Which statement would the nurse use to describe the Q wave of an electrocardiogram tracing?
1. Rounded and upright and follows the QRS complex
2. Rounded and upright and precedes the QRS complex
3. Negative deflection following the R wave
4. First negative deflection after the P wave
4
Rationale 1: T waves are generally rounded and upright and follow the QRS complex.
Rationale 2: P waves are rounded and generally upright and precede the QRS complex.
Rationale 3: The negative deflection following the R wave is the S wave.
Rationale 4: The Q wave is the first negative deflection following the P wave.
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