Tonsillitis, adenoids and glue ear Flashcards

1
Q

embryologically. at what week do they tonsils begin to develop?

A

week 8

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2
Q

emryologically, when do the crypts of the tonsils begin to form?

A

3-6 months

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3
Q

at how many weeks into gestation does the adenoids develop?

A

16 weeks

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4
Q

what is Waldeyer’s ring?

A

ring of lymphoid aggregation in the subepithelial layer of oropharynx and nasopharynx

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5
Q

where is the adenoid?

A

positioned in the midline of the posterior wall of the nasopharynx

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6
Q

what is the fossa of Rosenmuller?

A

the space created lateral to the adenoid and posteromedial to the eustachian tube orifice.

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7
Q

what is inside the fossa of Rosenmuller?

A

Gerlach’s tonsil

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8
Q

what is the luminal surface of the tonsil covered by?

A

stratified squamous epithelium

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9
Q

what separates the base of the tonsil from underlying muscle?

A

dense collagenous hemi-capsule

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10
Q

what does the surface of the tonsil have all over it?

A

deep crypts

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11
Q

what is different about the surface of the adenoids compared to the tonsils?

A

adenoids have deep folds and few crypts and adenoids are covered with pseudostratifed columnar epithelium

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12
Q

what is underneath the pseudostratified columnar epithelium on the adenoids?

A

stratified squamous layer

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13
Q

what is underneath the stratified squamous layer of adenoids?

A

a transitional layer

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14
Q

what layer of the adenoids thickens with chronic infection?

A

the stratified squamous layer

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15
Q

what is the transitional layer of the adenoids responsible for?

A

antigen processing

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16
Q

what is the most common viruses that cause acute tonsillitis?

A

EBV, rhinovirus, influenza, parainfluenza, enterovirus, adenovirus

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17
Q

what % of acute tonsillitis is bacterial?

A

5-30%

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18
Q

most common bacterial cause of acute tonsillits?

A

group A beta-haemolytic strep (strep.pyogenes)

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19
Q

symptoms of a viral tonsillitis?

A
  • malaise
  • sore throat, mild analgesia requirement
  • temperature
  • able to undertake near normal activity
  • possible lymphadenopathy
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20
Q

how long does a viral tonsillitis typically last?

A

3-4 days

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21
Q

symptoms of a bacterial tonsillitis?

A

systemic upset, fever, painful swallowing, bad breath, unable to work/school, lymphadenopathy,

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22
Q

how long does a bacterial tonsillitis last?

A

about 1 week

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23
Q

what is the Centor Criteria used for?

A

differentitating bacterial tonsillitis from viral

24
Q

what is the 4 features that suggest a bacterial tonsillitis over a viral tonsillitis?

A
  • history of fever
  • tonsillar exudates
  • tender anterior cervical adenopathy
  • absence of cough
25
what is the age aspect in the modified centor criteria?
add one point if they are under 15. subtract one point if they are over 44
26
if a patient has 0-1 points on the centor criteria, how should they be treated?
no antibiotic
27
if a patient has 2-3 points in the centor criteria how should they be treated?
should receive an antibiotic if symptoms progress
28
if a patient has 4-5 points on the centor criteria, how should they be treated?
treat empirically with an antibiotic
29
what antibiotic should be given to treat tonsillitis and at what dose for how long?
penicillin, 500mg 4 times a day for 10 days
30
how many episodes of tonsillitis must a patient have in in the preceding year to be considered for a tonsillectomy?
seven or more
31
how many episodes of tonsillitis over the preceding 2 years must a patient have to be considered for a tonsillectomy?
5 or more
32
how many episodes of tonsillitis over the preceding 3 years must a patient have to be considered for a tonsillectomy?
three or more
33
how many days post- tonsillectomy does the pain peak?
day 5
34
what causes a peritonsilar abscess?
bacteria gets between the muscle and tonsil and area fills with pus
35
what is the classic history of a peritonsilar abscess?
- unilateral throat pain and pain on swallowing | - trismus
36
what is trismus?
inability to open the mouth due to spasm of the facial muscles
37
how long after tonsillitis does a peritonsillar abscess typically occur?
3-7 days
38
what might be seen on examination of the oral cavity in a peritonsillar abscess?
- medial displacement of tonsil and uvula | - concavity of palate lost
39
what is the treatment for a peritonsilar abscess?
aspiration and antibiotics
40
what is the other name for a peritonsilar abscess?
quinsy
41
what virus causes glandular fever?
ebstein-barr virus (EBV)
42
systemic features of glandular fever out-with the oral cavity?
- generalised lymphadenopathy | - hepatosplenomegaly
43
signs of glandular fever in the oral cavity?
- gross tonsillar enlargement with membranous exudate | - palatal petechial haemorrhages
44
what can be seen in the peripheral blood in glandular fever?
atypical lymphocytes
45
what is the diagnostic test for glandular fever?
-positive monospot test or clotted blood EBV IgM
46
what would happen if someone with glandular fever was given amoxicillin?
they would get a widespread red rash
47
what are the non-neoplastic causes of unilateral tonsillar enlargement?
acute infection, chronic infection, hypertrophy, congenital
48
what is otitis media with effusion (glue ear)?
inflammation of the middle ear accompanied by accumulation of fluid without the symptoms and signs of acute infection
49
how does glue ear affect the TM and hearing?
impairs TM mobility and there is hearing loss
50
is glue ear more common in males or females?
males
51
how can glue ear affect a childs school performance and behaviour?
they can be deaf, so they cant understand instructions
52
does glue ear cause ear pain?
no
53
on examination, what are the signs of glue ear?
- TM retraction - reduced TM mobility - altered TM colour - visible fluid
54
what would you expect in glue ear when doing the tuning fork tests?
conductive HL
55
if there is an airborne gap in the audiometry, what does this suggest?
conductive hearing loss