♠️ Giardiasis is an intestinal infection caused by the protozoan parasite Giardia duodenalis (lamblia).

♠️ Infection commonly occurs after ingestion of contaminated water or food, including during international travel.

♠️ Typical manifestations include diarrhea, abdominal cramping, bloating, flatulence, and foul-smelling or greasy stools.

♠️ Metronidazole is an antiprotozoal medication commonly used to eradicate Giardia infection.

♠️ Treating the underlying parasite is more important than simply suppressing diarrhea or abdominal cramping.

♠️ The client should be instructed to avoid alcohol during treatment and for at least 3 days after the last dose because of the potential for an adverse reaction.

♠️ Maintaining adequate fluid and electrolyte replacement is also important because persistent diarrhea can cause dehydration.

♠️ Effective antimicrobial treatment eliminates the causative organism and helps prevent continued intestinal symptoms and transmission.

✅ Fluticasone

🌹 Fluticasone is an inhaled corticosteroid used as a controller medication for asthma.

🌹 It reduces chronic airway inflammation and hyperresponsiveness.

🌹 Regular use helps decrease the frequency and severity of asthma symptoms.

🌹 Inhaled corticosteroids can promote oral candidiasis (thrush) because medication can remain deposited in the mouth.

🌹 Thrush can appear as white patches or plaques on the tongue and oral mucosa.

🌹 Using a spacer when appropriate and rinsing the mouth after inhalation helps reduce this adverse effect.

🌹 Fluticasone should be taken regularly as prescribed rather than used solely for immediate relief of acute bronchospasm.

🌹 The history of asthma followed by oral fungal growth therefore corresponds with fluticasone.

✅ Nystatin

🌹 Nystatin is an antifungal medication commonly used to treat oral candidiasis.

🌹 It acts locally against susceptible Candida organisms in the mouth.

🌹 Oral candidiasis can occur after inhaled corticosteroid therapy because corticosteroids suppress local immune defenses.

🌹 The medication is commonly administered as an oral suspension for oral thrush.

🌹 The client should distribute the medication throughout the mouth as prescribed to maximize contact with affected tissues.

🌹 Therapy should be completed for the prescribed duration even when symptoms begin improving.

🌹 Improvement should include decreasing white oral lesions, soreness, and irritation.

🌹 The medication given for the fungal growth on the tongue therefore corresponds with nystatin.

✅ Acyclovir

🌹 Acyclovir is an antiviral medication used to treat infections caused by herpes viruses.

🌹 It inhibits viral DNA replication and decreases the duration and severity of outbreaks.

🌹 Acyclovir controls herpes infection but does not permanently eliminate the virus from the body.

🌹 Gastrointestinal adverse effects can include nausea, vomiting, diarrhea, and abdominal discomfort.

🌹 Adequate hydration is particularly important because acyclovir can also cause renal toxicity, especially under certain clinical circumstances.

🌹 Renal function and hydration status should be considered during treatment when clinically indicated.

🌹 The medication should be taken exactly according to the prescribed antiviral regimen.

🌹 The client's medication used for herpes therefore corresponds with acyclovir.

✅ Polyethylene glycol

🌹 Polyethylene glycol (PEG) is an osmotic laxative commonly incorporated into bowel-preparation regimens before colonoscopy.

🌹 It promotes movement of water through the gastrointestinal tract and facilitates bowel evacuation.

🌹 Effective bowel cleansing allows the provider to adequately visualize the colon during colonoscopy.

🌹 Large-volume bowel preparations can cause nausea, bloating, abdominal fullness, and cramping.

🌹 The client should follow the prescribed preparation instructions carefully because inadequate preparation can reduce examination quality.

🌹 Chilling the solution or using other permitted strategies may make the preparation easier to tolerate.

🌹 Significant vomiting or inability to complete the preparation should be reported according to the procedural team's instructions.

🌹 The liquid prescribed to prepare the bowel for the colonoscopy therefore corresponds with polyethylene glycol.

✅ Ondansetron [Zofran]

🧡 Ondansetron is a 5-HT₃ serotonin receptor antagonist commonly used to prevent and treat nausea and vomiting.

🧡 It blocks serotonin receptors in the chemoreceptor trigger zone and gastrointestinal tract.

🧡 Ondansetron is particularly effective for nausea and vomiting associated with chemotherapy, radiation therapy, and surgery.

🧡 It can therefore be especially useful for clients undergoing treatment for cancer.

🧡 Common adverse effects include headache, constipation, and dizziness.

🧡 An important potential adverse effect is QT-interval prolongation, particularly in clients with additional cardiac risk factors.

🧡 The nurse should assess the frequency and severity of nausea and vomiting to evaluate the client's response to therapy.

🧡 Its direct action on serotonin-mediated vomiting pathways makes ondansetron an effective antiemetic medication.

✅ Metoclopramide [Reglan]

🧡 Metoclopramide has both antiemetic and gastrointestinal prokinetic effects.

🧡 It primarily blocks dopamine receptors in the chemoreceptor trigger zone, reducing stimulation of the vomiting center.

🧡 It also increases gastric emptying and gastrointestinal motility, which can decrease nausea associated with delayed gastric emptying.

🧡 Metoclopramide can be used for certain forms of nausea and vomiting, including treatment-related symptoms.

🧡 The nurse should monitor for extrapyramidal symptoms, including dystonia, akathisia, and involuntary movements.

🧡 Long-term or high cumulative exposure increases the risk for tardive dyskinesia.

🧡 New involuntary movements should be recognized and reported promptly.

🧡 Its dopamine-blocking activity and prokinetic effects make metoclopramide an appropriate antiemetic.

♦️ Docusate sodium is a stool softener that allows water and fat to penetrate the stool, making it softer and easier to pass.

♦️ It is appropriate for a hospitalized client experiencing mild constipation without severe pain or signs of acute obstruction.

♦️ The client has not had a bowel movement for 3 days but reports only mild abdominal discomfort, making a gentle approach appropriate.

♦️ Docusate does not produce the strong intestinal contractions associated with stimulant laxatives.

♦️ Softer stool decreases the amount of straining required during defecation.

♦️ Adequate fluid intake, mobility, and dietary fiber should also be encouraged when clinically appropriate.

♦️ The nurse should continue assessing bowel sounds, abdominal distention, flatus, and bowel movements, particularly because the client has colon cancer.

♦️ Increasing distention, vomiting, inability to pass flatus, or worsening abdominal pain would raise concern for bowel obstruction and require further evaluation before administering laxatives.

🖊️ Black hairy tongue (lingua villosa nigra) is usually a benign condition caused by elongation and accumulation of keratin on the filiform papillae of the tongue.

🖊️ Certain medications, particularly some antibiotics, can contribute by altering the normal oral microbial flora.

🖊️ The elongated papillae trap bacteria, yeast, food particles, and pigments, producing the characteristic black or dark hairy appearance.

🖊️ The nurse should review the client's medications and notify the provider about the new adverse effect.

🖊️ The provider may determine whether the suspected antibiotic should be changed or discontinued, depending on the infection and available alternatives.

🖊️ The client should also receive meticulous oral hygiene, including gentle brushing or scraping of the tongue when appropriate.

🖊️ Black hairy tongue is generally reversible after removal of the precipitating factor and improvement in oral hygiene.

🖊️ Recognition of this medication-associated effect allows appropriate management without incorrectly treating it as liver failure or a medical emergency.

🖍️ Vancomycin is an antibiotic commonly used to treat serious infections caused by methicillin-resistant Staphylococcus aureus (MRSA).

🖍️ MRSA is resistant to methicillin and most conventional beta-lactam antibiotics, making antibiotic selection particularly important.

🖍️ A pressure injury infected with MRSA can progress to cellulitis, bacteremia, osteomyelitis, or sepsis if the infection becomes invasive.

🖍️ Systemic vancomycin is appropriate when the MRSA wound infection is sufficiently severe to require systemic antimicrobial therapy.

🖍️ The nurse should monitor renal function because vancomycin can cause nephrotoxicity, particularly with higher exposure or other nephrotoxic medications.

🖍️ Vancomycin exposure may be monitored using AUC-guided monitoring or serum levels according to the clinical situation and facility protocol.

🖍️ Infusing IV vancomycin too rapidly can cause a vancomycin infusion reaction, characterized by flushing, erythema, pruritus, and sometimes hypotension.

🖍️ Culture and susceptibility results should ultimately guide antimicrobial therapy to ensure effective treatment of the client's MRSA infection.

✅ Stops the medication

🖍️ The sudden development of itchy hives and shortness of breath shortly after starting an IV medication strongly suggests an acute hypersensitivity reaction/anaphylaxis.

🖍️ The nurse's first action is to stop the offending medication immediately to prevent further exposure to the allergen.

🖍️ The IV access should generally be maintained with compatible IV fluid and new tubing as appropriate so emergency medications can be administered rapidly.

🖍️ Continuing or merely slowing the medication could worsen the allergic reaction and increase exposure to the triggering agent.

🖍️ The nurse should rapidly assess the client's airway, breathing, circulation, oxygen saturation, and vital signs.

🖍️ Respiratory manifestations can rapidly progress to bronchospasm, laryngeal edema, and severe hypoxemia.

🖍️ Additional emergency assistance should be activated according to the client's clinical condition and facility protocol.

🖍️ Immediate discontinuation of the suspected medication therefore limits further exposure while treatment for anaphylaxis begins.

✅ Epinephrine

🖍️ Epinephrine is the first-line medication for anaphylaxis because it rapidly treats life-threatening respiratory and cardiovascular manifestations.

🖍️ Its beta₂-adrenergic effects relax bronchial smooth muscle and improve airflow.

🖍️ Its alpha₁-adrenergic effects produce vasoconstriction, helping increase blood pressure and reduce mucosal edema.

🖍️ Beta₁ stimulation increases heart rate and myocardial contractility, supporting cardiac output during severe reactions.

🖍️ Epinephrine should be administered promptly because delaying treatment can allow anaphylaxis to progress rapidly.

🖍️ Antihistamines can help control itching and urticaria but do not adequately reverse airway obstruction or cardiovascular collapse.

🖍️ Oxygen and additional supportive interventions may also be required depending on the client's respiratory status.

🖍️ The presence of hives plus respiratory difficulty makes epinephrine the priority pharmacologic treatment.

✅ Bronchodilation

🖍️ Epinephrine stimulates beta₂-adrenergic receptors in bronchial smooth muscle.

🖍️ Beta₂ stimulation causes relaxation of bronchial smooth muscle, producing bronchodilation.

🖍️ Bronchodilation increases airway diameter and decreases resistance to airflow.

🖍️ This effect helps reverse the wheezing, bronchospasm, and shortness of breath associated with anaphylaxis.

🖍️ Epinephrine simultaneously reduces airway edema through its alpha₁-mediated vasoconstrictive effects.

🖍️ These combined actions rapidly improve ventilation and oxygenation during a severe allergic reaction.

🖍️ Antihistamines alone cannot provide the same rapid reversal of bronchospasm.

🖍️ Bronchodilation is therefore the specific listed action that directly improves the client's acute respiratory compromise.

✅ Non-steroidal anti-inflammatory drugs (NSAIDs) for chronic arthritis

♦️ Chronic NSAID use in a 92-year-old client should be questioned because older adults have an increased risk of serious adverse effects.

♦️ NSAIDs can damage the gastric mucosa and increase the risk of peptic ulcer disease and gastrointestinal bleeding.

♦️ Older adults are particularly vulnerable because age-related physiologic changes reduce protective mechanisms within the gastrointestinal tract.

♦️ NSAIDs can also decrease renal blood flow and contribute to acute kidney injury or worsening chronic kidney disease.

♦️ Sodium and water retention can worsen hypertension, edema, and heart failure in susceptible clients.

♦️ Prolonged NSAID therapy therefore requires careful evaluation of gastrointestinal, renal, and cardiovascular risks.

✅ Hydroxyzine for seasonal allergies

♦️ Hydroxyzine is a first-generation antihistamine with strong anticholinergic and sedating effects.

♦️ Older adults are more sensitive to anticholinergic medications because of age-related changes in drug metabolism and central nervous system function.

♦️ Hydroxyzine can cause confusion, sedation, blurred vision, dry mouth, and urinary retention.

♦️ Sedation and impaired coordination substantially increase the risk of falls and fractures.

♦️ Anticholinergic medications can also worsen constipation and cognitive impairment in vulnerable older adults.

♦️ A less sedating medication with fewer anticholinergic effects is generally preferred when appropriate.

✅ Antispasmodic medication for irritable bowel syndrome

♦️ Many gastrointestinal antispasmodic medications have significant anticholinergic activity.

♦️ Anticholinergic effects can cause dry mouth, constipation, urinary retention, blurred vision, and confusion.

♦️ Older adults are particularly susceptible to central nervous system effects such as delirium and cognitive impairment.

♦️ Reduced gastrointestinal motility can also worsen constipation, which is already common in advanced age.

♦️ Dizziness and blurred vision can increase the client's risk for falls and injury.

♦️ The medication should therefore be reviewed carefully to determine whether a safer alternative is available.