PALS Bradycardia Algorithm

 

1. Bradycardia is diagnosed by manual testing or heart rate monitor – Normal heart rates vary with age/size.

Age CategoryAge RangeNormal Heart Rate
Newborn0-3 months80-205 per minute
Infant/Young child4 months to 2 years75-190 per minute
Child/School Age2-10 years60-140 per minute
Older child/ Adolescent    Over 10 years50-100 per minute

2. Consider possible causes…

  • Hypoxia
  • Acidosis
  • Hyperkalemia
  • Hypothermia
  • Heart block
  • Toxins/Overdoses
  • Trauma

3. … and treat immediately

  • Hypoxia – Administer oxygen
  • Acidosis – Treated with increased ventilation; use sodium bicarbonate carefully if needed
  • Hyperkalemia – Restore normal potassium level
  • Hypothermia – Rewarm slowly to avoid over-heating
  • Heart block – Consult pediatric cardiologist for possible administration of atropine, chronotropic drugs, and external pacemaker
  • Toxins/Overdoses – Supportive care; administer antidote if one is available
  • Trauma – Increase oxygen and ventilation; Avoid increased intracranial pressure by treating bradycardia aggressively in cases of head trauma

4. Establish airway and support breathing as needed.

5. Monitor heart rate/rhythm and blood pressure

6. Establish IV/IO Access

7. Hypotension?

Age CategoryAge RangeSystolic Blood PressureDiastolic Blood PressureAbnormally Low
Systolic Pressure
Neonate1 Day60-7630-45<60
Neonate    4 Days67-8435-53<60
InfantTo 1 month    73-9436-56<70
Infant1-3 months78-10344-65<70
Infant4-6 months82-10546-68<70
Infant7-12 months67-10420-60<70 + (age in years x 2)
PreSchool2-6 years70-10625-65<70 + (age in years x 2)
School Age7-14 years79-11538-78<70 + (age in years x 2)
Adolescent15-18 years93-13145-85<90

8. If hypotensive,

  • Administer epinephrine 0.01 mg/kg
  • Repeat every 3-5 minutes as needed
  • Consider atropine 0.02 mg/kg (min dose = 0.1 mg; max dose = 0.5 mg); Repeat one time if needed
  • Consider external pacemaker

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