PALS 2020 ARRHYTHMIAS exam
questions and answers with
solutions best rated a+ latest update
2024/2025
Whenever a child has an abnormal heart rate or rhythm, you must quickly
determine? - Answer Determine if the arrhythmia is causing hemodynamic
instability or other signs of deterioration.
What are the signs of instability in a patient with arrhythmias? - Answer
Respiratory distress or failure
What electrocardiographic characteristics are consistent with sinus tachy? -
Answer Beat to beat variability with changes in activity
Signs and symptoms of sinus tachycardia - Answer HR less than 220 in infants, less
than 189 in a child
Present and normal p waves
HR vaires with activity or stimulation
,Supraventricular tachycardia - Answer Most common arrhythmia in children
SVT is generally characterized by an abrupt increase in HR that does not vary with
activity
This isnt a life threatening problem. Treatment is only necessary for prolonged
episodes, or cause cardiorespiratory compromise
What history is consistent with with SVT? - Answer Symptoms of congenital heart
disease
Signs and symptoms of SVT? - Answer HR does not vary with activity
HR 220/min or greater in infants and 180/min or greater in child
Absent or abnormal P waves
What should be done for a stable pt in Supraventricular tachycardia? - Answer
Place bag with ice water over the upper half of the infants face
, Ask older child to blow through an obstructed straw
why does sinus tachycardia occur? - Answer The body needs increased cardiac
output
Sinus Tachycardia treatments - Answer By treating underlying cause
Atrial flutter - Answer Is a narrow complex tachyarrhythmia that can develop in
newborn infants with normal hearts.
It can develop in children with congenital heart disease, especially after cardiac
surgery.
Atrial rate can exceed 300/min, whereas the ventricular rate is slower and may be
irregular
ventricular tachycardia - Answer Wide QRS complex tachyarrhythmia generated
within the ventricles. VT is uncommon in children.
QRS complex greater than 0.09 seconds
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