ATI RN
ATI Pharmacology Proctored Exam 2019
1. In reviewing a client's health record, which condition would be a contraindication for using Propranolol to treat hypertension?
- A. Asthma
- B. Glaucoma
- C. Hypertension
- D. Tachycardia
Correct answer: A
Rationale: Propranolol is a nonselective beta-adrenergic blocker that blocks both beta1 and beta2 receptors. Blocking beta2 receptors in the lungs can lead to bronchoconstriction, making it unsuitable for clients with asthma. Therefore, asthma is a contraindication for taking Propranolol. Glaucoma, hypertension, and tachycardia are not contraindications for using Propranolol to treat hypertension.
2. A healthcare professional is preparing to administer heparin 15,000 units subcutaneously every 12 hr. The amount available is heparin injection 20,000 units/mL. How many mL should the healthcare professional administer per dose?
- A. 0.8 mL
- B. 0.75 mL
- C. 0.5 mL
- D. 1 mL
Correct answer: A
Rationale: To calculate the volume to administer, use the formula: (Desired dose / Concentration) = Volume to administer. In this case, (15,000 units / 20,000 units/mL) = 0.75 mL, which is rounded up to 0.8 mL. Therefore, the healthcare professional should administer 0.8 mL per dose of heparin. Choice B (0.75 mL) is incorrect as it is the exact calculated volume but needs to be rounded up. Choices C (0.5 mL) and D (1 mL) are incorrect as they do not reflect the correct calculated volume for the desired dose of heparin.
3. A client is receiving heparin therapy. Which of the following laboratory values should the nurse monitor to evaluate the effectiveness of the therapy?
- A. PT
- B. aPTT
- C. INR
- D. Platelet count
Correct answer: B
Rationale: The corrected answer is B: aPTT. The activated partial thromboplastin time (aPTT) is the laboratory value used to monitor the effectiveness of heparin therapy. The aPTT should be maintained at 1.5 to 2 times the normal level to ensure therapeutic anticoagulation. Monitoring aPTT helps healthcare providers adjust heparin doses to achieve the desired anticoagulant effects and prevent complications such as bleeding or clotting. Choice A, PT (prothrombin time), is used to monitor warfarin therapy, not heparin. Choice C, INR (international normalized ratio), is also used to monitor warfarin therapy. Choice D, platelet count, is important for assessing the risk of bleeding, but it does not directly monitor the effectiveness of heparin therapy.
4. A client has been prescribed Nitroglycerin patches for angina. Which of the following instructions should the nurse include during discharge teaching?
- A. Apply the patch to a different site each time.
- B. Remove the patch for 12 hours each day.
- C. Apply the patch at the same time every day.
- D. Cut the patch in half if your blood pressure is well controlled.
Correct answer: B
Rationale: The correct answer is B: 'Remove the patch for 12 hours each day.' Nitroglycerin patches should be removed for 12 hours each day to prevent the development of tolerance. This nitrate-free interval ensures the medication remains effective in managing angina. Choice A is incorrect because applying the patch to a different site each time is not necessary; it is more important to ensure a nitrate-free interval. Choice C is incorrect because while consistency in timing is good for medication adherence, the crucial aspect for Nitroglycerin patches is the nitrate-free interval. Choice D is incorrect because cutting the patch in half based on blood pressure control is not a recommended practice and could alter the medication's efficacy.
5. During an assessment, a male client who has recently started taking Haloperidol is displaying certain symptoms. Which of the following findings should the nurse prioritize in reporting to the provider?
- A. Shuffling gait
- B. Neck spasms
- C. Drowsiness
- D. Impotence
Correct answer: B
Rationale: Neck spasms are indicative of acute dystonia, a serious side effect of Haloperidol that requires urgent intervention. Immediate reporting to the provider is crucial to address this potentially harmful condition and ensure the client's safety. Shuffling gait, drowsiness, and impotence are important to monitor but do not pose the same level of immediate risk as acute dystonia. Acute dystonia can lead to serious complications if not promptly treated, making it the priority in this scenario.
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