Question 1

During a routine checkup, a patient states that she is unable to take the prescribed antihistamine because of one of its most common adverse effects. The nurse suspects that which adverse effect has been bothering this patient?

A) Constipation
B) Abdominal cramps
C) Drowsiness
D) Decreased libido

Drowsiness

Accepted Answer

Drowsiness is usually the main side effect that bothers people who take antihistamines.

Question 2

A patient is taking guaifenesin (Humibid) as part of treatment for a sinus infection. Which instruction will the nurse include during patient teaching?&#10;A) Increase fluid intake to help loosen and liquefy secretions.&#10;B) Report clear-colored sputum to the prescriber.&#10;C) Avoid driving a car or operating heavy machinery because of the sedating effects.&#10;D) Report symptoms that last longer than 2 days.

Accepted Answer

Increasing fluid intake helps to loosen and liquefy secretions. The patient must be fully aware that any fever, chest tightness, change in sputum from clear to colored, difficult or noisy breathing, activity intolerance, or weakness needs to be reported. The patient must also report to the prescriber a fever of higher than 100.4° F (38° C) or symptoms that last longer than 3 to 4 days. Decongestants do not cause sedation, and therefore the patient does not need to avoid driving a car or operating heavy machinery.

Question 3

A patient will be receiving diphenhydramine (Benadryl) via a PEG tube, 25 mg, every 8 hours for an allergic rash. The medication is available as a 12.5 mg/5 mL syrup. Identify how many milliliters will the nurse administer with each dose. _______

10 mL
12.5 mg:5 mL :: 25 mg:x mL.
(12.5 × x) = (5 × 25); 15.5x = 125; x = 10 mL.

Accepted Answer

10 mL&#10;12.5 mg:5 mL :: 25 mg:x mL.&#10;(12.5 &#215; x) = (5 &#215; 25); 15.5x = 125; x = 10 mL.

Question 4

When teaching a patient who will be receiving antihistamines, the nurse will include which instructions?&#10;A) &#34;Antihistamines are generally safe to take with over-the-counter medications.&#34;&#10;B) &#34;Take the medication on an empty stomach to maximize absorption of the drug.&#34;&#10;C) &#34;Take the medication with food to minimize gastrointestinal distress.&#34;&#10;D) &#34;Drink extra fluids if possible.&#34;&#10;E) &#34;Antihistamines may cause restlessness and disturbed sleep.&#34;&#10;F) &#34;Avoid activities that require alertness until you know how adverse effects are tolerated.&#34;

Accepted Answer

Antihistamines should be taken with food, even though this slightly reduces the absorption of the drug, so as to minimize the gastrointestinal upset that can occur. Over-the-counter medications must not be taken with an antihistamine unless approved by the physician because of the serious drug interactions that may occur. Drinking extra fluids will help to ease the removal of secretions, and activities that require alertness, such as driving, must not be engaged in until the patient knows how he or she responds to the sedating effects of antihistamines.

Question 5

A child will be receiving diphenhydramine (Benadryl), 5 mg/kg/day, in divided doses, every 6 hours. The child weighs 80 pounds. Identify how many milligrams of medication will the child receive with each dose. (record answer using one decimal place) _______

Accepted Answer

The answer of A child will be receiving diphenhydramine (Benadryl),...

Question 6

A gardener needs a decongestant because of seasonal allergy problems and asks the nurse whether he should take an oral form or a nasal spray. Which of these is a benefit of orally administered decongestants?

A) Immediate onset
B) A more potent effect
C) Lack of rebound congestion
D) Shorter duration

Accepted Answer

Drugs administered by the oral route produce prolonged decongestant effects, but the onset of action is more delayed and the effect less potent than those of decongestants applied topically. However, the clinical problem of rebound congestion associated with topically administered drugs is almost nonexistent with oral dosage forms.

Question 7

A patient has been advised to add a nasal spray (an adrenergic decongestant) to treat a cold. The nurse will include which instruction?&#10;A) &#34;You won't see effects for at least 1 week.&#34;&#10;B) &#34;Limit use of this spray to 3 to 5 days.&#34;&#10;C) &#34;Continue the spray until nasal stuffiness has resolved.&#34;&#10;D) &#34;Avoid use of this spray if a fever develops.&#34;

Accepted Answer

Frequent, long-term, or excessive use of adrenergic nasal decongestants may lead to rebound congestion if used beyond the recommended time. The other instructions are incorrect.

Question 8

A patient asks the nurse about the uses of echinacea. Which use will the nurse include in the response?&#10;A) Memory enhancement&#10;B) Boosting the immune system&#10;C) Improving mood&#10;D) Promoting relaxation

Accepted Answer

Common uses of echinacea include stimulation of the immune system, antisepsis, treatment of viral infections and influenza-like respiratory tract infections, and promotion of the healing of wounds and chronic ulcerations. The other options are incorrect.

Question 9

A patient tells the nurse that she wants to start taking the herbal product goldenseal to improve her health. The nurse will assess for which potential cautions or contraindications to goldenseal?&#10;A) Taking a proton-pump inhibitor&#10;B) Nasal congestion&#10;C) Hypothyroidism&#10;D) Taking an antihypertensive drug&#10;E) Sinus infections&#10;F) Pregnancy

Accepted Answer

Goldenseal is contraindicated in patients with acute or chronic gastrointestinal disorders and during pregnancy (because it has uterine stimulant properties). It should be used with caution by those with cardiovascular disorders. Potential drug interactions may occur with gastric acid suppressors such as antacids, histamine H₂ blockers (e.g., ranitidine), and proton-pump inhibitors (e.g., omeprazole), theoretically because of their reduced effectiveness resulting from the acid-promoting effect of the herb, and with antihypertensive drugs (because of the vasoconstrictive activity of the herb). Goldenseal is potentially useful for sinus infections and chronic nasal allergies.

Question 10

When giving dextromethorphan, the nurse understands that this drug suppresses the cough reflex by which mechanism of action?&#10;A) Causing depression of the central nervous system&#10;B) Anesthetizing the stretch receptors&#10;C) Having direct action on the cough center&#10;D) Decreasing the viscosity of the bronchial secretions

Accepted Answer

Dextromethorphan suppresses the cough reflex through a direct action on the cough center. The other options are incorrect.

Question 11

The nurse will instruct patients about a possible systemic effect that may occur if excessive amounts of topically applied adrenergic nasal decongestants are used. Which systemic effect may occur?&#10;A) Heartburn&#10;B) Bradycardia&#10;C) Drowsiness&#10;D) Palpitations

Accepted Answer

The answer of The nurse will instruct patients about a...

Question 12

A patient with a tracheostomy has difficulty removing excessive, thick mucus from the respiratory tract. The nurse expects that which drug will be ordered to aid in the removal of mucus?&#10;A) Guaifenesin (Mucinex)&#10;B) Benzonatate (Tessalon Perles)&#10;C) Diphenhydramine (Benadryl)&#10;D) Dextromethorphan (Robitussin DM)

Accepted Answer

The answer of A patient with a tracheostomy has difficulty...

Deck 36: Antihistamines, Decongestants, Antitussives, and Expectorants