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1.
Which of the following
compromises the integrity of the slide?
heat
light
volatile chemicals
refrigeration
all of the above
 
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2.
Which of the following
are considered appropriate specimens:
sputum
gastric fluid
meconium
stool only
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3.
Which colors should be
read as a positive result??
blue
green
blue-green
a
& c
all of the above
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4.
The principle behind
the guaiac test is based on the oxidation of 'guaiac' (an
active ingredient) by hydrogen peroxide (in developer)
producing a blue or blue-green color, a reaction that occurs
only if blood is present in the sample (blood acts as the
catalyst). In what part of the testing system is the guaiac
component found ?
in
the DEVELOPER solution, which is mostly composed of methanol,
hydrogen peroxide and guaiac.
in the white filter paper of
the guaiac CARD.
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5.
You are the nurse on J14C
and a resident from Internal Medicine is in a hurry to get the
physical exam on Mr. Jones completed. He gets a sample for the
Occult card, smears the sample on the filter paper and in
handing it to you, says "put the developer on NOW".
Ideally, you should respond:
"Sure
will after I let it soak into the filter paper for 3 minutes
minimum per the policy and manufacturer"
by shutting the card on the
application side and opening the back of the card where you
know you are supposed to add the developer and then
immediately drop on the developer.
By thinking about the
"3 - 5 minute rule" but decide to not incur the
wrath of the resident by hesitating to follow his orders, so
you immediately add the developer to the card
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6.
The physician wants the
patient to bring 3 Occult cards back into clinic after they
have a chance to add the specimens (at home). You tell the
patient when you give them the supplies:
"collect
a specimen on three different (consecutive) days"
"put the date on the
front of the card so we know when you collected the
specimen"
"it's ok to eat chicken
and pork during the time frame you are collecting specimens,
as long as the meat is fully cooked"
all
of the above
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7.
In counseling patients
prior to having them collect specimens at home for Occult
Blood, it is recommended that they avoid:
Peptobismol
NSAID's (non-steroidal
anti-inflammatory drugs)
High peroxidase
activity-containing vegetables (melons, radishes, cauliflower).
All
of the above
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8.
The guaiac test is
considered a screening test; results obtained cannot be
considered conclusive evidence of the presence or absence of
gastrointestinal bleeding.
TRUE
FALSE
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9.
Peroxidase from fruits
and vegetables may cause FALSE POSITIVE results.
TRUE
FALSE
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10.
Aspirin and NSID's may
cause irritation or bleeding of the gastrointestinal tract
causing FALSE POSITIVE results. Their use should be
discontinued at least 7 DAYS prior to doing a guaiac test.
TRUE
FALSE
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