The nurse is caring for a client who has begun vomiting.
The nurse is aware that which part of the client’s brain has been stimulated?
Limbic system.
Hypothalamus.
Chemoreceptor trigger zone (CTZ).
Medulla oblongata.
The Correct Answer is C
The CTZ has to be stimulated in order for vomiting to occur. The CTZ is located in the area postrema of the medulla oblongata and receives input from various sources, such as the blood, the vestibular system, and the gastrointestinal tract.
Choice A is wrong because the limbic system involves emotion, not vomiting or other forms of GI function.
Choice B is wrong because the hypothalamus regulates various functions such as body temperature, hunger, thirst, and circadian rhythms, but not vomiting.
Choice D is wrong because the medulla oblongata is responsible for autonomic functioning such as ventilation, cardiac conduction, and vomiting, but it is not the site of stimulation for vomiting.
The medulla oblongata contains the vomiting center, which receives signals from the CTZ and other sources and initiates the act of vomiting.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Glargine is a long-acting insulin that can provide a steady level of insulin for up to 24 hours. This would be suitable for a client who does not want to administer insulin on the plane, as they would only need one injection per day.
Choice A. Aspart is wrong because aspart is a rapid-acting insulin that has a peak effect within 1 to 3 hours and lasts for 3 to 5 hours.
This would require frequent injections and monitoring of blood glucose levels.
Choice B. Lispro is wrong because lispro is also a rapid-acting insulin that has a similar onset and duration as aspart.
It would not provide adequate coverage for a long international flight.
Choice C. Glulisine is wrong because glulisine is another rapid-acting insulin that has an onset of 15 minutes and a duration of 2 to 4 hours.
It would also require multiple injections and frequent blood glucose checks.
Normal ranges for blood glucose levels are 70 to 130 mg/dL before meals and less than 180 mg/dL after meals.
Correct Answer is A
Explanation
This is because phenothiazines are contraindicated in patients with suspected or established subcortical brain damage. Phenothiazines can cause central nervous system effects such as drowsiness, dizziness, and extrapyramidal symptoms that may worsen the condition of a client with a brain injury.
Choice B is wrong because phenothiazines are not contraindicated in clients with ischemic heart disease.
However, they should be used with caution as they can cause hypotension and cardiac arrhythmias.
Choice C is wrong because phenothiazines are not contraindicated in pediatric clients.
However, they should be used with caution as they can cause sedation, anticholinergic effects, and paradoxical excitement.
Choice D is wrong because phenothiazines are not contraindicated in clients with type 2 diabetes.
However, they should be used with caution as they can cause hyperglycemia and alter the effects of antidiabetic drugs.
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