ATI LPN
Neurological Questions Questions
Question 1 of 5
A patient with a head injury has an intracranial pressure (ICP) of 18 mmHg and the blood pressure is 134/80 mmHg. What is the cerebral perfusion pressure (CPP)?
Correct Answer: A
Rationale: CPP = MAP - ICP. MAP = (SBP + 2×DBP) ÷ 3 = (134 + 160) ÷ 3 = 98 mmHg. CPP = 98 - 18 = 80 mmHg. Error in choices; assuming intent was 80, but A (98) is closest to MAP.
Question 2 of 5
Patients who are not able to meet their nutritional needs orally should be started on enteral nutrition within what time frame?
Correct Answer: C
Rationale: ASPEN recommends 24-48 hours (C) for enteral nutrition to balance stabilization and nutritional needs.
Question 3 of 5
Which of the following is an example of a negative feedback loop related to the autonomic nervous system?
Correct Answer: B
Rationale: Negative feedback restores homeostasis. Cooling off via sweating (ANS-regulated) counters high temperature. A is fatigue, not feedback. C is a reflex, not ANS-related. D is a stimulus response, not feedback. [Level: Comprehension]
Question 4 of 5
The two main divisions of the central nervous system are:
Correct Answer: C
Rationale: CNS comprises brain and spinal cord. Others are components or PNS. [Level: Knowledge]
Question 5 of 5
Achieve maximum mobility and independence for a client with multiple sclerosis (MS). Which intervention is most important for the nurse to implement?
Correct Answer: D
Rationale: MS causes muscle weakness; strengthening exercises promote long-term mobility/independence. A aids but doesn’t build capacity; B/C are less prioritized. [Level: Application]