ATI RN
Pathophysiology Practice Exam
1. What specific instructions should the nurse provide to ensure proper administration of alendronate (Fosamax) for the treatment of osteoporosis?
- A. Take the medication with a full glass of water and remain upright for at least 30 minutes.
- B. Take the medication at bedtime to ensure absorption during sleep.
- C. Take the medication with milk to enhance calcium absorption.
- D. Take the medication with food to prevent gastrointestinal upset.
Correct answer: A
Rationale: The correct answer is to take the medication with a full glass of water and remain upright for at least 30 minutes. This is important to prevent esophageal irritation and ensure proper absorption. Choice B is incorrect because alendronate should be taken in the morning on an empty stomach, at least 30 minutes before eating or drinking anything other than water. Choice C is incorrect because alendronate should not be taken with milk as it can interfere with its absorption. Choice D is incorrect because alendronate should be taken on an empty stomach, not with food.
2. In an adult patient suspected of having an androgen deficiency and considering treatment with testosterone, the use of testosterone would be most complicated by the presence of what preexisting health problem?
- A. Urinary incontinence
- B. BPH
- C. Chronic renal failure
- D. Type 2 diabetes
Correct answer: B
Rationale: The correct answer is BPH (Benign Prostatic Hyperplasia). Testosterone therapy can worsen symptoms of BPH by potentially increasing prostate size and stimulating the growth of prostate tissue. This can lead to complications such as urinary retention and the need for further medical interventions. Urinary incontinence (choice A) can have various causes but is not directly related to testosterone therapy. Chronic renal failure (choice C) and Type 2 diabetes (choice D) are not typically contraindications for testosterone therapy in the context of androgen deficiency.
3. The neurotransmitter GABA mainly functions to trigger inhibitory postsynaptic potentials (IPSPs). Therefore, when explaining this to a group of nursing students, the nurse will state:
- A. It takes at least three chemical substances (amino acids, neuropeptides, and monoamines) to stimulate any activity between the cells.
- B. There is a symbiotic relationship; therefore, the end result will be depolarization of the postsynaptic membrane.
- C. The combination of GABA with a receptor site is inhibitory since it causes the local nerve membrane to become hyperpolarized and less excitable.
- D. The neurotransmitters will interact with cholinergic receptors to bind to acetylcholine in order to produce hypopolarization within the cell.
Correct answer: C
Rationale: When GABA binds with a receptor site, it causes hyperpolarization of the local nerve membrane, making it less excitable. This hyperpolarization leads to inhibition of nerve cell activity. Choice A is incorrect because GABA is a neurotransmitter itself and does not require three chemical substances to stimulate activity between cells. Choice B is incorrect as GABA triggers inhibitory postsynaptic potentials (IPSPs), leading to hyperpolarization, not depolarization, of the postsynaptic membrane. Choice D is also incorrect as it describes a process involving cholinergic receptors and acetylcholine, which is unrelated to GABA's mechanism of action.
4. A patient with a history of venous thromboembolism is being considered for hormone replacement therapy (HRT). What should the nurse discuss with the patient regarding the risks of HRT?
- A. Discuss the potential for increased bone density.
- B. Discuss the potential for an increased risk of cardiovascular events.
- C. Discuss the potential for a reduced risk of breast cancer.
- D. Discuss the potential for improved mood and energy levels.
Correct answer: B
Rationale: The correct answer is B because hormone replacement therapy (HRT) is associated with an increased risk of cardiovascular events, including venous thromboembolism. Patients with a history of venous thromboembolism are at higher risk, so discussing this potential risk is crucial. Choice A, increased bone density, is not a major risk of HRT. Choice C, reduced risk of breast cancer, is not a common discussion point regarding HRT risks. Choice D, improved mood and energy levels, is more related to the benefits of HRT rather than its risks.
5. What part of the heart is responsible for starting the electrical impulse to conduct a heart rhythm and contraction of the atria and ventricles?
- A. The Purkinje fibers in the ventricles
- B. The right & left bundle branches
- C. The atrioventricular node
- D. The sinoatrial node in the atrium
Correct answer: D
Rationale: The sinoatrial node (SA node) in the atrium is indeed responsible for initiating the electrical impulse that starts the heart's rhythm. The SA node is known as the heart's natural pacemaker. Choices A, B, and C are incorrect because while the Purkinje fibers, bundle branches, and atrioventricular node play crucial roles in the conduction of the electrical impulse throughout the heart, the SA node is specifically responsible for initiating this impulse.
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