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. 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.
Correct Answer is B
Explanation
A. The palm is not the best part of the hand to assess lymph nodes, as it lacks the sensitivity needed for palpation.
B. The parts of the fingers, particularly the pads of the fingers, are used to assess lymph node size. This allows for a more precise and sensitive examination of the lymph nodes.
C. The dorsal side of the hand is not typically used for palpation because it is less sensitive.
D. The ulnar surface of the hand is not commonly used for this purpose, as the fingertips provide better tactile sensation for assessing lymph node size.