A member asked:

My 9 year olds rhythm strip shows t wave that looks like a mcdonalds sign. this was taken by home monitor when dizzy. told sinus arryth?

4 doctors weighed in across 2 answers
Dr. answered

Consult : Need to see the tracing. Possibilities include u wave,superimposed atrial ectopic beat, and many others including normal variant. Best to either put a picture in via consult or consult a doctor in person

Answered 2/1/2017

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Dr. Samantha Maplethorpe answered

Specializes in Functional Medicine

Sinus Arrhythmia: Sinus Arrhythmia is a normal variant that gives a name to the change in heart rate during the inspiratory and expiratory phase of respiration. It is harmless. However, pediatric EKGs can be difficult to interpret. I would make sure a Pediatric Cardiologist takes a look at it.

Answered 2/4/2017

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