A nurse is interpreting the ECG strip of a client who has bradycardia. Which cardiac components should the nurse identify as the role of the P wave?
Early ventricular repolarization
Atrial depolarization
Slow repolarization of ventricular Purkinje fibers
Ventricular depolarization
The Correct Answer is B
A. Early ventricular repolarization is represented by the T wave, not the P wave.
B. The P wave represents atrial depolarization, which is the electrical activity that triggers the contraction of the atria.
C. Slow repolarization of ventricular Purkinje fibers is represented by the T wave, not the P wave.
D. Ventricular depolarization is represented by the QRS complex, not the P wave.
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Correct Answer is C
Explanation
A. This would show a regular rhythm with a consistent rate (60-100 bpm) and clear P waves before each QRS complex, which is not present in asystole.
B. This indicates a slow heart rate (below 60 bpm) but would still display P waves and QRS complexes; asystole shows no electrical activity.
C. This is the correct interpretation as it represents a flatline on the ECG, indicating no electrical activity in the heart.
D. This would show a rapid heart rate (above 100 bpm) with present P waves, which is not the case in asystole.
Correct Answer is B
Explanation
A. Gynecomastia refers to breast tissue enlargement in males and does not typically relate to the menstrual cycle.
B. Cyclic pain refers to breast pain that is linked to the menstrual cycle, commonly occurring before menstruation and subsiding during or after menstruation.
C. Mammary pain is a broader term that may refer to any breast pain, but it does not specify the cyclical nature related to menstruation.
D. Noncyclic pain refers to breast pain not related to the menstrual cycle and does not follow the described pattern.