Haematology Flashcards

1
Q

How is haemophilia inherited

A

X-linked recessive

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2
Q

Blood findings of haemophilia

A

Prolonged APTT
PT, bleeding time, thrombin time all normal`
Low of respective factors

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3
Q

If a female has haemophilia what do they likely have

A

Turners

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4
Q

What must be avoided in haemophilia

A

NSAIDS and aspirin

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5
Q

What advice should be given to parents with haemophilia

A

Present ASAO to hospital if slight trauma

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6
Q

4 complications of haemophilia

A

Chronic arhtropathy
Compartment syndrome
Haematuria
HBV infection related to transfusion

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7
Q

Male versus female with reduced factor 8

A

Male- haemophilia A
Female- vWD

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8
Q

Traetment of haemophilia chronically

A

Done at haemophilia centre- MDT approach
Mild to moderate haemophilia A- desmopressin
Severe- prophylactic factor replacement

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9
Q

Why is desmopressin used to treat haemophilia A

A

Stimulates F8 and VWF release

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10
Q

Treatment of acute haemophilia

A

IV infusion of respective factor
Minor bleeds- raise to 30 % of normal
Major- raise to 100% and maintain at 30% for 2 weeks to prevent haemorrhage

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11
Q

How is haemophilia graded

A

Mild will bleed after surgery (>5% of factor)
Moderate will bleed after minor trauma (1-5% of factor)
Severe will bleed spontaneously (<1% of factor)

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12
Q

What is cows milk protein allergy

A

An allergic reaction to cows milk protein in formula fed milk but can occur in breatfed if protein present in mothers milk

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13
Q

How can IgE mediated allergy present

A

Urticaria
Facial swelling
Nausea
D&V
Itching
Sneezing
Rhinorrhoea

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14
Q

How can non-IgE mediated food allergy present

A

Erythema
Atopic eczema
GORD
Change in frequency of stools
Aversion of food
Infantile colic

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15
Q

Investigations for cows milk allergy and food allergy

A

Allergy focussed history- avoidance etc, have they trialled re-introducing allergen
Test 1- skin prick test
Test 2- total IgE or specific IgE (RAST)

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16
Q

What is RAST

A

Another term for allergen specific IgE

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17
Q

Management of Cows milk allergy

A
  1. Avoid trigger
    If formula fed use hypoallergenic formula
    If breast fed exclude from diet (takes2-3 weeks tho)
    Can give calcium and vit D supplements
  2. must regularly monitor growth
  3. Reintroduce in 6-12 months using Milk Ladder
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18
Q

Difference in formula given to formula fed babies CMPA

A

Mild and moderate- hydrolysed
Severe- amino acid based formula

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19
Q

What can be given in CMPA to breast fed children

A

Give mum calcium and vit d supplements

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20
Q

What is immune thrombocytopenia

A

Immune mediated disease against glycoprotein IIb/IIIa or Ib-V-IX-complex

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21
Q

How does ITP present in children

A

Recent infection/vaccine
Brusing
Petechial/purpuric rash
Rarely epistaxis or gingival bleeding

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22
Q

Investigations for ITP

A

FBC- isolated thrombocytopenia
Blood film
Bone marrow examination if lymph node enlargement, splenomegaly, failure to respond to treatment

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23
Q

Management of ITP

A

Mainly benign and self limiting- resolves in 6-8 weeks
Treat only if major bleeding or persistent minor bleeding

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24
Q

Managment of ITP if major bleeding

A

IVIG
Corticosteroids
Anti-Rhd
Plt transfusion if life threating

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25
Q

Traetment for chronic ITP 1st line and second

A

Mycophenolate motefil
Rituximab
Eltrombopag
Second- splenectomy

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26
Q

What is eltrombopag

A

A thrombopoietin agonist

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27
Q

What is strawberry tongue seen in

A

Scarlet fever

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28
Q

Presentation of scarlet fever

A

Tonsilitis
Fever
Malaise
Maculopapular rash

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29
Q

What is rash like in scarlet fever

A

fine punctate erythema (‘pinhead’) which generally appears first on the torso and spares the palms and soles
Has rough sandpaper texture
Spares feet and hands

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30
Q

Treatment for scarlet fever

A

Oral penicillin V for 10 days
Azithromycin if penicillin allergic
Can go back to school 24 hours after infection
Notifiable disease

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31
Q

Most common complication of scarlet fever and other ones

A

Otitis media
Rheumatic fever
Acute glomerulonephritis
Invasive complications- bacteraemia, meningitis, necrotising fasciitis

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32
Q

What are the different types of alpha thalassaemia and outcomes

A

Major with 4 alpha globulin missing- hydrops fetalis
HbH disease with 3 missing- mild/moderate anaemia with occasional transfusion
Alpha thalassaemia with 1 or 2 deleted- asymptomatic with mild/no anaemia

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33
Q

How does HbH disease present

A

Hypochromic and microcytic anameia with splenomegaly

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34
Q

What is thelarche

A

First stage of breast development

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35
Q

What is adrenarche

A

First stage of pubic development

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36
Q

How is precocious defined

A

The development of secondary sexual characteristics before 8 years in females and 9 years in males
Much more common in females

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37
Q

How is precocious puberty classified

A

Gonadotrophin dependent (central or true)- premature activation of hypothalamic-pituitary-gonadal axis. FSH and LH high
Gonadotrophin independent (pseudo, false)- due to excess sex hormones. FSH and LH low

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38
Q

How to determine cause of precocious puberty from testes

A

Bilaterally enlarged- gonadotrophin dependent
Unilaterally enlarged- gonadal tumour
Small- adrenal cause

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39
Q

Faractures associated with non-accidental injury

A

Metaphyseal
Posterior rib
Fractures at different stages of healing

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40
Q

What is a bucket handle fracture

A

Fracture of the metaphyseal corner in tibia
Seen in NAI

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41
Q

Risk factors for rickets

A

Dietary feeding of calcium
Prolonged breastfeeding
Lack of sunlight
Unsupplemented cows milk formula

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42
Q

Presentation of rickets

A

Aching bones and joints
Waddling gait
Kyphoscoliosis
Forehead bossing

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43
Q

What is kyphoscoliosis

A

Deviation of the spine laterally (scoliosis) and anteriorly (kyphosis)

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44
Q

Joint findings of rickets

A

Widening of joints
Rickety rosary- bony prominences at costochondral joint

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45
Q

Examination findings of rickets

A

Harrison sulcus- protrusion of lower ribs anteriorly
Forehead bossing
Bowed legs
Kyphoscoliosis

46
Q

Genu varum versus genu valgum

A

Genu varum is bowed legs and seen in toddlers
Genu valgum is knock knees seen in older children

47
Q

What would cause a prolonged PT in ALL

A

DIC

48
Q

Presentation of kawasakis

A

Can present with anything but typically FEVERand CRASH
C- conjunctival injection
R- polymorphous rash
A- lymphAdenopathy
S- strawberry tongue
E-dema of hands and feet which can peel

49
Q

What is main complication of kawasakis

A

Coronary artery aneurysms

50
Q

Investigations and diagnosis of kawasakis

A

Mainly a clinical diagnosis but
FBC- high WCC
CRP and ESR
ECG and echo

51
Q

Treatment of kawasakis

A

High-dose aspirin and IVIG

52
Q

What is a white coloured nodule at the roof of the mouth

A

Epsteins pearl

53
Q

What is measles

A

RNA paramyxovirus

54
Q

How does measles present

A

Prodromal phase of fever, ill and conjunctivitis
Koplik spots in mouth which are white pots
Then get a maculopapular rash- starts behind the ears and spreads to whole body
Can peel but spares the hands and feet

55
Q

How to manage measles

A

Largely supportive with pain relief and lots of fluids
Stay away from school until 4 days after development of the rash
Inform that needs to go to hospital if develop SOB or neuro symptoms
Admit to hospital if immunocompromised, pregnant or an infant

56
Q

What is the most common complication of measles

A

Otitis media

57
Q

Main complications of measles

A

Otitis media
Pneumonia
Encephalitis
Subacute sclerosing panencephalitis

58
Q

When are stages children get vaccines

A

Birth (sometimes)
2 months
3 months
4 months
1 year
3 years
12-13
13-18

59
Q

What vaccine is given at birth

A

BcG sometimes
- born in areas of uk where high rate (40 in 1000)
- parent or grandparent born in country where (40 in 1000)
- live with or close contact of someone with infectious TB

60
Q

Vaccinations done at 2 months

A

6 in 1
Oral rotavirus
Men B

61
Q

Vaccinations done at 3 months

A

6 in 1
Oral rotavirus
PCV

62
Q

Vaccinations done at 4 months

A

6 in 1
Men B

63
Q

Vaccinations done at 1 year

A

Hib/Men C
PCV
Men B
MMR

64
Q

Vaccinations done at 3 years and 4 months

A

4 in 1- diptheria, tetanus, pertussis, polio
MMR

65
Q

What is given annually to children between 2 and 10

A

In september give Live flu vaccine

66
Q

What should be given in 12-13 years

A

HPV

67
Q

What is given at age 14

A

Tetanus, diptheria, polio
Men ACWY

68
Q

What is in the 6 in 1 vaccine

A

Parents- polio
Will- whooping cough
Immunise- influenza (Hib)
Toddlers- tetanus
Because- Hep B
Death- diphteria

69
Q

What vaccine is being given to those starting uni or aged 25 or under who never had it

A

Men ACWY

70
Q

What is hereditary angioedema

A

Condition where get recurrent bouts of subcut and submucosa
Caused by deficiency in C1-esterase inhibitor
Autosomal dominant

71
Q

What is treatment for hereditary angioedema

A

C1-esterase inhibitor like Cinryze
Things like steroids and antihistamines have no effect

72
Q

What causes traumatic bruises

A

Excessive coughing/vomiting
Get them around the face and neck

73
Q

Pathophysiology and inheritance of G6PD

A

X linked
Cells become sensitive to haemolysis in response to triggers including infection, certain drugs and flava beans

74
Q

Presentation of G6PD

A

Neonatal jaundice
Haemolysis after infection or new drugs
Dark urine and malaise

75
Q

Cause of HUS

A

E coli O157

76
Q

Presentation of HUS

A

Prodrome of fever, abdo pain and diarrhoea
Triad
- MAHA leading to pallor
- thrombocytopenia
- acute renal failure

77
Q

Presentation of TTP

A

MAHA
Thrombocytopenia
Acute renal failure
Fever
Neurological symptoms

78
Q

What is risk with influenza vaccine

A

If allergic to egg allergy

79
Q

What done if egg allergy and need the flu vaccine

A

If small allergy like HIVES do in Primary care
If anaphylaxis consider requirement

80
Q

Complications of SCD

A

Avascular necrosis in bones
Stroke
MI
Splenic sequestration
Chronic cholecystisis and gall stones

81
Q

What happens in splenic sequestration and long term consequences

A

Infarct in spleen leads to back up of blood->anaemia
Long term get auto-splenectomy as fibroses to become very small

82
Q

What are sickle cell crises

A

Get vaso occlusive crises due to acidosis, hypoxia or dehydration

83
Q

What are acute chest syndromes in children with SCD

A

Occlusion of pulmonary vessels results in build up of deoxygenated blood which sets up negative feedback loop as pulnomary arteries constrict in hypoxia

84
Q

Management of acute SCD crises

A

Analgesia
Oxygen
IV fluids

85
Q

What is given to SCD patients with recurrent admissions

A

Hydroxycarbamide/hydroxyurea

86
Q

Classify complications of SCD

A

Chronic haemolysis- anaemia, splenomegaly, chronic gallstones, aplastic crises
Vaso-occlusive crises- dactylitis, acute chest syndrome, priapism, stroke, splenic sequestration
Infection- susceptible to encapsulated bacteria
Long term problems - short stature, delayed puberty, HF

87
Q

What prophylactice antibiotics can be given in SCD

A

Penicillin V

88
Q

Blood findings of G6PD during crisis and not

A

Crisis
- increased haptoglobins
- increased LDH
- reticulocytosis
- hyperbilirbuninaemia
Normal
- all fine

89
Q

How is G6PD diagnosed

A

Enzyme assay 2-3 months after the crisis

90
Q

Differences between beta thalassaemia major and trait

A

Major is homozygous whereas trait is heterozygous
In major patients present age 3-6 months with faltering growth/signs of extramedullary haematopoiesis
In trait it is normally picked up on routine bloods

91
Q

Extramedullary haematopoieis signs

A

Frontal bossing
Maxillary overgrowth (protruding jaws)

92
Q

What are options if did not get MMR but want it at any time

A

Can have at any age
Get both doses 2 months apart

93
Q

What are risk factors for Vit K deficiency

A

Maternal anti-convulsant use
Breastfeeding

94
Q

What is vitmain K deficiency and why a problem

A

Children are born with very low vitamin K which can predispose to haemorrhagic disease of the newborn
As such children are given IM vit k at birth
Can present up to 8 weeks

95
Q

Alleles of SCD homozygous versus sickle cell trait

A

Homozygous- HbSS
Trait- HbAS

96
Q

Main way of differentiating between IgE and non-IgE mediated CMPA

A

IgE will present within 2 hours of milk

97
Q

Inheritance of mitochondrial disorders

A

Only via the maternal line

98
Q

What appears with red, ragged fibres on muscle biopsy

A

Mitochondrial disorder

99
Q

How do mitochondrial disorders present

A

Myopathy- muscle cramps and weakness

100
Q

What does PICA suggest in a child

A

IDA

101
Q

When does IDA present

A

Any time after 4 months as have stores for this long then you need supplements from pureed food etc
Risk factors are prolonged breastfeeding and delayed weaning

102
Q

Consequences of late weaning for kids

A

IDA
Vit D deficiency
Poor growth

103
Q

When treating AML what is most important thing to manage after starting chemo

A

TLS

104
Q

Differing between alpha beta thalassaemia trait

A

Beta- rise in HbA2 and HbF

105
Q

What vaccines is egg allergy a problem for

A

Influenza
Yellow fever

106
Q

Presentation of folate deficiency

A

Anaemia
Glossitis- smooth beefy red tongue
Angular stomatitis

107
Q

How can polycythaemia present in newborn

A

Blue peripheries
Lethary
Hypotonia
NEC
HCT over 0.65

108
Q

First intervention for SCD crisis

A

Analgesia

109
Q

When is exchange transfusion indicated for SCD crisis

A

Priapism
Stroke
Acute chest syndrome

110
Q

What is found on electrophoresis of sickle cell anaemia

A

HbS and HbF