ATLS - Advanced Trauma Life Support Head Trauma Questions and Answers 1 — Questions and Answers
Question 1: A 22-year-old male is brought to the emergency department after being struck on the side of the head with a bat. He briefly lost consciousness at the scene but was awake and talking upon arrival, complaining only of a headache. Thirty minutes later, he becomes drowsy, his right pupil becomes fixed and dilated, and he develops left-sided weakness. What is the most likely diagnosis?
- Diffuse axonal injury
- Acute subdural hematoma
- Epidural hematoma (Correct answer)
- Subarachnoid hemorrhage
Correct answer: Epidural hematoma
The classic presentation of an epidural hematoma involves trauma to the temporal area, a brief loss of consciousness, followed by a 'lucid interval' where the patient seems relatively well, and then rapid neurological deterioration. This decline is due to arterial bleeding, most commonly from the middle meningeal artery, which causes rapid expansion of the hematoma and compression of the brain, leading to signs of uncal herniation like an ipsilateral fixed and dilated pupil.
Question 2: In the initial management of a patient with a severe traumatic brain injury (TBI), what is the primary goal according to ATLS principles?
- To administer mannitol immediately to all patients with a GCS of 8.
- To prevent secondary brain injury. (Correct answer)
- To obtain a head CT scan before initiating any fluid resuscitation.
- To induce therapeutic hypothermia in the trauma bay.
Correct answer: To prevent secondary brain injury.
The primary goal in managing severe TBI is to prevent secondary brain injury. The initial trauma does not determine the final outcome; secondary insults like hypotension (impaired cerebral perfusion) and hypoxia (lack of oxygen) significantly worsen neurological outcomes. All initial management efforts are directed at maintaining adequate oxygenation and blood pressure to protect the injured brain.
Question 3: A trauma patient is assessed to have a Glasgow Coma Scale (GCS) score where they open their eyes to a painful stimulus, moan and make incomprehensible sounds, and withdraw their limb from pain. What is the patient's total GCS score?
- 7
- 8 (Correct answer)
- 9
- 6
Correct answer: 8
The GCS score is calculated by summing the scores from the three categories: Eye Opening (To pain = 2), Verbal Response (Incomprehensible sounds = 2), and Best Motor Response (Withdrawal from pain = 4). The total score is 2 + 2 + 4 = 8. A GCS of 8 or less typically indicates a severe brain injury.
Question 4: A 50-year-old female involved in a high-speed collision is noted to have a blood pressure of 190/110 mmHg, a heart rate of 48 bpm, and an irregular respiratory pattern. This set of vital signs is known as Cushing's triad and is a late sign of what critical condition?
- Spinal shock
- Hemorrhagic shock Class IV
- Impending brainstem herniation (Correct answer)
- Fat embolism syndrome
Correct answer: Impending brainstem herniation
Cushing's triad consists of hypertension (with a widening pulse pressure), bradycardia, and irregular respirations. It is a late and ominous physiological response to severely increased intracranial pressure (ICP) and indicates that the brainstem is being compressed, signaling impending herniation.
Question 5: Which of the following is an appropriate, temporary measure for a patient with an acute traumatic brain injury who is demonstrating signs of active brain herniation, such as a unilaterally blown pupil?
- Administration of high-dose corticosteroids
- Prophylactic hyperventilation to a PaCO2 below 25 mmHg for several hours
- Brief, controlled hyperventilation to a target PaCO2 of 30-35 mmHg (Correct answer)
- Immediate placement of a ventricular drain in the emergency department
Correct answer: Brief, controlled hyperventilation to a target PaCO2 of 30-35 mmHg
For a patient with acute neurological deterioration suggestive of herniation, brief and controlled hyperventilation is a recognized temporizing measure. It causes cerebral vasoconstriction, reducing cerebral blood flow and thereby acutely lowering intracranial pressure. Prolonged or aggressive hyperventilation (PaCO2 < 25 mmHg) is harmful as it can cause cerebral ischemia. Corticosteroids are not indicated for TBI.
Question 6: According to ATLS 10th edition guidelines, what is the minimum target systolic blood pressure (SBP) that should be maintained in a 60-year-old patient with a traumatic brain injury to prevent secondary injury from hypotension?
- ≥90 mmHg
- ≥110 mmHg
- ≥100 mmHg (Correct answer)
- ≥120 mmHg
Correct answer: ≥100 mmHg
The ATLS 10th edition guidelines emphasize avoiding hypotension to prevent secondary brain injury. For patients aged 50 to 69 years, the target systolic blood pressure (SBP) should be maintained at or above 100 mmHg. For other age groups (15-49 or >70), the target is ≥110 mmHg. A single hypotensive episode can significantly worsen outcomes.
ATLS - Advanced Trauma Life Support Head Trauma Questions and Answers 1
A 22-year-old male is brought to the emergency department after being struck on the side of the head with a bat.
He briefly lost consciousness at the scene but was awake and talking upon arrival, complaining only of a headache.
Thirty minutes later, he becomes drowsy, his right pupil becomes fixed and dilated, and he develops left-sided weakness.
What is the most likely diagnosis?