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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Nursing Elites

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. A client has applied a cold pack to their arm to help decrease swelling and inflammation after an injury. Which of the following signs indicates that the cold pack should be removed?

Correct answer: A

Rationale: When using a cold pack for therapeutic purposes, it is essential to monitor the site to prevent tissue damage. Prolonged use of cold therapy can lead to pale, mottled skin with a bluish appearance. This change in skin color indicates poor circulation, and the cold pack should be removed immediately to prevent tissue injury. Choices B, C, and D are incorrect because the duration of cold pack application, client complaints of nausea, and capillary refill time do not specifically indicate the need for the cold pack to be removed due to potential tissue damage.

3. What is the most important step that healthcare personnel can take to prevent the transmission of microorganisms in the hospital setting?

Correct answer: C

Rationale: The most crucial step in preventing the transmission of microorganisms in the hospital setting is proper hand hygiene. Healthcare personnel should wash their hands thoroughly before and after each patient contact to reduce the risk of spreading infections. While cleaning the stethoscope with an alcohol swab between patients is recommended, it is secondary to hand hygiene. Wearing protective eyewear at all times is not necessary for routine patient care unless specifically indicated, and wearing gloves only when in direct contact with patients is important but not as critical as proper handwashing. Therefore, the correct answer is to wash hands before and after contact with each patient.

4. A new staff nurse completes orientation to the psychiatric unit. This nurse will expect to ask an advanced practice nurse to perform which action for patients?

Correct answer: C

Rationale: Prescriptive privileges are granted to Master's-prepared nurse practitioners who have taken special courses on prescribing medications. The nurse prepared at the basic level performs mental health assessments, establishes relationships, and provides individualized care planning. In this scenario, the new staff nurse would ask the advanced practice nurse to prescribe psychotropic medications, as this is within their scope of practice and expertise. Establishing therapeutic relationships, performing mental health assessments, and individualizing care plans are typically responsibilities of staff nurses at the basic level, not advanced practice nurses.

5. Which of these actions illustrates the correct technique for a nurse when assessing oral temperature with a glass thermometer?

Correct answer: B

Rationale:

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