Ch 7 Influenza Flashcards
Communicable disease that is easily transmitted through
Coughing and sneezing of aerosolized droplets
Which is more common and produces more of a serious illness?
Influenza A
Symptoms of the flu
Fever/Chills
Cough
Sore throat
Runny or stuffy nose
Muscle or body aches
Headaches
Fatigue
Which symptom is more common in children than adults?
Vomiting and diarrhea
Benefits of the Rapid Flu A & B
Enable appropriate therapy
Facilitate prompt treatment
Some antivirals are only effective if administered within:
48 hours
Benefits of antiviral use:
Reduce costs of ancillary diagnostic procedures
Reduce healthcare costs
Decrease unnecessary antibiotic use
What nasal swabs should be used?
The ones provided in the kit
Sterile rayon, foam/polyester flexible NP swabs
What swabs can you use in place of the ones in the kit?
Sterile rayon foam/polyester or HydraFlock solid shaft swabs
Put the swab in the solution vial and rotate the swab:
3 times
Test the liquid sample from the test vial:
As soon as possible
Slowly add (drop by drop) the entire contents of the pipette (100uL) to the:
Middle pad (white pad)
Read results in window __ minutes after closing device
15
Negative sample
Blue control line in the bottom third turns pink to purple color
Blue control line turns pink/purple and a second pink/purple line appears in the middle third
Positive for Flu A
Blue control line changes to pink/purple and a second pink/purple sample line appears in the top third
Positive for Flu B
Positive Flu A is positive for:
Flu A protein antigen
Positive Flu B is positive for:
Flu B protein antigen
Potential errors are highly dependent on:
Prevalence
When disease prevalence in the community is low:
False positives may occur
When disease prevalence is high the community
False negatives may occur
Minimize false results by:
Using rapid diagnostic tests with High sensitivity and specificity
Collect specimens as early in the illness as possible (within 4/5 days)
Follow manufacturers instructions
Limitations:
A negative test
Does not exclude infection with the flu
Used in conjunction with clinical findings
Additional testing is required for any subtypes or strains
Test performance depends on:
The amount of antigens in the specimen
