A nurse is caring for a client who has a contusion of the brainstem and reports thirst. The client's urinary output was 4,000 mL over the past 24 hours. The nurse should anticipate a prescription for which of the following intravenous (IV) medications?
Epinephrine
Furosemide
Nitroprusside
Desmopressin
The Correct Answer is D
Choice A reason: Epinephrine is primarily used in emergency situations for its vasoconstrictive and bronchodilatory effects, particularly in cases of anaphylaxis or cardiac arrest. It is not typically used to manage symptoms associated with brainstem contusions or to regulate urinary output.
Choice B reason: Furosemide is a loop diuretic commonly prescribed to reduce fluid retention in conditions such as heart failure or renal disease. Given that the client has already produced a large volume of urine (4,000 mL in 24 hours, which is above the normal range of 800 to 2,000 milliliters per day), administering furosemide would not be appropriate as it would likely exacerbate the excessive urinary output.
Choice C reason: Nitroprusside is a potent vasodilator used to treat acute hypertensive crises. It has no role in the management of thirst or regulation of urinary output and is not indicated for the treatment of brainstem contusions.
Choice D reason: Desmopressin is a synthetic analogue of the naturally occurring antidiuretic hormone vasopressin. It is used to treat conditions characterized by excessive urination, such as diabetes insipidus, and to manage polyuria and polydipsia (excessive thirst) following head trauma or surgery in the pituitary region. In the context of a brainstem contusion with a reported high urinary output, desmopressin would be the appropriate medication to prescribe to reduce urine volume and address the client's thirst.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: The Mantoux skin test, also known as the tuberculin skin test, measures the immune response to the tuberculin purified protein derivative (PPD) injected under the skin. An induration of less than 1 mm is not necessarily an indication of non-infectiousness; it may indicate a lack of infection or an inadequate immune response. This test does not reflect the current infectious status as it measures a delayed hypersensitivity reaction and can remain positive for life once someone has been exposed to TB or has received the BCG vaccine.
Choice B reason: Negative sputum cultures for acid-fast bacillus are a strong indication that the client is no longer infectious. Pulmonary tuberculosis is diagnosed and monitored through sputum cultures to detect the presence of Mycobacterium tuberculosis. A series of negative cultures typically indicates that the client is not excreting the bacteria and is, therefore, not contagious.
Choice C reason: While the cessation of coughing up blood-tinged sputum is a positive sign of clinical improvement, it does not conclusively indicate that the client is no longer infectious. The absence of blood in the sputum may simply mean that the damage to lung tissues is healing, but the client could still be harboring and potentially spreading TB bacteria.
Choice D reason: The Quantiferon-TB Gold test is a blood test that measures the immune system's response to TB bacteria. A positive result indicates TB infection, but it does not distinguish between latent infection and active disease, nor does it provide information on infectiousness. The parenthetical "negative" is confusing and should be clarified in the context of the test results.
Correct Answer is B
Explanation
Choice A reason: Pressing down on the orbital area of the eye is not a recommended method for eliciting a pain response due to the risk of causing injury to the eye.
Choice B reason: Pinching the trapezius muscle is a common and safe method to elicit a pain response in an unresponsive patient. It is less invasive and carries a lower risk of injury compared to other methods.
Choice C reason: Using a 25-gauge needle is not a standard practice for eliciting a pain response due to the risk of puncture and infection.
Choice D reason: Eliciting a reflex with a reflex hammer is used to assess neurological function, not to elicit a pain response in an unresponsive patient.
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