PAEDIATRICS Flashcards
What is the etiology of anaphylaxis?
- IgE mediated type 1 allergic reaction
- Triggers histamine release from mast cells and eosinophils
- Causes capillary leakage, edema, shock and asphyxia
What are the initial symptoms of anaphylaxis?
- Pruritis (itchy skin)
- erythema (redness)
- urticaria (hives, red raised rash)
- rhinitis
- conjunctivitis
- angiooedema
What are the general symptoms of anaphylaxis?
- Palpitations
- tachycardia
- nausea and vomiting
- abdominal pain
- collapse
- loss of consciousness
What are the airway symptoms of anaphylaxis?
- itching of the palate of external auditory meatus
- dyspnoea
- bronchospasm (wheezing) –> edema and acute stridor
- cyanosis
- circulatory collapse (rare)- reduced CRT hypotension, tachycardia
What is the initial management for anaphylaxis (before ABCDE)
- lay the patient flat
- raise legs with care
What is A in anaphylaxis?
Look for:
- obstruction
- swelling
- signs of allergen
Manage with:
- call for help
- intubation
- high flow o2, 15L through non-rebreathe mask
What is B in anaphylaxis?
Look for signs of respiratory distress:
- tracheal tug
- nasal flaring
- intercostal recession
- headbobbing
What is C in anaphylaxis?
Look for:
- Colour
- Pulse
- BP
- CRT
Manage with:
- IV fluid challenge- 20mL/kg of 0.9% NaCl in 5mins
- Maintenance fluid- 100ml/kg for 1st 10kg, then 20ml/kg
What is D in anaphylaxis?
Assess consciousness level
What is E in anaphylaxis?
Assess glucose level and do system review
What is the medical management for anaphylaxis?
ADRENALINE IM --> 500mcg if >12 --> 300mcg if >6 --> 150mcg if <6 repeated after 5min if no effect
CHLORPHENAMINE
- -> 10mg >12
- -> 5mg >6
- -> 2.5mg <6
CORTICOSTEROIDS (hydrocortisone IV)
- -> 200mg >12
- -> 100mg >6
- -> 50mg <6
SALBUTAMOL
IPRATROPIUM BROMIDE
AMINOPHYLLINE
What are the values in monitoring after anaphylaxis?
A- intubation with bag and mask ventilation B- Maintain saturations at 94-98% C- BP- 0-1 mth (50-60mmHg) - <1 yr (>70mmHg) - >1-10 yrs 70 + (age x2) mmHg - > 10 yrs minimum 90mmHg
What to do if there is no improvement in anaphylaxis symptoms following initial treatment and monitoring?
- repeat fluid challenge
- measure serum mast cell tryptase
- admit patient under paeds team
- educate parents on epi pens and BLS on discharge
What are the causes of cardio-respiratory arrest in children?
- SEVERE RESPIRATORY DISEASE
- UPPER AIRWAY OBSTRUCTION
- CARDIAC DISEASE (arrhythmias, cardiac failure, myocarditis)
- NEUROLOGICAL DISORDER (birth asphyxia, cerebral oedema, coning (brain/brainstem squeezed through the foramen magnum))
- DRUG/ TOXIN
- SEVERE HYPOXIC-ISCHAEMIC INSULT (suffocation, drowning)
- ANAPHYLAXIS
What is the management for cardio-respiratory arrest in children?
- Danger?
- Are you okay/ can you hear me? SHOUT FOR HELP
AIRWAY
- head tilt chin lift or jaw thrust. look for obstruction
BREATHING
- look a chest, listen and feel for breathing for 10 seconds
- 5 rescue breaths and if the chest does not rise, airway is not clear
CIRCULATION
- feel for pulse (BRACHIAL IN INFANT, CAROTID IN OLDER CHILD) for 10 secs
- 15 chest compression in lower half of the sternum.
- 1 finger breadth above the xiphersternum,
- 1 hand for toddler
- two fingers for baby
15: 2 at 100-120 bpm
CALL FOR HELP
What is the airway recognition in a collapsed child?
Assess latency
- looking for chest/abdominal movement
- listening for breath sounds
- feeling for expired air
Vocalisation (e.g. crying/talking) indicates patency
Look for Signs of airway obstruction- foreign body visible? fully obstructed airway will be silent
What is the airway response in a collapsed child?
Call for help if signs of airway obstruction Basic airway manoeuvres - older child : head tilt chin lift - infant: neutral position - jaw thrust
Airway adjuncts
- Oropharyngeal airway
- Nasopharyngeal airway
Suction secretions
Give oxygen O2
Call an anesthetist for definitive airway management
What is the breathing recognition in a collapsed child?
Check the effort of breathing
- respiratory rate
- recessions
- accessory muscle use
- flaring of nostrils
- inspiratory and expiratory noises: wheeze, stridor, and crepitations?
- Grunting
- Posture/ position
EFFICACY OF BREATHING
- equal air entry?
- percussion note?
- trachea central?
- gasping?
- SpO2
- Chest movement
EFFECT ON BODY
- heart rate
- capillary refill
- conscious level
What is the breathing response in a collapsed child?
If not breathing, ventilate with bag and mask
- Give O2 15L/min via a reservoir bag
- Aim O2 saturations 94-98%
- Blood gas (ABG)- usually performed venously or capillary in infants and small children
- Chest X ray
What is the circulatory recognition in a collapsed child?
VITAL SIGNS
- heart rate
- pulse volume
- blood pressure
SKIN AND MUCOUS MEMBRANE PERFUSION
- capillary refill time (central and peripheral)
- temperature
- colour
ORGAN PERFUSION
- effects on breathing
- mental status
- urine output
What is the circulatory response in a collapsed child?
Intravenous access (intraosseus needle if cannulation not rapidly established)
- BLOODS (lactate, FBC, U+Es, LFTs, CRP, blood culture, cross match and coagulation studies)
- 12 LEAD ECG
- FLUID BOLUS (20mls/kg) and assess response
What is the disability recognition in a collapsed child?
- AVPU
- Pupils size and reaction to light
- posture
- blood glucose
- evidence of seizure activity?
What is the disability response in a collapsed child?
- Protect the airway
- Endotracheal tube if GCS <8
- Recovery position if airway not protected
- Give glucose if hypoglycemia
- Treat seizure activity with benzodiazepines
What is the exposure recognition in a collapsed child?
- Expose the patient (maintain dignity and minimize heat loss) to assess for injuries, signs of infection, bleeding etc.
- Check temperature and review physiological markers
- Full history and examination
- Drug and fluid chart review
- Investigation results