RN exams pharmacology practice questions set 17

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Anabolic steroids, synthetic testosterone derivatives, suppress natural hormone production, including spermatogenesis, leading to infertility-a critical risk for young athletes to understand. They also impact the entire body, notably causing liver damage (e.g., hepatotoxicity or tumors), a systemic effect worth noting. However, while effective for muscle growth, weight training surpasses steroids in safety and sustainability, debunking the ‘most effective' claim. Aggression, or ‘roid rage,' is a well-documented behavioral change due to hormonal imbalance, making it another key point. Infertility stands out in education, as it's a direct, long-term consequence tied to reproductive health, resonating with teens' future planning, and is supported by evidence of testicular atrophy and reduced sperm count, distinguishing it from broader effects or myths about efficacy.

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The correct answer is C because data validation involves comparing data with other sources to ensure accuracy. This process helps in identifying any discrepancies or errors in the data. By cross-referencing with other sources, the nurse can verify the correctness of the data. Rationale: 1. Data validation checks the accuracy of the data by comparing it with external sources. 2. Data interpretation involves analyzing and making sense of the data, not comparing it with other sources. 3. Option A is incorrect because data validation typically comes after data collection and precedes data interpretation. 4. Option B is incorrect as validation does not specifically involve looking for patterns in professional standards. 5. Option D is incorrect because data interpretation focuses on understanding trends and insights from the data, not patterns in professional standards.

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The correct initial action is to choose C: Ask the patient about the facial grimacing with movement. This is important as the patient's non-verbal cues (facial grimacing) contradict their verbal pain report. By directly addressing the discrepancy, the nurse can gather more accurate information about the patient's pain experience and potentially identify any underlying issues causing the discrepancy. Proceeding to the next patient's room (A) without addressing the discrepancy would neglect the patient's needs. Assuming the patient does not want pain medicine (B) based solely on the verbal report without further assessment is premature. Administering pain medication (D) without clarifying the situation may lead to inappropriate or ineffective treatment. Therefore, option C is the most appropriate initial action to ensure comprehensive and individualized patient care.

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The correct term for the patient's unusual reaction is "C: Idiosyncratic reaction." This is because an idiosyncratic reaction is an unexpected and individual response to a medication that is not related to the known pharmacological actions of the drug. In this case, the patient's agitated behavior and paranoia are not typical side effects of steroids but rather a unique reaction specific to this individual. A: Desired action is incorrect because the patient's symptoms are not the intended therapeutic effect of the steroid. B: Adverse effect is incorrect because adverse effects are known and expected side effects of a medication, not unusual or unexpected reactions like in this scenario. D: Allergic reaction is incorrect because the patient's symptoms are not consistent with an allergic response, which typically involves rash, itching, or difficulty breathing.

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The correct answer is C: Blocking muscarinic receptors in the airways. Ipratropium is an anticholinergic medication that works by blocking muscarinic receptors, leading to bronchodilation in patients with COPD. This mechanism of action reduces bronchoconstriction and improves airflow. A: Relaxing bronchial smooth muscle by stimulating beta-2 adrenergic receptors is incorrect because ipratropium does not act on beta-2 adrenergic receptors. B: Inhibiting the enzyme that breaks down acetylcholine in the lungs is incorrect as ipratropium does not affect the breakdown of acetylcholine. D: Inhibiting the release of histamine from mast cells is incorrect because ipratropium does not target histamine release. In summary, the correct answer is C because ipratropium's mechanism of action involves blocking muscarinic receptors to achieve bronchodilation in COPD patients

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The correct answer is C: Decreased gastric blood flow. In older adults, there is a decrease in gastric blood flow, which results in reduced absorption of oral drugs. This is due to age-related changes in the gastrointestinal system, leading to a decrease in blood flow to the stomach. This slowed blood flow affects the delivery of drugs to the site of absorption, resulting in slower absorption rates. Incorrect choices: A: Decreased cardiac output - While decreased cardiac output can affect overall drug distribution in the body, it does not directly impact the absorption of oral drugs in the stomach. B: Increased gastric emptying time - This would result in faster absorption, not slower absorption. D: Increased gastric acid secretion - While excessive gastric acid secretion can affect drug absorption, it does not explain the slower absorption in older adults.

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The correct answer is D because antitussive drugs are used to suppress coughing. In the case of a patient who has developed bronchitis 2 days after abdominal surgery, coughing can be painful and may strain the surgical site. Therefore, using antitussive drugs to reduce the coughing can help prevent complications and promote healing post-surgery. A, B, and C are incorrect: A: Antitussive drugs are not appropriate for a patient with pneumonia and productive cough because coughing helps clear the airways of excess mucus. B: Antitussive drugs are not suitable for a patient with a tracheostomy and thick mucus secretions as coughing helps clear the secretions and prevent infections. C: Antitussive drugs are not indicated for a patient with a productive cough for 2 weeks as this may be a sign of an underlying condition that needs to be addressed rather than suppressed.

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Nystatin is an antifungal used for oral candidiasis (thrush), and its effectiveness depends on proper administration. For oral infections, the medication must remain in contact with the affected mucosal surfaces as long as possible. Dissolving the tablet in the mouth ensures prolonged exposure to the fungus, allowing it to act locally before swallowing, which is the recommended method for tablets or lozenges. Using a straw might apply to suspensions but isn't standard for preventing discoloration, which isn't a primary concern with nystatin. Crushing and mixing with juice alters the drug's intended delivery, reducing contact time with the infection site. Swallowing whole bypasses the oral mucosa entirely, rendering it ineffective for thrush. Thus, choice A aligns with nystatin's mechanism, ensuring optimal therapeutic outcomes through direct mucosal contact.

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Lithium, used for bipolar disorder, is a salt processed by the kidneys, which also regulate sodium. Low sodium levels (e.g., from reduced table salt intake) cause the kidneys to conserve lithium instead, increasing serum levels and risking toxicity—symptoms like tremors, confusion, or seizures. Choice B correctly explains this mechanism: adequate sodium intake (via table salt) prevents lithium retention, maintaining therapeutic levels. Choice A confuses the issue with sea salt, which isn't clinically distinct here. Choice C inaccurately suggests adjusting salt reactively, risking toxicity first. Choice D downplays salt's role compared to hydration, which, while important, doesn't negate sodium's necessity. The nurse must clarify that consistent sodium intake is essential for lithium's safe metabolism, making choice B the most accurate and educational response.

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Step-by-step rationale for why choice C (Bemegride) is correct: 1. Bemegride is a respiratory analeptic that stimulates the respiratory center in the brain. 2. It acts as a central nervous system stimulant, specifically targeting the respiratory system. 3. Bemegride is used to treat respiratory depression caused by drug overdose or anesthesia. 4. It helps increase respiratory rate and tidal volume by stimulating the brainstem. 5. Therefore, Bemegride is the correct choice as a respiratory analeptic. Summary of why other choices are incorrect: A: Piracetam is a nootropic drug that enhances cognitive function, not a respiratory analeptic. B: Sydnocarb is a psychostimulant used for attention deficit disorders, not a respiratory analeptic. D: Pantocrin is a medication derived from deer antlers used for various health benefits, not a respiratory analeptic.