Tape Speed Artefact

Report:

Normal sinus rhythm

Speed artefact

Comment:

Speeding up the tape has the same effect on the trace as slowing down the paper speed during a recording. The Cardiologist operating the Holter did this deliberately for my benefit, in 1976. I was taken in, seeing what I expected to see!

All the formed elements of the ECG became smaller and thinner, but obviously in the same rhythm.

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