A patient with a head injury has a mean arterial pressure of 70 mm Hg and an intracranial pressure of 20 mm Hg. Which of the following would be the cerebral perfusion pressure for this patient?
1. 90 mm Hg
2. 130 mm Hg
3. 140 mm Hg
4. 50 mm Hg
4
Rationale: The cerebral perfusion pressure is calculated as the mean arterial pressure minus the intracranial pressure. In this patient the cerebral perfusion pressure would be inadequate and intervention is needed. The other answer choices are incorrect using this equation.
You might also like to view...
A patient has been found to have an indolent neoplasm. The nurse should recognize what implication of this condition?
A) The patient faces a significant risk of malignancy. B) The patient has a myeloid form of leukemia. C) The patient has a lymphocytic form of leukemia. D) The patient has a major risk factor for hemophilia.
The nurse is preparing a patient for a computed tomography scan of the abdomen. Which statement by the nurse is best (all contain correct information)?
1) "You will need to remain NPO for the 8 hours prior to your CT scan." 2) "You cannot have anything to eat or drink for 8 hours before your test." 3) "You will need to be NPO and drink this contrast media before your test." 4) "You may need to void before you go down to the department for your CT scan."
A nursing student wants to know why a patient who has been taking levodopa [Dopar] for years will now receive levodopa/carbidopa [Sinemet]. The nurse explains the reasons that levodopa as a single agent is no longer available
Which statement by the student indicates a need for further education? a. "Carbidopa increases the availability of levodopa in the central nervous system." b. "Carbidopa reduces the incidence of nau-sea and vomiting." c. "Combination products reduce peripheral cardiovascular side effects." d. "Combination products cause fewer dyskinesias and decreased psychosis."
Parents of a 4-year-old child are concerned because he continues to stutter. What nursing intervention is correct?
a. Remind the parents that stuttering is normal in children younger than 10 years. b. Inform the parents to have a speech evaluation performed if the stuttering continues beyond age 5 years. c. Reinforce the fact that this common speech defect requires no treatment. d. Tell the parents that speech problems are most treatable during the child's teen years.