I have a portable 3-lead ECG/EKG monitor. When sitting up the reading has a completely different shape than when lying down. The spacing between the what is normally the peak (I think this is the R wave) and the next spike (the T wave?) is much shorter when sitting up and has a different shape. Is this normal?
Yes, when lying down and relaxed there is a different wave pattern, and it is normal for faster heart beat to have a tighter representation of R-T segment...also, slight amplitude difference as well. You may try to increase your heart rate when lying down, and you will see the difference.
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