WEEK 2 – RESPIRATORY & RESUS Flashcards
7 KEY POINTS regarding paediatric respiratory conditions?
6 Key Respiratory Symptom Presentations & their Associated Diagnoses in Paediatric population?
CAHS Clinical Guideline - Neonatal Resuscitation Algorithm
- What percetnage of newborns require some degree of active resuscitation at birth?
- Umbilical cord clamping timing?
Potential Risk - Approximately 5-10% of newborns require some degree of active resuscitation at birth.
Adverse health outcomes may occur in the event of failure to recognize the need for resuscitation, delay in providing resuscitation or ineffective techniques.
For infants who are vigorous or deemed not to require immediate resuscitation at birth:
- Term and late preterm infants born at ≥34 weeks’ gestation deferred clamping of the cord (DCC) at ≥ 60 seconds.
- < 34 weeks’ gestational age deferring clamping the cord (DCC) for at least 30 seconds.
- There is insufficient evidence to recommend milking of the intact cord for term and preterm infants >34 weeks’ gestation and ANZCOR suggests against milking a cut cord for all newborns, irrespective of gestational age.
CAHS Clinical Guideline - Neonatal Resuscitation Algorithm
- Newborn life support flowchart?
CAHS Clinical Guideline - Respiratory Distress Syndrome (RDS)
- Epidemiology?
- Risk Factors?
- Protective factors?
- Pathophysiology?
Epidemiology
- A common neonatal respiratory disorder most frequently seen in preterm infants, however some near term infants can also be affected typically from 34-37 weeks.
- The incidence of RDS increases with decreasing gestational age.
- Risk factors: male sex, Caucasian, maternal diabetes, elective caesarean section, multiple pregnancy, perinatal asphyxia.
- Protective factors: antenatal corticosteroids, chronic foetal stress (maternal drug abuse, chronic congenital infections, prolonged rupture of membranes), IUGR/SGA.
CAHS Clinical Guideline - Respiratory Distress Syndrome (RDS)
- 6 Investigations?
- Clinical Presentation?
Investigations
1. Baseline observations and SaO2.
2. Arterial blood gas (hypoxemia, hypercarbia and sometimes a mild metabolic acidosis).
3. FBC and U&Es, glucose.
4. Septic screen.
5. CXR (AP and Lateral) will demonstrate increased density of both lung fields with reticulogranular (ground glass) appearance, air bronchograms and elevation of the diaphragm.
6. ECG/cardiac USS if suspecting CHD
CAHS Clinical Guideline - Respiratory Distress Syndrome (RDS)
- 6 Indications for Intubation?
- Management?
Indications for Intubation
1. A rising PaCO2 > 60 mmHg or falling pH < 7.25.
2. Recurrent apnoea requiring stimulation and resuscitation.
3. Increased work of breathing (sternal and intercostal recession, grunting and tachypnoea) in conjunction with abnormal blood gas analysis.
4. Consideration should be given to hypoxia, increasing oxygen requirements, and saturation trends.
5. Incipient collapse.
6. Agitation that cannot be relieved and other causes eg. pneumothorax have been ruled out.
CAHS Clinical Guideline - Respiratory Distress Syndrome (RDS)
- Ventilation: Starting Guidelines?
- Preterm Neonate?
- Term Neonate?
Ventilation: Starting Guidelines
- Avoidance of high tidal volumes is essential for prevention of air leak syndromes, especially in the period of rapid increase in compliance following surfactant administration. Volume guarantee (VG) should be commenced as soon as the infant is placed on a ventilator equipped with flow monitoring.
- VG should be monitored prior to and after surfactant administration. Initially
4.5ml/kg working up to 6 mL/kg tidal volume if required.
- The initial starting ventilation parameters are dependent on the size of the infant and clinical condition.
CAHS Clinical Guideline - Pneumonia
- How is Neonatal pneumonia categorised?
CAHS Clinical Guideline - Pneumonia
- Causes of Aspiration pneumonia?
- Pathophysiology of Aspiration pneumonia?
- Investigations for Aspiration pneumonia?
- Management of Aspiration pneumonia?
Investigations
- Chest X-ray may show changes especially in the RUL or RLL. Alternative diagnoses especially infection should be considered.
- If the infant is very unwell-investigate as per general respiratory management.
- A barium swallow may be indicated to examine feeding coordination and to whether aspiration is present.
Management
As pneumonia is possible, we would advise to treat with antibiotics if the infant is clinically very unwell, or the infant has an immune-deficiency. Otherwise treatment is dependent on
the extent of pulmonary compromise and the reason for aspiration.
CAHS Clinical Guideline - Transient Tachypnoea of the Newborn (TTN)
- Epidemiology of TTN?
- 6 Risk Factors for TTN?
- Pathophysiology of TTN?
- Clinical Presentation of TTN?
Epidemiology
- TTN occurs in ~10% of infants born between 33 and 34 weeks gestational age, ~5% of infants delivered at 35 to 36 weeks, and less than 1% of all term infants.
Risk factors for TTN include:
1. elective caesarean section
2. delivery before completing 39 weeks of gestation
3. maternal diabetes
4. maternal asthma
5. male gender
6. small or large-for-gestational
age.
CAHS Clinical Guideline - Transient Tachypnoea of the Newborn (TTN)
- 7 Differential Diagnoses of TTN?
CAHS Clinical Guideline - Transient Tachypnoea of the Newborn (TTN)
- 5 Investigations?
CAHS Clinical Guideline - Transient Tachypnoea of the Newborn (TTN)
- Management?
PCH ED Guidelines - Advanced Paediatric Life Support
- Flowchart?
PCH ED Guidelines - Acute Asthma
- Background?
- 5 Key Points?
- What history will you take?
Key points
1. If unsure if a child has anaphylaxis or asthma, treat for anaphylaxis. Treatment of both is time critical.
2. Metered dose inhalers (MDI) are preferable to nebulisers given their rapid delivery, comparable efficacy and fewer side effects.
3. Short acting beta agonist (SABA) therapy is crucial to the management of asthma.
4. Give steroids early in moderate, severe and life-threatening asthma.
5. Adolescents on combination reliever/ preventer therapy (ie budesonide/formoterol dry powder inhalation) should be managed with salbutamol for an acute exacerbation requiring treatment in hospital.
PCH ED Guidelines - Acute Asthma
- 5 Red flags for alternative diagnosis?
- What investigations will you do?
- Examination?
Investigations
- Investigations are generally not needed. Chest x-ray is not required.
- Bloods are rarely performed. Blood gases are distressing and can cause a child with respiratory compromise to deteriorate further. They are not usually required and the child’s clinical state is more important in guiding treatment.
- Measurement of serum potassium may be indicated when there has been prolonged or frequent salbutamol use.
PCH ED Guidelines - Acute Asthma
- Classification of asthma severity?
PCH ED Guidelines - Acute Asthma
- Management of Mild Asthma Flowchart?
PCH ED Guidelines - Acute Asthma
- Management of Moderate Asthma Flowchart?
PCH ED Guidelines - Acute Asthma
- Management of Severe Asthma Flowchart?
PCH ED Guidelines - Acute Asthma
- Management of Life-Threatening Asthma Flowchart?
PCH ED Guidelines - Acute Asthma
- IV magnesium sulfate 50% dosing?
- Other management considerations?
IV magnesium sulfate 50% dosing
- Product specifications: 1 mL = 2 mmol = 500 mg
- Check doses carefully
- 0.2 mmol/kg = 50 mg/kg = 0.1 mL/kg (undiluted magnesium sulfate)
- max 8 mmol
- Dilute as per local guidelines and check concentrations carefully before administration
PCH ED Guidelines - Acute Asthma
- Discharge instructions?
Australian Asthma Handbook
- Give an overview of the management of Asthma in Children aged 0–12 months?
- Give an overview of the management of Asthma in Children aged 1-5 years?
Children aged 0–12 months
- Wheezing infants aged less than 12 months old should not be treated for asthma. Wheezing in this age group is most commonly due to acute viral bronchiolitis or to small and/or floppy airways.
- Advice should be obtained from a paediatric respiratory physician or paediatrician before administering short-acting beta2 agonists, systemic corticosteroids or inhaled corticosteroids to an infant under 12 months.
- Children with clinically significant wheezing that necessitates hospitalisation or occurs frequently (e.g. more than once per 6 weeks) should be referred to a paediatric respiratory physician or paediatrician.
Australian Asthma Handbook
- Give an overview of the management of Asthma in Children aged 6 years and over?
- Avoivable & Unavoidable Asthma triggers?
Children aged 6 years and over
- The diagnosis of asthma can be made with more certainty in school-aged children. In this age group, the presence of reversible expiratory airflow limitation on spirometry supports the diagnosis of asthma.
- All school-aged children with asthma need a reliever to use when they have asthma symptoms.
- Regular preventer treatment is indicated for those with frequent intermittent asthma (flare-ups every 6 weeks or more often) or persistent asthma symptoms (daytime asthma symptoms more than once per week or night-time symptoms more than twice per month) and those with severe flare-ups, irrespective of the frequency of flare-ups or symptoms between flare-ups.
Australian Asthma Handbook
- Classification of preschool wheeze and indications for preventer treatment in children aged 1-5 years?
- Indicated: Prescribe preventer and monitor as a treatment trial. Discontinue if ineffective.
- Not indicated: Preventer is unlikely to be beneficial. Consider prescribing preventer according to overall risk for severe flare-ups.
- Symptoms: wheeze, cough or breathlessness. May be triggered by viral infection, exercise or inhaled allergens.
- Flare-up: increase in symptoms from usual day-to-day symptoms (ranging from worsening asthma over a few days to an acute asthma episode)
- Preventer options: an inhaled corticosteroid (low dose) or montelukast.
Australian Asthma Handbook
- Stepped approach to adjusting asthma medication
in children aged 1-5 years?
Australian Asthma Handbook
- Stepped approach to adjusting asthma medication
in children aged 6-11 years?
- Preventer should be started as a treatment trial. Assess response after 4–6 weeks and review before prescribing long term.
- Indicated: Prescribe preventer and monitor as a treatment trial. At follow-up, discontinue if ineffective
- Not indicated: Preventer is unlikely to be beneficial. Consider prescribing preventer according to overall risk for severe flare-ups.
- Symptoms between flare-ups. A flare-up is defined as a period of worsening asthma symptoms, from mild (e.g. symptoms that are just outside the normal range of variation for the child, documented when well) to severe (e.g. events that require urgent action by parents/carers and health professionals to prevent a serious outcome such as hospitalisation or death from asthma).
Australian Asthma Handbook
- Stepped approach to adjusting asthma medication in children aged 6-11 years?
Australian Asthma Handbook
Definition of levels of recent asthma symptoms:
- Good control?
- Partial control?
- Poor control?
- SABA: short-acting beta2 agonist
- e.g. wheezing or breathing problems
- child is fully active; runs and plays without symptoms.
- including no coughing during sleep
- e.g. wheeze or breathlessness during exercise, vigorous play or laughing
- e.g. waking with symptoms of wheezing or breathing problems
- Recent asthma control is based on symptoms over the previous 4 weeks. Each child’s risk factors for future asthma outcomes should also be assessed and taken into account in management.
PCH ED Guidelines - Brief Resolved Unexplained Event (BRUE)
- What is the definition of BRUE?
- Key points?
Definitions
This guideline will refer to all events as BRUE noting that evidence from literature is based on previous ALTE definitions.
BRUE is described as an event observed in an infant (<1 year) which is:
- sudden
- brief (<1 minute)
- now resolved
- unexplained
BRUE involves at least one of 1:
- Colour change - central cyanosis or pallor only
- Breathing change – absent, decreased or irregular
- Marked change in tone – hypertonia or hypotonia
- Altered level of responsiveness.
There are many medical causes of BRUE-like events. The term BRUE is applied only when a medical cause of the event is not established.
PCH ED Guidelines - Brief Resolved Unexplained Event (BRUE)
- What history will you take?
- Examination?
Examination
- Vital signs including pulse oximetry is essential.
- Thorough multisystem examination bearing in mind possible causes.
- Growth
- Dysmorphic features / craniofacial abnormalities.
PCH ED Guidelines - Brief Resolved Unexplained Event (BRUE)
- What are the 3 most common differentials of BRUE?
The three most common differentials of BRUE include:
1. Gastro-oesophageal Reflux Disease (GORD)
2. Lower Respiratory Tract Infection (LRTI)
3. Seizures
PCH ED Guidelines - Brief Resolved Unexplained Event (BRUE)
- 4 Immediate investigations to be considered in the Emergency Department?
- When is BRUE considered low risk?
Immediate investigations to be considered in the Emergency Department:
1. Blood gas and glucose
2. Nasopharyngeal swab for pertussis
3. ECG (QT interval)
4. Septic workup where indicated.
PCH ED Guidelines - Brief Resolved Unexplained Event (BRUE)
- Management of Low Risk BRUE?
- Management of High Risk BRUE?
High risk BRUE
- In cases that do not meet criteria for low risk, an underlying cause or serious medical problem may be possible.
- Further investigation and admission under general paediatrics may be warranted.
- Ward monitoring for up to 24 hours should include continuous pulse oximetry as a minimum.
- Respiratory monitoring (inductance plethysmography) for apnoea and cardiac monitoring may also be considered.
PCH ED Guidelines - Bronchiolitis
- Background?
- 4 Key Points?
- 5 Symptoms?
- 7 Risk factors for more serious illness?
Key points
1. Bronchiolitis is a clinical diagnosis
2. No investigations should be routinely performed
3. Management includes supporting feeding and oxygenation as required
4. No medication should be routinely administered
PCH ED Guidelines - Bronchiolitis
- Assessment of Severity?
PCH ED Guidelines - Bronchiolitis
- Investigations?
- Treatment?
Investigations
- In most children with bronchiolitis no investigations are required.
- Investigations should only be undertaken when there is deterioration or diagnostic uncertainty (eg cardiac murmur with signs of congestive cardiac failure).
- Chest X-ray (CXR) is not routinely indicated and may lead to unnecessary treatment with antibiotics.
- Blood tests (including blood gas, FBE, blood cultures) rarely have a role in management.
- Virological testing (nasopharyngeal swab or aspirate) has no role in management of individual patients.
PCH ED Guidelines - Bronchiolitis
- Treatment - Oxygen therapy?
Oxygen Therapy
- Oxygen therapy should be instituted when oxygen saturations are persistently <90%.
- Infants with bronchiolitis will have brief episodes of mild/moderate desaturations to levels <90%. These brief desaturations are not a reason to commence oxygen therapy.
- Oxygen should be discontinued when oxygen saturations are persistently ≥90%.
- Once not requiring oxygen for 2 hours, discontinue oxygen saturation monitoring. Continue other observations 2–4 hourly and reinstate intermittent oxygen monitoring if deterioration occurs.
PCH ED Guidelines - Bronchiolitis
- Treatment?
PCH ED Guidelines - Bronchiolitis
- Treatment - Hydration/Nutrition?
Hydration/nutrition
- Children are often more settled if comfort oral feeds are continued.
- When non-oral hydration is required nasogastric (NG) hydration is the route of choice.
- If IV fluid is used it should be isotonic with added glucose.
- NG or IV fluids should be commenced at two-thirds maintenance because of potential for increased ADH secretion.
PCH ED Guidelines - Bronchiolitis
- Which medications are indicated for bronchiolitis?
Medications are not indicated in the treatment of bronchiolitis!
PCH ED Guidelines - Choking
- Differece between a partial and total obstruction?
PCH ED Guidelines - Choking
- What is the management for a total obstruction?
General
- Upper airway obstruction may be caused by infection (e.g. epiglottitis, croup), and in these cases any attempt to relieve airway obstruction using the methods described are dangerous.
- Children with known or suspected infectious causes of obstruction or those in whom the cause of obstruction are unknown may require anaesthetic management.
PCH ED Guidelines - Choking
- Management if the child is coughing?
- When should active attempts to physically clear the airway be performed?
- The Choking Child Management Flowchart?
Management - If the child is coughing, this should be encouraged:
- No intervention should be attempted unless the cough becomes ineffective (quieter) or the child loses consciousness.
- A spontaneous cough is more effective than any manoeuvre.
Active attempts to physically clear the airway should only be performed if:
1. The diagnosis of foreign body aspiration is clear-cut or strongly suspected.
2. The cough is ineffective, dyspnoea is worsening or apnoea or loss of consciousness have occurred.
3. Airway opening manoeuvres fail to maintain an adequate airway.
PCH ED Guidelines - Inhaled foreign body
- History?
- Exam?
- Investigations?
PCH ED Guidelines - Cough
Defining the spectrum of paediatric cough:
- On duration of cough?
- On likelihood of an underlying disease or process?
- On cough quality?
General
- Although cough is burdensome, the function of cough serves as a vital defensive mechanism for lung health.
- Cough prevents pulmonary aspiration, promotes ciliary activity and clears airway debris.
PCH ED Guidelines - Cough
- History?
- Signs & Symptoms & Possible Underlying aetiologies?
PCH ED Guidelines - Cough
- Examination?
- 3 Investigations?
- 6 Cough types & Suggested underlying processes?
General and chest examination
- Vital signs (including temperature)
- Nutritional status (beware loss of muscle bulk and subcutaneous fat stores)
- Clubbing
- Cardiovascular system (beware abnormal cardiac examination)
- Chest signs: wheeze, crepitations, asymmetrical breath sounds.
Investigations
1. Chest X-ray
2. Spirometry (if age appropriate)
3. Specimen collection – microbiology (if appropriate)
PCH ED Guidelines - Cough
- Differentials for acute cough?
PCH ED Guidelines - Cough
- Differentials for chronic isolated cough in an otherwise healthy child?
- Differentials for chronic isolated cough in a child with underlying disease?