HEENT pt. 1 Flashcards
(33 cards)
indications of tympanometry
AOM
middle ear effusion
Eustachian tube function
confirm Tm perforation
middle ear pressure equals
atmospheric pressure normally
peak occurs when pressure in the middle ear cavity equals
pressure in the EAC
vertical axis
compliance
horizontal axis
pressure
lowest impedance equals
max compliance
Type B curve
no impedance
OM
Tm perf.
cerumen impaction
Type C curve
negative pressure
middle ear fluid
ETD
Positive rapid strep =
colonization w/ GAS
evidence of acute infection w/ GAS
Negative rapid strep =
false neg. no evidence of GAS throat culture (pos = acute infection)
rapid strep test
100% specific
65-80% sensitive
ASO Ab
appears 1 wk - 1 month after onset of infection
highest = 3 weeks after infection
by 6 months = only 30% patients have abnormal titers
Indications to use ASO ab serum test
Rheumatic fever
Glomerulonephritis
bacterial endocarditis
False positive ASO ab =
increased beta - lipoprotein levels
false negative ASO ab =
abx, steroids
ASO ab is increased with :
SABSG
strep throat acute RF bacterial endocarditis scarlet fever glomerulonephritis
interfering factors of Anti Dnase ab
antibiotics
Anti-DNase ab is increased with :
post streptococcal glomerulonephritis and acute RF
normal adult Anti DNases ab
85 todd units m/L
preschool = 60
school age = 170
2 weeks after infection of EBV, the patient develops ____ Ab.
IgM
heterophil Ab (monospot) false positives =
Burkett lymphoma
leukemia
GI cancers
SLE - systemic lupus
Heterophil Ab normal =
< 1:28 titer
Heterophil Ab negative =
30% false negatives
Heterophil Ab elevated =
mononucleosis
chronic EBV
chronic fatigue
