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[2S] CC LAB > glucometer > Flashcards

glucometer Flashcards

1
Q

point-of-care test device used for glucose monitoring close to the site of patient care

A

glucometer

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2
Q

Blood from a capillary puncture is introduced to a test strip with enzymes such as ___, _____, or ______

A

glucose oxidase, hexokinase, or glucose dehydrogenase

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3
Q

using a glucometer, glucose is detected using _______ or _____ methods.

A

reflectance or electrochemical .

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4
Q

T/F Glucometers are in vitro diagnostic test systems that can be used in the home, in a physician’s office, or at the bedside in hospitals.

A

T

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5
Q

purpose of wiping the first drop of blood after pricking the finger

A

remove any contaminants or tissue fluids that may affect the glucose reading.

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6
Q

Odd One Out: Affect whole blood glucose readings in a glucometer

A) Hematocrit
B) Analysis technique
C) Plasma glucose levels
D) Sample timing (fasting vs. postglucose load)

A

C) Plasma glucose levels – Whole blood gives 10-15% lower readings compared to plasma, but plasma glucose levels are not directly used in the point-of-care test.

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7
Q

specimen used in point-of-care glucose monitoring devices like a glucometer

A

Whole blood glucose specimens

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8
Q

T/F The depth for a finger prick should not go beyond 2.4 mm, and a depth of 2.2 mm is commonly used.

A

T

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9
Q

T/F: Glucometers can be used to monitor both hypoglycemia and hyperglycemia in diabetic patients.

A

T

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10
Q

materials needed for blood glucose determination using a glucometer

A

Cotton/alcohol wipes, glucometer device, test strips, lancing device, lancet, and PPE (gloves).

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11
Q

Which of the following steps in the glucometer procedure is incorrect?
A) Sterilize the ring or middle finger before pricking.
B) Use the first drop of blood for testing.
C) Wait for the finger to dry after sterilizing it.
D) Insert the test strip into the meter before pricking the finger.

A

B) Use the first drop of blood – should be wiped off before testing.

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12
Q

primary advantage of using a glucometer

A

immediate results without need for lab transpo

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13
Q

T/F: Glucometers work well within clinical patient flow and can provide results quickly without requiring laboratory processing.

A

T

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14
Q

type of specimens can be analyzed by a glucometer

A

whole blood, urine, and other body fluids.

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15
Q

T/F: Glucometers allow for the analysis of small blood volumes and are integrated into clinical patient flow.

A

T

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16
Q

disadvantage of using a glucometer in comparison to traditional laboratory tests

A

generally more expensive

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17
Q

T/F Since anyone can run the analysis, the quality of glucometer results are sometimes questionable

A

T - leads to inconsistencies in quality.

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18
Q

Odd One Out: Common disadvantage of using a glucometer
A) Expensive compared to lab tests
B) Immediate results without lab transportation
C) Difficulties with regulatory compliance and billing
D) Lack of formal education/experience of staff

A

B) Immediate results without lab transportation – advantage

19
Q

purpose of quality control (QC) tests for glucometers like the ACCU-CHEK® Performa meter

A

verify the reliability of results, the integrity of test strips and QC solutions, and accuracy of the operator’s technique.

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20
Q

when should a quality control test be performed for a glucometer

A
  • Every 24 hours
  • Before patient testing if the last QC test was more than 24 hours ago
  • When opening a new container of test strips or QC solutions
  • If the meter is dropped
  • If glucose result is inconsistent with the patient’s clinical presentation.
21
Q

T/F: It’s okay to not perform a quality control test if a new vial of QC solutions or test strips is opened.

A

F - not ok .

22
Q

supplies needed to perform a quality control test on the ACCU-CHEK® Performa meter

A

Glucometer, test strip container, and Quality Control solution vials 1 and 2.

23
Q

how long can the QC solutions be used after opening the vial

A

until the expiry date on the vial label or 90 days from the date they were first opened

*whichever comes first

24
Q

Odd One Out: Inserting a test strip for QC testing
A) Insert the test strip into the meter in the direction of the arrows
B) Compare the code number on the screen with the code on the test strip container
C) Leave the test strip container open to access more strips quickly

A

C) Leave the test strip container open – close the container immediately to protect remaining strips from humidity

25
Q

The QC solution must be mixed by inverting the vial __ times before applying it to the test strip.

A

5

26
Q

When enough QC solution is applied to test strip, a/an ___ symbol flashes on the screen, indicating that the meter is analyzing the QC solution.

A

hourglass

27
Q

to specifiy level of QC solution used in the test, use the ____ button to select whether you used QC solution vial 1 or 2

A

forward arrow

28
Q

Odd One Out: Quality control test?
A) Discard the first drop of QC solution
B) Invert the QC vial 5 times to mix the solution
C) Use the QC solution even if it has expired, as long as the strips are not expired

A

C) Use the QC solution even if it has expired – teh ?????

29
Q

T/F: Glucometers can be used to monitor both hypoglycemia and hyperglycemia in diabetic patients.

A

T

30
Q

The word OK alternates with the result on the screen after a QC test signifies that results is within ________

A

acceptable range

31
Q

when the word Err alternates with the result on the screen after a QC test, it means that the result is ?

A

out of range

32
Q

T/F: If the QC test result remains outside the acceptable range after two attempts, you should continue using the meter for patient testing.

A

F - should not use; refer the laboratory test.

33
Q

Limit of QC results outside acceptable range before taking action

A

2

34
Q

what to do if the QC test fails after two attempts and the result is out of range?

A

contact the POCT lab for troubleshooting assistance and refer patient tests to the laboratory.

35
Q

Odd One Out: Documenting QC results
A) Note the result if it is within the acceptable range
B) Ignore the result if it says “Err”
C) Document the result in the Point of Care Quality Assurance & Maintenance Record
D) Repeat the QC test if the result is out of range

A

B) Ignore the result if it says “Err” – identify and correct any errors if the result is out of range.

36
Q

to what colored cap should you securely place back QC solution vial 1 after finishing the QC test

A

Grey

37
Q

to what colored cap should you securely place back QC solution vial 2 after finishing the QC test

A

white

37
Q

T/F: Patient testing can be done after completing one QC test with an OK result.

A

F – Patient testing cannot be done until both levels of QC (using vials 1 and 2) are performed and OK displays for both tests

37
Q

three considerations for system accuracy in glucometer testing

A
  • Effectiveness of current technology for monitoring diabetes
  • Recommendations from diabetes researchers and regulatory guidelines
  • State-of-the-art blood-glucose monitoring technology
37
Q

Odd One Out: Requirement for system accuracy in glucometer testing
A) Current technology for diabetes monitoring
B) Recommendations from diabetes researchers
C) Blood-glucose monitoring technology innovations
D) Low cost of the system

A

D) Low cost of the system – not a requirement for system accuracy; it is based on technology and recommendations.

38
Q

main goal of performing QC tests before patient testing

A

ensure the accuracy and reliability of the glucometer results

38
Q

how often should QC tests be performed if patient testing is done regularly

A

every 24 hours or immediately before patient testing if it has not been done within the last 24 hours

38
Q

T/F: Both QC solution vials (1 and 2) must pass the QC test before patient testing can proceed.

A

T

[2S] CC LAB (7 decks)

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