which vacutainer tubes should be used when a requisition calls for blood to be drawn for an hh and glucose test
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NCLEX-RN

NCLEX RN Predictor Exam

1. Which vacutainer tubes should be used when a requisition calls for blood to be drawn for an H&H and glucose test?

Correct answer: D

Rationale: The correct answer is 'One green, one red.' An H&H test involves hemoglobin and hematocrit, which are components of a complete blood count and are typically drawn in a lavender tube. On the other hand, blood for glucose testing is collected in grey tubes. Therefore, when drawing blood for both an H&H and glucose test, one green tube for glucose and one red tube for H&H should be used. The other choices are incorrect because light blue tubes are used for coagulation studies, lavender tubes are for complete blood counts, and green tubes are for chemistry tests like glucose, while grey tubes are specifically for glucose testing.

2. You are ready to give your resident a complete bed bath. The temperature of this bath water should be which of the following?

Correct answer: C

Rationale: The correct temperature for a bed bath water should be about 106 degrees. This temperature is considered safe and comfortable for residents. Using a bath thermometer is essential to ensure the water is not too hot, as hot water can cause burns. On the other hand, water that is too cool can lead to discomfort, shivering, and chilling. Options A, B, and D are incorrect because cooler water may cause discomfort and shivering, hotter water can lead to burns, and water over 120 degrees is considered too hot and risky for a resident's skin.

3. You see a sign over Mary Jones' bed when you arrive at 7 am to begin your day shift. The sign says, 'NPO'. Ms. Jones is on a regular diet. The patient asks for milk and some crackers. You _____________.

Correct answer: D

Rationale: The correct answer is that you cannot give her anything to eat or drink. 'NPO' is the standard abbreviation for 'nothing by mouth,' indicating that the patient should not consume any food or liquids. It is crucial to adhere to this restriction to prevent any potential harm or complications in the patient's condition. Choices A, B, and C are incorrect because 'NPO' clearly specifies that the patient should not have anything to eat or drink, including milk and crackers. Providing these items could lead to adverse effects, so it is essential to follow the 'NPO' directive strictly.

4. Which of the following vital signs can be expected in a child that is afebrile?

Correct answer: C

Rationale: The correct answer is the axillary temperature of 98.6 degrees F. Afebrile means without a fever, and an axillary temperature, which is taken in the armpit, is considered normal at 98.6 degrees F. Choice A is incorrect as a rectal temperature of 100.9 degrees F indicates a fever. Choice B is incorrect as an oral temperature of 38 degrees C is also indicative of a fever. Choice D is incorrect as not all options are wrong; only choices A and B are incorrect for an afebrile child.

5. A student is late for an appointment and has rushed across campus to the health clinic. How should the nurse proceed?

Correct answer: A

Rationale: To ensure an accurate blood pressure reading, it is important for the student to be in a relaxed state. Allowing at least a 5-minute rest period helps reduce anxiety and provides a valid blood pressure measurement. Checking the blood pressure in both arms is unnecessary unless there is a specific reason to suspect an issue, and recent exercise should not significantly impact the readings. Monitoring vital signs immediately upon arrival may not yield accurate results due to the rush and anxiety of the student. Checking blood pressure in the supine position is not necessary in this scenario and does not provide a more accurate reading.

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