A nurse is providing discharge teaching to the parent of a child who is prescribed diphenhydramine 25 mg elixir every 4 hr as needed. The amount available is diphenhydramine elixir 12.5 mg/5 mL. How many mL should the nurse administer per dose?
(Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["10"]
To determine the mL of diphenhydramine elixir to administer per dose, we need to calculate the dose based on the prescribed amount and the concentration of the elixir.
Given:
Prescribed dose: 25 mg Concentration of elixir: 12.5 mg/5 mL
We can set up a proportion to find the equivalent mL for the prescribed dose: 25 mg / x mL = 12.5 mg / 5 mL
Cross-multiplying and solving for x, we get:
25 mg * 5 mL = 12.5 mg * x mL 125 mg = 12.5 mg * x mL
125 mg / 12.5 mg = x mL 10 mL = x mL
Therefore, the nurse should administer 10 mL of diphenhydramine elixir per dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Montelukast is a medicine used to treat and prevent asthma and allergic rhinitis. It can cause some side effects, such as stomach pain, headache, cough, or fever. However, some side effects are more serious and need to be reported to the provider.
According to the sources I found, the most serious side effect of montelukast that should be reported to the provider is depression. Depression is a mental health condition that can affect your mood, thoughts, and behavior. It can cause symptoms such as feeling sad, hopeless, or worthless; losing interest in activities you used to enjoy; having trouble sleeping or concentrating; or having thoughts of harming yourself or others.
Montelukast has been linked to neuropsychiatric events, such as agitation, aggression, sleep disturbances, suicidal thoughts and behavior (including suicide). The mechanisms underlying these events are not well understood, but they can occur at any time during treatment. Therefore, patients and caregivers should be alert for changes in behavior or new neuropsychiatric symptoms when taking montelukast. If these occur, they should discontinue montelukast and contact a healthcare provider immediately.
The other options are not listed as serious side effects of montelukast that need to be reported to the provider. Constipation, blurred vision, and palpitations are possible side effects of other medicines used to treat asthma or allergic rhinitis, such as corticosteroids, antihistamines, or beta-agonists. However, they are not specific to montelukast and may not be related to its use.
Correct Answer is C
Explanation
The sympathetic nervous system postganglionic neurons primarily release norepinephrine as their neurotransmitter. These neurons are part of the autonomic nervous system and are responsible for coordinating the body's "fight or flight" response to stress or danger.
Norepinephrine acts as a neurotransmitter at the postganglionic synapses and binds to adrenergic receptors in the target tissues, mediating the physiological responses associated with sympathetic activation.
While acetylcholine is the primary neurotransmitter released by the preganglionic neurons of the sympathetic nervous system, it is not the neurotransmitter released by postganglionic neurons. Epinephrine (also known as adrenaline) is released into the bloodstream by the adrenal medulla and acts as a hormone, not a neurotransmitter. Arginine is an amino acid and is not directly involved in the neurotransmission of the sympathetic nervous system.
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