrome and protein

Question 13

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1 out of 1 points

The urine of a patient who has been on a medical fast for the past several weeks may smell: Answer A. s: Sweet and

fruity B.

Ammonialike C.

Faintly aromatic D.

Pungent and foul

Question 14

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1 out of 1 points

Upon dipping the chemical reagent strip into a urine specimen, it is noted that that the entire reagent strip is orange. The presence of _____________ is suspected: Answer A. s: Homogentisic acid B.

Phenoazopyridine ( Azo) C.

Amitriptyline D.

Metronidazole

Question 15

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1 out of 1 points

Clarity in a freshly voided urine from a healthy individual is: Answer A. s: Clear B.

Hazy C.

Slightly cloudy D.

All of the above

Question 16

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0 out of 1 points

The patient is a 3-month old infant with a possible bladder infection. The best method of urine collection for routine urine analysis and culture is: Answer A.

s:

Random B.

Sterile pediatric bag C.

Clean catch using a pediatric bag D.

Suprapubic or catheterized urethral specimen

Question 17

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7 out of 7 points

Match the following statements with the urine preservative that best fits the description given (Note - Each may be used more than once):

Question

Interferes with the chemical analysis portion because it acts as a reducing agent: (B) Main purpose is to preserve urine sediment for microscopic analysis: (C ) Most common type of preservative used: (E ) Maintains integrity of urine specimen for 24-72 hours for routine physical, chemical, and microscopic analysis and for culture purposes. Amount used depends on the volume of specimen: (A ) Interferes with protein precipitation tests and inhibits growth of bacteria and yeast: (D ) Interferes with the pH of the specimen: (A ) Maintains integrity of urine specimen for up to 24 hours for routine physical, chemical, and microscopic analysis and for culture purposes. Easiest method: (E )

All Answer Choices A.

Boric acid B.

Formalin C.

Formalin and Thymol D.

Thymol E.

Refrigeration

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Question 18 1 out of 1 points

Which substance found in the urine is considered pathological? Answer A. s: Yeast B.

Spermatozoa C.

Powder D.

Epithelial cells from skin contamination...