Elsevier Adaptive Quizzing Quiz performance Intracranial Problems Practice Quiz

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3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 1/30 Exit Performance Intracranial Problems Practice Quiz Due Mar 10, 2024 by 11:59 pm Final Score 80% 24 out of 30 questions answered correctly Completed on Mar 20, 2024 6:15 pm Incorrect (6) Report content error Which priority outcome would the nurse expect after administration of IV mannitol prescribed for a patient experiencing an increased intracranial pressure (ICP)? Increased urine output
3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 2/30 Rationale Mannitol is an osmotic diuretic that increases osmotic pressure in the renal tubules to increase the uptake of water and diuresis by the kidneys, which specifically helps to relieve cerebral edema, thereby decreasing ICP, which is the priority outcome. Increased urine output, decreased BP, and increased intracranial perfusion are secondary outcomes of administration of mannitol. Of these, increased intracranial perfusion is most desirable because it reduces ICP. The nurse monitors BP closely because an extreme decrease in BP may occur, resulting in decreased intracranial perfusion. p. 1491 Report content error For the patient who sustained a head injury in a motor vehicle crash, which initial intervention would the nurse include in the patient’s plan of care? Select all that apply. One, some, or all responses may be correct. Some correct answers were not selected Decreased blood pressure (BP) Reduced ICP Increased intracranial perfusion Control external bleeding. Administer oxygen. Assume neck injury. Maintain normothermia.
3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 3/30 Rationale Controlling external bleeding with sterile pressure dressings, administering oxygen, assuming a neck injury with the head injury, and establishing IV access are priority interventions to ensure the health and safety of the patient. Maintaining normothermia and administering fluids cautiously are part of ongoing monitoring to help prevent secondary injury; these interventions can take place after the priority interventions have been administered. p. 1500 Report content error Which clinical manifestation is characteristic of Cushing triad? Select all that apply. One, some, or all responses may be correct. Some correct answers were not selected Administer fluids cautiously. Establish/maintain IV access. Tachycardia Bradycardia Systolic hypotension Systolic hypertension Widening pulse pressure Narrowing pulse pressure
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3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 4/30 Rationale Cushing triad is a neurologic emergency characterized by bradycardia, systolic hypertension, and a widening pulse pressure. The heart rate slows, so Cushing triad does not include tachycardia. Systolic BP increases, so hypotension is not present. Pulse pressure widens, not narrows, with Cushing triad. p. 1487 Report content error When the nurse is preparing to administer a hypertonic saline infusion to a patient with an increased intracranial pressure (ICP), which parameter would the nurse monitor frequently? Select all that apply. One, some, or all responses may be correct. Some correct answers were not selected Rationale Hypertonic saline solutions can be used to treat increased ICP. Hypertonic saline infusions increase the intravascular fluid volume, which may alter Blood glucose Serum sodium BP Level of sedation Gastrointestinal disturbances
3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 5/30 the serum sodium levels and BP in the body. Monitoring blood glucose levels would be necessary if administering corticosteroids to a patient. Monitoring sedation levels would be required if administering barbiturates to the patient. Monitoring gastrointestinal disturbances would be necessary if administering corticosteroids to the patient. Test-Taking Tip: Be alert for details about what you are asked. In this question type, you need to select all options that apply to a given situation or patient. All options likely relate to the situation, but only some of the options may relate directly to the situation. p. 1491 Report content error Which factor would the nurse consider prior to repositioning a patient with an increased intracranial pressure (ICP)? Select all that apply. One, some, or all responses may be correct. Rationale Maintain the patient's hips in flexed position while lying on the side. Take care to prevent extreme neck flexion of patient. Adjust body position to decrease ICP. Rotate the patient to a side-lying position to prevent skin breakdown. Follow protocol standards to maintain a head-up position for the patient.
3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 6/30 The nurse should take care to prevent extreme neck flexion of the patient because it can cause venous obstruction and contribute to elevated ICP. The nurse would position the patient's body to decrease ICP and improve the cerebral perfusion pressure (CPP). Maintaining a head-up position for the patient is important because elevation of the head of the bed promotes drainage and decreases the vascular congestion that can produce cerebral edema. The patient avoids extreme hip flexion to decrease the risk for raising the intraabdominal pressure, which increases ICP. Rotating the patient to a side-lying position may further increase the ICP. Special air beds can alternate skin pressures to prevent tissue damage. pp. 1494-1495 Report content error Which factor would the nurse associate with influencing a patient’s intracranial pressure (ICP)? Select all that apply. One, some, or all responses may be correct. Some correct answers were not selected Rationale Posture Swallowing Drowsiness Suctioning Hypoxemia Intraabdominal pressure
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3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 7/30 Posture, suctioning, hypoxemia, and intraabdominal pressure all influence ICP. Swallowing does not affect ICP. Drowsiness may be a sign of increased ICP, but it does not influence it. pp. 1494-1495 Correct (24) Report content error
3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 8/30 Which clinical manifestation would the nurse anticipate identifying in a patient who is comatose? Select all that apply. One, some, or all responses may be correct. Rationale A coma is the deepest state of unconsciousness in which the corneal and pupillary reflexes are absent. A comatose patient is also incontinent of urine and feces and does not respond to painful stimuli. The comatose patient is not able to cough and swallow and does not have any bowel and bladder control. p. 1487 Report content error Patient can cough and swallow. Patient has bowel and bladder control. Patient's corneal and pupillary reflexes are absent. Patient has incontinence of urine and feces. Patient does not respond to painful stimuli.
3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 9/30 The patient admitted with a closed head injury is awake but lethargic, and the baseline vital signs include a blood pressure (BP) of 120/80 mm Hg, pulse of 78 beats/min, and respirations of 20 breaths/min. Which finding indicates deterioration of the patient’s condition 2 hours later? Rationale Late signs of increased intracranial pressure include an increased systolic BP and decreasing diastolic BP (widening pulse pressure), bradycardia, and irregular respirations. The patient may also display a decreased level of consciousness, seizures, or both. These symptoms represent the Cushing triad and require immediate intervention. A sleeping patient who awakens in response to painful stimuli; not remembering what happened; and a BP of 110/80 mm Hg, pulse of 78 beats/min, and respirations of 20 breaths/min do not necessarily indicate deterioration in the patient's condition. p. 1487 Report content error The patient is sleeping but awakens in response to painful stimuli. The patient does not remember what happened during the 6 hours prior to the injury. BP is 110/80 mm Hg, pulse is 78 beats/min, and respirations are 20 breaths/min. BP is 160/74 mm Hg, pulse is 53 beats/min, and respirations are irregular.
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3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 10/30 Which interpretation would the nurse associate with a patient’s Glasgow Coma Scale score of 5 after sustaining a head injury? Rationale The Glasgow Coma Scale ranges from 3 to 15. A score of 8 or less generally indicates coma. The lower the score, the more serious the patient's condition. A patient who is alert and oriented, awake but lethargic, or responding appropriately to commands has a Glasgow Coma Scale score higher than 8. p. 1492 Report content error The patient is alert and oriented. The patient is unresponsive and comatose. The patient is awake but lethargic and drowsy. The patient responds appropriately to commands.
3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 11/30 Which response would the nurse document when a patient with a brain injury experiences the motor function changes depicted in the image? Rationale Decorticate posture involves internal rotation and adduction of the arms with extension of the elbows, wrists, and fingers, as illustrated in the image. This results from interruption of voluntary motor tracts in the cerebral cortex. The patient may also demonstrate an extension of the legs. A decerebrate posture may indicate more serious damage and results from disruption of motor fibers in the midbrain and brainstem. In this position, the arms are stiffly extended, adducted, and hyperpronated. There is also hyperextension of the legs with plantar extension of the feet. Sinusoidal posturing does not exist. Opisthotonic posturing consists of the head, neck, and spinal column in an arching position. p. 1487 Decorticate posturing Decerebrate posturing Sinusoidal posturing Opisthotonic posturing
3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 12/30 Report content error When the nurse is assessing a patient’s neurologic status upon arrival to the emergency room, which indicator would the nurse utilize as the most reliable? Rationale The level of consciousness is the most sensitive and reliable indicator of the patient's neurologic status. Dim vision can be due to dysfunction of the cranial nerves. Papilledema, which is an edematous optic disc seen on retinal examination, can be noted and is a nonspecific sign associated with persistent increases in intracranial pressure (ICP). A change in body temperature may also occur because increased ICP affects the hypothalamus. p. 1487 Report content error Dim vision Papilledema Body temperature Level of consciousness
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3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 13/30 Which initial intervention would the nurse implement as emergency management of a patient who fell and presented with scalp lacerations and a depressed skull? Select all that apply.One, some, or all responses may be correct. Rationale Manage the patient with scalp lacerations and skull depression by stabilizing the cervical spine, administering oxygen via a non-rebreather mask, and controlling external bleeding with a sterile pressure dressing. Wrapping the patient in tight clothing is not appropriate. Instead, removing the patient's clothes can help. Intubation is required only if the GCS is less than 8 (comatose). p. 1500 Report content error Stabilize the cervical spine. Wrap the patient in tight clothing. Administer oxygen via a non-rebreather mask. Control external bleeding with a sterile pressure dressing. Intubate if the Glasgow Coma Scale (GCS) score is less than 12.
3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 14/30 For the patient presenting with watery sanguineous nasal drainage after falling from a first-floor roof, which diagnostic method validates the nurse’s suspicion of a cerebrospinal fluid (CSF) leak? Rationale The patient may be experiencing leakage of CSF from the nose, which is also sanguineous (bloody). In the presence of blood, the halo test is most accurate for determining the presence of CSF. Allow the leaking fluid to drip onto a white gauze pad (4 × 4) or towel, and then observe the drainage. Within a few minutes, the blood coalesces into the center, and a yellowish ring encircles the blood if CSF is present. A Gram stain is used to identify bacterial presence. If blood is present, the Dextrostix will not be accurate because glucose is present in blood. CSF is sterile in the body and under normal circumstances does not contain white cells (leukocytes) or bacteria. p. 1497 Report content error Gram stain The halo test A Dextrostix Slide smear for presence of leukocytes
3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 15/30 Which patient condition contraindicates testing the doll’s-eye reflex when performing a neurologic assessment? Rationale A doll’s-eye reflex test is performed to determine the oculocephalic reflex. It is done by turning the patient’s head briskly to the left or right while holding the eyelids open and then by quickly flexing and extending the neck. It would be contraindicated in a patient with a cervical spine problem because of the brisk turning of the patient's head. A doll’s-eye reflex test can be performed in an unconscious and uncooperative patient. This test is usually only done as part of the evaluation of brain death. p. 1493 Report content error Which intervention would the nurse identify as a priority when monitoring a patient recovering from a craniotomy? An unconscious patient An uncooperative patient A patient with a cervical spine injury A patient who is being evaluated for brain death Monitor the patient for pain. Monitor the patient for an infection. Monitor the patient for excessive bleeding or hemorrhage.
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3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 16/30 Rationale The priority action of the nurse caring for a patient following a craniotomy is to monitor for increased ICP, which can have serious life-threatening implications. Managing the patient’s pain is important, but pain is not an emergency. Monitoring the patient for development of an infection would be done, but the infection would not be immediately apparent. A hemorrhage will cause an increase in ICP if it is cerebral. p. 1507 Report content error Which Glasgow Coma Scale (GCS) score would the nurse assign an unconscious patient who opens the eyes in response to pain but who does not respond to any other stimulus, moans to any verbal communication, and demonstrates flexion withdrawal? Rationale Monitor the patient for increased intracranial pressure (ICP). 4 6 8 10
3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 17/30 The GCS is a quick, practical, and standardized system for assessing loss of consciousness. According to this scale, the patient’s ability to open his or her eyes in response to only pain stimulus merits a score of 2. Expressing incomprehensible words such as moaning merits a score of 2; and for flexion withdrawal, a score of 4 is given. Therefore 2 + 2 + 4 = 8 indicates the value for the GCS for this patient. p. 1492 Report content error When a plan of care is developed for a patient with an elevated intracranial pressure (ICP), which factor guides the nursing interventions? Select all that apply. One, some, or all responses may be correct. Rationale Pain and agitation cause rapid movements, which may increase the ICP. Extreme hip flexion may raise the intraabdominal pressure, which increases the ICP. Increased intrathoracic pressure may increase ICP by impeding venous return. Elevation of the head of the bed promotes drainage from the head, decreases vascular congestion, and therefore Pain and agitation may elevate the patient’s ICPs. Elevating the head of the patient’s bed increases ICPs. Extreme hip flexion increases intraabdominal pressures. Increased intrathoracic pressures impede venous return. Slow and gentle movements exhaust the patient’s energy reserve.
3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 18/30 decreases ICP. Slow and gentle movements will provide comfort to the patient and will not increase the ICP. Test-Taking Tip: Be alert for details about what you asked to do. In this question type, the request was to select all options that apply to a given situation or patient. All options likely relate to the situation, but only some of the options may relate directly to the situation. p. 1495 Report content error Which method of measurement is the gold standard for obtaining intracranial pressures (ICPs)? Rationale A ventriculostomy is the gold standard for measurement of ICP. A fiberoptic catheter and air pouch/pneumatic are other measures for monitoring ICP, but they are not considered the gold standard. A transcranial Doppler evaluates blood flow in the brain. p. 1488 Ventriculostomy Fiberoptic catheter Air pouch/pneumatic Transcranial Doppler
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3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 19/30 Report content error For the patient admitted with a subdural hematoma following a motor vehicle accident, which vital sign change would the nurse interpret as a clinical manifestation of an increasing intracranial pressure (ICP)? Rationale Bradycardia could indicate increased ICP. Changes in vital signs (known as Cushing triad) occur with increased ICP. The triad consists of increasing systolic pressure (not hypotension) with a widening pulse pressure (not narrowing), bradycardia with a full and bounding pulse, and irregular respirations (not tachypnea). Test-Taking Tip: The most reliable way to ensure that you select the correct response to a multiple-choice question is to recall it. Depend on your learning and memory to furnish the answer to the question. To do this, read the stem, and then stop! Do not look at the response options yet. Try to recall what you know and, based on this, what you would give as the answer. After you have taken a few seconds to do this, then look at all of the choices and select the one that most nearly matches the answer you recalled. Considering all the choices and not just selecting the first option that seems to fit the answer you recall is important. Remember the distractors. The second choice may look okay, but wording of the fourth Hypotension Bradycardia Narrowing pulse pressure Tachypnea
3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 20/30 choice may be in a way that makes it a slightly better choice. If you do not weigh all the choices, you are not maximizing your chances of correctly answering each question. p. 1487 Report content error Assessment findings of a patient include a mean arterial pressure (MAP) of 64 mm Hg, intracranial pressure (ICP) of 25 mm Hg, and blood pressure (BP) of 180/90 mm Hg. The nurse calculates what cerebral perfusion pressure (CPP)? Record answer as a whole number. mm Hg Rationale The CPP is calculated by subtracting the ICP from the MAP; 64 - 25 = 39. Normal CPP is 60 to 100 mm Hg to ensure blood flow to the brain. As CPP decreases, autoregulation fails and cerebral blood flow is decreased. p. 1484 Report content error 39
3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 21/30 The nurse would instruct the patient recovering from a head injury and his or her caregiver to report the development of which symptom immediately to the health care provider? Select all that apply. One, some, or all responses may be correct. Rationale Seizures, a stiff neck, and increased drowsiness are the important symptoms that the patient and caregivers should immediately relay to the health care provider. Sneezing and constipation are not alarming and can also be due to other reasons. p. 1501 Report content error Which observation would the nurse associate with a cerebrospinal fluid (CSF) leak when a patient with a suspected traumatic brain injury (TBI) develops a bloody nasal drainage? Sneezing Seizures Stiff neck Constipation Increased drowsiness A halo sign on the nasal-drip pad
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3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 22/30 Rationale When drainage containing both CSF and blood is allowed to drip onto a white pad, within a few minutes the blood will coalesce into the center, and a yellowish ring of CSF will encircle the blood, giving a halo effect. Decreased BP and urinary output would not be indicative of a CSF leak. The presence of glucose would be unreliable for determining the presence of CSF because blood also contains glucose. Clear nasal drainage along with the bloody discharge would need to be assessed with the halo test to see if there is a yellowish ring of CSF around the blood. p. 1497 Report content error Which physiologic effect is associated with a patient’s calculated mean arterial pressure (MAP) below 70 mm Hg? Rationale Decreased BP and urinary output A positive reading for glucose on a test-tape strip Clear nasal drainage along with the bloody discharge Normal intracranial pressure (ICP) Increased ICP Decreased cerebral blood flow (CBF) Increased cerebral perfusion pressure (CPP)
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3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 23/30 A MAP below 70 mm Hg results in a decreased CBF. The decreased MAP does not indicate a normal or increased ICP. The CPP decreases as a result of the diminished MAP. A MAP below 70 mm Hg does not necessarily guarantee a normal ICP. The normal range of a MAP is between 70 and 100 mm Hg. A MAP of at least 60 mm Hg is vital to provide enough blood to the coronary arteries, kidneys, and brain. p. 1484 Report content error Which intervention would the nurse implement to promote positive outcomes for a patient experiencing increased intracranial pressures (ICPs) in the neurologic intensive care unit? Select all that apply. One, some, or all responses may be correct. Rationale ICP monitoring, elevating the head of the bed 30 degrees, and maintaining a systolic arterial pressure of 100 to 160 mm Hg are components of expected management for a patient with increased ICP. Monitor ICP. Obtain consent for a cerebral angiography. Elevate the head of the bed to 30 degrees. Obtain a patient history and physical examination. Maintain a PaO of 90 mm Hg or greater. 2 Maintain systolic arterial pressure of 100 to 160 mm Hg.
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3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 24/30 Cerebral angiography, patient history, and a physical examination are diagnostic assessment tools rather than interventions to promote a positive outcome. The PaO should be maintained at 100 mm Hg or greater. p. 1488 Report content error Which clinical manifestation would the nurse report immediately to the health care provider when providing care for a patient with a traumatic brain injury and an increased intracranial pressure (ICP)? Rationale An increased urine output of 500 mL in 1 hour could cause critical fluid and electrolyte imbalance issues. It could also indicate that the patient is going into diabetes insipidus, which is caused by a decrease in antidiuretic hormone (ADH) and results in increased urine output and hypernatremia. This would need prompt attention. An ICP of 20 mm Hg, respiratory rate of 24 breaths/min, and pulse of 100 beats/min do not indicate a need for the nurse to call the health care provider. p. 1494 2 ICP of 20 mm Hg Urine output of 500 mL in 1 hour Respiratory rate of 24 breaths/min Pulse of 100 beats/min
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3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 25/30 Report content error For which potential complication related to cerebral hemorrhage and edema would the nurse monitor in a patient admitted with a head injury? Rationale Increased intracranial pressure can occur as a potential complication related to cerebral hemorrhage and edema. Anxiety can result from an abrupt change in health status, being in a hospital environment, and having an uncertain future. Hyperthermia can occur because of increased metabolism, infection, and hypothalamic injury. Impaired physical mobility is related to a decreased level of consciousness. Test-Taking Tip: The most reliable way to ensure that you select the correct response to a multiple-choice question is to recall it. Depend on your learning and memory to furnish the answer to the question. To do this, read the stem, and then stop! Do not look at the response options yet. Try to recall what you know and, based on this, what you would give as the answer. After you have taken a few seconds to do this, then look at all of the choices and select the one that most nearly matches the answer you recalled. It is important that you consider all the choices and not just Anxiety Hyperthermia Impaired physical mobility Increased intracranial pressure
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3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 26/30 choose the first option that seems to fit the answer you recall. Remember the distractors. The second choice may look okay, but the fourth choice may be worded in a way that makes it a slightly better choice. If you do not weigh all the choices, you are not maximizing your chances of correctly answering each question. p. 1485 Report content error Which rationale would the nurse use to explain to family members why older adult patients who fall have a high risk for developing a chronic subdural hematoma? Rationale Chronic subdural hematomas are more common in older adults because of the potentially larger subdural space due to brain atrophy. Changes in vasculature occur in the elderly but do not put the patient at risk for a subdural hematoma from a fall. With aging, a reduction in pain sensation may occur, but this is not the physiologic cause for the risk of a chronic subdural hematoma. The older adult patient does not normally experience a decreased level of consciousness; this is an alteration in mental status Older adult patients have larger subdural spaces. Changes in vasculature occur with older adult patients. Older adult patients experience a decrease in sensing their pain. There is a decreased level of consciousness in the older adult patient.
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3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 27/30 and is a pathologic symptom unrelated to the risk for chronic subdural hematoma. p. 1499 Report content error A patient’s blood pressure (BP) is 120/60 mm Hg and the intracranial pressure (ICP) is 24 mm Hg. After calculating the patient’s cerebral perfusion pressure (CPP), which interpretation would the nurse apply to the results? Rationale A normal CPP is 60 to 100 mm Hg. Determine the calculated CPP by subtracting the ICP from the mean arterial pressure (MAP). MAP = (systolic blood pressure [SBP] + 2[diastolic blood pressure (DBP)])/3: (120 mm Hg + 2[60 mm Hg])/3 = (120 mm Hg + 120 mm Hg)/3 = 240/3 = 80 mm Hg. MAP – ICP: 80 mm Hg (MAP) – 24 mm Hg (ICP) = a CPP of 56 mm Hg. The decreased CPP (<60 mm Hg) indicates an impaired cerebral blood flow and impaired autoregulation of the CPP. Because the ICP is 24 mm Hg, the pressure is elevated, preventing perfusion of the brain, and it requires treatment. High blood flow to the brain Normal ICP Impaired blood flow to the brain Adequate autoregulation of blood flow
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3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 28/30 pp. 1484-1485 Report content error Which position would the nurse expect a patient to display as decerebrate posturing when diagnosed with an elevated intracranial pressure (ICP) causing serious disruption of motor fibers in the midbrain and brainstem? Rationale Decerebrate posture (Choice 2) is when all four extremities are in rigid extension with hyperpronation of the forearms and plantar flexion of feet.
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3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 29/30 Decorticate posture (Choice 1) is internal rotation and adduction of the arms with flexion of the elbows, wrists, and fingers caused by interruption of voluntary motor tracts in the cerebral cortex. Decorticate response on one side of the body and decerebrate response on the other side of the body (Choice 3) may occur depending on the damage to the brain. Opisthotonic posturing (Choice 4) is decerebrate posture with the neck and back arched posteriorly and is potentially visualized with traumatic brain injury. p. 1487 Report content error Which medication is an osmotic diuretic that the nurse would prepare to administer to lower a patient’s intracranial pressure (ICP)? Rationale Mannitol is an osmotic diuretic given via IV to decrease ICP. Cimetidine is a histamine (H ) receptor blocker given to a patient receiving corticosteroids to prevent gastrointestinal ulcers and bleeding. Dexamethasone is a corticosteroid used to treat vasogenic edema. Hypertonic saline is an IV solution used to help reduce cerebral swelling. Mannitol Cimetidine Dexamethasone Hypertonic saline 2
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3/20/24, 7:21 PM Elsevier Adaptive Quizzing - Quiz performance https://eaqng.elsevier.com/#/quizPerformance/54956077 30/30 p. 1491
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