The nurse is analyzing a client's electrocardiogram tracing and realizes that each small square on the paper is equal to:
1. 0.04 second.
2. 0.12 second.
3. 0.20 second.
4. 0.40 second.
1
The small square on the ECG graph paper equals 0.04 second. The large square equals 0.20 second. The PR interval is 0.12 to 0.20 second. Two large squares would be equal to 0.40 second.
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Fill in the blank with correct word
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