Chapter 34 Head and Spine Trauma Flashcards
1. The galea aponeurotica is: A) the dense fibrous membrane covering the surface of the cranium. B) a loose connective tissue that is easily damaged during scalping injuries. C) the subcutaneous layer of the scalp that contains easily damaged major veins. D) a tendon expansion that connects the frontal and occipital muscles of the cranium.
Ans: D Page: 1644
- The ______________ consists of eight bones that encase and protect the brain. A) skull B) cerebrum C) cranial vault D) cribriform plate
Ans: C Page: 1644
- The brain connects to the spinal cord through a large opening at the base of the skull called the: A) cribriform plate. B) foramen magnum. C) occipital condyle. D) palatine bone.
Ans: B Page: 1644
- At what age do the sutures of the skull solidify and the fontanelles close? A) 18 months B) 2 years C) 36 months D) 4 years
Ans: A Page: 1644
- The cone-shaped section of bone located at the base of each temporal bone is called the: A) lamboid suture. B) mastoid process. C) cribriform plate. D) ethmoid bone.
Ans: B Page: 1644
- The crista galli: A) is the anatomic point of attachment of the meninges. B) is divided into the anterior, middle, and posterior fossae. C) is a horizontal bone perforated with numerous foramina. D) allows the passage of the olfactory nerves from the nasal cavity.
Ans: A Page: 1644
- The occipital condyles are the: A) key anatomic structures to which the meninges are attached. B) passageways for the olfactory nerves to exit the nasal cavity. C) points of articulation between the skull and vertebral column. D) horizontal bones of the cribriform plate that contain foramina.
Ans: C Page: 1645
- Which of the following statements regarding the brain is correct? A) The brain uses 45 to 50 L/min of oxygen. B) The brain occupies approximately 60% of the cranium. C) The brain metabolizes minimal amounts of glucose. D) The brain has the ability to store oxygen and glucose.
Ans: A Page: 1645
- Paralysis of the extremities would MOST likely result from injury to the: A) cerebellum. B) diencephalon. C) cerebral cortex. D) hypothalamus.
Ans: C Page: 1645
- The parietal lobe of the brain: A) is where the optic nerve originates and processes vision. B) is important for voluntary motor action and personality traits. C) controls somatic functions for the contralateral side of the body. D) controls functions such as long-term memory, taste, and smell.
Ans: C Page: 1646
- Injury to the temporal lobe on the left side would MOST likely cause: A) abnormal speech. B) visual disturbances. C) sleep abnormalities. D) lack of coordination.
Ans: A Page: 1646
- Which of the following statements regarding the hypothalamus is correct? A) The hypothalamus works in conjunction with the subthalamus and regulates motor functions of the body. B) The hypothalamus is located in the inferior portion of the diencephalon and influences body movement in response to fear. C) The hypothalamus is located between the brainstem and cerebrum and is solely responsible for maintaining body temperature. D) The hypothalamus is the most inferior portion of the diencephalon and controls functions such as hunger, sleep, and vomiting.
Ans: D Page: 1646-1647
- The cerebellum is located in the ____________ part of the brain and is responsible for _______________. A) anteromedial, voluntary motor functions B) inferoposterior, posture and equilibrium C) anterolateral, short- and long-term memory D) inferolateral, involuntary motor functions
Ans: B Page: 1647
- What portion of the brainstem is responsible for maintenance of consciousness, specifically one’s level of arousal? A) Diencephalon B) Limbic system C) Basal ganglia D) Reticular activating system
Ans: D Page: 1647
- The respiratory centers of the brainstem lie within the: A) basal ganglia. B) pons and medulla. C) diencephalon. D) midbrain.
Ans: B Page: 1647
- The dura mater: A) folds in to form the tentorium, a structure that separates the cerebral hemispheres from the cerebellum and brainstem. B) is the middle meningeal layer and is comprised of a delicate transparent membrane that is damaged easily by trauma. C) anatomically separates the cerebellum and the brainstem and contains vasculature that resembles a spider web. D) is the inner meningeal layer and is comprised of a thin, translucent, highly vascular membrane that adheres firmly directly to the surface of the brain.
Ans: A Page: 1648
- Cerebrospinal fluid is manufactured in the __________ of the brain and serves to ______________. A) subdural space, prevent infection B) cortex, protect the brain from injury C) ventricles, cushion and protect the brain D) subarachnoid space, oxygenate the brain
Ans: C Page: 1648
- Cerebrospinal fluid drainage from the ears is MOST indicative of: A) a nasal fracture. B) intracerebral bleeding. C) an epidural hematoma. D) a skull fracture.
Ans: D Page: 1663
- Death following a head injury is MOST often the result of: A) an epidural hematoma. B) trauma to the brain. C) airway compromise. D) spinal cord transection.
Ans: B Page: 1662
- Most head injuries are the result of: A) assault or abuse. B) motor vehicle crashes. C) sports-related incidents. D) falls from a significant height.
Ans: B Page: 1662
- Which of the following statements regarding a closed head injury is correct? A) In a closed head injury, the dura mater remains intact. B) Diffuse brain injury occurs with all open head injuries. C) Closed head injuries are less common than open head injuries. D) Intracranial pressure is usually minimal in a closed head injury.
Ans: A Page: 1662
- Bleeding from a scalp laceration with an underlying skull deformity: A) may contribute to hypovolemia in adults. B) commonly causes severe shock in adults. C) should be controlled with firm direct pressure. D) is limited due to the scalp’s minimal vasculature.
Ans: A Page: 1669
- Which of the following types of skull fracture would be the LEAST likely to present with gross physical signs? A) Open fracture B) Depressed fracture C) Basilar fracture D) Linear fracture
Ans: D Page: 1663
- A scalp laceration that occurs in conjunction with a nondisplaced skull fracture: A) typically causes significant hypertension. B) should be treated with firm direct pressure. C) is considered to be an open skull fracture. D) often causes an infection that progresses rapidly.
Ans: C Page: 1663
- What type of skull fracture is MOST common following high-energy direct trauma to a small surface area of the head with a blunt object? A) Depressed fracture B) Open fracture C) Basilar fracture D) Nondisplaced fracture
Ans: A Page: 1663
- Which of the following signs of a basilar skull fracture would MOST likely be observed in the prehospital setting? A) Battle’s sign B) cerebrospinal fluid drainage from the ear C) Ecchymosis around the eyes D) Bruising over the mastoid process
Ans: B Page: 1663
- Open fractures of the cranial vault: A) cause death due to increased intracranial pressure. B) are associated with a high risk of bacterial meningitis. C) typically cause lethal atrial cardiac dysrhythmias. D) are uncommonly associated with multisystem trauma.
Ans: B Page: 1663-1664
- Secondary brain injuries include all of the following, EXCEPT: A) axonal injury. B) cerebral edema. C) cerebral ischemia. D) intracranial hemorrhage.
Ans: A Page: 1664
- When an unrestrained passenger’s head strikes the windshield of a motor vehicle following rapid deceleration: A) the anterior portion of the brain sustains stretching or tearing injuries, and the posterior portion of the brain sustains compression injuries. B) the head falls back against the headrest or seat and the brain collides with the rear of the skull, resulting in direct injury to the occipital lobe. C) the brain initially strikes the rear of the skull, resulting in direct bruising, and then rebounds and strikes the front part of the skull. D) compression injuries occur to the anterior portion of the brain, and stretching or tearing injuries occur to the posterior portion of the brain.
Ans: D Page: 1664
- Following a traumatic brain injury, initial swelling of the brain occurs due to: A) severe ischemia. B) acute hypertension. C) cerebral vasodilation. D) an increase in cerebral water.
Ans: C Page: 1664
- The MOST disastrous consequence of a severe traumatic brain injury is: A) an increase in intracranial pressure. B) an increase in mean arterial pressure. C) severe hypertension and bradycardia. D) a decrease in cerebral perfusion pressure.
Ans: D Page: 1664-1665
- Autoregulation is defined as: A) reflex bradycardia that occurs secondary to systemic hypertension. B) an increase in mean arterial pressure to maintain cerebral blood flow. C) the forcing of cerebrospinal fluid into the spinal cord as intracranial pressure increases. D) a decrease in cerebral perfusion pressure that reduces intracranial pressure.
Ans: B Page: 1665
- Prehospital treatment of the patient with a traumatic brain injury must focus primarily on: A) maintaining cerebral perfusion pressure. B) hyperventilating the patient at 20 breaths/min. C) maintaining a systolic blood pressure of at least 120 mm Hg. D) taking measures to decrease intracranial pressure.
Ans: A Page: 1665
- Early signs and symptoms of increased intracranial pressure include: A) headache and vomiting. B) hypertension and bradycardia. C) widening of the pulse pressure. D) arm flexion and leg extension.
Ans: A Page: 1665
- Decerebrate posturing is characterized by: A) flexion of the arms and extension of the legs. B) inward flexion of the wrists and flexed knees. C) extension of the arms and extension of the legs. D) pulling in of the arms toward the core of the body.
Ans: C Page: 1665
- Which of the following statements regarding a cerebral concussion is correct? A) A cerebral concussion is a moderate focal brain injury. B) Concussions are usually not associated with structural brain injury. C) Prolonged loss of consciousness is common with a cerebral concussion. D) A concussion results in permanent dysfunction of the cerebral cortex.
Ans: B Page: 1665
- A diffuse axonal injury: A) is a specific, grossly observable brain injury that can easily be diagnosed with a computer tomography scan of the head. B) involves stretching, shearing, or tearing of the extension of the neuron that conducts electrical impulses away from the cell body. C) results in severe stretching or tearing of the portion of the nerve cell that receives sensory messages from the rest of the body. D) is generally associated with better neurologic outcomes than a cerebral concussion because permanent brain damage does not occur.
Ans: B Page: 1666
- Unlike a cerebral concussion, a cerebral contusion is: A) typically not associated with retrograde amnesia or focal neurologic deficits. B) a type of diffuse axonal injury that often leads to permanent neurologic damage. C) a diffuse brain injury that results in severe intracranial hemorrhage and pressure. D) associated with physical brain damage and more pronounced neurologic deficits.
Ans: D Page: 1666
- A moderate diffuse axonal injury: A) is generally characterized by a brief loss of consciousness, with or without retrograde amnesia. B) causes a prolonged loss of consciousness and affects axons in both cerebral hemispheres. C) is the most common result of blunt head trauma and is associated with temporary neuronal dysfunction. D) produces an immediate loss of consciousness and residual neurologic deficits when the patient wakes up.
Ans: D Page: 1667
- An epidural hematoma typically causes rapid deterioration in the head-injured patient’s condition because: A) numerous axons are severely damaged. B) the meningeal veins are often disrupted. C) it is associated with brisk arterial bleeding. D) concomitant spinal cord injury is often present.
Ans: C Page: 1666-1667
- Common clinical findings associated with a subdural hematoma include all of the following, EXCEPT: A) rapidly increasing intracranial pressure. B) an underlying skull fracture. C) a fluctuating level of consciousness. D) unilateral hemiparesis or slurred speech.
Ans: A Page: 1667-1668
- A subdural hematoma is classified as acute if clinical signs and symptoms develop: A) immediately following the injury. B) within 24 hours following the injury. C) within 36 hours following the injury. D) within 48 hours following the injury.
Ans: B Page: 1668
- Chronic subdural hematomas are MOST commonly seen in patients who: A) are less than 2 years of age. B) have alcoholism. C) are prone to hypoglycemia. D) have high cholesterol.
Ans: B Page: 1668
- What type of intracranial hemorrhage would MOST likely be caused by a penetrating head injury? A) Subdural hematoma B) Intracerebral hematoma C) Epidural hematoma D) Subarachnoid hemorrhage
Ans: B Page: 1668
- Signs of meningeal irritation, such as nuchal rigidity, are MOST commonly seen in patients with a(n): A) subdural hematoma. B) epidural hematoma. C) intracerebral hematoma. D) subarachnoid hemorrhage.
Ans: D Page: 1668
- When assessing the severity of a traumatic brain injury, the MOST important assessment parameter is the patient’s: A) initial Glasgow Coma Scale score. B) blood pressure. C) level of consciousness. D) response to verbal stimuli.
Ans: C Page: 1658, 1668
- Pupils that are slow (sluggish) to react to light: A) are a sign of cerebral hypoxia. B) indicate impending brain herniation. C) suggest significant intracranial pressure. D) indicate compression of an oculomotor nerve.
Ans: A Page: 1658-1659
- Hyperventilation of the brain-injured patient: A) shunts oxygen away from the brain and may result in decreased cerebral perfusion pressure. B) has clearly demonstrated decreased mortality and morbidity in patients with a severe head injury. C) causes cerebral vasodilation with increased intracranial pressure and should be avoided. D) is only appropriate if the patient is unresponsive and has bilaterally dilated and sluggishly reactive pupils.
Ans: A Page: 1654
- A 19-year-old woman fell from a second story window and landed on her head. She is unconscious with a blood pressure of 148/94 mm Hg, heart rate of 58 beats/min, and irregular respirations of 8 breaths/min. Further assessment reveals blood draining from her nose and bilaterally dilated pupils that are slow to react. In addition to employing full spinal precautions, the MOST appropriate treatment for this patient involves: A) hyperventilating her with a bag-mask device at a rate of 20 breaths/min, starting two large-bore IV lines, applying a cardiac monitor, administering 5 mg of Valium to prevent seizures, and transporting to a trauma center. B) preoxygenating her with a bag-mask device and 100% oxygen for 2 to 3 minutes, performing nasotracheal intubation, transporting at once, starting at least one large-bore IV line en route, and obtaining her Glasgow Coma Scale score. C) intubating her trachea after preoxygenating her for 2 to 3 minutes with a bag-mask device, transporting immediately, starting at least one large-bore IV en route, applying a cardiac monitor, and performing frequent neurologic assessments. D) applying oxygen via nonrebreathing mask, covering her with blankets, starting an IV of normal saline set to keep the vein open, applying a cardiac monitor, initiating transport, and monitoring her pupils while en route to the hospital.
Ans: C Page: 1653-1655
- A male patient with a closed head injury opens his eyes in response to pain, makes incomprehensible sounds, and responds to pain with flexion of his arms. His Glasgow Coma Scale score is ___, and the MOST appropriate treatment for him involves: A) 6; intubation, hyperventilation at a rate of 20 breaths/min, two large-bore IV lines running wide open, keeping him warm, and maintaining his oxygen saturation at greater than 90%. B) 7; intubation, ventilations performed at a rate of 10 breaths/min, IV fluids as needed to maintain a systolic blood pressure of at least 90 mm Hg, and maintaining his oxygen saturation at greater than 95%. C) 8; ventilation assistance with a bag-mask device, a 2-L bolus of normal saline or lactated Ringer’s solution, elevating his head 12 inches, and hyperventilating him if his heart rate falls below 60 beats/min. D) 9; high-flow oxygen via nonrebreathing mask, IV fluids as needed to maintain a systolic blood pressure of at least 100 mm Hg, monitoring his oxygen saturation, and administering 1.5 mg/kg of lidocaine to decrease intracranial pressure.
Ans: B Page: 1653-1655, 1658
- The MOST effective method for decreasing morbidity and mortality associated with spinal cord injury is: A) rapid transportation to a trauma center. B) public education and prevention strategies. C) minimizing scene time to 10 minutes or less. D) routine use of spinal motion restriction precautions.
Ans: B Page: 1670
- According to the National Spinal Cord Injury Database, MOST spinal cord injuries are caused by: A) acts of violence. B) athletic activities. C) falls in the elderly. D) motor vehicle crashes.
Ans: D Page: 1670