How should the nurse identify the rhythm shown in the diagram?
ventricular tachycardia
asystole
normal sinus rhythm
ventricular fibrillation
The Correct Answer is A
A. Ventricular tachycardia: Ventricular tachycardia (VT) is identified by a regular, fast rhythm with wide QRS complexes, typically without visible P waves. This rhythm often appears as consecutive, large, uniform waves, which is consistent with what is seen in the diagram.
B. Asystole: Asystole is characterized by a flat line, indicating no electrical activity, which is not present in this strip.
C. Normal sinus rhythm: Normal sinus rhythm would show identifiable P waves, a normal QRS complex, and a regular rate, which are not observed here.
D. Ventricular fibrillation: Ventricular fibrillation appears as chaotic, irregular waveforms with no clear QRS complexes or organization, which does not match the rhythm shown.
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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.
Correct Answer is B
Explanation
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.