Which term refers to body tremor caused by voluntary or involuntary muscle movement?

Which term refers to body tremor caused by voluntary or involuntary muscle movement?

• A. Standardization
• B. Somatic tremor
• C. Stylus
• D. Treadmill test

Answer: (B)

Somatic tremor refers to a tremor in the body caused by muscle contractions, whether voluntary or involuntary. On recordings like an ECG, this shows up as a jagged, irregular pattern that doesn’t reflect the heart’s electrical activity because the signal comes from skeletal muscles rather than the heart. Recognizing somatic tremor helps distinguish real cardiac signals from artifact, so you can take steps to reduce it—ask the patient to relax, stabilize the limbs, and check or adjust the leads. The other terms don’t describe tremor artifacts: standardization is about uniform procedures, stylus is the recording instrument on older chart recorders, and treadmill test is a stress test used to assess cardiac function during exercise.

Somatic tremor refers to a tremor in the body caused by muscle contractions, whether voluntary or involuntary. On recordings like an ECG, this shows up as a jagged, irregular pattern that doesn’t reflect the heart’s electrical activity because the signal comes from skeletal muscles rather than the heart. Recognizing somatic tremor helps distinguish real cardiac signals from artifact, so you can take steps to reduce it—ask the patient to relax, stabilize the limbs, and check or adjust the leads. The other terms don’t describe tremor artifacts: standardization is about uniform procedures, stylus is the recording instrument on older chart recorders, and treadmill test is a stress test used to assess cardiac function during exercise.