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Pediatric Airway Management
Sunsiree Santana MD
Pediatric Critical Care
Epidemiology of cardiac arrest in children
Approximately 16,000 American children suffer cardiac arrest each year
Incidence of 20/100,000 children One half younger than 1 year of age 76% younger than 4 years Male predominance
Ann Energ Med .1999 Ann Energ Med .1999
Etiologies
SIDS
Trauma
Submersion
Cardiac diagnosis
Sepsis
Asphyxia
Almost all pediatric “codes” are of respiratory origin
Internal Data. B.C. Children’s Hospital, Vancouver. 1989.Internal Data. B.C. Children’s Hospital, Vancouver. 1989.
Pediatric cardiac arrest
Most often secondary to evolving respiratory failure, with cardiac arrest resulting from lack of cellular substrate rather than from a sudden cardiac event.
The ABC’s of CPR
Asses responsiveness
If no response open the airway: look, listen and feel for breathing
If no breathing: give 2 rescue breaths
Asses for signs of circulation
If no signs of circulation begin chest compressions
Continue “pump and blow” for 1 min
911
PALS Provider Manual. AHA .2002
Airway
• Stabilization of airway is of primary importance during the initial resuscitation of the critically or injured child.
• No matter the cause or underlying condition, further attempts at resuscitation or treatment will fail without proper control of the airway.
Goals of airway management
• Relieve anatomic obstruction
• Prevent aspiration of gastric contents
• Promote adequate gas exchange
Airway management
1. Proper positioning of the head
– Protection of cervical spine
– The most common cause of airway obstruction in children: collapse of the tongue and soft tissues
Proper head positioning
Head positioning
““Sniffing Position”Sniffing Position”
In the child older than 2 In the child older than 2 yearsyears
Towel is placed under the Towel is placed under the headhead
Airway adjuncts
• Nasopharyngeal airway– Used if the patient is semiconscious
• Oral airway
• Relieve obstruction by lifting the tongue from the soft tissues of the posterior pharynx
Nasopharyngeal Airway
Contraindications:Contraindications: Basilar skull Basilar skull
fracturefracture CSF leakCSF leak CoagulopathyCoagulopathy
Length: Nostril to TragusLength: Nostril to TragusLength: Nostril to TragusLength: Nostril to Tragus
Oral Airways
Adjuncts: Oral Airway
Correct sizeCorrect size
Adjuncts: Oral Airway
Wrong size: Too ShortWrong size: Too Short
Adjuncts: Oral Airway
Wrong size: Too LongWrong size: Too Long
Tracheal intubation
• Indications– Respiratory failure– Upper airway obstruction– Shock or hemodynamic instability– Neuromuscular weakness– Absent protective airway reflexes– Cardiac arrest (drugs administration)
Signs of Respiratory Failure
• Tachypnea• Tachycardia• Grunting • Stridor• Head bobbing• Flaring• Inability to lie
down• Agitation
• RetractionsRetractions• Access musclesAccess muscles• WheezingWheezing• SweatingSweating• Prolonged Prolonged
expirationexpiration• ApneaApnea• CyanosisCyanosis
Anatomy
Children are very different than adults !!!Children are very different than adults !!!
Anatomy
• Tongue
• Larynx• High position
• Infants : C2-C3• Adults: C4-C5
• Anterior position
• Tracheal intubation requires the alignment of 3 axes:– Oral axis– Pharyngeal axis– Laryngeal axis
Anatomy : Epiglottis
• Relatively large size in children– Short, narrow
• Floppy – not much cartilage
Laryngoscope Blades
Macintosh
Miller
Intubation Technique
Straight Laryngoscope Blade – used to Straight Laryngoscope Blade – used to pick up the epiglottispick up the epiglottis
Better in Better in younger children younger children with a floppy with a floppy epiglottisepiglottis
Intubation Technique
Curved Laryngoscope Blade – placed in the Curved Laryngoscope Blade – placed in the valleculavallecula
Better in Better in older children older children who have a who have a stiff epiglottisstiff epiglottis
Anatomy : Larynx
Narrowest point = cricoid cartilage in the child
Intubation
• Larynx cephalad and anterior in children
– Practitioner may need to be lower than patient and look up
Intubation
AgeAge kgkg ETTETT Length (lip) Length (lip)
NewbornNewborn 3.53.5 3.53.5 993 mos3 mos 6.06.0 3.53.5 10101 yr1 yr 1010 4.04.0 11112 yrs2 yrs 1212 4.54.5 1212
Children > 2 years:Children > 2 years:ETT size: ETT size: Age/4 + 4Age/4 + 4ETT depth (lip): ETT depth (lip): Age/2 + 12Age/2 + 12
Children > 2 years:Children > 2 years:ETT size: ETT size: Age/4 + 4Age/4 + 4ETT depth (lip): ETT depth (lip): Age/2 + 12Age/2 + 12
Technique: Intubation
Critically ill or injured child should be assumed to have a full stomach and are at risk for
regurgitation and aspiration of gastric content.
Rapid sequence intubation
Rapid sequence intubation
• Keys
1. Pre-oxygenation
2. Sellick’s maneuver
3. Medications
Rapid-acting neuromuscular blocker
Sedation
Medications
Benzodiazepines
Midazolam (Versed): 0.1-0.2mg/kg
Narcotics
Fentanyl : 1-2 mg/kg
Morphine: 0.1mg/kg
Medications
Ketamine: 1mg/kgBronchodilatorIncreases BP, cerebral blood flow & ICP
EtomidateThiopentalNeuromuscular blocking agents
Vecuronium(Norcuron): 0.1mg/kg
Deterioration after intubation
• Displaced tube
• Obstructed tube
• Pneumothorax
• Equipment
Thanks!