Paeds 2 Flashcards
At what age would the average child acquire the ability to sit without support?
6-8 months
At what age would the average child start to play alongside, but not interacting with, other children?
2 years
What scan can be done to look for renal scarring in VUR?
DMSA scan
1st line in paeds BLS if there are no signs of breathing on initial assessment?
Give 5 rescue breaths
Follow this with CPR 15:2
At what age would the average child acquire a good pincer grip?
12 months
Describe rash in chickenpox
The rash starts as a macular rash before quickly developing into vesicular lesions which later scab over and heal.
The rash is itchy and associated with constitutional symptoms such as a fever, headache, and general malaise.
Gastroschisis vs omphalocele?
Both are examples of congenital visceral malformations.
Gastroschisis –> refers to a defect lateral to the umbilicus
Omphalocele –> refers to a defect in the umbilicus instead
What can be provided to parents for prophylaxis of febrile seizures? (2)
1) Rectal diazepam
2) Buccal midazolam
In what situations would Abx be indicated in otitis media?
1) >4 days of illness
2) Systemically unwell
3) Perforation of TM
4) Bilateral otitis media ≤2 y/o
Mx of otitis media (if no indications for Abx)?
Supportive
Safetynetting advice –> if temperature rises in the next few days, the child deteriorates, or swelling behind the ear develops.
What are the complications of otitis media?
1) Perforation of TM
2) Mastoiditis
3) Meningitis
What is the most common cause of ambiguous genitalia in newborns?
Congenital adrenal hyperplasia
Head size in fragile X syndrome?
Typically larger than normal
What is a reflex anoxic seizure?
A syncopal episode (or presyncope) that occurs in response to pain or emotional stimuli.
Features of a reflex anoxic seizure?
- child goes very pale
- falls to floor
- 2ary anoxic seizures are common
- rapid recovery
What class of medication is alprostadil?
Prostaglandin E1
Cause of congenital adrenal hyperplasia (CAH)?
Absence of 21-hydroxylase enzyme.
This results in the underproduction of cortisol & aldosterone, and overproduction of androgens.
What is the role of 21-hydroxylase?
Responsible for converting progesterone into aldosterone and cortisol.
Progesterone is also used to create testosterone, but this conversion does NOT rely on the 21-hydroxylase enzyme.
Therefore, because there is extra progesterone floating about that cannot be converted to aldosterone or cortisol, it gets converted to testosterone instead.
How do females with CAH typically present?
Ambiguous genitalia
How do males with CAH typically present?
Salt losing:
- hyponatraemia
- vomiting
- excessive dehydration
- hypotension
- hypoglycaemia
How is a diagnosis of CAH made?
1) Elevated cortisone precursors (17-hydroxyprogsterone)
2) Steroid profile
Mx of early onset vs late onset sepsis?
Early onset –> IV benzylpenicillin + gentamicin
Late onset –> IV flucloxacillin or vancomycin + gentamicin
What is the most common organism causing late onset neonatal sepsis?
Coagulase-negative Staphylococci e.g. Staph. epidermidis
What are 2 ABSOLUTE contraindications to lumbar puncture in neonates?
1) GCS <8
2) Raised ICP e.g. bulging fontanelle
In which condition is there REDUCED functioning of UGT enzyme in liver?
Gilbert’s syndrome
In which condition is there NO functioning of UGT enzyme in liver?
Crigler-Najjar syndrome
Causes of prolonged neonatal jaundice?
1) Biliary atresia
2) Breast feeding jaundice
3) Hypothyroidism
4) Congenital infections e.g. CMV, toxoplasmosis
5) UTI
6) Prematurity
7) Galactosaemia
Which investigation is used to monitor bilirubin levels AFTER starting treatmnet?
Serum bilirubin
What is the 1st line managment option for biliary atresia?
Portoenterostomy (Kasai procedure)
Which investigation is used to monitor bilirubin levels in jaundiced neonates with a gestational age <35 weeks?
Serum bilirubin
What is involved in a Kasai procedure (portoenterostomy)?
Damaged bile ducts outside of liver are removed.
Loop of infant’s small intestine is used to replace the damaged bile ducts.
What happens in phototherapy in the management of neonatal jaundice?
Phototherapy converts unconjugated bilirubin (neurotoxic) into lumirubin (excreted in bile & urine).
What is unconjugated bilirubin converted into in phototherapy?
Lumirubin
Which investigation is used to monitor bilirubin levels in neonates that are jaundiced <24 hours of life?
Serum bilirubin
What is the key complication of neonatal jaundice?
Kernicterus (bilirubin encephalopathy) - unconjungated bilirubin is neurotoxic.
This can lead to cerebral palsy, cognitive impairment & sensorineural hearing loss.
When can phototherapy for neonatal jaundice be stopped?
When bilirubin level is >50 umol/l below the treatment line on the threshold graphs.
When should you check for REBOUND hyperbilirubinaemia after stopping phototherapy?
12-18 hours after stopping phototherapy
What is the gold standard diagnostic method for biliary atresia?
Percutaneous biopsy
When would serum bilirubin be used over transcutaneous bilirubinometry? (3)
1) Jaundice <24h after birth
2) Premature <35 weeks gestation
3) Monitoring bilirubin after treatment
What can be used as adjunct to intensified phototherapy in rhesus haemolytic disease or ABO haemolytic disease?
IV immunoglobulin
How does kernicterus present?
- lethargy
- hypotonia
- poor suck reflex
- seizures
How does biliary atresia present?
1) Prolonged conjugated jaundice
2) Pale stools
3) Dark urine
1st line investigation in jaundice <24h?
Coombs test
When are doses of anti D routinely given?
(2)
1) 28 weeks gestation
2) Within 24 hours after birth
Give 4 endocine or metabolic causes of unconjugated neonatal jaundice
1) Gilbert’s syndrome
2) Crigler-Najjar syndrome
3) Hypothyroidism
4) Galactosaemia
What is GAS also known as?
S. pyogenes
What is GBS also known as?
S. agalactiae
What is the Abx of choice for GBS prophylaxis?
Intrapartum IV benzylpenicillin
How quickly should bilirubin be measured in babies presenting with jaundice <24h after birth?
Urgent - within 2 hours
When would you conisder attempting to delay birth in women <24 weeks gestation?
1) Previous hitory of preterm birth
2) US demonstrating cervical lenght of ≤25mm
What are 2 options for delaying preterm birth in gestational age <24 weeks?
1) Prophylactic vaginal progesterone
2) Prophylactic cervical cerclage
At what gestation age should resuscitation not be performed in premature babies?
<23 weeks
What age gestation does RoP typically present?
<32 weeks gestation
What is a key risk factor for triggering retinopathy of prematurity?
High flow oxygen in premature infants
What length defines a short cervix on US?
<25mm before 24 weeks of pregnancy
Under what 2 circumstances would babies be screened for RoP?
1) Born <31 weeks gestation
2) Birth weight <1.5kg
What are the 2 mainstays of management of RoP?
1) Transpupillary laster photocoagulation
2) Anti-VEGF
Define tocolysis
Medications used to PREVENT premature labour
What is the role of nifedipine in premature labour?
Tocolytic
What are the 3 key complications of RoP?
1) Infections
2) Cataracts
3) Retinal detachment
What are 2 key risk factors for NEC?
1) Prematurity
2) Low birth weight
Role of laser therapy in the management of RoP?
This burning process prevents abnormal blood vessel proliferation.
What is the most common surgical emergency in neonates?
Necrotising enterocolitis (NEC)
What is NEC?
Inflammation & death of the bowel tissue –> perforation, peritonitis & shock.
What will U&Es show in NEC?
Hyponatraemia
What is the difference between pneumatosis intestinalis and pneumoperitoneum?
Pneumatosis intestinalis –> describes abnormal intramural gas of the digestive tract.
Pneumoperitoneum –> refers to the presence of gas in the peritoneal cavity, out of the digestive tract.
Define apnoea
Periods where breathing stops spontaneously for more than 20 seconds, or shorter periods with oxygen desaturation or bradycardia.
What criteria is used to stage NEC?
Bell’s staging criteria
What can be used to prevent apnoea and bradycardia in babies with recurrent episodes of apnoea of prematurity?
IV caffeine
AXR features in NEC?
1) Distended bowel loops
2) Thickened bowel wall (oedema)
3) Intramural gas (pneumatosis intestinalis)
4) Pneumoperitoneum: in the later stages due to bowel perforation
5) Gas in portal vein
What is retinal blood vessel development stimulated by?
Hypoxia (which is a normal condition in the retina during pregnancy).
At what age would the average child acquire the ability to walk unsupported?
13-15 months
Age of presentation of NEC vs intussusception?
NEC –> 2nd to 3rd week of life
Intussusception –> 5m to 12m
What is included in the 6 in 1 vaccine?
1) diptheria
2) tetanus
3) polio
4) pertussis
5) Hib
6) hepatitis B
What are the 2 most serious long-term health problems for women with Turner’s syndrome?
1) aortic dilatation
2) aortic dissection