Paeds Flashcards
Causes of acyanotic congenital heart disease
ASD VSD PDA Coarctation of aorta Isolated valve lesion Aortopulmonary window
What is reversal of a acyanotic L to R shunt to a cyanotic R to L shunt called?
Eisenmenger’s syndrome
Causes of cyanotic congenital heart disease
Tetrology of fallot's Transposition of great arteries Tricuspid or pulmonary atresia Hypoplastic left heart Univentricular heart
What do cyanotic conditions such as tricuspid atresia and transposition of the great arteries require to be viable?
A shunt, either an ASD, VSD or PDA
S+S of VSD
Mild symptoms
Harsh blowing pansystolic murmur +/- thrill (widespread but especially left sternal edge)
ECG and CXR findings in VSD
ECG - normal progressing to LVH
CXR - pulmonary engorgement
Prognosis and management of VSD
20% close by 9 months
Large may need surgery
S+S of ASD
Usually asymptomatic
Widely split S2 and systolic pulmonary flow murmur (left sternal edge 2nd ics)
Signs of decompensation in a child with congenital heart disease?
Heart failure (sob, hepatomegally, jvp, tachycardia)
Acidosis
Failure to thrive
Poor feeding
Standard advice to patients with congenital heart disease
Avoid competitive sport and contact (relevant to most)
Ensure good dental hygiene
Avoid tattoos and piercings
ECG and CXR findings of ASD
RVH +/- RBBB
Cardiomegally / globular heart
S+S of PDA
Failure to thrive Pneumonia CCF Thrill Systolic pulmonary murmur or continuous hum
ECG findings of PDA
LVH
Prognosis and management of PDA
Usually spontaniously closes in a couple of weeks
If distress or compromise - treat CHF, IV indomethacin or ibuprofen to close
Catheter occlusion or surgical ligation
What must be done before closing a PDA?
Ensure no other cardiac defects - eg pulmonary atresia, which may rely on the PDA for function
S+S of coarctation of the aorta
Decreased femoral pulses
Raised arm BP
Systolic murmur left upper sternum
Heart failure
When do symptoms of coarctation of the aorta tend to occur?
Day 2-10 post birth as the DA closes
Components of tetralogy of fallot?
RVH
Overriding aorta
Right ventricular outflow tract obstruction (pulmonary stenosis)
VSD
S+S of tetralogy of fallot
Cyanosis
Dysponea
Faints
Squatting (increases pvr so decreases r-l shunt)
Treatment of suspected fallots tetrad
O2 Knees to chest Morphine to sedate Beta blockers Surgical repair
What is ebsteins anomaly
Effect?
Downward displacement of tricuspid valve
Atralises right ventricle causing RHF
A patient with duct dependent cyanotic heart disease needs their duct kept open! How is this done?
Administration of alprostadil
What is an example of a benign murmur in a kid? Other terms? What are the features?
Stills murmur.
Flow murmur. Functional murmur.
Lack of worrying signs (heaves, thrills, chf, clubbing, cyanosis, arrhythmia, failure to thrive), grade 1/2 only, normal variable splitting of S2, vibratory or musical, lower left sternum, decreased on standing or arching back
What congenital defects would cause fixed splitting of S2?
ASD
What congenital defects would eliminate splitting of S2
Fallots
Pulmonary atresia
Pulmonary stenosis
Transposition of great arteries
Initial end of bed assessment for paeds
PAT triangle
Appearance
Work of breathing
Circulation to skin
Assessment of young childs appearence (pneumonic)
TICLS Tone Interactiveness Consolability Look/gaze Speech/cry
Heart rate changes from infant to adolecent
Infant 100-160 Toddler 90 - 150 Preschooler 80-140 School aged 70-120 Adolescent 60-100
Resp rate changes for age of paed
Infant 30-60 Toddler 24-40 Preschooler 22-34 School aged 18-30 Adolescent 12-16
Systolic blood pressure changes with age (minimum)
Infant >60 Toddler >70 Preschooler >75 School aged >80 Adolescent >90
Average newborn temperature?
37.5
Airway/head changes in paeds vs adults
Short neck and small mandible Large head High u-shaped epiglottis Large posterior tongue Narrowest at cricoid Large tonsils
Normal developmental milestones of an infant (0-1yr) (not social)
6 weeks - smile
12 weeks - lifts head
5 months - reaches for and holds objects (palmar grasp), rolls over
6 months - sounds, passes things between hands, sit supported
7 months - responds to voice
8 months - sits unsupported, raking grasp
9 months - teething, crawls, pulls self upright, pincer grasp
11 months - hands things over or drops them
12 months - simple words, responds to name, may be able to walk
Normal developmental milestones in 2nd year of life (not social)
15 months - tries to feed self, tries to change clothes
18 months - walk unaided, interested in words, builds with bricks
24 months - kicks or throws a ball, at least 2 words together
Developmental milestones above 2 years (not social)
4 - Talks well in sentences, draws recognisable person, bladder control,
5 - holds a crayon, uses a knife and fork
When should a baby wean onto solids?
4-6 months
How much mild should a baby have per day? ml and oz
150ml/kg/day
5oz/kg/day
How long would a baby generally latch for in breast feeding?
15 minutes
What proportion of neonates develop jaundice?
60%
What is the major complication of neonatal jaundice? Presentation?
Kernicterus (encephalopathy)
Lethargy, poor feeding, hypertonicity, shrill cry,
Long term sequela of movement disorders and deafness
How can bilirubin levels be tested in neonates?
Transcutanious bilirubin levels after 24 hrs life if above 35 weeks gestation. If before either use serum levels. Confirm high readings with serum levels
What are the causes of physiological neonatal hyperbilirubinaemia?
Increased amounts of haemoglobin
Increased bilirubin production due to short rbc lifespan
Hepatic immaturity decreasing bilirubin conjugation
Lack of gut flora decreasing elimination (less steatobillagen so more urobillagen reabsorbed)
What are the characteristics of physiological neonatal hyperbilirubinaemia?
Onset after 24 hours
Gone by 14 days
Other than timing, what would suggest a neonatal jaundice was pathological?
Rapidly rising bilirubin Very high bilirubin Steatorrheoa Billirubinurea Unwell
Causes of jaundice within 24 hours?
Sepsis
Rh haemolytic disease or ABO incompatibility
Red cell disorder
What leaves a neonate at risk of sepsis in the first 24 hours?
Membrane rupture >24 hrs prior to delivery
Mother GBS +ve
Chorioamnioitis (discoloured amniotic fluid)
Prematurity
Maternal UTI
History and investigations in a neonate with jaundince before 24 hours
Risk factors for neonatal sepsis
FBC, Film, Group, Coombs test
TORCH screen, consider cultures (blood, urine)
Consider testing for G6PD deficiency
Causes of jaundice over 14 days post birth in a neonate?
Dehydration (often 2o to insufficiant breastfeeding) Sepsis Hypothyroidism Cystic fibrosis Billiary atresia Hepatitis Prolonged haemolysis (e.g. Malaria)
How would a neonate with billiary atresia present differently to one with other causes of neonatal jaundice?
Steatorrheoa and high conjugated bilirubin as opposed to unconjugated
Treatment options for neonatal jaundice? Brief mechanism
Phototherapy - light converts bilrubin to soluble form allowing excretion
Exchange transfusion - removal of fetal blood replacing with donated blood to remove the toxin
Complications of neonatal phototherapy
Temperature change
Eye damage
Diarrhoea
Fluid loss
When would exchange transfusion be considered in hyperbilirubinaemia in a neonate?
Active haemolysis
Level above the transfusion line
Features of encephalopathy
Side effects of neonatal exchange transfusion
Bradycardia, thrombocytopenia, hypoglycaemia, hyponatraemia, decreased SpO2 (due to loss of HbF)
What factors suggest that a baby is at risk of significant hyperbilirubinaemia
Premature
Sibling has had jaundince needing phototherapy
Mother intends to breastfeed exclusively
Onset within 24 hours
Commonest cause of gastroenteritis in paeds?
Rotavirus
Causes of paediatric acute diarrhoea with pertinent history/examination/complications?
Viral
Bacterial - Hx: travel, dodgy foods, blood - comp: HUS
Appendicitis - O/E: rebound tenderness etc.
Intersusseption - Hx: blood
Constipation!
Examinations in benign sounding D+V in paeds prior to discharge?
Fluid challenge to ensure they can stay hydrated
Investigations of chronic diarrheoa in a paed with relevant causes
TFTs - thyrotoxicosis Infection - stool culture Coeliac screen - coeliac Trial without cows milk - cows milk protein allergy Trial without milk - lactose intolerance Hx/OE - constipation, surgical Fecal calprotectin - IBD Exclusion: IBS
What is the cause and presentation of HUS?
Usually follows ecoli 0157 infection - though can be other bacteria or even without infection. Linked to a toxin released by the bacteria.
Presents with haemolytic anaemia, uraemia and kidney failure, low platelets along with organ dysfunction and encephalopathy. Usually a week or so after an episode of bloody diarrheoa
Treatment of HUS
Supportive. Including transfusion and dialysis
Causes of petechia in paeds and differentiating factors
Severe vomiting/coughing - distribution of SVC only
HSP - buttocks and back of legs +/- joint and abdo pain
Viral infection - including enterovirus and influenza
Meningococcal septicaemia - bloody poorly
Thrombocytopenia (ITP, leukaemia) - low platelet count
How do UTIs present differently in children vs adults?
As unable to convey symptoms when very young often present with sepsis, collapse, D+V, failure to thrive or colic.
What percentage of children with UTIs have an anatomical defect? Which?
35% have vesico-ureteric reflex
15% have renal scarring - usually as a result of above
5% have stones
How can urination be induced in an infant to get a clean sample?
Wash the genitals
1 hr post feed tap over the bladder
In an unwell child who needs a urine sample taking what technique could be considered?
Supra pubic aspiration
Investigations in first uti in a child?
Dip, msc
USS (though low sensitivity)
If recurrent utis in children what tests should be considered? What treatments?
Technetium renography (for scarring) - dmsa
Good test to monitor level of IBD and response to treatment?
Fecal calprotectin
Why are frequent exacerbations of IBD especially bad for children?
Require steroid therapy stunting growth
What often occurs between exacerbations in UC but not crohns that may mimic an exacerbation?
Constipation resulting in pain and overflow diarrheoa
When should merconium usually be passed by post delivery? When are we concerned? How does this change in premature neonates?
24hrs
48hrs
Delayed
When should merconium swap to be normal stools?
Day 4
Causes of delayed merconium passage?
Meconium ileus Duodenal atresia Malrotation Volvulus Hirchsprungs Anorectal malformation
Other than delayed passage of merconium, other red flags of constipation in pades?
In first few weeks of life Faltering growth Weakness or slow reflexes in legs Delayed walking Abnormal appearing anus or sacral skin Abdominal distension with vomiting
Causes of constipation in paeds
Diet and fluid intake Perianal disease leading to reluctance Cycle of hard stools to pain to harder stools to more pain Behavioural Hirschprungs disease Anorectal malformation
What is hirschsprungs disease?
Congenital absence of ganglia in segment of colon, usually starting rectally. Can progress through small bowel.
Diagnosis, treatment and complication there of of hirschsprungs disease
Biopsy
Bowel resection +/- colostomy
Short bowel syndrome
What is and presentation of gut malrotation
Failure of gut attaching to mesentery resulting in volvulus or obstruction by fibrotic bands. If necrotic pr bleeding.
Neonatal billious vomiting and failure to pass merconium
Presentation of pyloric stenosis?
Projectile non billious vomiting within minutes of a feed
At 3-8 weeks
Malnutrition or dehydration often
What signs are visible post feed in pyloric stensosis
Left to right peristalsis in luq
Olive sized pyloric mass on left side
Metabolic abnormalities commonly seen in pyloric stenosis
Hyponatraemia
Hypocholoraemia
Hypokalaemia
Metabolic alkalosis