ATI LPN
Neurological Disorders in Medical Surgical Nursing Questions
Question 1 of 5
In what ways are simple and complex cells in the primary visual cortex different?
Correct Answer: A
Rationale: Both are orientation selective; simple cells have distinct ON/OFF regions, complex cells respond to motion across a broader field.
Question 2 of 5
In sensory pathways, changes in stimulus intensity are signaled by corresponding changes in the
Correct Answer: B
Rationale: Intensity is encoded by the firing rate and number of active neurons, not action potential amplitude (all-or-none).
Question 3 of 5
Prescribed: Heparin infusion at 30 mL/hr. Solution is 40,000 units in 500 mL D5W. How many units/hour will the client receive?
Correct Answer: C
Rationale: Concentration: 40,000 units / 500 mL = 80 units/mL. 30 mL/hr × 80 units/mL = 2400 units/hr (C).
Question 4 of 5
The nurse monitors a client undergoing plasmapheresis for which signs/symptoms?
Correct Answer: C
Rationale: Plasmapheresis can cause hypocalcemia (C), leading to paresthesia/dizziness.
Question 5 of 5
Post-teaching for a brain MRI without contrast, which client statement shows understanding?
Correct Answer: A
Rationale: No contrast MRI allows immediate activity resumption (A); no dye or radioactivity.