Paediatrics Flashcards
Name 5 categories of child abuse
(PENS-F) Physical Emotional/psychological Neglect Sexual Fabricated/induced illness
When should solid foods be introduced into an infants diet?
6 months
Until what age should breast feeding continue?
2 years
What is the normal cut off for weight loss that should occur during the first week of a child’s life?
They should not lose more than 10% of their birth weight in the first week, and this weight should be regained again by day 14
Describe the breast feeding hormone reflex
AP produces prolactin
PP produces oxytocin
suckling stimulates the AP and PP
Prolactin causes alveolar cells to make milk, and oxytocin lets the milk ‘down’
Baby then suckles and the breast is emptied
FIP (feedback inhibitor polypeptide) is released when the baby is not suckling which inhibits the alveolar cells from making milk
List 4 benefits of breast feeding to the baby
A-D
- less allergies
- close BOND with mother
- Complete nutritional source
- Developmental (high IQ)
Reduced infections (ear, gut, resp) Reduced autoimmune conditions Reduced SIDS risk Reduced cardiovascular disease Increases cognitive ability
List 4 benefits of breast feeding to the mother
E-H
- economic (free)
- fit (helps with weight loss)
- guards (reduces breast, ovarian and uterine cancer risks)
- reduced risk of Haemorrhage post partum
Reduced breast cancer risk Reduced ovarian cancer risk Reduced diabetes risk Helps with weight loss Builds bond with baby Reduces post-natal depression
How is CF inherited, and describe the mutation?
Autosomal recessive
affects 1/2500 births
F508 mutation on chromosome 7 in the CFTR protein
Describe the pathophysiology of CF
Normal CFTR protein = allows chloride ions to leave mucosal cells and enter the lumen of organs
Defective CFTR = chloride ions cannot leave mucosal cells which leads to thickened, sticky secretions which cannot be cleared
Affects many organ systems:
- lungs
- pancreas (exocrine deficiency)
- liver (fibrosis and thick bile)
- reproductive system (non-functioning vans deferens and thickened cervical mucous)
- poor growth and delayed puberty
What ENT complications can CF patient suffer from
Nasal polyps
Sinusitis
What common types of chest infections do CF patients get?
Pseudomonas aeriginosa
Mycobacterium abcessus
Burkholderia cepacia
Describe CF screening
Look for raised IRT (immunoreactive trypsin levels) on neonatal blood spot -> as the pancreatic duct shrivels up antenatally this means that enzymes get backed up into the blood
Genetic testing -> for CFTR mutation e.g. F508
Describe how CF may present
Meconium ileus
Recurrent infections
Failure to thrive
Describe the diagnostic tests for CF
Sweat testing (positive is Cl in sweat is >60mmol/L)
Stool testing (look for reduced faecal elastase)
Describe the treatments of CF
MDT involvement Chest physiotherapy Dieticians ?gastrostomy Prophylactic antibiotics Fat soluble vitamins and enzyme replacement
What is the incidence of down syndrome and the 3 mechanisms of trisomy?
1/1000 births Trisomy 21 caused by: - non-disjunction (90%) - translocation (5%) - mosaicism (1%)
List physical appearance features of a DS child
Prominent epicanthal folds Upward slanting palpebral fissures Small mouth and protruding tongue Round face Low set ears Single palmar crease Poor growth and short stature
List neuro complications of DS
Learning difficulties
Cataracts
Strabismus
Epilepsy
List cardiac complications of DS
Congenital heart disease in 50% children (get ECHO screened after birth)
AV septal defect is common, also VSD and tetralogy of fallot (= POR-V: pulmonary stenosis, overriding aorta, RV hypertrophy, VSD)
List GI complications of DS
Risk of duodenal atresia -> bilious vomiting and double bubble sign on AXR
Imperforate anus
Hirschprung’s disease
GORD
Coeliac disease
Describe screening for DS (invasive and non-invasive)
Non-invasive
- first trimester bloods e.g. B-HCG and PAPP-A + maternal age = risk calculation
- nuchal translucency on USS
Invasive:
- CVS/amniocentesis
What formula is used to calculate fluid requirements for children (not neonates)
4-2-1 rule
First 10kg = 4ml/kg/hr
Second 10kg = 2ml/kg/hr
Remaining kg = 1ml/kg/hr
What are the electrolyte requirements for paeds
Na = 2-4mmol/kg/hr Cl = 2-4mmol/kg/hr K = 1-2mmol/kg/hr
(0.45% NaCl is usually best)
What is the formula used to calculate the desired volume of blood for a child for transfusion?
Transfusion volume = Hb (g) (desired - actual) x Weight (kg) x 4