Chat generated Qs Flashcards
(44 cards)
Which of the following is a type of point-of-care HIV test?
A) ELISA
B) Western Blot
C) Lateral Flow Test
D) PCR
C
What sample types can be used for point-of-care HIV tests?
A) Blood only
B) Saliva only
C) Blood, serum, plasma, urine, or saliva
D) Nasal swab only
C
A test with poor specificity is likely to result in:
A) Many false negatives
B) Many false positives
C) High positive predictive value
D) No impact on results
B
The SPIN acronym helps remember that:
A) High specificity tests are good for ruling in disease with a positive result
B) High sensitivity tests are good for ruling out disease with a negative result
C) High specificity tests always have high sensitivity
D) A negative result rules in disease
A) High specificity tests are good for ruling in disease with a positive result
Positive predictive value (PPV) increases when:
A) Prevalence of the disease decreases
B) Prevalence of the disease increases
C) Sensitivity decreases
D) Specificity decreases
B
Which COVID-19 test type detects antibodies to SARS-CoV-2, indicating past infection?
A) PCR
B) Antigen test
C) Serological test
D) Isothermal molecular test
C
When is a COVID-19 rapid antigen test most likely to produce a false negative?
A) When taken several days after symptom onset
B) When taken early in the infection
C) When the sample is from a throat swab
D) It rarely produces false negatives
B
In pharyngitis management, which sign increases the likelihood of Group A Streptococcus infection?
A) Presence of a cough
B) Absence of fever
C) Tender, enlarged lymph nodes
D) Chronic sore throat lasting more than 10 days
C
What is an advantage of using a lower cutoff value in a diagnostic test?
A) Increased specificity
B) Increased sensitivity
C) Fewer false positives
D) Decreased false negatives
B
Which of the following is a reason for poor sensitivity in a diagnostic test?
A) The test detects antibodies instead of antigens
B) The cutoff value is set too high
C) The test is performed after symptom onset
D) The prevalence of the disease is high
B
Which of the following statements about likelihood ratios is TRUE?
A) They are influenced by disease prevalence
B) A high LR+ means the test is good at ruling out disease
C) LR+ is calculated as sensitivity / (1-specificity)
D) LR- is the probability of a positive test in someone without disease
C
What happens to specificity when the cutoff for a test is increased?
A) It decreases
B) It stays the same
C) It increases
D) It has no relationship to cutoff values
C
Which type of COVID-19 test can remain positive after the person is no longer infectious?
A) Rapid antigen test
B) PCR test
C) Serology test
D) None of the above
B
C
Which insulin pen needle length is appropriate for almost all body types, including children, adults, and obese patients?
A) 10 mm
B) 8 mm
C) 6 mm
D) 4 mm
D
What is lipohypertrophy?
A) A skin infection caused by insulin
B) Scar tissue from repeated finger pricks
C) Thickened subcutaneous tissue from repeated insulin injections
D) Bruising at injection sites
C) Thickened subcutaneous tissue from repeated insulin injections
Which feature helps patients with needle anxiety by hiding the needle during injection?
A) Thin-walled technology
B) Auto-shield needles
C) Reusable pen
D) Flat injection base
B
When should insulin pens be primed?
A) Only when switching to a new pen
B) Only for cloudy insulins
C) Before each injection
D) Once daily
C
What is the maximum single injection volume before splitting an insulin dose into two injections is typically recommended?
A) 20 units
B) 30 units
C) 50 units
D) 70 units
C
How do modern glucometers detect glucose?
A) Color comparison chart
B) Enzyme-based photometric detection
C) Electrochemical amperometric detection
D) Visual estimation
C
Which enzyme is commonly used in glucometers?
A) Glucose kinase
B) Glucose oxidase
C) Lipase
D) Lactase
B
What is a limitation of urine glucose testing?
A) Detects hypoglycemia
B) Provides real-time blood glucose data
C) Provides retrospective glucose data only
D) Is more reliable than blood glucose testing
C
hich ketone body is measured by capillary blood ketone meters like the Freestyle Precision Neo®?
A) Acetoacetate
B) Acetone
C) β-Hydroxybutyrate
D) Gluconolactone
C
Which factor can cause a falsely high blood glucose reading on a glucometer?
A) High hematocrit
B) Low acetaminophen levels
C) High bilirubin levels
D) Hypotension
C