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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Phenothiazines are contraindicated in patients with suspected or established subcortical brain damage. Phenothiazines are a class of drugs that have antipsychotic, antiemetic, and sedative effects. They act by blocking dopamine receptors in the brain and can cause extrapyramidal symptoms, hypotension, and anticholinergic effects.
Choice B is wrong because phenothiazines are not contraindicated in patients with ischemic heart disease.
However, they can cause orthostatic hypotension and cardiac arrhythmias, so they should be used with caution and monitored closely in these patients.
Choice C is wrong because phenothiazines are not contraindicated in pediatric patients.
However, they can cause sedation, hypotension, and extrapyramidal symptoms, so they should be used with caution and at lower doses in these patients.
Choice D is wrong because phenothiazines are not contraindicated in patients with type 2 diabetes.
However, they can cause hyperglycemia and weight gain, so they should be used with caution and monitored closely in these patients.
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 can take it once a day at the same time.
Choice A. Glulisine is wrong because glulisine is a rapid-acting insulin that starts working within 15 minutes and lasts for 3 to 4 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 starts working within 15 minutes and lasts for 3 to 4 hours.
This would also require frequent injections and monitoring of blood glucose levels.
Choice C. Aspart is wrong because aspart is another rapid-acting insulin that starts working within 15 minutes and lasts for 3 to 4 hours.
This would also require frequent injections and monitoring of blood glucose levels.
Normal ranges for blood glucose levels are 70 to 130 mg/dL before meals and less than 180 mg/dL two hours after meals.
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