A nurse is reinforcing teaching to a group of high school students about how penetrating traumatic brain injuries cause damage to the brain. Which of the following statements should the nurse include in the teaching?
"Damage occurs from the penetrating object shattering the skull and causing an infection."
"Damage to the brain is related to coup and contrecoup injuries."
"Damage occurs from the penetrating injury causing leakage of cerebrospinal fluid."
"Damage to the brain is related to the size, route, and rate of speed of the object entering the brain."
The Correct Answer is D
A) "Damage occurs from the penetrating object shattering the skull and causing an infection." While penetrating traumatic brain injuries can lead to skull fractures and subsequent infections, the primary mechanism of brain damage in these injuries is related to the direct impact of the penetrating object on brain tissue rather than the shattering of the skull.
B) "Damage to the brain is related to coup and contrecoup injuries." Coup and contrecoup injuries occur when the brain impacts the skull's interior surface due to rapid deceleration or acceleration, commonly seen in closed head injuries such as concussions. Penetrating traumatic brain injuries involve direct penetration of foreign objects into the brain tissue, and coup-contrecoup injuries are not typically associated with these types of injuries.
C) "Damage occurs from the penetrating injury causing leakage of cerebrospinal fluid." While penetrating injuries may result in cerebrospinal fluid leakage, this is not the primary mechanism through which they cause brain damage. Leakage of cerebrospinal fluid is more commonly associated with certain types of head trauma, such as skull fractures, rather than solely penetrating injuries.
D) "Damage to the brain is related to the size, route, and rate of speed of the object entering the brain." This statement is correct. The extent of brain damage in penetrating traumatic brain injuries depends on various factors, including the size, shape, and velocity of the penetrating object, as well as the route it takes through the brain tissue. Larger, faster-moving objects tend to cause more extensive damage, whereas smaller objects or those with slower velocities may cause more localized damage. Therefore, understanding these factors is crucial in assessing and managing patients with penetrating traumatic brain injuries.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Marfan's syndrome: Marfan's syndrome is a genetic disorder that affects the connective tissue in the body, predisposing individuals to various cardiovascular, skeletal, and ocular abnormalities. While Marfan's syndrome can present with certain cranial and intracranial manifestations, such as dural ectasia and intracranial aneurysms, it is not typically considered a direct risk factor for traumatic brain injury (TBI).
B. Hypercarbia: Hypercarbia refers to elevated levels of carbon dioxide (CO2) in the blood. While severe hypercarbia can lead to cerebral vasodilation and potentially exacerbate intracranial pressure in individuals with traumatic brain injury, it is not considered a direct risk factor for TBI itself.
C. Falls: Falls are a significant risk factor for traumatic brain injury (TBI), particularly in older adults and young children. Falls can occur due to various factors such as environmental hazards, impaired mobility, balance issues, or neurological conditions. Falls are a leading cause of TBI-related emergency department visits, hospitalizations, and fatalities.
D. Ventriculostomy: Ventriculostomy involves the placement of a catheter into the ventricular system of the brain to monitor intracranial pressure (ICP) or drain cerebrospinal fluid (CSF). While ventriculostomy is a procedure commonly performed in the management of severe traumatic brain injury to monitor and manage intracranial pressure, it is not a risk factor for TBI itself.
Correct Answer is B
Explanation
A. Severe myopia: Severe myopia, or nearsightedness, is not a typical manifestation of Meniere's disease. Meniere's disease primarily affects the inner ear and is characterized by symptoms related to balance and hearing rather than vision.
B. Vertigo: Meniere's disease is a disorder of the inner ear that causes episodes of vertigo, which is a sensation of spinning or dizziness. Vertigo is a hallmark symptom of Meniere's disease and is often accompanied by nausea, vomiting, and a feeling of fullness or pressure in the affected ear.
C. Anosmia: Anosmia refers to a loss of the sense of smell and is not typically associated with Meniere's disease. Meniere's disease primarily affects the vestibular system (balance) and auditory system (hearing) rather than the sense of smell.
D. Photopsia: Photopsia refers to the perception of flashes of light in the visual field and is not a typical manifestation of Meniere's disease. Meniere's disease primarily affects the inner ear and is not directly related to visual disturbances.
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