Paediatrics Flashcards
1
Q
Foetal shunts
- Ductus venosus
- Foramen ovale
- Ductus arteriosus
- Patent - cause
- Patent - presentation
A
- Connects umbilical vein to IVC; bypass liver
- Connects RA to LA; bypass RV / pulm circulation
- Connects pulm artery to aorta; bypass pulm circulation
- Rubella, prematurity
- Asymptomatic, or if large L-R shunt then SOB, difficulty feeding, poor weight gain, LRTI (monitor with echo until 1y)
2
Q
Murmurs
- Innocent (flow, during systole) murmurs - features
- Refer if
- Pan-systolic - differentials
- Ejection-systolic - differentials
- Split 2nd heart sound (S2) - cause
- Atrial septal defect
- Ventricular septal defect
- Patent ductus arteriosus
- Coarctation of the aorta
- Pulmonary stenosis
A
- Soft, short, systolic, symptomless, situation-dependent (quieter standing, worse if unwell)
- Loud (+ on standing), diastolic, other symptoms
- VSD, MR, TR
- HOCM (4th IC, left sternal border), AS, PS (ToF)
- Pulmonary valve closes slightly later than aortic valve
- Mid-systolic, crescendo-decrescendo murmur, loudest at upper left sternal border, fixed split S2
- Pan-systolic, 3/4th IC, left sternal border, + thrill
- Normal S1, continuous crescendo-decrescendo “machinery” murmur (may continue during S2)
- Systolic, below left clavicle/scapula
- Ejection systolic, loudest in pulmonary area (2nd IC, left sternal border)
3
Q
Septal defects - atrial and ventricular
- Features
- Complications - atrial
- Complications - ventricular
- Ventricular - associated with which syndromes (2)
- Atrial - associated with what structural defect
- Structural defect causes what on auscultation
- Eisenmenger syndrome - causes (3)
- Pathophysiology/features
- Management - pre-heart/lung transplant
A
- NO cyanosis, but right overload/strain, leading to right HF + pulmonary HTN
- Stroke post-VTE, AF/flutter,
- Higher risk of IE (prophylactic ABX in surgery)
- Down’s / Turner’s syndrome
- Ebsteins anomaly (low tricuspid valve so bigger RA and smaller RV), causing R-L shunt. Linked to WpW
- ‘Gallop’ rhythm - 3rd and 4th heart sounds
- ASD, VSD, patent ductus arteriosus
- Pulmonary pressure greater than systemic pressure, so shunt reverses (becomes R-L) so blood bypasses lungs + patient becomes cyanotic
- Oxygen, sildenafil (pulmonary HTN), venesection (polycythaemia), anticoagulation (thrombosis)
4
Q
Coarctation of the aorta (no shunt)
- Associated condition
- Signs
- If critical at birth, give what before surgery
- Pulmonary valve stenosis - associated diseases
- Signs
- Tetralogy of Fallot - 4 problems
- Risk factors
- CXR - defining feature
- Tet spells - what
- Another cyanotic HD with shunt
A
- Turner’s syndrome
- No cyanosis, weak femoral pulses, systolic murmur below left clavicle/scapula, LV heave post-hypertrophy, underdeveloped left arm/legs, headache/nose bleeds
- Prostaglandin E to keep DA open (do same in ToF)
- ToF, William/Noonan/congenital rubella syndromes
- Cyanosis, palpable thrill in pulmonary area, RV heave from hypertrophy, raised JVP with giant a waves
- VSD and overriding (right-leaning) aorta, alongside pulmonary valve stenosis (so RV deoxygenated blood more likely to go into aorta), causing RV hypertrophy
- Rubella, old/diabetic/alcohol drinking mother
- ‘Boot-shaped’ heart from RV thickening
- Acute worsening, can happen when waking / crying / on exertion. Squat increases SVR so blood goes to lungs
- Transposition of great arteries
5
Q
Acute SOB
- Bronchiolitis - commonest age, + causes
- Auscultation
- Management - SUPPORTIVE
- What makes more severe
- Pneumonia - commonest bacteria + virus
- If unvaccinated
- ABX - 1st line
- Recurrent LRTIs - differentials
- Croup - age group, common causative virus
- Presentation
- Mild vs moderate vs severe
- Management
- Epiglottitis - causative organism
- Presentation
- Lateral X-ray - finding
A
- < 1 year (3-6 months), RSV (also adenovirus, rhinovirus)
- Harsh breath sounds, fine inspiratory wheeze, dry cough, crackles
- Minimal handling, adequate intake, nasal saline drops/suction, O2 if <92%
- Bronchopulmonary dysplasia, CHD, CF
- Streptococcus pneumoniae, RSV
- Group B streptococcus, haemophilus influenzae
- Amoxicillin, + macrolide if atypical suspected (or PI)
- Reflux, aspiration, neurological/heart disease, asthma, CF, primary ciliary dyskinesia, immune deficiency
- 6-24 months, parainfluenza virus
- ‘Barking’ cough, hoarse, stridor, low fever
- Mild (cough but no stridor/RD at rest), moderate (add RD at rest), severe (add agitation/lethargy)
- Maybe admit, supportive, oral dexamethasone (single dose), if worse then O2 + nebulised adrenaline
- Haemophilus influenza type B (HIB)
- Sore throat, stridor, drooling, tripod, high fever
- ‘Thumbprint sign’ from oedematous epiglottis
6
Q
Wheeze
Asthma
- Acute - moderate
- Severe
- Life-threatening
- Management ‘O SHIT ME’
- Can discharge when
- Long term management - 3rd line
- Viral wheeze (expiratory, global) - features vs asthma
- If focal wheeze, consider what (3)
A
- Peak flow >50%
- PF <50%, sats <92%, no sentences, respiratory distress, RR >40 if 1-5, >30 if >5, HR >140 if 1-5, >125 if >5
- PF <33%, sats <92%, exhaustion, poor respiratory effort, hypotension, silent chest, cyanosis, reduced GCS
- Oxygen, Salbutamol (back to back), Hydrocortisone / prednisolone (1mg/kg for 3 days), ipratropium, Theophylline infusion (only in ITU as need daily levels, U+Es, ECG monitor), Magnesium IV, Escalate to CC
- Child well on maximum 6 puffs salbutamol 4 hourly
- LTRA (if under 5), LABA (if 5+)
- <3 years old, no atopy, only during viral infections
- Inhaled foreign body, lesion, focal infection
7
Q
Other paediatric respiratory conditions
- Laryngomalacia - cause
- Presentation
- Whooping cough - causative organism
- Presentation
- Diagnosis
- Management
- Key complication
- Chronic lung disease of prematurity (CLDP) - aka
- Diagnosis
- Prevention
- To complete respiratory exam, do what (3)
A
- Supraglottic larynx causes partial airway obstruction
- Chronic inspiratory stridor, worse if feeding, upset, lying back or during URTIs (no respiratory distress)
- Bordetella pertussis (gram negative bacteria)
- Coryzal symptoms for a week, then coughing fits, inspiratory ‘whoop’ when coughing ends (lasts 8 weeks)
- NP/nasal swab with PCR testing or bacterial culture
- Notifiable disease, supportive, ABX (macrolide or co-trimoxazole, + prophylactic to vulnerable close contacts)
- Bronchiectasis
- Bronchopulmonary dysplasia
- CXR changes, + needs O2 after 36 weeks GA
- Corticosteroids e.g. betamethasone to mother if showing signs of labour < 36 weeks
- Vital signs, growth chart, ENT
8
Q
Cystic fibrosis (autosomal recessive)
- CFTR mutation - commonest type
- How many are carriers, how many born with CF
- Consequence - GI
- Respiratory
- Reproductive
- 1st sign of CF, + associated signs
- Other signs
- Diagnosis - 1st
- Gold-standard - confirming 1st result
- Genetic testing for CFTR gene - when
- Common colonisers
- Management - medical
- Monitoring/screening requirements
- Primary ciliary dyskinesia - aka, inheritance, linked with
- Kartagener’s triad (not all will have all 3)
- Diagnostic test
A
- Delta-F508 (codes for particular chlorine channel)
- 1 in 25 are carriers, 1 in 2500 born with CF
- Blocked ducts (thick pancreas/biliary secretions) so lack of digestive enzymes e.g. lipase in tract, so malabsorption, steatorrhoea, abdo pain, failure to thrive
- Thick secretions, less airway clearance, bacterial colonisation, frequent infections
- Male infertility (bilateral absent vas deferens)
- Meconium ileus (with abdo distention + vomiting)
- Nasal polyps, finger clubbing, crackles/wheeze
- Newborn heel prick (immune reactive trypsinogen)
- Sweat test (pilocarpine), diagnose if Cl- >60mmol/l
- Pregnancy (amniocentesis/CVS) / shortly after birth
- Staph. aureus, pseudomonas, h. influenza, klebsiella
- CREON tablets, prophylactic flucloxacillin, bronchodilators, nebulisers (dornase alpha, saline), vaccinations (pneumococcal, varicella, influenza)
- Regular sputum/CXR, monitor for DM (50% need insulin), osteoporosis (DEXA), USS abdo, low vit D, liver failure (30%)
- Kartagener’s, autosomal recessive, consanguinity
- Paranasal sinusitis, bronchiectasis, situs inversus
- Ciliated epithelium sample, assess ciliary function (from nasal brushing / bronchoscopy)
9
Q
Cardiac abnormality - summary
- Acyanotic, with shunt
- Acyanotic, no shunt
- Cyanotic, with shunt
- Cyanotic, no shunt
- Symptoms
- Signs
- Complications
A
- ASD, VSD, PDA
- Coarctation of aorta
- ToF, TGA
- Severe pulm. stenosis, T/P atresia, hypoplastic L heart
- Problems breast feeding, failure to thrive, syncope, squatting, oedema, sweating
- Murmur, high HR/RR, clubbing, cyanosis (esp. feeding)
- Infective endocarditis, paradoxical embolism, polycythaemia, pulmonary HTN
10
Q
Respiratory - main causes of problems
- Neonates
- Infants
- Under 5
- Over 5
- Respiratory distress - signs
- Bronchiolitis vs pneumonia
A
- Resp. distress syndrome (premature, less surfactant, atelectesis + low O2/high CO2 - CXR ‘ground glass’; apnoea (20s + low HR, give IV caffeine)
- Bronchiolitis, pneumonia, croup, GI reflux/aspiration, HF
- Viral induced wheeze, croup, pneumonia
- Asthma, pneumonia
- Tachypnoea, head bobbing, tracheal tug, abdominal movements to aid ventilation, sub/intercostal recession
- Pneumonia - focal signs, higher grade fever
11
Q
Seizures
- GTC - 1st line
- Focal
- Myoclonic
- Absence
- Atonic
- MRI to rule out structural pathology if (3)
- Key blood test if afebrile seizure
- Febrile convulsion - cause (+ other differentials)
- Simple - definition
- Complex - definition
- Management
- Reoccurs how often
A
- Sodium valproate (SEs: liver damage, hair loss)
- Carbamazepine (agranulocytosis, P450 inducer, aplastic anaemia) / lamotrigine (SJS, leukopaenia)
- Valproate
- Ethosuximide (night terrors, rash) / valproate
- Valproate (3 minutes, maybe Lennox-Gastaut synd)
- 1st seizure <2yo, focal, don’t respond to 1st line
- Blood glucose
- Viral (+ infection, epilepsy, SOL, syncope, trauma)
- GTC, <15 minutes, once during febrile illness.
- Focal/partial, >15 minutes, >1x during febrile illness
- Antipyretic, reassure parents, safety netting, benzodiazepines if > 15 minutes
- 1 in 6
12
Q
Shaken baby syndrome
- Triad
- 1st line investigations
A
- Retinal haemorrhage, subdural haematoma, encephalopathy
- CT scan, FBC, LFT, clotting, toxicology, urinalysis,
LP (if stable/not contraindicated)
13
Q
Lyme disease
- Presentation
- Neurological manifestations (3)
- Diagnosis confirmed via
- Management
A
- Erythema migrans, fatigue, lymphadenopathy, myalgia, headache, fever
- Meningitis, facial palsy, cerebellar ataxia
- Antibody testing
- Amoxicillin / doxycycline
14
Q
Cerebral palsy
- Definition
- Causative factors (3)
- Types (3) and what has been damaged
- MRI - indications
- Hypoxic ischaemia encephalopathy - causes
- How to stage
- Management
A
- Mixed neurological disorder (mostly motor/posture), caused by non-progressive injury to developing brain in the first two years of life
- Antenatal (80%), hypoxic ischaemic injury during delivery, post-natal (IC haemorrhage, head injury, sepsis)
- Spastic (cortex), extrapyramidal (basal ganglia), ataxic (cerebellum)
- Rule out neurodegenerative/metabolic conditions if aetiology unclear or signs of regression
- Maternal shock, intrapartum haemorrhage, prolapsed cord, nuchal cord
- Sarnat Staging
- Therapeutic hypothermia
15
Q
Meningitis
- Non-specific presentation in babies
- Investigations
- Bacterial - commonest organisms in children (2)
- Commonest in neonates
- Antibiotics - prehospital
- Hospital if <3 months
- > 3 months
- If risk of penicillin-resistant pneumococcal infection (e.g. recent foreign travel or antibiotic use)
- Steroids - what, when, why
- Viral - commonest causes (3)
- Investigations
- Management
A
- Hypotonia/thermia, poor feeding, lethargy, bulging fontanelles
- LP, blood culture, blood for meningococcal PCR
- Neisseria meningitidis (gram-negative diplococcus), Strep. pneumoniae (gram-positive pneumococcus)
- Group B streptococcus (for neonatal sepsis too)
- IM benzylpenicillin
- Cefotaxime AND amoxicillin
- Ceftriaxone (80mg/kg) or cefotaxime
- Vancomycin
- Dexamethasone 4x/d if >3mo + LP positive for bacteria - anti-sensorineural hearing loss/neuro damage
- HSV, enterovirus, VZV
- CSF sample for HSZ/enterovirus/VZV PCR
- Supportive, + aciclovir (clinical/CSF positive decision)
16
Q
Encephalitis
- Commonest in neonates
- Commonest in children
- Presentation
- Investigations
- Management
A
- HSV-2
- HSV-1 (+ VZV, CMV, EBV, adenovirus, influenza)
- Focal neurology/seizures, altered consciousness, unusual behaviour, fever
- LP with viral PCR, CT if not (GCS <9, haemodynamically unstable, active seizures, post-ictal)
- Aciclovir
17
Q
Hydrocephalus
- Commonest cause
- Other causes
- Presentation
- Complication of VP shunt (management)
A
- Aqueductal stenosis
- Arachnoid cysts, Arnold-Chiari malformation
- Big head, bulging anterior fontanelle, sleepiness, poor tone, poor feeding/vomiting
- Infection, peri-operative intraventricular haemorrhage, blockage, over-drainage, outgrowing (replace every 2y)
18
Q
Muscular dystrophy
- Sign suggesting proximal muscle weakness
- Duchenne MD (X-linked recessive) - caused by
- Present at what age, with what
- Management - medical
- Name if dystrophin gene less severely affected
A
- Gower’s sign (when standing up from lying position)
- Defective gene for dystrophin on X-chromosome
- 3-5yo, weakness around pelvic muscles
- Oral steroids (slow progression), creatine supplements
- Becker’s MD (symptoms at 8-12yo)
19
Q
Diarrhoea
- Differential diagnosis
- Viral - commonest causes (2)
- E.coli - presentation, management
- Traveller’s diarrhoea - organism, management
- If lymphadenopathy - organism
- Haemolytic uraemic syndrome (HUS) - triad
- Cause
- Features
- Investigations
- Management
A
- IBD, IBS, gastroenteritis, appendicitis, coeliac disease, lactose intolerance
- Rotavirus, norovirus (adenovirus more subacute)
- Cramps, bloody diarrhoea, vomiting, NO ABX
- Campylobacter jejuni, give azithromycin/ciprofloxacin
- Yersinia (gram-negative bacillus), mesenteric lyphadenitis so Ddx in appendicitis
- Microangiopathic non-immune haemolytic anaemia,
thrombocytopenia, AKI - E.coli (+ shigella) - shiga toxin
- Diarrhoea, severe abdominal pain, vomiting
- Stool culture, FBC, blood film, G+S, COOM, LDH, coagulation screen, biochemistry
- Supportive - RRT, anti-HTN, fluid balance, transfusions
20
Q
Constipation
- History
- Idiopathic - 1st line laxative
- Secondary causes
- Red flags
- Intestinal obstruction - signs
- Causes - neonate
- Causes - slightly older
A
- <3/week, hard, ‘rabbit dropping’, straining, pain, retentive posturing, overflow soiling
- Movicol
- Hirschsprung’s, CF, hypothyroid, spinal cord lesion, sexual abuse, intestinal obstruction, anal stenosis, cow’s milk intolerance
- Meconium ileus (Hirschprungs, CF), vomiting (intestinal obstruction/Hirschprungs), ribbon stool/abnormal anus (anal stenosis), abnormal lower back/buttocks (spina bifida, sacral agenesis), failure to thrive (coeliac disease, hypothyroid, safeguarding), acute severe abdominal pain + bloating (obstruction, intussusception)
- Absolute constipation (stool/flatus), vomiting (projectile, bile stained), abdominal pain/distention, abnormal bowel sounds (high pitched/tinking at first, then absent)
- Meconium ileus, hirschprungs, oesophageal/duodenal atresia, imperforate anus
- Intussusception, malrotation/volvulus, strangulated hernia
21
Q
Coeliac disease
- What is it
- Antibodies
- Endoscopy finding
- Presentation
- Neurological signs (3) - rare
- Linked autoimmune diseases
- Associated malignancies (3)
A
- Autoimmune disease, inflammatory response to gluten
- Anti-TTG, anti-endomysial (EMA) (check IgA levels 1st)
- Crypt hypertrophy, jejunal villous atrophy
- Failure to thrive, diarrhoea, fatigue, weight loss, mouth ulcers, anaemia (iron/B12/folate deficiency), dermatitis herpetiformis on abdomen
- Peripheral neuropathy, cerebellar ataxia, epilepsy
- T1DM, thyroid, hepatitis, PBC, PSC
- Enteropathy-associated T-cell lymphoma (EATL) of the intestine, non-hodgkin lymphoma, small bowel adenocarcinoma (rare)
22
Q
Intussusception
- Presentation
- Associated conditions
- Gold-standard investigation
- Management - medical
- Surgical - indication (3)
Hirschprung’s disease
- Diagnosis
- Associated conditions
- Main complication
- Necrotising entercolitis - presentation
- Bloods
- AXR finding
A
- Severe colicky abdominal pain, ‘Red currant jelly’ stool, pale/lethargic, palpable RUQ ‘sausage shaped’ mass, vomiting, intestinal obstruction - in 6-24mo boys
- Viral illness, HSP, CF, intestinal polyps, Meckel D
- Abdominal USS + contrast enema
- Fluid resuscitation, broad IV ABX (co-amoxiclav), pneumatic reduction therapeutic enema
- Failed enema, highly distended abdomen, peritonitis
- Rectal biopsy - congenital absence of mesenteric parasypathetic ganglion cells (colonic aganglionosis)
- Down’s/Waardenburg syndrome, NF, MEN 2
- Hirschprung-associated entercolitis (HAEC) - fever, abdominal distention, bloody diarrhoea, sepsis within 2-4 weeks of birth - leads to toxic megacolon/perforation
- Premature, won’t feed, tender/distended abdomen,
no bowel sounds, blood in stool - Metabolic acidosis, low platelets
- Pneumatosis intestinalis (gas in bowel wall)