ATI RN
ATI Capstone Pharmacology Assessment 2 Questions
Question 1 of 5
When administering heparin subcutaneously, the nurse will follow which procedure?
Correct Answer: D
Rationale: When administering heparin subcutaneously, the nurse should use a - to -inch needle. This needle length is appropriate for subcutaneous injections as it ensures the medication is being injected into the fatty tissue layer beneath the skin. Using a longer needle can result in the medication being injected too deeply, potentially causing complications. Additionally, the nurse should not aspirate the syringe before injecting the medication, massage the site after injection, or apply heat to the injection site when administering heparin subcutaneously.
Question 2 of 5
Drug action that increase body activity
Correct Answer: A
Rationale: Stimulants are drugs that increase the body's activity levels. They work on the central nervous system to enhance alertness, attention, and energy. Examples of stimulants include caffeine, amphetamines, and nicotine. Stimulants can increase heart rate, blood pressure, and metabolism, leading to heightened physical and mental activity.
Question 3 of 5
Which of the following describes the action of an agonist on a receptor.
Correct Answer: C
Rationale: An agonist is a substance that binds to a receptor and triggers a biological response. By activating the receptor, an agonist mimics the action of the body's natural ligand that typically binds to the receptor. This activation may lead to a cascade of events within the cell, resulting in a specific physiological response. In contrast, antagonists block the receptor from being activated, while agonists work by binding to the receptor and initiating the desired response.
Question 4 of 5
The nurse is caring for a patient receiving IV heparin therapy for treatment of a pulmonary embolus. The patient is being converted to warfarin (Coumadin) therapy. The following questions relate nursing considerations when caring for this patient. Nursing considerations for conversion of IV heparin to oral warfarin (Coumadin) therapy will include
Correct Answer: B
Rationale: When converting a patient from IV heparin to oral warfarin (Coumadin) therapy, overlapping therapy of both medications for at least 5 days is typically recommended. This overlap ensures that the patient's blood remains appropriately anticoagulated during the transition period. The effectiveness of warfarin is delayed and it takes time for the INR to reach the therapeutic range; therefore, it is important to continue the IV heparin until the INR is within the desired range. Monitoring the INR is essential to adjust the dosages of warfarin accordingly and to ensure that the patient is receiving adequate anticoagulation therapy.
Question 5 of 5
The nurse plans medication education for a client who receives a prescription for sildenafil (Viagra). What will the best plan by the nurse include?
Correct Answer: C
Rationale: Sildenafil (Viagra), a phosphodiesterase-5 inhibitor for erectile dysfunction, has a recommended dosing limit of one pill per 24 hours to prevent overdose risks like prolonged erections or cardiovascular strain, making this a critical safety instruction. Grapefruit juice actually increases sildenafil levels by inhibiting metabolism, not decreasing effects, which could heighten side effects. Timing is optimal at 1 hour before sex, with effectiveness possible up to 4 hours, not 6, ensuring accurate expectations. Taking it on an empty stomach enhances absorption, as food-especially high-fat meals-delays onset, contrary to the food suggestion. The 24-hour limit is foundational for safe use, balancing efficacy with minimizing adverse effects like headache or hypotension, and aligns with standard prescribing guidelines, making it the priority in client education.