The nurse cares for a patient who is receiving diphenhydramine for acute rhinitis. The nurse notes that the patient has not voided for the past 12 hours.
Which action should the nurse take?
Assess the bladder for distension.
Encourage the patient to drink more fluids.
Request an order for urinary catheterization.
Request an order for an intravenous fluid bolus.
The Correct Answer is A
Choice A rationale
Diphenhydramine, an H1-receptor antagonist (first-generation antihistamine), possesses significant anticholinergic properties. These properties can cause urinary retention by inhibiting detrusor muscle contraction and constricting the bladder sphincter. Assessing the bladder for distension first will determine the immediate problem and guide intervention, with a normal post-void residual volume being less than 100 mL.
Choice B rationale
Encouraging increased fluid intake might worsen the patient's condition by increasing bladder volume and potentially exacerbating urinary retention due to the anticholinergic effects of the diphenhydramine. This action should be deferred until bladder emptying status has been accurately assessed, as further filling an already distended bladder is detrimental.
Choice C rationale
While urinary catheterization may be required for severe retention, it is an invasive procedure with risks like urinary tract infection (UTI). It is premature to request this before performing a non-invasive assessment like palpating or scanning the bladder for distension to confirm the need for intervention.
Choice D rationale
Requesting an intravenous (IV) fluid bolus would be contraindicated if the patient is experiencing urinary retention. Similar to encouraging oral fluids, a bolus would increase circulatory volume and urine production, placing greater strain on a distended bladder and potentially leading to bladder overstretching or rupture if not addressed.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","D","E","F"]
Explanation
Choice A rationale
Scanning the patient's ID band confirms the identity of the patient using two identifiers, a crucial step in the "five rights" of medication administration to ensure the drug is given to the correct individual and to integrate with electronic health records.
Choice B rationale
Calling the patient's name three times is not a standard, evidence-based procedure for medication safety; standard protocol requires using at least two forms of patient identification (e.g., name, date of birth, medical record number).
Choice C rationale
Taking a screenshot of a medication order is a deviation from proper documentation and is not an essential action; the order must be viewed and verified within the secure electronic health record (EHR) or patient chart.
Choice D rationale
Assessing the patient prior to administration is essential to establish a baseline, determine if the medication is still appropriate based on the patient's current condition (e.g., vital signs, lab values), and check for contraindications.
Choice E rationale
Verifying medication allergies is a mandatory safety step to prevent life-threatening anaphylactic or hypersensitivity reactions, aligning with the "right patient" and "right drug" components of medication safety.
Choice F rationale
Performing hand hygiene (handwashing or alcohol-based hand rub) is necessary immediately before patient contact and medication preparation to comply with infection control guidelines and prevent the transmission of microorganisms.
Correct Answer is C
Explanation
Choice A rationale
Selective serotonin receptor agonists (SSRAs), like triptans, are used to treat acute migraine headaches by stimulating serotonin receptors, causing vasoconstriction. While the patient has chronic headaches, taking high doses of acetaminophen is associated with hepatotoxicity, not direct SSRA indications. The priority order would address potential liver damage before starting migraine-specific therapy, as SSRAs are not used for chronic, non-migraine headaches.
Choice B rationale
Docusate sodium, a stool softener, is used to prevent constipation by increasing water incorporation into the stool, making it easier to pass. Although opioids, which can cause constipation, are sometimes used for severe pain, this patient is taking acetaminophen, which does not commonly cause constipation. The primary concern with chronic, high-dose acetaminophen is potential hepatotoxicity, making liver function assessment the priority.
Choice C rationale
Chronic high-dose acetaminophen ingestion (above the maximum recommended 4,000 mg/day) puts the patient at significant risk for hepatotoxicity due to the accumulation of a toxic metabolite, N-acetyl-p-benzoquinone imine (NAPQI), which depletes hepatic glutathione stores. Alanine transaminase (ALT) and aspartate transaminase (AST) are liver enzymes; elevated levels (normal ALT is about 7 to 55 U/L and AST is about 8 to 48 U/L) are key indicators of hepatocellular damage.
Choice D rationale
A basic metabolic profile (BMP) assesses electrolytes and kidney function, while a complete blood count (CBC) evaluates formed blood elements. While helpful for a general assessment, BMP and CBC are less specific for the immediate, high-priority concern of acetaminophen-induced liver damage than ALT and AST. Acetaminophen overdose primarily targets the liver, not causing immediate, profound electrolyte or hematological derangements.
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