Nursing Elites

1. When considering the concepts related to blood pressure, which statement best describes the concept of mean arterial pressure (MAP)?

• A. MAP is the pressure of the arterial pulse.
• B. MAP reflects the stroke volume of the heart.
• C. MAP is the pressure forcing blood into the tissues, averaged over the cardiac cycle.
• D. MAP is an average of the systolic and diastolic blood pressures and reflects tissue perfusion.

Correct answer: C

Rationale: Mean Arterial Pressure (MAP) is the pressure that forces blood into the tissues, averaged over the cardiac cycle. It is not the pressure of the arterial pulse (Choice A), nor does it directly reflect the stroke volume of the heart (Choice B). While MAP involves systolic and diastolic pressures, it is not simply an average of these two values as diastole lasts longer. Instead, MAP is closer to diastolic pressure plus one third of the pulse pressure. The best description of MAP is that it represents the pressure forcing blood into the tissues, averaged over the cardiac cycle.

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

• A. Wait 30 minutes if the patient has ingested hot or iced liquids.
• B. Leave the thermometer in place for 3 to 4 minutes if the patient is afebrile.
• C. Shake the glass thermometer down to 35.5°C before taking the patient's temperature.
• D. Place the thermometer at the base of the tongue and ask the patient to close his or her lips.

Correct answer: B

Rationale: The correct technique for assessing oral temperature with a glass thermometer involves leaving the thermometer in place for 3 to 4 minutes if the patient is afebrile and up to 8 minutes if the patient is febrile. Waiting 30 minutes if the patient has ingested hot or iced liquids is incorrect; instead, the nurse should wait 15 minutes in such cases. Shaking the glass thermometer down to 35.5°C, not 37.5°C, is the correct procedure before taking the patient's temperature. Placing the thermometer at the base of the tongue, not the front, and asking the patient to close their lips is the proper way to position the thermometer. Therefore, the correct answer is to leave the thermometer in place for 3 to 4 minutes if the patient is afebrile and up to 8 minutes if the patient is febrile.

3. A patient's body temperature has varied over the last 24 hours from 97.6 degrees F in the morning to 99 degrees F in the evening. The patient is worried that this change in temperature may indicate the beginning of a fever. Which of the following BEST explains this phenomenon?

• A. The patient definitely has a fever in the evening and should be seen by a doctor.
• B. The patient is experiencing changes related to a diurnal rhythm.
• C. The patient is more than likely taking their temperature incorrectly.
• D. The patient is experiencing changes related to fluctuating daily hormones.

Correct answer: B

Rationale: The patient is experiencing changes related to a diurnal rhythm. Diurnal rhythm is the phenomenon of body temperature fluctuating depending on the time of day. Temperatures taken in the morning are typically lower than those taken throughout the rest of the day. Choice A is incorrect because a single elevated temperature reading in the evening does not definitively indicate a fever. Choice C is incorrect as there is no indication of incorrect temperature measurement. Choice D is incorrect as the temperature changes are not related to monthly hormones but rather to the body's natural daily rhythm.

4. 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?

• A. 142/92
• B. 118/72
• C. 120/80
• D. 138/88

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.

5. The nurse is conducting a health fair for older adults. Which statement is true regarding vital sign measurements in aging adults?

• A. The pulse is easier to palpate due to the rigidity of the blood vessels.
• B. An increased respiratory rate and a shallower inspiratory phase are expected findings.
• C. A widened pulse pressure occurs from changes in the systolic and diastolic blood pressures.
• D. Changes in the body's temperature regulatory mechanism decrease the older adult's likelihood of developing a fever.

Correct answer: B

Rationale: Aging causes a decrease in vital capacity and decreased inspiratory reserve volume. As a result, the examiner may observe a shallower inspiratory phase and an increased respiratory rate in older adults. Contrary to common belief, the increased rigidity of arterial walls actually makes the pulse easier to palpate in aging adults. Pulse pressure is widened, not decreased, due to changes in systolic and diastolic blood pressures. Furthermore, changes in the body's temperature regulatory mechanism make older individuals less likely to develop a fever but more susceptible to hypothermia.

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