Each large block of five small squares represent how many seconds on ECG paper?
0.05 seconds
0.04 seconds
0.2 seconds
0.1 seconds
0.2 seconds
Rationale: The distance across each small square is 0.04 seconds. The distance across one large square block is 0.2 seconds (five times greater since one large block contains five small squares). The distance across five large squares is equal to 1 second.
Health Professions
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Which one of the following statements is false?
A) E codes are always assigned as secondary codes. B) E codes are always sequenced as the principal code. C) E codes are not listed as a single code. D) E codes are used to classify external causes of injuries and poisonings.
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