ATI RN
ATI Pharmacology Proctored Exam 2023
1. While caring for a client receiving Heparin therapy, which of the following laboratory tests should the nurse monitor to evaluate the effectiveness of the therapy?
- A. PT
- B. INR
- C. aPTT
- D. Platelet count
Correct answer: C
Rationale: The nurse should monitor the aPTT (activated partial thromboplastin time) when caring for a client receiving Heparin therapy. The aPTT reflects the intrinsic pathway of the clotting cascade and is used to monitor the effectiveness of heparin, which primarily affects this pathway by potentiating antithrombin III. Monitoring the aPTT helps ensure that the client's blood is within the therapeutic range to prevent thrombus formation. Choices A, B, and D are incorrect. PT (Prothrombin Time) and INR (International Normalized Ratio) are used to monitor Warfarin therapy, not Heparin. Platelet count is important in assessing for thrombocytopenia but is not a specific indicator of Heparin therapy effectiveness.
2. A client who has been taking prednisone to treat asthma is advised to discontinue the medication. The client should be instructed to reduce the dose gradually to prevent which of the following adverse effects?
- A. Hyperglycemia
- B. Adrenocortical insufficiency
- C. Severe dehydration
- D. Rebound pulmonary congestion
Correct answer: B
Rationale: Abruptly stopping prednisone can result in adrenocortical insufficiency due to suppression of the adrenal glands. Gradually tapering the dose helps the body adjust and resume its natural cortisol production, preventing adrenal insufficiency. Choice A, hyperglycemia, is a possible adverse effect of prednisone, but it is not the primary reason for gradual tapering. Severe dehydration (Choice C) and rebound pulmonary congestion (Choice D) are not typically associated with discontinuing prednisone.
3. Which part of the body requires a continuous supply of oxygen and vital nutrients to support life and death?
- A. Liver
- B. Kidneys
- C. Brain
- D. Muscles
Correct answer: C
Rationale: The brain requires a continuous supply of oxygen and vital nutrients to support life and prevent death. Oxygen and nutrients are essential for brain function, and any interruption in the supply can lead to serious consequences, including brain damage or death. Therefore, ensuring a constant flow of oxygen and nutrients to the brain is vital for survival and overall health.
4. A client with increased liver enzymes is taking herbal supplements. Which of the following herbal supplements should the nurse report to the provider?
- A. Glucosamine
- B. Saw palmetto
- C. Kava
- D. St. John's wort
Correct answer: C
Rationale: Chronic use or high doses of kava have been associated with liver damage, including severe liver failure. Therefore, the nurse should report the client's use of kava to the healthcare provider for further evaluation and management.
5. A client with Graves' disease is being taught about her prescribed medications. Which of the following statements by the client indicates an understanding of the use of Propranolol in the treatment of Graves' disease?
- A. Propranolol helps increase blood flow to my thyroid gland.
- B. Propranolol is used to prevent excess glucose in my blood.
- C. Propranolol will decrease my tremors and fast heart rate.
- D. Propranolol promotes a decrease in thyroid hormone in my body.
Correct answer: C
Rationale: The correct answer is C. Propranolol is a beta-adrenergic antagonist that helps decrease heart rate and control tremors in individuals with Graves' disease. It does not increase blood flow to the thyroid gland (choice A), prevent excess glucose in the blood (choice B), or directly decrease thyroid hormone levels in the body (choice D). Propranolol's primary role in Graves' disease is to alleviate symptoms like tremors and fast heart rate by blocking the effects of excessive thyroid hormone, rather than reducing the actual levels of thyroid hormone in the body.
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