The nurse is interpreting a patient's electrocardiogram reading. After examining the P wave, which of the following should the nurse do?
1. determine if each P wave is followed by a QRS complex
2. examine and measure the QRS complex
3. measure the PR interval
4. diagnose the rhythm
3
Rationale: There are eight steps to follow when interpreting an electrocardiogram rhythm. These steps are: 1) measure the heart rate; 2) examine the R–R interval; 3) examine the P wave; 4) measure the PR interval; 5) determine if each P wave is followed by a QRS complex; 6) examine and measure the QRS complex; 7) examine and measure the QT interval; and 8) diagnose the rhythm. After examining the P wave, the nurse should measure the PR interval.
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