The nurse is reviewing an electrocardiogram (ECG) rhythm strip. The P waves and QRS complexes are regular. The PR interval is 0.16 second, and QRS complexes measure 0.06 second. The overall heart rate is 64 beats/minute. What is the correct interpretation based on these characteristics?
1. Normal sinus rhythm
2. Sick sinus syndrome
3. Sinus bradycardia
4. First-degree heart block
1
Rationale 1: Normal sinus rhythm is defined as regular rhythm with a rate of 60 to 100 beats per minute. The PR and QRS measurements are normal, 0.12 to 0.20 second and 0.06 to 0.10 second respectively.
Rationale 2: The rhythm is regular, which is not a characteristic of sick sinus syndrome.
Rationale 3: The rate is too fast for sinus bradycardia.
Rationale 4: The PR interval is within normal limits, which does not meet the criteria for first-degree block.
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Which section of the report allows a nurse researcher to review critical summary numbers for each test?
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