A client who has suffered a stroke is unable to maintain respiration and is intubated and placed on mechanical ventilator support.
What portion of the brain is most likely responsible for the inability to breathe?
Brain stem.
Parietal lobe.
Occipital lobe.
Frontal lobe.
The Correct Answer is A
Choice A rationale
The brain stem controls vital functions, including respiration. Damage to the brain stem, especially the medulla oblongata, can impair respiratory control, leading to the need for mechanical ventilation.
Choice B rationale
The parietal lobe is responsible for sensory processing and does not directly influence respiratory functions. Damage here would more likely affect sensation and spatial awareness.
Choice C rationale
The occipital lobe is primarily responsible for visual processing. Injury to this area would result in visual deficits rather than impaired respiration.
Choice D rationale
The frontal lobe is involved in cognitive functions, voluntary movement, and speech production, but it does not control respiration. Damage here would affect higher cognitive functions and motor planning.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
Tactile agnosia is the inability to recognize objects through touch, not vision. This condition affects the somatosensory cortex, impacting tactile processing.
Choice B rationale
Ataxia involves the loss of full control of bodily movements and coordination, not the inability to identify objects visually. It typically results from cerebellar dysfunction.
Choice C rationale
Visual agnosia is the inability to recognize familiar objects by sight despite having intact visual functioning. This condition often results from damage to the occipital or temporal lobes.
Choice D rationale
Positive Romberg sign indicates balance issues, typically seen when a client sways or falls when standing with eyes closed. It does not pertain to visual recognition deficits.
Correct Answer is D
Explanation
Choice A rationale
Roth's spots are retinal hemorrhages with pale centers, indicative of certain systemic conditions, but do not relate to pupil response or parasympathetic effects.
Choice B rationale
One pupil being dilated while the other is normal could indicate a variety of issues, but not specifically a parasympathetic effect. This condition is known as anisocoria.
Choice C rationale
Dilated pupils, or mydriasis, are usually the result of sympathetic stimulation, not a parasympathetic effect, which involves constriction of the pupils.
Choice D rationale
Constricted pupils, or miosis, are a parasympathetic effect typically resulting from increased activity of the parasympathetic nervous system, which reduces pupil size.
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