PAEDS 3: Haem, Neuro, CAMHS and Safeguarding Flashcards
What is Acute Lymphoblastic Leukaemia (ALL)?
Uncontrolled proliferation of undifferentiated cells in the bone marrow
What is the most common childhood cancer?
ALL
How does ALL present?
Bone marrow failure - anaemia (SOB, pallor), thrombocytopenia (petechial rash, bleeding), neutropenia (recurrent infections)
Local infiltration - lymphadenopathy (+/- thymic enlargement), splenomegaly, hepatomegaly, testes, CNS, bone sx
What investigations would you do for ALL?
Bedside = examination + obs
Bloods = FBC and clotting, peripheral blood film (lymphoblasts, “Auer rods”)
Imaging = CXR showing enlarged thymus
Special tests = bone marrow biopsy
How is ALL managed?
Chemotherapy + supportive care w/blood products and abx etc.
Other options = CNS-targeted therapy (intrathecal i.e. into CSF) intrathecal, molecular treatment
Definitive = transplant (siblings usually most ideal)
What is the process of chemotherapy for ALL?
- Remission induction
- Consolidation and CNS therapy
- Intensification
- Maintenance
What is Immune Thrombocytopenic Purpura?
IgG mediated destruction of platelets
Most common cause of thrombocytopenia in children
Most common in 2-6yo
How does ITP present?
Petechiae, superficial bruising, epistaxis etc.
Recent infections, bleeding (cuts, nose), autoimmune conditions (PMHx, FHx)
What investigations should be done for ITP?
Diagnosis of exclusion
Bedside = examination
Bloods = FBC, blood smear
How is ITP managed?
Self-limiting
Major bleeding give IVIG and corticosteroids if >3 months
Chronic ITP (i.e. >6m) give immunosuppressants and consider splenectomy 2nd line
What is the aetiology of Sickle Cell Disease?
Defective beta globin chain (point mutation at codon 6 on Chr 11 = glutamine to valine)
Autosomal recessive condition
What are RFs for Sickle Cell Disease?
Afro-Carribean; higher prevalence in areas w/malaria
How can sickle cell disease present?
Hand and foot syndrome (swollen hands and feet; dactylitis - one of earliest signs)
Acute chest syndrome
Splenic sequestration (anaemia, shock, death)
Painful crises/vaso-occlusive (+/- priapism)
Infection (pneumococcus and parvovirus)
Splenomegaly
What investigations should do you do Sickle Cell Disease?
Bedside = family origins questionnaire (FOQ) - Indian, Mediterranean, Middle East, Guthrie testing after antenatal screening
Bloods = haemoglobin electrophoresis (gold-standard), FBC, blood smear (sickle cells, howell-jowell bodies assoc. w/hyposplenism, nucleated RBCs)
How are acute sickle cell crises managed?
Analgesia
Oxygen
Hydration
Exchange transfusion (ACS, priapism, stroke)
Abx (in infection i.e. parvovirus)
What does long term management of sickle cell disease include?
Education = minimise trigger exposure for crises (cold, dehydration, excessive exercise, hypoxia)
Vaccination = encapsulated organisms (NHS)
Prophylaxis = OD oral penicillin, OD oral folic acid
Medical management of chronic problems = hydroxycarbamide (for recurrent hospital admission for ACS or vaso-occlusive crises)
Severe cases = HSCT
What is beta-thalassaemia?
Reduced synthesis of beta globin chain
Autosomal recessive
Manifests after first 3-6 months of life bc of HbF
How does beta thalassaemia present?
MAJOR = extramedullary haemotopoeisis (bone expansion, hepatosplenomegaly, frontal bossing), anaemia (HF, growth retardatio), Fe overload (HR, gonadal failure)
TRAIT = asx, microcytosis/normal-low-normal Hb
How is beta thalassaemia investigated?
BEDSIDE = FOQ questionnaire
Guthrie testing after antenatal screening
BLOODS = Hb electrophoresis (gold standard), blood smear (microcytic red cells, tear drop cells, microspherocytes, target cells, schistocytes, nucleated RBCs)
How is beta thalassaemia managed?
MAJOR = blood transfusion +/- iron chelation w/desferrioxamine, deferiprone (NOTE: HSCT reserved for children w/HLA identical sibling)
MINOR = no treatment needed
What are the main causes of iron deficiency anaemia in children?
Inadequate iron intake - breastmilk, cow’s milk, solids once weaned
Malabsorption
Blood loss
How does IDA present in children?
No sx until Fe <60-70g/L
Feed slowly/tire quickly
Pica = eating non-food items like soil or dirt etc.
How is IDA in children investigated?
FBC and iron studies - low MCV, low ferritin
How is IDA in children managed?
Dietary advice
Oral ferrous sulphate (200mg TDS) until normal Hb - continue for at least 3/12 after and monitor iron levels
What is Caput Succedaneum?
Neonatal swelling that crosses suture lines, resolves over few days, start at birth
Assoc. w/vaginal delivery
What is Cephalohaematoma?
Neonatal swelling that is benign, in margins of skull sutures, resolve over few months, start day 2-3 of life (delayed onset)
Assoc. w/assisted delivery
How do extracranial haemorrhages in neonates present and how are they investigated and managed?
Measure head circumference
Usually self-resolves
What is a subgaleal haemorrhage?
More severe neonatal swelling assoc. w/hypovolaemia and shock and may be assoc. w/coagulopathy
May be assoc. w/NAI (if not at birth)
What is hydrocephalus?
Increased volume of CSF occupying ventricles
What are the two aetiologies of hydrocephalus?
Communicating
Non-communicating
What is communicating hydrocephalus?
Flow of CSF is obstructed after it exits the ventricles due to failure to resorb CSF
Caused by: meningitis, SAH
What is non-communicating hydrocephalus?
Flow of CSF obstructed within the ventricles.
Caused by:
- congenital aqueduct stenosis e.g. Dandy-Walker malformation (4th ventricle enlarged w/no outlets), Chiari malformation (cerebellar tonsils displaced down through foramen magnum)
- acquired aqueduct stenosis through IVH (preterm infants, grade 3 or 4)
How does hydrocephalus present?
ACUTE = vomiting, irritable, impaired consciousness
CHRONIC = failure to thrive, developmental delays
OTHER = increased head circumference, tense fontanelle, increased tone, papilloedema, ataxic gait
Sunset sign = eyes appear to be drive down bilaterally
How is hydrocephalus investigated?
BEDSIDE = measure head circumference
IMAGING = cranial USS
How is hydrocephalus managed?
NOTE: make sure to treat any identifiable underlying causes
1st line = ventriculoperitoneal shunt (risk of blockage of infection - if happens need replacement)
Medical mx = furosemide (inhibits CSF production, removes excess fluid)
What is Intraventricular Haemorrhage?
Bleeding into ventricles, occurs more often in premature babies due to VLBW and LBW
What can cause IVH?
Changes in perfusion in brain due to:
- ECMO in preterm babies
- congenital CMV infection
Roughly what are the different grades of IVH?
I = subependymal region/germinal matrix
II = extension into normal sized ventricles, filling <50% volume of ventricle
III = extension into dilated ventricles
IV = IVH w/parenchymal extension
How does IVH present?
Sleepiness, lethargy, apnoea, reduced/absent moro reflex, hypotonia, tense fontanelle
How is IVH investigated?
Trans-fontanelle USS
How is IVH managed?
Fluid replacement
Anticonvulsant
Acetazolamide (reduce CSF) +/- LP
VPS if hydrocephalus
What risk factors do you only need one of to do a CT head scan within 1 hour for <16yo?
- suspicion of NAI
- post-traumatic seizure
- GCS <14 (or if under 1yo <15)
- at 2hrs post-injury GCS <15
- suspected open or depressed skull fracture, tense fontanelle
- signs of basal skull fracture (‘panda eyes’, haemotympanum, CSF leakage, Battle’s sign)
- focal neurological deficit
- under 1yo w/ bruise, swelling or laceration >5cm on head