Infectious disease Flashcards

1
Q

Fine needle vs core needle aspirate?

A

Fine needle = cytological info

Core needle = histological info*

  • done for breast tissue histological analysis for breast lesions
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2
Q

Family hx of breast cancer conditions for referral to secondary care?

A

BC in first degree male relative!

BC in first degree relative under 40

Bilateral BC in first degree relative under 50

BC in 2 first degree relatives

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3
Q

What is a triple assessment of the breast for BC?

A

Clinical exam
Mammography
Core needle biopsy

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4
Q

Ductal carcinoma mammogram findings

A

areas of calcification

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5
Q

which Breast cancer causes pagets disease of breast (eczema like feeling of nipple with lump behind it)

A

Ductal carcinoma in situ

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6
Q

if someone has HER2 receptor positive breast cancer?

A

Can treat with a biologic
= trastuzumab

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7
Q

if someone is on trastuzumab for breast cancer what needs to be monitered?

A

Cardiac function

cardiotoxicity causing drug

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8
Q

TNM for breast cancer?

A

Small tumours under 2cm in size score T1.

If cancerous cells are found in 4-9 local lymph nodes (axillary or internal mammary), an N2 score is given. If fewer than 4 are affected, then the score is N1. If more than 9, or it has spread to supra- or infra-clavicular lymph nodes, the score will be N3.

If no metastasis is found, the score will be M0. If there is metastasis, the score will be M1.

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9
Q

every px who has a wide local excision of breast cancer should be offered wat?

A

adjuvant radiotherapy

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10
Q

How does candida albicans affect the skin?

A

Itchy rash in folds e.g. sub-mammary, groin, axilla

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11
Q

How can a baby get congenital herpes simplex virus?

A

transmission through vaginal birth within 6 weeks that the mother had infection, mum should do a c section and take intra-partum IV acyclovir

Baby will have vesicular lesions around skin, eyes, oral mucosa, can have encephalititis and sepsis

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12
Q

Most common cause of encephalitis

A

Herpes simplex virus (1)

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13
Q

Baby with well defined circular papules, target shaped lesions of 3 concentric rings of different colours

starts at palms and spreads out, what is it

A

Erythema multiforme (allergic reaction to infection), caused by HSV

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14
Q

px has painful ulcers on vulva, but swabs and PCR for HSV are both negative

what next?

A

probable diagnosis is still genital HSV so

if it is negative PCR and swab (e.g. atypical ulcers) do anti-HSV antibodies to confirm diagnosis

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15
Q

pregnancy and HSV?

A

Offer patient acyclovir and elective C section

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16
Q

young patient with hx of eczema is pyrexic, fluid filled blisters which break open to leave shallow sores on skin?

A

Herpes simplex virus caused Eczema herpeticum

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17
Q

an USS of a px showing fluid and air accumulating between fascia in their right thigh?

A

necrotising fasciitis

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18
Q

How does fourniers gangrene present?

A

e.g. presented with severe testicular pain, a day ago, dramatically worsened

very unwell, with hx of diabetes/HIV etc

oedematous testicle, erythema with poorly defined margins

palpation impossible due to pain

cremasteric reflex is fine

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19
Q

px with pneumonia and shingles?

A

Primary HIV infection (leads to recurrent shingles/molluscum contagiosum/pneumocystis jirovecii pneumonia)

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20
Q

hiv diagnosis/screening

A

combination test

  • tests for P24 antigen +
  • antibodies against HIV
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20
Q

hiv diagnosis/screening

A

combination test

  • tests for P24 antigen +
  • antibodies against HIV
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21
Q

TRALI acute transfusion reaction?

A

Transfusion related acute lung injury

basically non cardiogenic pulmonary oedema

due to stuff in new blood activating neutrophils in pulmonary vascualture increasing permeability = oedema

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22
Q

TRALI vs TACO?

A

Transfusion related acute lung injury

vs

Transfusion associated circulatory overload

  • too much transfusion in a px with a heart failure causing pulmonary oedema LIKE TRALI except the px will be hypertensive not hypotensive
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23
Q

breast mastitis organisms

A

Staph A

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24
Q

mastitis risk factors?

A

Smoking

breast feeding

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25
Q

breast mastitis ix?

A

USS

Diagnostic needle aspiration drainage = prurulent fluid indicates abscess

26
Q

breast cyst and cancer link\?

A

there is one, a complex cyst can develop

27
Q

most common breast cancer?

A

Invasive lobular carcinoma

28
Q

BRCA1 gene?

A

onchromosome 17

70% will develop breast cancer by aged 80

50% will develop ovarian cancer

Increased risk of bowel and prostate cancer

29
Q

BRCA2 gene?

A

on chromosome 1

60% will develop breast cancer by aged 80

Around 20% will develop ovarian cancer

30
Q

NHS screening programme breast cancer?

A

mammogram every 3 years for women 50-70 yrs old

31
Q

mx for candidiasis?

A

Topical antifungal e.g. clotrimazole, miconazole, nystatin

only for severe systemic or vaginal - oral fluconazole

32
Q

genital herpes caused by HSV2 sx?

A

dysuria + pruritus

ulcers

33
Q

what is gingivostomitis|?

A

primary infection of herpes

erythema and painful ulcers on perioral skin and oral mucosa

34
Q

what conditions are linked to HIV?

A

May present with maculopapular rash

oral ulcers
TB
Candidiasis
shingles

35
Q

what is oesophaheal candidiasis?

A

an aids defining illness

36
Q

what does oral thrush present as? (candidiasis)

A

White plaques that can be scrapped off and a cottony feeling

37
Q

How does HIV seroconversion time present?

A

Glandular fever like, 3-12 weeks after the infection

can get maculopapular rash

38
Q

how to investigate HIV?

A

combination test HIV p24 + HIV antibody

  • the p24 shows up earlier in disease
39
Q

When to give co-trimoxazole for HIV?

A

CD4 tells immune status, if <200

40
Q

Necrotising fasciitis summary?

A

2 types

type 2 = strep pyogenes
will present like worsening cellulitis with extreme pain

do surgical exploration before cultures

41
Q

What is the sepsis 6

OBAFLU

A

administer Oxygen
take Blood culture
give broad spec Abx
give iv Fluid
measure serum Lactate
measure hourly Urine

42
Q

where can varicella zoster become dormant in the body after chicken pox?

A

basal root ganglia

trigeminal ganglia

43
Q

chicken pox skin affects?

A

vesicular rash 1st appearing centrally then to limbs

vesicles on mucous membranes in nasopharynx

itchy

44
Q

ramsay hunt syndrome - varicella zoster - summary

A

reactivation occurs in the geniculate ganglion of the facial nerve

causes ear pain first, then unilateral facial palsy + vesicular rash around ear

Mx with oral aciclovir and corticosteroids (prednisolone).

45
Q

Herpes Zoster Ophthalmicus

A

Reactivation of varicella zoster in ophthalmic division of the trigeminal nerve resulting in vesicular rash around eye and hutchinson’s sign - rash on tip of nose

urgent opthal review + oral antivirals

46
Q

which viral illnesses does viral exanthema present in?

A

Chicken pox
Rubella
measles

usually on trunk

can give emollients to reduce itch

47
Q

Where does multi-organ dysfunction syndrome come in?

A

sepsis -> severe sepsis -> MODS

48
Q

What primary causes can result in MODS?

A

Infection

injury

hypoperfusion

hypermetabolism

49
Q

multi organ dysfunction can come in 4 stages each with worsening features which are?

A

Stage 1 - mild resp alkalosis, oliguria, hyperglycaemia

stage 2 = tachypnoea, hypoxaemia, liver dysfunction, haem abnormalities

stage 3 - shock, high nitrogen in blood, acid base, significant coagulation abnormalities

stage 4 = vasopressor dependent, oliguria, anuria, development of ischaemic colitis and lactic acidosis

50
Q

Hospital acquired infection (nosocomial infection contracted 48 hrs after hospitalisation)

surgical site infection?
nosocomial pneumonia?
nosocomial UTIs?
bloodstream infections?
GI infections?
multidrug resistant

A

surgical site infection? = E-coli + S.A
nosocomial pneumonia? = S.A + P.aeruginosa
nosocomial UTIs? = E-coli
bloodstream infections? = S.A
GI infections? = C. difficle
multidrug resistant = MRSA

51
Q

candida albicans, the fungi that causes candidiasis features?

A

Dimorphic fungi

low numbers on healthy skin, in oropharyngeal cavity, GI, GU, disease in high risk patients

52
Q

does vaginal candidiasis cause an offensive discharge

A

No, just a cottage cheese looking type

+ dysuria + dyspareunia

53
Q

tender inguinal lymph seen in?

A

genital ulcers - HSV2

54
Q

1st line for HIV is starting ART - antiretroviral therapy

this includes two NRTIs* and one PI**/NNRTI ***

give examples

  • ‘TAZ’
    ** ‘-navir’
    *** ‘vir’
A

NRTI = Tenofovir, abacavir, zidovudine

PI = indinavir, nelfinavir, ritonavir

NNRTI = nevirapine, efavirenz

55
Q

abx for breast mastitis as needed?

A

Flucloxacillin as main organism if staph A

56
Q

which breast lump changes with menstruation/pregnancy

which breast lump changes around menopause

A

fibroadenoma

breast cyst

57
Q

describe a breast cyst
vs
breast fibroadenoma

A

cyst = fluid collection, soft fluctuable, may be multiple, may be painful, can be complex and cause malignancy - halo appaerance on mammography

mobile mass, smooth lump, rubbery and non tender - popcorn calcification on mammography

58
Q

when to excise cyst

when to excise fibroadenoma

A

blood stained / persistently refill cysts

3cm+ - excise

59
Q

tumour marker in breast cancer?

A

CA 15-3

60
Q

who to send for 2WW for triple assessment in breast clinic?

A

> 30 with unexplained breast mass

> 50 with nipple discharge, retraction, other concerning features

61
Q

if breast cancer presents with palpable axillary lymphadenopathy what to do?

A

lymph node clearance - can cause lymphoedema /functional arm impairment

62
Q

Hormonal therapy breast cancer if eostrogen receptor positive?

A

in pre-menopause : tamoxifen

in post-menopause : anastrazole * may cause osteoporotic fractures