ITLS Adult Advanced 2 — Questions and Answers

Question 1: During a rapid trauma assessment on an unresponsive patient, which finding most urgently requires immediate intervention before continuing the survey?

Bruising over the mastoid process
Absent breath sounds on the left side (Correct answer)
A deformed left forearm
Abdominal rigidity

Correct answer: Absent breath sounds on the left side

Absent breath sounds indicate a potential tension pneumothorax or massive hemothorax, both immediately life-threatening conditions requiring intervention during the primary survey before proceeding.

In the ITLS Advanced primary survey, life threats are addressed as they are found. Absent unilateral breath sounds suggest tension pneumothorax or massive hemothorax, both of which can cause rapid cardiovascular collapse. Needle decompression or chest tube placement takes priority over continuing the assessment. Battle's sign (mastoid bruising) indicates basilar skull fracture but is not immediately life-threatening. Extremity deformities and abdominal rigidity are important findings but do not require the same immediacy of intervention as compromised ventilation.

Question 2: A 45-year-old male involved in a high-speed MVC presents with JVD, muffled heart sounds, and hypotension. What is the most likely diagnosis?

Tension pneumothorax
Cardiac tamponade (Correct answer)
Flail chest
Aortic dissection

Correct answer: Cardiac tamponade

Beck's triad—JVD, muffled heart sounds, and hypotension—is the classic presentation of cardiac tamponade, caused by blood accumulating in the pericardial sac and compressing the heart.

Cardiac tamponade occurs when blood or fluid accumulates in the pericardial space, restricting cardiac filling and reducing cardiac output. Beck's triad (JVD from impaired venous return, muffled heart sounds from fluid dampening, and hypotension from decreased cardiac output) is pathognomonic. Tension pneumothorax also causes JVD and hypotension but presents with absent breath sounds and tracheal deviation rather than muffled heart sounds. Flail chest causes paradoxical chest wall movement. Aortic dissection typically presents with tearing chest pain radiating to the back and blood pressure differentials between arms.

Question 3: Which medication is indicated for a trauma patient exhibiting signs of increased intracranial pressure with a GCS of 7?

Naloxone
Mannitol (Correct answer)
Epinephrine
Atropine

Correct answer: Mannitol

Mannitol is an osmotic diuretic used to reduce intracranial pressure by drawing fluid from brain tissue into the vascular space, appropriate for patients with signs of herniation.

In ITLS Advanced, management of increased ICP includes osmotic therapy. Mannitol (0.5-1 g/kg IV) draws water from brain parenchyma into the intravascular space, reducing cerebral edema and ICP. It is indicated when the patient shows signs of herniation such as unilateral pupil dilation, posturing, or rapidly declining GCS. Naloxone reverses opioid overdose. Epinephrine is used in cardiac arrest and anaphylaxis. Atropine treats symptomatic bradycardia. Hypertonic saline (3%) is an alternative to mannitol that is also gaining favor in current protocols.

Question 4: In the ITLS Advanced assessment, what is the recommended ventilation rate for an intubated adult trauma patient without signs of herniation?

8-10 breaths per minute
10-12 breaths per minute (Correct answer)
12-20 breaths per minute
20-24 breaths per minute

Correct answer: 10-12 breaths per minute

The recommended ventilation rate for an intubated adult trauma patient is 10-12 breaths per minute. Hyperventilation should be avoided as it decreases cardiac preload and cerebral perfusion.

ITLS guidelines recommend 10-12 breaths per minute for intubated adult trauma patients. Hyperventilation (rates above 12) causes increased intrathoracic pressure which decreases venous return and cardiac output—particularly harmful in hypovolemic trauma patients. It also causes cerebral vasoconstriction, potentially worsening brain ischemia. The only exception is brief, controlled hyperventilation at 20 breaths/minute for patients showing active signs of brain herniation (unilateral fixed dilated pupil, posturing) as a temporizing measure. End-tidal CO2 monitoring should guide ventilation to maintain EtCO2 of 35-40 mmHg.

Question 5: A trauma patient has a systolic BP of 78 mmHg and an estimated blood loss of 1500 mL. According to ITLS classification, what class of hemorrhage is this?

Class I
Class II
Class III (Correct answer)
Class IV

Correct answer: Class III

Class III hemorrhage involves 1500-2000 mL blood loss (30-40% of blood volume) and is characterized by hypotension, tachycardia, and altered mental status.

Hemorrhage classification helps guide resuscitation. Class I (<750 mL, <15%) shows minimal symptoms. Class II (750-1500 mL, 15-30%) shows tachycardia and narrowed pulse pressure but maintained systolic BP. Class III (1500-2000 mL, 30-40%) is the first class where systolic hypotension occurs, along with tachycardia >120, decreased urine output, and anxiety/confusion. Class IV (>2000 mL, >40%) presents with severe hypotension, marked tachycardia, negligible urine output, and lethargy. This patient's 1500 mL loss with hypotension fits Class III, requiring aggressive fluid resuscitation and likely blood transfusion.

Question 6: During rapid sequence intubation of a trauma patient, which agent is preferred for induction when increased ICP is suspected?

Ketamine
Midazolam
Etomidate (Correct answer)
Propofol

Correct answer: Etomidate

Etomidate is preferred for RSI in trauma patients with suspected elevated ICP because it provides hemodynamic stability and does not increase intracranial pressure.

Etomidate (0.3 mg/kg IV) is favored in trauma RSI because it provides reliable sedation with minimal effects on blood pressure and heart rate—critical in potentially hypovolemic patients. It does not raise ICP, making it suitable when head injury is suspected. Ketamine was historically avoided in head trauma due to concerns about ICP elevation, though recent evidence suggests it may be safe; many ITLS protocols still prefer etomidate. Midazolam causes significant hypotension. Propofol also drops blood pressure substantially and is poorly suited for hemodynamically unstable patients. Succinylcholine or rocuronium is then used as the paralytic agent.

ITLS Adult Advanced 2

During a rapid trauma assessment on an unresponsive patient, which finding most urgently requires immediate intervention before continuing the survey?