ATI RN
CNS Vital Signs Assessment Questions
Question 1 of 5
A blood pressure reading consists of a top number, or , and bottom number, or
Correct Answer: C
Rationale: BP readings show systolic (top, ventricular contraction) and diastolic (bottom, relaxation) pressures , in mmHg. Oxygen saturation and pulse are separate. Diastolic over systolic reverses order. Millimeters and mercury is the unit, not the terms. Choice C is correct, per standard BP notation (e.g., 120/80 mmHg), a foundational nursing concept for documenting cardiac workload.
Question 2 of 5
The patient is being admitted to the emergency department with complaints of shortness of breath. The patient has had chronic lung disease for many years but still smokes. The nurse should
Correct Answer: B
Rationale: Chronic lung disease (e.g., COPD) risks CO2 retention; cautious oxygen avoids suppressing hypoxic drive. High oxygen is dangerous. Paper bag and CO2 worsen hypoxia. Choice B is correct, per respiratory nursing.
Question 3 of 5
A nurse is assessing a client's blood pressure. Which of the following should the nurse use to measure blood pressure accurately?
Correct Answer: D
Rationale: A sphygmomanometer and stethoscope measure BP accurately via Korotkoff sounds. Palpation assesses pulse, not BP. Lung sounds and skin color don't measure pressure. Choice D is correct, per the explanation, aligning with standard BP technique.
Question 4 of 5
A nurse is assessing a client's pulse oximetry reading and notices that the waveform is irregular and inconsistent. What action should the nurse take?
Correct Answer: B
Rationale: Irregular waveform suggests sensor issues; reapplying on another finger ensures accuracy. It's not normal . Distress or provider action follows if persistent. Choice B is correct, per the explanation, troubleshooting first in nursing practice.
Question 5 of 5
What site for taking body temperature with a glass thermometer is contraindicated in patients who are unconscious?
Correct Answer: C
Rationale: Oral is contraindicated in unconscious patients, per the answer key, due to choking risk with glass thermometers. Rectal , tympanic , and axillary are safer alternatives. Nurses prioritize patient safety, avoiding oral routes in non-responsive states.