Paediatrics Flashcards
What is the ductus venosus?
Connects umbilical vein and IVC
Allows blood to bypass liver
What is the role of foramen ovale?
Connects RA to LA
Allows blood to bypass RV and pulmonary circulation
What is the role of the ductus arteriosus?
Connects pulmonary artery with aorta
Allows blood to bypass pulmonary circulation
When does the foramen ovale close and what does it become?
Fossa ovalis
Closes at first breath- Breath expands alveoli, decreases pulmonary vascular resistance, causes fall in pressure in RA, LA pressure greater than RA = Squashes atrial septum and closes foramen ovale
What can be given to keep the ductus arteriosus open?
Prostaglandin E
Which shunt is affected by prostaglandin E?
Keeps ductus arteriosus open
When does the ductus arteriosus close and what does it become?
Closes after 2-3d
Becomes ligamentum arteriosum
Increased blood oxygenation causes drop in circulating prostaglandins
When does the ductus venosus close and what does it become?
Stops functioning after umbilical cord clamped
Structurally closes after 2-3wks
Becomes ligamentum venosum
What are the features of innocent murmurs?
Soft
Short
Systolic
Symptomless
Situation dependent- Quieter on standing/only appears when unwell
What features of a murmur would prompt further investigation?
Murmur louder than 2/6
Diastolic
Louder on standing
Failure to thrive/feeding difficulty/cyanosis/SOB
What are the investigations done for murmurs?
ECG
Chest xray
ECHO
Which murmurs are pansystolic?
Mitral regurgitation (mitral area)
Tricuspid regurgitation (tricuspid area)
Ventricular septal defect (left lower sternal border)
List the ejection systolic murmurs
Aortic stenosis (aortic area)
Pulmonary stenosis (pulmonary area)
HCOM (4th ICS on L sternal border)
What causes splitting of the 2nd heart sound?
Pulmonary valve closing slightly later than aortic valve
During inspiration chest wall and diaphragm pull lungs and heart open- Negative intrathoracic pressure- Causes R side of heart to fill faster as pulls blood in from venous system- Increased volume in RV means takes longer to empty causing delay in pulmonary valve closing
Describe the examination findings of an atrial septal defect
Mid-systolic, crescendo-decrescendo loudest at upper left sternal border
Fixed split 2nd heart sound (blood flows from LA-RA increasing volume of blood in RV to empty before pulmonary valve can close)
Describe examination findings of patent ductus arteriosus
Continuous crescendo-decrescendo machinery murmur that may continue during 2nd heart sound (makes 2nd heart sound difficult to hear)
Which part of ToF dictates the severity of the condition?
The degree of pulmonary stenosis
What does the murmur in ToF arise from?
Pulmonary stenosis- Ejection systolic murmur loudest in pulmonary area
Which heart defects can causes cyanosis and why?
VSD
ASD
PDA
Transposition of great arteries
Cyanotic as cause R-L shunt
What causes cyanosis in cyanotic heart disease?
Deoxygenated blood enters systemic circulation
Blood bypasses pulmonary circulation and lungs
Occurs across R-L shunt
Which cyanotic heart defects are not always cyanotic and why?
VSD, ASD and PDA
Pressure in L heart>R heart, blood flows from high to low, prevents R-L shunt
If pulmonary pressure increases beyond systemic pressure = Starts R-L shunt and cyanosis = Eisenmenger syndrome
Which cyanotic heart defect always causes cyanosis?
Transposition of Great Arteries
Right side of heart pumps directly into aorta and systemic circulation
What is patent ductus arteriosus?
Fails to close (normally stops functioning within 1-3d and closes within 2-3wks)
Flow of blood from aorta to pulmonary artery
What are the risk factors for developing a PDA?
Genetics
Maternal rubella infection
Prematurity
Outline presentation of PDA
Can be asymptomatic and close spontaneously
Can be asymptomatic throughout childhood and present in adulthood with signs of HF
SOB
Difficulty feeding
Poor weight gain
LRTIs
Continuous crescendo-decrescendo machinery murmur continues during 2nd heart sound
Outline pathophysiology of PDA
L-R shunt from aorta-pulmonary artery
Causes increase in pressure in pulmonary vessels= Pulmonary HTN, R heart strain, R ventricular hypertrophy
Increased blood through pulmonary vessels and returning to L side of heart = Left ventricular hypertrophy
Outline diagnosis of PDA
ECHO
Doppler flow studies
Outline management of PDA
Monitor until 1y with ECHO
Trans-catheter/surgical closure after 1y or sooner if symptomatic
Outline atrial septal defect
Hole in septum between 2 atria
L-R shunt
Can then lead to Eisenmenger syndrome
What is the difference between an atrial septal defect and foramen ovale?
Foramen ovale is normal until becomes patent after birth
Every atrial septal defect is abnormal
What are the complications of ASD?
*Stroke (VTE)- DVT travels to R side then crosses to left and can travel to brain
AF or atrial flutter
Pulmonary HTN and R sided HF
Eisenmenger syndrome
Outline presentation of ASD
Mid-systolic, crescendo-decrescendo murmur in upper L sternal border
Fixed split 2nd HS
SOB
Difficulty feeding
Poor weight gain
LRTIs
Adult- Dyspnoea, HF, stroke
Link between PFO and migraine with aura
Outline management of ASD
If small and asymptomatic- Watch and wait
Transvenous catheter closure or open heart surgery
Anticoagulants in adults- Aspirin/warfarin/NOACs
What is a VSD?
Congenital hole in septum between ventricles
Which genetic conditions are associated with VSD?
Downs syndrome
Turners syndrome
What is the direction of blood flow in VSD?
Increased pressure in LV means L to R meaning its acyanotic
Leads to right sided overload and right sided HF
Eventually switches to R to left shunt and Eisenmenger syndrome
Outline presentation of VSD
Initially asymptomatic and can present in adulthood
Poor feeding, dyspnoea, tachypnoea, failure to thrive
Pan systolic murmur in L lower sternal border in 3rd/4th ICS
Systolic thrill on palpation
What are the causes of a pansystolic murmur?
VSD
Mitral regurgitation
Tricuspid regurgitation
What is the management of VSD?
Small with no evidence pulmonary HTN or HF- Watch, can close spontaneously
Transvenous catheter closure via femoral vein or open heart surgery
What is there an increased risk of in VSD?
Infective endocarditis
What are the 3 underlying lesions that can result in Eisenmenger syndrome?
ASD
VSD
PDA
What is Eisenmenger Syndrome?
Blood flows from R to L across structural heart lesion, bypassing lungs
Which lesions can result in Eisenmenger syndrome?
ASD
VSD
PDA
What is the timeline for a lesion leading to Eisenmenger syndrome?
Develops after 1-2y in large shunts
Adulthood in small shunts
Develops quicker during pregnancy- If history of ‘hole in heart’ offer ECHO and close monitoring
List some findings related to R-L shunt and chronic hypoxia
Cyanosis
Clubbing
Dyspnoea
Plethora complexion (red complexion related to polycythaemia)
What is the cause of polupycythaemia?
Cyanosis
- Bone marrow responds to low oxygen sats and produces more RBCs and Hb to increase O2 carrying capacity of blood
Polycythaemia= Plethoric complexion due to high conc. Hb
What is a risk following polycythaemia?
Blood is more viscous due to higher conc. RBCs and O2= Increased risk thrombus formation
List examination findings of Eisenmenger syndrome
Right ventricular heave
Loud P2
Raised JVP
Peripheral oedema
ASD- Mid systolic, crescendo decrescendo murmur loudest at upper left sternal border
VSD- Pan systolic murmur loudest at lower left sternal border
PDA- Continuous crescendo decrescendo machinery murmur
What is the prognosis of Eisenmenger syndrome?
Can reduce life expectancy by approx. 20y
Causes of death- HF, VTE, infection, haemorrhage
Mortality can be up to 50% in pregnancy
What is the definitive management of Eisenmenger syndrome?
Correct underlying defect to prevent development of Eisenmenger syndrome
Once pulmonary pressure high enough and syndrome develops not reversible- Only treatment is heart-lung transplant
Outline medical management of Eisenmenger syndrome
Oxygen for symptom management
Sildenafil for pulmonary HTN
Treat arrhythmias
Venesection for polycythaemia
Anticoagulation for prevention thrombosis
Prophylactic ABs to prevent infective endocarditis
What is coarctation of the aorta?
Congenital condition
Narrowing of aortic arch, usually around ductus arteriosus
Reduces pressure of blood flowing to arteries distal to narrowing and increases pressure proximal to narrowing
Which genetic condition is associated with coarctation of aorta?
Turners syndrome
Outline presentation of coarctation of the aorta
Weak femoral pulses
Higher BP in limbs before narrowing and lower in limbs after narrowing
May have systolic murmur below left clavicle and left scapula
Tachypnoea and increased work of breathing
Underdeveloped left arm where reduced flow to left subclavian artery
Underdevelopment of legs
Outline management of coarctation of the aorta
Prostaglandin E to keep ductus arteriosus open whilst awaiting surgery
What is aortic valve stenosis?
Narrowing of aortic valve
Restricts blood flow from LV into aorta
Outline presentation of aortic valve stenosis
Can be asymptomatic
Fatigue
SOB
Dizziness
Fainting
Symptoms worse on exertion
Severe AS- Presents with HF within mths of birth
Ejection systolic murmur loudest in aortic area, crescendo-decrescendo radiating to carotids
Ejection click just before murmur, palpable thrill during systole, slow rising pulse and narrow pulse pressure
List complications of aortic stenosis
LV outflow tract obstruction
HF
Ventricular arrhythmias
Bacterial endocarditis
Sudden death, often on exertion
Outline diagnosis of aortic valve stenosis
ECHO
ECG
Exercise testing
Outline management of aortic stenosis
Percutaneous balloon aortic valvoplasty
Surgical aortic valvotomy
Valve replacement
What is comgenital pulmonary valve stenosis?
3 leaflets that can develop abnormally, becoming thickened or fused
Results in narrow opening between RV and pulmonary artery
List associations of pulmonary stenosis
ToF
William syndrome
Noonan syndrome
Congenital rubella syndrome
Outline presentation of pulmonary stenosis
Often asymptomatic
Fatigue on exertion
SOB
Dizziness
Fainting
Ejection systolic murmur loudest in pulmonary area
Palpable thrill in pulmonary area
RV heave due to RV hypertrophy
Raised JVP with giant a waves
Outline investigations of pulmonary stenosis
ECHO
Outline management of pulmonary stenosis
Balloon valvuloplasty via venous catheter
If valvuloplasty not appropriate- Open heart surgery
What are the 4 co-existing pathologies of Tetralogy of Fallot?
VSD
Overriding aorta
Pulmonary valve stenosis
Right ventricular hypertrophy
Which pathology in Tetralogy of Fallot determines severity?
Degree of pulmonary stenosis- Thickened valve means more deoxygenated blood encouraged to travel across VSD to travel into the aorta
What is an overriding aorta?
Entrance to aorta is further right than normal- When RV contracts and sends blood up, higher proportion of deoxygenated blood enters aorta
List risk factors for Tetralogy of Fallot
Rubella infection
Increased maternal age
Alcohol consumption in pregnancy
Diabetic mother
How is Tetralogy of Fallot investigated?
ECHO with doppler flow studies
Chest xray- Boot shaped heart due to RV hypertrophy
Outline presentation of Tetralogy of Fallot
Ejection systolic murmur caused by pulmonary stenosis
Severe- HF before 1y
List signs and symptoms of Tetralogy of Fallot
Cyanosis
Clubbing
Poor feeding
Poor weight gain
Ejection systolic murmur
Tet spells
What are Tet spells?
Intermittent symptomatic periods where R-L shunt becomes temporarily worsened precipitating a cyanotic episode
PVR increases or systemic resistance decreases
Precipitated by walking, physical exertion or crying
Outline non-pharmacological management of Tet spells
Older- Squat
Younger- Knees to chest
Both increases systemic vascular resistance, encouraging blood to enter pulmonary vessels
Supplementary oxygen
Outline pharmacological management of Tet spells
Beta blockers- Relaxes RV and improves flow to pulmonary vessels
IV fluids- Increases pre-load and volume of blood flowing to pulmonary vessels
Morphine- Can decrease respiratory drive= More effective breathing
Phenylephrine infusion- Increases SVR
Outline management of ToF
Prostaglandin infusion- Maintains ductus arteriosus
Total surgical repair- Open heart surgery
What is the prognosis of ToF?
Depends on severity
Poor without treatment
Corrective surgery= 90% patients live to adulthood
What is Ebstein’s anomaly?
Tricuspid valve set low in right side of heart (towards apex)
Causes bigger RA and smaller RV
Leads to poor flow to pulmonary vessels
Often associated with R-L shunt across atria via ASD
Cyanosis
Which syndrome is Ebtein’s anomaly associated with?
Wolff-Parkinson-White Syndrome
Outline presentation of Ebstein’s anomaly
HF- Oedema
Gallop rhythm with 3rd and 4th HS
Cyanosis
SOB and tachycardia
Poor feeding
Collapse or cardiac arrest
When does Ebstein’s anomaly present?
A few days after birth when ductus arteriosus closes
How is Ebstein’s anomaly diagnosed?
ECHO
Outline management of Ebstein’s anomaly
Treat arrhythmias and HF
Prophylactic ABs to prevent infective endocarditis
Surgical correction
Which conditions are associated with Transposition of the GReat arteries?
VSD
Coarctation of the aorta
Pulmonary stenosis
What is the pathophysiology of Transposition of the Great Arteries?
Aorta and pulmonary trunk swapped
RV pumps blood into aorta and LV pumps blood into pulmonary vessels
Immediately life threatening
CYANOSED
Outline presentation of Transposition of Great Arteries
Cyanosis at or within a few days of birth
Patent ductus arteriosus can initially compensate
Respiratory distress
tachycardia
Poor feeding
Poor weight gain
Sweating
Outline management of Transposition of Great Arteries
VSD allows for mixing of blood to provide time for definitive treatment
Prostaglandin infusion- Maintains ductus arteriosus
Balloon septostomy- Insert catheter in foramen ovale via umbilicus- Inflate balloon to create large ASD
Open heart surgery definitive- Cardiopulmonary bypass
What is bronchiolitis?
Inflammation and infection in bronchioles
Common in winter
Children <1y, most common <6mths
What is the causative organism of bronchiolitis?
Respiratory syncytial virus (RSV)
Outline presentation of bronchiolitis
Coryzal- Snotty, sneezy, mucus in throat, watery eyes
Signs of resp. distress
Dyspnoea
Tachypnoea
Poor feeding
Mild fever (<39 degrees C)
Apnoeas
Wheeze and crackles on auscultation
What are the signs of respiratory distress?
Raised RR
Use of accessory muscles
Intercostal and subcostal recessions
Nasal flaring
Head bobbing
Tracheal tugging
Cyanosis
Abnormal airway noises
What is the function of grunting?
Caused by exhaling with glottis partially closed- Increases PEEP
What is stridor?
High pitched inspiratory noise caused by obstruction of upper airway
What is the typical course of RSV?
Bronchiolitis:
Starts as URTI with coryzal symptoms
Chest symptoms over 1st 2 days following onset coryzal symptoms
Symptoms generally worst on day 3-4
Symptoms last 7-10d
Most fully recover within 2-3wks
Increases incidence of viral induced wheeze later in childhood
When shoudl you consider admission in children with bronchiolitis?
<3mths or any pre-existing conditions (prematurity, Down syndrome, CF)
<75% normal milk intake
Clinical dehydration
RR >70
O2 sats <92%
Respiratory distress
Apnoeas
Parents not confident in managing condition at home
Outline management of bronchiolitis
Supportive management:
Ensure adequate intake
Saline nasal drops and suctioning
Supplementary oxygen
Ventilatory support:
High-flow humidified oxygen
CPAP
Intubation and ventilation
What are the most helpful signs of poor ventilation on ABG?
Rising pCO2- Shows airways collapsed, can’t clear waste CO2
Falling pH- CO2 is building up
Respiratory acidosis
If also hypoxic- Type 2 respiratory failure
What is the role of Palivizumab in bronchiolitis?
Targets RSV
Give as prophylaxis mthly
Given to high risk- Ex-premature or CHD
Provides passive protection
What is a viral induced wheeze?
Acute wheezy illness caused by viral infection
Small children have small airways- Small inflammation restricts small airways more and constricts SM
Which law is associated with viral induced wheeze?
Poiseuille’s law
Flow rate is proportional to radius of tube to power of 4
Eg: Halving diameter of tube decreases flow rate by 16 fold
Outline management of viral induced wheeze
Same pathway as acute asthma in children
Outline presentation of viral induced wheeze
Evidence of viral illness for 1-2d preceding onset of:
SOB
Signs of respiratory distress
Expiratory wheeze throughout chest
What are the causes of a focal wheeze?
Focal airway obstruction:
Inhaled foreign body
Tumour
What are the features of viral induced wheeze compared to asthma?
Presents before 3y age
No atopic history
Only occurs during viral infections
What are the potential triggers of asthma?
Infection
Exercise
Cold weather
Animals
Dust
Smoke
Doof allergens
Outline presentation of asthma
Progressively worsening SOB
Signs of resp. distress
Tachypnoea
Expiratory wheeze throughout chest
Chest can sound ‘tight’ on auscultation, with reduced air entry
Silent chest- Life-threatening
Outline moderate severity of acute asthma
Peak flow >50% predicted
Normal speech
Outline severe presentation of acute asthma
Peak flow <50% predicted
Sats <92%
Unable to complete sentences in one breath
Signs of resp. distress
Resp rate: >40 1-5y, >30 >5y
HR: >140 1-5y, >125 >5y
Outline life-threatening presentation in acute asthma
Peak flow <33% predicted
Sats <92%
Exhaustion and poor resp effort
Hypotension
Silent chest
Cyanosis
Altered consciousness/confusion
Outline management of severe acute asthma
Supplemetary O2
Inhaled/nebulised salbutamol
Inhaled/nebulised ipratropium bromide
IV magnesium sulphate
IV aminophylline
Also give oral prednisolone (for 3d) or IV hydrocortisone
Outline management of mild acute asthma
Outpatient regular salbutamol inhaler via spacer (eg: 4-6 puffs every 4h)
Outline step down of acute asthma management
Work back down ladder
Must have been off nebuliser at least 24h before discharged
Typical stepdown regime: Inhaled salbutamol 10 puffs 2hrly, 10 puffs 4hrly, 6 puffs 4hrly, 4 puffs 6hrly
Monitor potassium
What are the SEs of salbutamol?
Tachycardia
Tremor
Hyperkalaemia
When can a patient be discharged following an acute asthma attack?
Considered well- 6 puffs 4hrly salbutamol
Prescribe reducing regime for at home
Finish course of steroids
What is asthma?
Chronic inflammatory airway disease
Smooth muscle of airway hypersensitive, responds to stimuli by constricting and causing airflow obstruction
Bronchoconstriction reversible with bronchodilators (salbutamol)
What are the atopic conditions?
Asthma
Eczema
Hay fever
Food allergies
Outline presentation suggesting diagnosis of asthma
Episodic symptoms with intermittent exacerbations
Diurnal variability (worse at night and early morning)
Dry cough with wheeze and SOB
Typical triggers
Atopic conditions
FHx Asthma or atopy
Bilateral widespread ‘polyphonic wheeze’
Symptoms improve with bronchodilators
Outline diagnosis of asthma
Spirometry with reversibility testing
Direct bronchial challenge test (with histamine or methacholine)
FeNO
Peak flow variability (diary)
Outline long term management of asthma in <5y
- SABA inhaler (salbutamol)
- Low dose ICS or LTRA (montelukast)
- Add other option from step 2
- Refer
Outline medical long term management of asthma in 5-12y
- SABA
- Low dose ICS
- LABA (salmeterol)- Only continue if good response
- Medium dose ICS- COnsider adding LTRA (montelukast) or oral theophylline
- High dose ICS
- Refer
Outline long term asthma management >12y
- SABA
- Low dose ICS
- LABA (salmeterol)- Only continue if good response)
- Medium dose ICS- Consider LTRA or oral theophylline or LAMA (tiotropium)
- High dose ICS and combine step 4 with option of oral salbutamol and refer
Outline ICS use in children
Can slightly reduce growth velocity and cause small reduction in final height if used >12mths
Less of a problem with low doses
Effect of poorly controlled asthma is worse
Outline presentation of pneumonia
Cough (wet and productive)
High fever
Tachypnoea
Tachycardia
Increased WOB
Lethargy
Delirium
Hypoxia
Hypotension
What are the characteristic chest signs of pneumonia?
Bronchial breath sounds- Harsh breath sounds, equally loud on inspiration and expiration, caused by consolidation of lung tissue around airway
Focal coarse crackles- Air passing through sputum
Dullness to percussion- Lung collapse and/or consolidation
What is the most common cause of pneumonia?
Strep pneumonia
When is Group B strep pneumonia common?
Pre-vaccinated infants
Often contracted at birth as colonises vagina
What are typical findings of staph aureus pneumonia?
CXR- Pneumatocoeles (round air filled cavities) and consolidation in multiple lobes
When is haemophilus influenza a common cause of pneumonia?
Pre-vaccinated/unvaccinated
When is mycoplasma pneumonia considered as the cause of the pneumonia?
Atypical bacteria with extra-pulmonary manifestations (eg: Erythema multiforme)
What is the most common cause of viral pneumonia?
RSV
Outline investigations of pneumonia
CXR
Sputum cultures and throat swabs for bacterial cultures and viral PCR
Blood cultures
Capillary blood gas
Outline management of pneumonia
1st line- Amoxicillin
Add macrolide (erythromycin/clarithromycin/azithromycin) to cover atypical
IV if sepsis or problem with intestinal absorption
Oxygen as required
Outline management of recurrent LRTIs
FBC
CXR
Serum Igs
Test IgG to previous vaccines- Immunoglobulin class-switch recombination deficiency (unable to convert IgM to IgG)
Sweat test- CF
HIV test
What is croup?
Acute infective respiratory disease
6mth-2y
URTI causing oedema in larynx
Caused by parainfluenza virus
What is the most common causative organism of croup?
Parainfluenza virus
Why is diphtheria vaccinated against?
Causes croup
Croup caused by diphtheria leads to epiglottitis and has high mortality
Outline presentation of croup
Increased WOB
Barking cough
Hoarse voice
Stridor
Low grade fever
Outline management of croup
Oral dexamethasone- Very effective
Severe:
1. Oral dex
2. Oxygen
3. Nebulised budesonide
4. Nebulised adrenalin
5. Intubation and ventilation
What is the most common cause of epiglottitis?
Haemophilus influenza type B (HiB)- Rare now vaccinated against
Outline presentation suggesting possible epiglottitis
Sore throat and stridor
Drooling
Tripod position
High fever
Difficulty or painful swallowing
Muffled voice
Scared and quiet child
Septic and unwell appearance
Outline investigations of epiglottitis
DO NOT EXAMINE
Lateral xray of neck- Thumbprint sign (shouldn’t really xray)
Outline management of epiglottis
DO NOT EXAMINE PATIENT
Alert most senior paediatrician and anaesthetist
Prepare for an intubation (may not be required but need to be ready at all times)
Once airway secure:
IV antibiotics- Ceftriaxone
Dexamethasone
Outline prognosis of epiglottis
Most recover w/o requiring intubation
If intubated, most extubated after a few days and make full recovery
What is a common complication of epiglottitis?
Epiglottic abscess- Collection of pus around epiglottitis
LIFE THREATENING EMERGENCY
What is laryngomalacia?
Part of larynx above vocal cords causes partial airway obstruction
Leads to chronic stridor on inhalation when larynx flops across airway
Usually resolves as larynx matures
What is the classic shape of the epiglottis in laryngomalacia?
Omega shape
Outline presentation of laryngomalacia
Infants, peaks at 6mths
Inspiratory stridor- Intermittent and more prominent when feeding/upset/lying on back
No associated respiratory distress
Can cause difficulty feeding
Outline whooping cough
URTI
Pertussis (bacteria)
Coughing fits so severe, unable to take in air between coughs- Whoop to forcefully suck air in
Vaccinated
NOTIFIABLE
Outline presentation of whooping cough
Start: Mild coryzal symptoms, low grade fever and mild dry cough
More severe coughing after a week- Sudden and recurring attacks of coughing with cough free periods between- Paroxysmal
Large inspiratory whoop
Can cough so hard they give themselves a pneumothorax
Outline diagnosis of whooping cough
Nasopharyngeal/nasal swab with PCR testing or bacterial culture- Can confirm diagnosis within 2-3wks onset of symptoms
If cough present >2wks- Can test for anti-pertussis toxin IgG
Outline management of pertussis
Supportive care
Within 21d- Macrolides (azithromycin, erythromycin, clarithromycin)
Co-trimoxazole alternative
Close contacts require prophylactic antibiotics if in vulnerable group
What is a key complication of whooping cough?
Bronchiectasis
What is CLDP?
Chronic lung disease of prematurity- Bronchopulmonary dysplasia
Those born <28wks gestation- Suffer with RDS and require oxygen therapy/intubation and ventilation at birth
How is CLDP diagnosed?
Based on CXR changes and when infant requires O2 therapy after reach 36wks
Outline feature of CLDP
Low O2 sats
Increased WOB
Poor feeding and weight gain
Crackles and wheeze
Increased susceptibility to infection
Outline prevention methods of CLDP before infants birth
Betamethasone (corticosteroids) to mother’s showing signs of premature labour at <36wks gestation- Speeds up development of fetal lungs before birth
Outline prevention methods of CLDP in newborn
CPAP rather than intubation and ventilation when possible
Use caffeine to stimulate respiratory effort
Do not over oxygenate
Outline management of CLDP
Protect against RSV- Reduce risk and severity of bronchiolitis
Give mthly injections palivizumab
Outline CF
Autosomal recessive
Affects mucus glands
Mutation of CFTCR gene on Chr7