ATI LPN
Medical-Surgical Nursing Neurological System Questions
Question 1 of 5
A patient with a head injury has an intracranial pressure (ICP) of 18 mmHg. The blood pressure is 144/90 mm Hg, and mean arterial pressure (MAP) is 108 mmHg. What is the cerebral perfusion pressure (CPP)?
Correct Answer: A
Rationale: CPP = MAP - ICP = 108 - 18 = 90 mmHg (A), ensuring adequate brain perfusion.
Question 2 of 5
Impulses (action potentials) pass from one neuron to another at a microscopic gap, called a synapse, where they trigger release of chemical signal molecules, called:
Correct Answer: A
Rationale: Neurotransmitters bridge synapses. Hormones are systemic, others are intracellular. [Level: Knowledge]
Question 3 of 5
A client returns to unit following a craniotomy for removal of brain tumor and is obtunded but arouses to painful stimuli. Which assessment is most important for the nurse to obtain?
Correct Answer: D
Rationale: Obtunded state post-craniotomy suggests possible increased ICP; BP/pulse trends indicate stability or deterioration. Others are secondary. [Level: Analysis]
Question 4 of 5
Magnesium hydroxide, 1.5 ounces P.O is prescribed for a client complaining of heartburn. After taking the prescribed dose 3 times today, how many mL of magnesium hydroxide has the client ingested?
Correct Answer: A
Rationale: 1.5 oz = 44.36 mL (1 oz ≈ 29.57 mL); 3 doses = 44.36 × 3 = 133.08 mL. [Level: Application]
Question 5 of 5
The nurse is conducting discharge teaching for a male client with a prescription for magnesium hydroxide 15 mL one time per day. His home medication cup is ounces. How many ounces should he take each dose?
Correct Answer: A
Rationale: 15 mL ≈ 0.5 oz (1 oz = 29.57 mL). [Level: Application]