ATI RN
ATI Pharmacology Proctored Exam 2019
1. A healthcare professional is preparing to administer dextrose 5% in water (D5W) 750 mL IV to infuse over 6 hr. How many mL/hr should the IV pump be set to deliver?
- A. 125 mL/hr
- B. 100 mL/hr
- C. 150 mL/hr
- D. 200 mL/hr
Correct answer: A
Rationale: To calculate the flow rate, divide the total volume by the total time: 750 mL / 6 hr = 125 mL/hr. Therefore, the IV pump should be set to deliver 125 mL/hr to infuse D5W 750 mL over 6 hours. Choice B (100 mL/hr) is incorrect because it does not accurately divide the total volume by the total time. Choice C (150 mL/hr) and Choice D (200 mL/hr) are incorrect as they are not the correct flow rates needed to infuse the D5W solution over the specified time period.
2. What is the primary consideration of susceptibility to infections in neonates?
- A. Increased humoral immunity
- B. Overwhelming anti-inflammatory response
- C. Diminished nonspecific and specific immunity
- D. Excessive levels of immunoglobulin A and immunoglobulin M
Correct answer: C
Rationale: The primary consideration of susceptibility to infections in neonates is their diminished nonspecific and specific immunity. Neonates lack the ability to mount a robust immune response, making them vulnerable to infections. Choice A is incorrect because neonates do not have increased humoral immunity; rather, their humoral immunity is diminished. Choice B is incorrect as neonates do not have an overwhelming anti-inflammatory response; instead, their immune responses are generally weakened. Choice D is incorrect because neonates have diminished or absent levels of immunoglobulin A and immunoglobulin M, contributing to their susceptibility to infections.
3. A client with a new diagnosis of type 2 diabetes mellitus is being taught about foot care by a nurse. Which of the following instructions should the nurse include?
- A. Soak your feet in warm water daily.
- B. Wear shoes that are one size larger than your normal size.
- C. Wear cotton socks to keep your feet dry.
- D. Trim your toenails straight across.
Correct answer: D
Rationale: The correct answer is D: "Trim your toenails straight across." This instruction is essential to prevent ingrown toenails in clients with diabetes. Soaking feet in warm water daily (choice A) may increase the risk of skin breakdown and infection. Wearing shoes one size larger than normal (choice B) can lead to friction and cause blisters. While wearing cotton socks (choice C) is generally recommended, the emphasis should be on moisture-wicking materials rather than just cotton.
4. How does the diathesis-stress model explain the onset of mental disorders?
- A. Stress alone is sufficient to cause mental disorders.
- B. Both genetic vulnerability and environmental stress are needed to trigger a disorder.
- C. Only genetic factors cause mental disorders.
- D. Environmental stressors alone can cause mental disorders.
Correct answer: B
Rationale: The diathesis-stress model explains that the onset of mental disorders results from the interaction of genetic vulnerability (diathesis) and environmental stress. Choice A is incorrect because stress alone is not sufficient, according to the model. Choice C is incorrect as it oversimplifies by attributing mental disorders solely to genetic factors. Choice D is incorrect because the model emphasizes the joint contribution of genetic predisposition and environmental stress.
5. An investigator who conducts an experiment to determine how temperature changes affect the rate at which the heart beats is most likely a(n)
- A. anatomist.
- B. physiologist.
- C. chemist.
- D. biochemist.
Correct answer: physiologist.
Rationale: The correct answer is 'physiologist.' A physiologist studies how the body functions under normal and abnormal conditions, including how temperature changes can affect physiological processes like heart rate. An anatomist focuses on the structure of organisms rather than their functions, making choice A incorrect. Choices C and D are also incorrect as they are more related to the study of chemicals and biochemistry, which are not directly relevant to investigating the effects of temperature on heart rate.
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