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AUBF Quizzes > [M] Quiz - Microscopic Examination of Urine > Flashcards

[M] Quiz - Microscopic Examination of Urine Flashcards

1
Q

Macroscopic screening of urine specimens is used to:
A. Provide results as soon as possible
B. Predict the type of urinary casts present
C. Increase cost-effectiveness of urinalysis
D. Decrease the need for polarized microscopy

A

C. Increase cost-effectiveness of urinalysis

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2
Q

Variations in the microscopic analysis of urine include all of the following except:
A. Preparation of the urine sediment
B. Amount of sediment analyzed
C. Method of reporting
D. Identification of formed elements

A

D. Identification of formed elements

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3
Q

All of the following can cause false-negative microscopic results except:
A. Braking the centrifuge
B. Failing to mix the specimen
C. Diluting alkaline urine
D. Using midstream clean-catch specimens

A

D. Using midstream clean-catch specimens

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4
Q

The two factors that determine relative centrifugal force are:
A. Radius of rotor head and RPM
B. Radius of rotor head and time of centrifugation
C. Diameter of rotor head and RPM
D. RPM and time of centrifugation

A

C. Diameter of rotor head and RPM

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5
Q

When using the glass-slide and cover-slip method, which of the following might be missed if the cover slip is overflowed?
A. Casts
B. RBCs
C. WBCs
D. Bacteria

A

A. Casts

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6
Q

Initial screening of the urine sediment is performed using an objective power of:
A. 4×
B. 10×
C. 40×
D. 100×

A

B. 10×

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7
Q

Which of the following should be used to reduce light intensity in bright-field microscopy?
A. Centering screws
B. Aperture diaphragm
C. Rheostat
D. Condenser aperture diaphragm

A

C. Rheostat

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8
Q

Which of the following are reported as number per lpf?
A. RBCs
B. WBCs
C. Crystals
D. Casts

A

D. Casts

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9
Q

The Sternheimer-Malbin stain is added to urine sediments to do all of the following except:
A. Increase visibility of sediment constituents
B. Change the constituents’ refractive index
C. Decrease precipitation of crystals
D. Delineate constituent structures

A

C. Decrease precipitation of crystals

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10
Q

Nuclear detail can be enhanced by:
A. Prussian blue
B. Toluidine blue
C. Acetic acid
D. Both B and C

A

D. Both B and C

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11
Q

Which of the following lipids is/are stained by Sudan III?
A. Cholesterol
B. Neutral fats
C. Triglycerides
D. Both B and C

A

D. Both B and C

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12
Q

Which of the following lipids is/are capable of polarizing light?
A. Cholesterol
B. Neutral fats
C. Triglycerides
D. Both A and B

A

A. Cholesterol

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13
Q

The purpose of the Hansel stain is to identify:
A. Neutrophils
B. Renal tubular cells
C. Eosinophils
D. Monocytes

A

C. Eosinophils

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14
Q

Crenated RBCs are seen in urine that is:
A. Hyposthenuric
B. Hypersthenuric
C. Highly acidic
D. Highly alkaline

A

B. Hypersthenuric

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15
Q

Differentiation among RBCs, yeast, and oil droplets may be accomplished by all of the following except:
A. Observation of budding in yeast cells
B. Increased refractility of oil droplets
C. Lysis of yeast cells by acetic acid
D. Lysis of RBCs by acetic acid

A

C. Lysis of yeast cells by acetic acid

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16
Q

A finding of dysmorphic RBCs is indicative of:
A. Glomerular bleeding
B. Renal calculi
C. Traumatic injury
D. Coagulation disorders

A

A. Glomerular bleeding

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17
Q

Leukocytes that stain pale blue with Sternheimer-Malbin stain and exhibit brownian movement are:
A. Indicative of pyelonephritis
B. Basophils
C. Mononuclear leukocytes
D. Glitter cells

A

D. Glitter cells

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18
Q

Sometimes mononuclear leukocytes are mistaken for:
A. Yeast cells
B. Squamous epithelial cells
C. Pollen grains
D. Renal tubular cells

A

D. Renal tubular cells

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19
Q

When pyuria is detected in a urine sediment, the slide should be checked carefully for the presence of:
A. RBCs
B. Bacteria
C. Hyaline casts
D. Mucus

A

B. Bacteria

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20
Q

Transitional epithelial cells are sloughed from the:
A. Collectng duct
B. Vagina
C. Bladder
D. Proximal convoluted tubule

A

C. Bladder

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21
Q

The largest cells in the urine sediment are:
A. Squamous epithelial cells
B. Urothelial epithelial cells
C. Cuboidal epithelial cells
D. Columnar epithelial cells

A

A. Squamous epithelial cells

22
Q

A squamous epithelial cell that is clinically significant is the:
A. Cuboidal cell
B. Clue cell
C. Caudate cell
D. Columnar cell

A

B. Clue cell

23
Q

Forms of transitional epithelial cells include all of the following except:
A. Spherical
B. Caudate
C. Convoluted
D. Polyhedral

A

C. Convoluted

24
Q

Increased transitional cells are indicative of:
A. Catheterization
B. Malignancy
C. Pyelonephritis
D. Both A and B

A

D. Both A and B

25
Q

A primary characteristic used to identify renal tubular epithelial cells is:
A. Elongated structure
B. Centrally located nucleus
C. Spherical appearance
D. Eccentrically located nucleus

A

D. Eccentrically located nucleus

26
Q

After an episode of hemoglobinuria, RTE cells may contain:
A. Bilirubin
B. Hemosiderin granules
C. Porphobilinogen
D. Myoglobin

A

B. Hemosiderin granules

27
Q

The predecessor of the oval fat body is the:
A. Histiocyte
B. Urothelial cell
C. Monocyte
D. Renal tubular cell

A

D. Renal tubular cell

28
Q

A structure believed to be an oval fat body produced a Maltese cross formation under polarized light but does not stain with Sudan III. The structure:
A. Contains cholesterol
B. Is not an oval fat body
C. Contains neutral fats
D. Is contaminated with immersion oil

A

A. Contains cholesterol

29
Q

The finding of yeast cells in the urine is commonly associated with:
A. Cystitis
B. Diabetes mellitus
C. Pyelonephritis
D. Liver disorders

A

B. Diabetes mellitus

30
Q

The primary component of urinary mucus is:
A. Bence Jones protein
B. Microalbumin
C. Uromodulin
D. Orthostatic protein

A

C. Uromodulin

31
Q

The majority of casts are formed in the:
A. Proximal convoluted tubules B. Ascending loop of Henle
C. Distal convoluted tubules
D. Collecting ducts

A

C. Distal convoluted tubules

32
Q

Cylindruria refers to the presence of:
A. Cylindrical renal tubular cells
B. Mucus-resembling casts
C. Hyaline and waxy casts
D. All types of casts

A

D. All types of casts

33
Q

A person submitting a urine specimen after a strenuous exercise routine normally can have all of the following in the sediment except:
A. Hyaline casts
B. Granular casts
C. RBC casts
D. WBC casts

A

D. WBC casts

34
Q

Before identifying an RBC cast, all of the following should be observed:
A. Free-floating RBCs
B. Intact RBCs in the cast matrix
C. A positive reagent strip blood
D. All of the above

A

D. All of the above

35
Q

WBC casts are associated primarily with:
A. Pyelonephritis
B. Cystitis
C. Glomerulonephritis
D. Viral infections

A

A. Pyelonephritis

36
Q

The shape of the RTE cell associated with RTE casts is primarily:
A. Elongated
B. Cuboidal
C. Round
D. Columnar

37
Q

When observing RTE casts, the cells are primarily:
A. Embedded in a clear matrix
B. Embedded in a granular matrix
C. Attached to the surface of a matrix
D. Stained by components of the urine filtrate

A

C. Attached to the surface of a matrix

38
Q

The presence of fatty casts is associated with:
A. Nephrotic syndrome
B. Crush injuries
C. Diabetes mellitus
D. All of the above

A

D. All of the above

39
Q

Nonpathogenic granular casts contain:
A. Cellular lysosome
B. Degenerated cells
C. Protein aggregates
D. Gram-positive cocci

A

A. Cellular lysosome

40
Q

All of the following are true about waxy casts except they:
A. Represent extreme urine stasis
B. May have a brittle consistency
C. Require staining to be visualized
D. Contain degenerated granules

A

C. Require staining to be visualized

41
Q

Observation of broad casts represents:
A. Destruction of tubular walls
B. Dehydration and high fever
C. Formation in the collecting ducts
D. Both A and C

A

D. Both A and C

42
Q

All of the following contribute to urinary crystals formation except:
A. Protein concentration
B. pH
C. Solute concentration
D. Temperature

A

A. Protein concentration

43
Q

The most valuable initial aid for identifying crystals in a urine specimen is:
A. pH
B. Solubility
C. Staining
D. Polarized microscopy

44
Q

Crystals associated with severe liver disease include all of the following except:
A. Bilirubin
B. Leucine
C. Cystine
D. Tyrosine

A

C. Cystine

45
Q

All of the following crystals routinely polarize except:
A. Uric acid
B. Cholesterol
C. Radiographic dye
D. Cystine

A

D. Cystine

46
Q

Casts and fibers usually can be differentiated using:
A. Solubility characteristics
B. Patient history
C. Polarized light
D. Fluorescent light

A

C. Polarized light

47
Q

Match the following crystals seen in acidic urine with their description/identifying characteristics:

  1. Envelopes
  2. Thin needles
  3. Yellow-brown, Whetstone
  4. Pink sediment
  5. Ovoid

____ Amorphous urates
____ Uric acid
____ Calcium oxalate monohydrate
____ Calcium oxalate dihydrate

A

4, 3, 5, 1

48
Q

Match the following crystals seen in alkaline urine with their description/identifying characteristics:

  1. Yellow granules
  2. Thin prisms
  3. “Coffin lids”
  4. Dumbbell shape
  5. White precipitate
  6. Thorny apple

____ Triple phosphate
____ Amorphous phosphate
____ Calcium phosphate
____ Ammonium biurate
____ Calcium carbonate

A

3, 5, 2, 6, 4

49
Q

Match the following abnormal crystals with their description/identifying characteristics:

  1. Bundles after refrigeration
  2. Highly alkaline pH
  3. Bright yellow clumps
  4. Hexagonal plates
  5. Flat plates, high specific gravity
  6. Concentric circles, radial striations
  7. Notched corners
  8. Fine needles seen in liver
    disease

____ Cystine
____ Tyrosine
____ Cholesterol
____ Leucine
____ Ampicillin
____ Radiographic dye
____ Bilirubin

A

4, 8, 7, 6, 1, 5, 3

50
Q

Match the following types of microscopy with their descriptions:

  1. Indirect light is reflected off the object
  2. Objects split light into two beams
  3. Low-refractive-index objects may be overlooked
  4. Three-dimensional images
  5. Forms halo of light around object
  6. Detects electrons emitted contrast from objects
  7. Detects specific wavelengths of light emitted from objects

____ Bright-field
____ Phase
____ Polarized
____ Dark-field
____ Fluorescent
____ Interference

A

3, 5, 2, 1, 7, 4

AUBF Quizzes (11 decks)

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