Nursing Elites

1. Which of the following tests would MOST LIKELY be performed on a patient who is being monitored for coagulation therapy?

• A. PT/INR
• B. CBC
• C. PTT
• D. WBC

Correct answer: A

Rationale: The correct answer is A: PT/INR. Prothrombin times (PT/INR) are commonly used to monitor patients on Coumadin (warfarin) therapy, an anticoagulant that slows the blood's ability to clot. Monitoring PT/INR levels helps ensure the patient is receiving the appropriate dosage of Coumadin. Choice B, CBC (Complete Blood Count), is a general test that provides information on red blood cells, white blood cells, and platelets but is not specific to monitoring coagulation therapy. Choice C, PTT (Partial Thromboplastin Time), is another coagulation test but is not as commonly used for monitoring Coumadin therapy. Choice D, WBC (White Blood Cell count), is unrelated to monitoring coagulation therapy and is used to assess immune system function.

2. Which brain structure serves as the heat-regulating center?

• A. Hypothalamus
• B. Pituitary Gland
• C. Pons
• D. Medulla Oblongata

Correct answer: A

Rationale: The correct answer is the Hypothalamus. The hypothalamus is responsible for regulating body temperature, ensuring it stays within a narrow range. Moreover, the hypothalamus controls various essential bodily functions, such as hunger, thirst, and circadian rhythms. Choices B, C, and D are incorrect because the Pituitary Gland primarily produces and releases hormones, the Pons is involved in functions like sleep, respiration, and bladder control, and the Medulla Oblongata controls vital functions like breathing and heart rate, but not body temperature regulation.

3. In which of the following ways can a nurse promote sleep for a client experiencing insomnia?

• A. Assist the client in using the bathroom one hour after going to bed
• B. Give the client a massage before bedtime
• C. Tuck bed sheets and blankets tightly around the client once settled in bed
• D. Give the client a pair of socks to wear if their feet become cold

Correct answer: D

Rationale: A nurse can promote sleep for a client experiencing insomnia by addressing factors that may hinder sleep. Cold feet can disrupt sleep, so providing the client with socks to keep their feet warm can enhance comfort and aid in promoting sleep. The correct answer focuses on a direct intervention to address a specific issue that can impact sleep quality. Choices A, B, and C do not directly address the issue of cold feet, which is a common problem that can interfere with sleep in individuals with insomnia. Assisting the client to use the bathroom, giving a massage in the morning, or tucking in bed sheets tightly do not target the discomfort caused by cold feet, making them less effective interventions for promoting sleep in this scenario.

4. In the Gram Stain procedure, which component acts as the mordant?

• A. Crystal violet
• B. Methyl alcohol
• C. Iodine
• D. Safranin

Correct answer: C

Rationale: In the Gram Stain procedure, the mordant is Gram's Iodine. The purpose of the mordant is to form a complex with the crystal violet, enhancing its ability to bind to the cell wall. Crystal violet is actually the primary stain used in the Gram Stain procedure to initially color all cells. Methyl alcohol is the decolorizer that removes the crystal violet from certain cell types. Safranin is the counterstain used to stain those cells that did not retain the crystal violet stain after the decolorization step.

5. A urine pregnancy test:

• A. May be negative even if a blood pregnancy test is positive.
• B. Is positive only during the first trimester of pregnancy.
• C. Will be negative if the amount of LH isn't enough to meet or exceed the sensitivity of the testing device.
• D. All of the above.

Correct answer: A

Rationale: A urine pregnancy test detects HCG in a pregnant woman's urine. Blood levels of HCG are usually higher and register earlier than HCG levels in the urine. Choice A is correct because urine pregnancy tests may be negative even if a blood pregnancy test is positive due to the differences in HCG levels in blood and urine. Choice B is incorrect because a urine pregnancy test can be positive throughout pregnancy, not just in the first trimester. Choice C is incorrect because LH (luteinizing hormone) is not the hormone detected in a pregnancy test; it is HCG (human chorionic gonadotropin). Choice D is incorrect because not all the statements provided are true.

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