For which client would the use of a phenothiazine most likely be contraindicated?
A client being treated for a traumatic brain injury.
A client with a history of ischemic heart disease.
A pediatric client.
A client with type 2 diabetes.
The Correct Answer is A
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
This is because teriparatide affects calcium and phosphorus metabolism in a pattern consistent with the known actions of endogenous PTH (eg, increases serum calcium and decreases serum phosphorus)12.
Choice A is wrong because teriparatide does not decrease serum calcium, but increases it.
Choice C is wrong because teriparatide does not increase serum phosphorus, but decreases it.
Choice D is wrong because teriparatide does not decrease serum calcium, but increases it.
Normal ranges for serum calcium are 8.5 to 10.2 mg/dL and for serum phosphorus are 2.5 to 4.5 mg/dL.
Correct Answer is A
Explanation
Prednisone is a glucocorticoid that suppresses the production of natural cortisol by the adrenal glands. Taking prednisone on alternate days allows the adrenal glands to recover and produce some cortisol on the days without prednisone.
Choice B is wrong because prednisone does not eliminate adverse side effects, but may cause some such as weight gain, fluid retention, increased blood pressure, increased blood glucose, and increased risk of infection.
Choice C is wrong because there is no evidence of steroid tolerance, which means that higher doses are needed to achieve the same effect.
Choice D is wrong because prednisone does not prolong therapeutic effects, but may decrease them over time due to feedback inhibition of cortisol secretion.
Normal ranges for cortisol are 6 to 23 mcg/dL in the morning and 2 to 11 mcg/dL in the afternoon.
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