While monitoring patients, signals, or values are susceptible to variability due to which of the following? 1. Artifacts 2. Factitious events 3. Instrument drift 4. Seasonal variation
a. 1 and 3 only
b. 1, 2, and 3 only
c. 3 and 4 only
d. 2, 3, and 4 only
ANS: B
Signals or values are susceptible to variability due to artifacts, factitious events, physiologic vari-ation, and instrument drift.
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