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 A
Explanation
A. Cranial nerve VII (facial nerve) is not primarily responsible for hearing; however, it does have some sensory function in the ear region. The primary cranial nerve responsible for hearing is cranial nerve VIII (vestibulocochlear), which is not listed among the options.
B. Cranial nerve X (vagus nerve) is primarily involved in autonomic functions and does not directly relate to hearing.
C. Cranial nerve I (olfactory nerve) is responsible for the sense of smell.
D. Cranial nerve II (optic nerve) is responsible for vision.
Correct Answer is D
Explanation
A. A pustule is a small elevation of the skin that contains pus, typically smaller than 0.5 cm.
B. A macule is a flat, discolored area of skin that is less than 0.5 cm in diameter, so it does not fit the description of elevated lesions larger than 0.5 cm.
C. A papule is an elevated, solid lesion that is less than 0.5 cm in diameter; lesions larger than this would not be classified as papules.
D. A patch is defined as a flat, non-palpable lesion larger than 0.5 cm, and psoriasis can present as patches. Thus, the lesions described fit this classification.