NR 565 Advanced Pharmacology Fundamentals
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Free NR 565 Advanced Pharmacology Fundamentals Questions
Which class of medication can lead to pneumonia, fractures, rebound acid hypersecretion, hypomagnesemia, and diarrhea?
- H2 receptor agonists
- Anti-diarrheal
- Proton pump inhibitors
- Antacids
Explanation
Correct Answer: C. Proton pump inhibitors
Explanation of Correct Answer
Proton pump inhibitors (PPIs) are associated with several adverse effects when used long-term. By suppressing gastric acid production, they increase the risk of pneumonia due to bacterial overgrowth in the upper GI tract, impair calcium absorption leading to fractures, and can cause rebound acid hypersecretion upon discontinuation. They may also lead to hypomagnesemia and gastrointestinal disturbances such as diarrhea. These risks make careful monitoring and appropriate duration of therapy essential.
An elderly woman with a recent history of myocardial infarction is seeking a medication to help treat her occasional heartburn. She is currently taking several medications, including aspirin, clopidogrel, simvastatin, metoprolol, and lisinopril. Which of the following drugs should be avoided in this patient?
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Calcium carbonate
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Famotidine
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Omeprazole
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Nizatidine
Explanation
Correct Answer:
C. Omeprazole
Explanation of Correct Answer
Omeprazole, a proton pump inhibitor (PPI), inhibits the CYP2C19 enzyme, which is essential for the activation of clopidogrel, an antiplatelet medication critical after myocardial infarction. Using omeprazole with clopidogrel reduces clopidogrel’s effectiveness, increasing the risk of stent thrombosis or recurrent cardiac events. Safer alternatives for heartburn in this patient include H2 receptor antagonists such as famotidine or nizatidine, or calcium carbonate as an antacid. Therefore, omeprazole should be avoided in this scenario.
When should a TSH level be drawn after adjusting the dose of levothyroxine?
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after 24 months
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within 6-8 weeks
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at least once a year
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the following week
Explanation
Correct Answer:
B. within 6-8 weeks
Explanation of Correct Answer
TSH levels should be checked within 6–8 weeks after adjusting the dose of levothyroxine because thyroid hormone has a long half-life, and it takes several weeks for levels to stabilize and reflect the new steady state. Checking too early, such as within a week, would not provide accurate information. Once the patient is stable on a maintenance dose, TSH is typically monitored annually unless clinical symptoms or medication changes warrant earlier testing.
Which of the following therapeutic options for COPD acts by inhibiting phosphodiesterase-4?
- Dupilumab
- Roflumilast
- Salmeterol
- Tiotropium
Explanation
Correct Answer: B. Roflumilast
Explanation of Correct Answer
Roflumilast is an oral phosphodiesterase-4 (PDE-4) inhibitor used in the management of severe COPD with chronic bronchitis and a history of frequent exacerbations. By inhibiting PDE-4, it reduces inflammation in the airways and helps prevent flare-ups, though it is not a bronchodilator. Salmeterol is a long-acting beta-2 agonist (LABA), tiotropium is a long-acting muscarinic antagonist (LAMA), and dupilumab is a monoclonal antibody used for asthma and atopic conditions, not COPD.
Which of the following statements is not true regarding sulfonylureas?
-
Sulonlyreas are safe to prescribe to pregnant and/or breast-feeding women
-
Patients should be educated about signs and symptoms of hypoglycemia.
-
Sulfonylureas cause a dose-dependent reduction in blood glucose.
-
Sulfonylureas are indicated for only patients diagnosed with type 2 diabetes.
Explanation
Correct Answer:
A. Sulonlyreas are safe to prescribe to pregnant and/or breast-feeding women.
Explanation of Correct Answer
Sulfonylureas are not considered safe during pregnancy or breastfeeding because of the risk of neonatal hypoglycemia and potential drug transfer through breast milk. Insulin is the preferred treatment in pregnant or breastfeeding diabetic women. Sulfonylureas stimulate insulin release regardless of blood glucose, which can harm the infant if passed on. Therefore, the claim that they are safe in this population is false.
Why should PPIs be avoided for older adults when treating GERD?
- Risk for fractures
- Too expensive
- Polypharmacy
- Hypotension
Explanation
Correct Answer: A. Risk for fractures
Explanation of Correct Answer
Proton pump inhibitors (PPIs) should be used with caution in older adults because long-term use is associated with decreased calcium absorption, leading to osteoporosis and an increased risk of bone fractures, particularly hip, wrist, and spine fractures. While polypharmacy is a general concern in the elderly, the specific reason PPIs are avoided or carefully monitored in this population is their direct effect on bone health. Hypotension and cost are not primary concerns with PPIs.
During a physical assessment, a patient reports difficulty falling asleep, increased weightloss despite having an increased appetite, feeling increasingly anxious, and noticing their eyes bulging. Which diagnosis should the NP consider?
-
Hashimoto's Disease
-
Hypothyroidism
-
Hyperthyroidism
-
Addision's Disease
Explanation
Correct Answer:
C. Hyperthyroidism
Explanation of Correct Answer
Hyperthyroidism presents with symptoms of increased metabolism, including unintentional weight loss despite increased appetite, anxiety, and insomnia. Exophthalmos, or bulging eyes, is a hallmark sign of Graves’ disease, the most common cause of hyperthyroidism. These findings clearly distinguish hyperthyroidism from hypothyroidism, which causes fatigue, weight gain, and cold intolerance. Hashimoto’s disease typically leads to hypothyroidism, while Addison’s disease involves adrenal insufficiency with symptoms like hyperpigmentation, hypotension, and electrolyte disturbances.
The mechanism of action of insulin is best described as
-
Reduces the reabsorption of glucose, increasing urinary excretion of glucose.
-
Anabolic, energy conservation, and promotes cellular growth and division.
-
Reduces glucose levels primarily by decreasing insulin resistance
-
Promotes insulin secretion by the pancreas.
Explanation
Correct Answer:
B. Anabolic, energy conservation, and promotes cellular growth and division.
Explanation of Correct Answer
Insulin is an anabolic hormone that facilitates glucose uptake into muscle and adipose tissue, promotes glycogen storage in the liver, and supports fat and protein synthesis. Its overall role is to conserve energy and promote cellular growth and repair. By lowering circulating glucose and shifting nutrients into cells, insulin ensures energy is stored for future use while also promoting growth and tissue maintenance. This anabolic effect is the hallmark of insulin’s mechanism of action.
Gastrointestinal symptoms are common and require NPs to appropriately diagnose and manage these issues. Which of the following statements are true?
- Proton pump inhibitors are the more effective medicine for gastro-esophageal reflux, but have long term concerns which can be weighed against procedural solutions.
- Tobacco has many downsides but is good for GERD
- Laxatives are something patients only take when they need it and pose no concern for self management
- Lifestyle changes cannot help irritable bowel syndrome, constipation, or GERD
Explanation
Correct Answer: A. Proton pump inhibitors are the more effective medicine for gastro-esophageal reflux, but have long term concerns which can be weighed against procedural solutions.
Explanation of Correct Answer
Proton pump inhibitors (PPIs) are the most effective medications for treating GERD, but long-term use is associated with risks such as fractures, hypomagnesemia, infections, and rebound acid hypersecretion. Therefore, their risks must be weighed against the benefits and, in some cases, procedural interventions like fundoplication. Tobacco actually worsens GERD, chronic laxative use can cause dependence and electrolyte imbalance, and lifestyle changes (diet, exercise, stress reduction) are effective in managing IBS, constipation, and GERD.
Your breastfeeding patient reports constipation and requests for relief medication. Which medication should be considered?
-
Senna
-
Colace
-
Mineral Oil
-
Miralax
Explanation
Correct Answer:
B. Colace
Explanation of Correct Answer
Colace (docusate sodium) is considered safe for use in breastfeeding patients. It is a stool softener that works by increasing water and fat penetration into the stool, making it easier to pass without significant systemic absorption, thus posing minimal risk to the infant. Senna may cause loose stools in infants, mineral oil can interfere with absorption of fat-soluble vitamins, and while Miralax (PEG 3350) is generally safe, Colace is preferred due to its long-standing safety record in breastfeeding.
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