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Aubf Lab Finals (2024) > Fobt > Flashcards

Fobt Flashcards

1
Q

Components of a Normal Stool

A

• Bacteria
• Undigested food stuff
• Bile pigments (Urobilin/ Stercobilin)
• Water and electrolytes
• Enzymes

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2
Q

Solid/ semi-solid body waste discharged from the large
intestine through
the anus
during defecation.

A

Feces/stool

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3
Q

Enzymes in stool

A

a. Trypsin
b. Chymotrypsin
c. Aminopeptidase d. Lipase
e. Amylase

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4
Q

Volume per day

A

100-200 g/day

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5
Q

Color of stool

A

Light to dark brown

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6
Q

Odor of stool

A

Offensive

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7
Q

Why is it offensive due to

A

Indole and skatole

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8
Q

Form and consistency of stool

A

Soft and well formed

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9
Q

Reaction alkaline

A

Increase protein diet

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10
Q

reaction acidic

A

Increase vegetable, CHO, and fats in the diet

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11
Q

Abnormal color of stool

A

Black
Red
Green
Pale yellow
White
Gray

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12
Q

When stool if black

A

upper gastrointestinal bleeding, intake iron, etc.

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13
Q

When stool is red

A

bleeding in lower GIT, intake of beets, food
coloring, Rifampin and Pyridium compounds

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14
Q

When stool is gray white pale yellow

A

Bile duct obstruction, Barium intake

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15
Q

When stool is green

A

Presence of biliverdin, Oral antibiotics, Green Vegetables

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16
Q

Abnormal Variation in Consistency

A

Soft and watery
Hard and scybalous (like gout dropping)
Bulky frothy stool
Ribbon like stool
Mucus and blood streak
Rice watery stool

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17
Q

When soft and watery

A

Diarrhea

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18
Q

When hard and scybalous

A

Spastic constipation

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19
Q

When bulky frothy

A

Bile duct obstruction, Pancreatic disorders, abundant fats

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20
Q

When has Mucus and blood streak

A

Amoebic colitis, Dysentery, Malignancy

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21
Q

When rice watery stool

22
Q

Western stool chart

A

Bristol stool chart

23
Q

Type: Separate hard lumps, like nuts (hard to pass)

24
Q

Type: Sausage-shaped but lumpy

25
Type: Like a sausage but with cracks on its surface
Type 3
26
Type: Like a sausage or snake, smooth and soft
Type 4
27
Type: Soft blobs with clear-cut edges (passed easily)
Type 5
28
Type: Watery, no solid pieces. Entirely Liquid
Type 7
29
Random samples used for
cultures ova and parasites (O&P) microscopic examination for cells fats and fibers detection of blood
30
Characteristics of fecal container
cardboard containers with wax-coated interiors or plastic containers with wide openings and screwcapped tops
31
Type: Fluffy pieces with ragged edges, a mushy stool
Type 6
32
The stool collected should only be about
Thumb size Pea size Soft specimen 5-6spoonful off watery specimen
33
Patients should understand that the specimen must not be contaminated with
urine, toilet water, fibers, gauze threads, and tissue papers.
34
Preservation of Stool
•Refrigeration •Chemical Preservative
35
Chemical Preservative used
- Sodium Acetate - Formalin -Merthiolate Iodine Formaldehyde -NSS w/ glycerine -Polyvinyl Acohol
36
Different Types of Indicator Chromogens
•Gum Guaiac •Benzidine •Ortho toluidine
37
Dietary Restrictions 3 days before the examination (FOBT)
• Red Meat • Horse radish • Melons • Raw broccoli • Cauliflower •Turnip • Vitamin C
38
Hidden Blood not seen by microscopic examination
Fecal Occult Blood Testing (FOBT)
39
FOBT Normally found in small amount,
2.5ml/150g of stoool
40
FOBT IS SCREENIBG TEST FOR
Screening test for colorectal cancer and GIT
41
Principle of FOBT
- Based on the pseudoperoxidase activity of hemoglobin molecule reacting with chromogen.
42
is the trace amount of blood in feces which cannot be seen with eyes.
FOBT
43
The test cassette/strip should be used within _________ after taking out from the foil envelope.
1 hour
44
Squeeze _____ drops (about 80 uL) of sample solution to the sample well, as in the illustration.
3 drops
45
Read the test results after_____ minutes.
10 mins
46
Positive result
If control and test line are rose pink
47
Do not read results after _____ mins
15mins
48
It could be the early clinical symptom of the common
Malignant tumor Gastric cancer Colonic cancer Ulcer
49
The test devices should be stored at
4-30C
50
Specificity of test
99.40%
51
Sensitivity of test
96.88%
52
Total agreement test
99.00%

Aubf Lab Finals (2024) (4 decks)

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