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How do muscles cause somatic interference that shows up as artifacts on ecg tracings?
Female
asked Apr 24, 2011 at 01:20PM in Other
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answered May 01, 2011 at 05:30PMAny muscle contraction involves electrical current. Normally, while doing an ECG tracing, the patient is asked to totally relax their body's muscles, so that the electrical current from skeletal muscle contractions won't interfere with the tracing. The desire it to only have the heart's electrical activity show up, not the skeletal muscles.
If the patient is too anxious, can't understand directions for some reason, or has a medical condition causing contraction of muscles, this may interfere with the ECG tracing. It does not indicate any medical problem, it simply means the patient didn't or couldn't follow the instructions, therefore, the tracing with have additional waves from the skeletal muscle contractions.
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The content on or accessible through Medpedia.com is for informational purposes only. Medpedia is not a substitute for professional advice or expert medical services from a qualified health professional.
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