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. After taking the vital signs for your patient and finding them to be normal, what should you do next?

Correct answer: D

Rationale: After assessing and finding that the vital signs are normal for the patient, the appropriate action would be to document them on the graphic VS form. This form is used to track and record vital sign measurements accurately and consistently. Reporting the normal vital signs to the doctor is not necessary unless there are concerning trends or deviations. Writing the vital signs on a scrap piece of paper is not recommended as it may not be an official or reliable record. Calling the family members is unrelated to the process of documenting and tracking vital signs for the patient.

3. A patient is diagnosed with essential hypertension. Which of the following blood pressures would you expect to see in this patient prior to taking medications for the condition?

Correct answer: A

Rationale: Before starting medications for essential hypertension, a patient would typically present with a blood pressure reading equal to or greater than 140/90. This indicates high blood pressure and is characteristic of essential hypertension. Choice A, 142/92, falls within this range, making it the correct answer. Choices B (118/72), C (120/80), and D (138/88) all have blood pressure readings that are within the normal range and would not typically be expected in a patient diagnosed with essential hypertension. Therefore, choices B, C, and D are incorrect as they do not align with the elevated blood pressure levels seen in essential hypertension.

4. During a class on cultural practices, the nurse hears the term cultural taboo. Which statement illustrates the concept of a cultural taboo?

Correct answer: C

Rationale: The concept of a cultural taboo involves practices that are forbidden or avoided within a particular culture. Refusing to accept blood products as part of treatment is a clear example of a cultural taboo, as some cultures or religions prohibit the use of blood products for medical purposes. This practice is deeply rooted in cultural beliefs and traditions. The other choices provided do not directly relate to cultural taboos. Trying prayer before seeking medical help, believing illness is a punishment of sin, and stating that a child's birth defect is the result of parents' sins are beliefs or actions based on religious or personal beliefs, but they do not specifically represent cultural taboos.

5. What is a common error when taking a pulse?

Correct answer: C

Rationale: The correct answer is counting the pulse for 15 seconds and multiplying the number by four. To accurately assess a patient's heart rate or pulse, it is crucial to count the pulse for a full minute. Counting for only 15 seconds and then multiplying by four may result in an inaccurate heart rate calculation. This approach could miss arrhythmias or intermittent pulsations that could be vital indicators of the patient's condition. Placing the index finger on the radial artery, which is located on the thumb side of the patient's wrist, is the correct technique for taking a pulse. Noting a pulse as 'weak' when the pulsation disappears upon adding pressure is a valid observation and not an error in itself. Therefore, the most common error in this scenario is incorrectly calculating the pulse rate by multiplying a 15-second count by four.

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