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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
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.
Correct Answer is A
Explanation
A. Atrial fibrillation: Atrial fibrillation is characterized by an irregularly irregular rhythm, absence of identifiable P waves, and irregular ventricular response. The heart rate in atrial fibrillation can be variable, and the absence of identifiable P waves indicates disorganized atrial electrical activity.
B. Sinus bradycardia: Sinus bradycardia is characterized by a regular rhythm with a heart rate less than 60 beats per minute (bpm) and normal P waves preceding each QRS complex. In sinus bradycardia, the PR interval and QRS duration are typically within normal limits.
C. Supraventricular tachycardia: Supraventricular tachycardia (SVT) is characterized by a regular rhythm with a heart rate greater than 100 bpm. SVT typically presents with narrow QRS complexes and may or may not have discernible P waves.
D. First-degree heart block: First-degree heart block is characterized by a prolonged PR interval (>0.20 seconds) but maintains a regular rhythm with normal QRS duration. In first-degree heart block, P waves are typically identifiable, and the rhythm is not irregular.
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