Clinical ProceduresQuestion 37 of 100
What are the standard EKG paper speed and sensitivity settings used for a routine 12-lead tracing?
a.25 mm per second at 10 mm per millivolt
b.50 mm per second at 5 mm per millivolt
c.10 mm per second at 25 mm per millivolt
d.5 mm per second at 1 mm per millivolt
Explanation
The standard settings are a paper speed of 25 mm per second and a gain of 10 mm per millivolt, so each small box equals 0.04 second horizontally and 0.1 millivolt vertically. Doubling the speed to 50 mm per second is only used for special situations such as very fast rhythms and must be noted on the strip. Nonstandard settings make rate and interval measurements invalid unless clearly documented.
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