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When taking an adult blood pressure, the onset of the sound the nurse hears is at 138, the muffled sound the nurse hears is at 70, and the disappearance of the sound the nurse hears is at 62. How should the nurse record this?
- A. 138/70
- B. 138/62
- C. 70/62
- D. 138/70/62
Correct Answer: B
Rationale: BP is recorded as systolic (onset, 138) over diastolic (disappearance, 62), so 138/62 (B). Muffling (70) is phase IV, not standard for adults. 138/70 (A) uses muffling incorrectly. 70/62 (C) is invalid. 138/70/62 (D) isn't standard. Choice B is correct, per AHA guidelines.
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The patient is lying in bed under a ceiling fan. Which technique is the nurse using when the fan produces heat loss?
- A. Radiation
- B. Conduction
- C. Convection
- D. Evaporation
Correct Answer: C
Rationale: A ceiling fan moves air over the patient, causing heat loss via convection (C), where warm air around the body is replaced by cooler moving air. Radiation (A) involves heat emission without contact, not fan-driven. Conduction (B) requires direct contact (e.g., cold pack), not air movement. Evaporation (D) involves moisture loss, not primarily fan-related here. Choice C is correct because convection matches the mechanism of air circulation enhancing heat dissipation, a principle nurses apply in thermoregulation strategies to cool patients effectively in clinical settings.
The patient with heart failure is restless with a temperature of 102.2?°F (39?°C). Which action will the nurse take?
- A. Place the patient on oxygen.
- B. Encourage the patient to cough.
- C. Restrict the patient's fluid intake.
- D. Increase the patient's metabolic rate.
Correct Answer: A
Rationale: Heart failure with fever (102.2?°F) and restlessness suggests increased oxygen demand. Applying oxygen (A) addresses potential hypoxemia, a priority in heart failure exacerbation. Coughing (B) is irrelevant without respiratory symptoms. Restricting fluids (C) may worsen dehydration in fever. Increasing metabolic rate (D) exacerbates stress. Choice A is correct, aligning with nursing priorities to support oxygenation in cardiac patients with fever-induced strain.
After taking the patient's temperature, the nurse documents the value and the route used to obtain the reading. What is the reason for the nurse's action?
- A. Temperatures vary depending on the route used.
- B. Temperatures are readings of core measurements.
- C. Rectal temperatures are cooler than when taken orally.
- D. Axillary temperatures are higher than oral temperatures.
Correct Answer: A
Rationale: Temperature varies by route (A) e.g., rectal is 1?°F higher, axillary 1?°F lower than oral requiring documentation for accuracy. Not all are core (B). Rectal is warmer (C incorrect). Axillary is lower (D incorrect). Choice A is correct, per nursing documentation standards.
The nurse is caring for an older-adult patient and notes that the temperature is 96.8?°F (36?°C). How will the nurse interpret this?
- A. This is normal for an older adult.
- B. This is too high for an older adult.
- C. This is indicative of infection.
- D. This requires immediate intervention.
Correct Answer: A
Rationale: Older adults often have lower baseline temperatures (e.g., 96.8?°F) due to slower metabolism; (A) is normal. Too high (B) or infection (C) doesn't fit without symptoms. Intervention (D) is unnecessary. Choice A is correct, per geriatric nursing norms.
The nurse needs to take the temperature of a patient who had a cardiac arrest. Which route will the nurse use?
- A. Oral
- B. Rectal
- C. Tympanic
- D. Temporal
Correct Answer: C
Rationale: Post-cardiac arrest, tympanic (C) provides a quick, non-invasive core temperature estimate, critical for monitoring hypothermia or hyperthermia in resuscitation. Oral (A) risks inaccuracy post-arrest. Rectal (B) is invasive and slow. Temporal (D) is less reliable in emergencies. Choice C is correct, aligning with ACLS emphasis on rapid, safe temperature assessment.