The Advanced Trauma Life Support course emphasizes the "ABCDE" approach to trauma care, ensuring that life-threatening injuries are identified and treated immediately. Mastering these protocols through rigorous ATLS certification training is essential for any healthcare provider working in emergency or trauma environments.

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ATLS Exam at a Glance

According to American College of Surgeons (ACS), Committee on Trauma, “Reach a passing grade on a multiple-choice examination.”^[1]

Worked examples: how to reason through ATLS questions

These are practice questions written for this site, not questions from the real exam. Each explanation shows why the right answer is right and why the others are wrong.

Example 1

Question: The ATLS 10th edition emphasizes that the MOST preventable cause of death in trauma is:

1. Traumatic brain injury
2. Hemorrhage
3. Sepsis
4. Airway compromise

Answer: B. Hemorrhage

Explanation:

Hemorrhage is correct. Bleeding is the most common cause of preventable death after injury, and that is why the ATLS approach looks for and controls major bleeding early.

Traumatic brain injury is a leading cause of death, but much of that damage happens at impact and cannot be undone. Sepsis is a late complication, not the usual cause of early preventable death. Airway compromise is deadly and is dealt with at the very start of assessment, but it is more often recognised and fixed quickly than uncontrolled bleeding is.

Rule to remember: when a question asks what kills preventably in trauma, think about what can be found and fixed fastest. Hemorrhage is the answer to look for first.

Example 2

Question: A trauma patient presents with hypotension, jugular venous distention, and diminished breath sounds on the left side. Which of the following is the most appropriate immediate intervention according to ATLS guidelines?

1. Infusion of 2 liters of crystalloid solution
2. Application of a pelvic binder
3. Insertion of a chest tube in the 5th intercostal space
4. Needle decompression of the left chest

Answer: D. Needle decompression of the left chest

Explanation:

Needle decompression of the left chest is correct. Low blood pressure, distended neck veins and reduced breath sounds on one side point to tension pneumothorax, a form of obstructive shock. The trapped air must be released right away, before any imaging.

Infusing 2 liters of crystalloid does not remove the obstruction and can make things worse. A pelvic binder treats bleeding from a pelvic fracture, which does not explain the distended neck veins or one-sided breath sounds. A chest tube in the 5th intercostal space is the lasting treatment, but it follows decompression and is not the immediate step.

Rule to remember: treat the cause of the shock you can identify, and do the fastest life-saving step first.

Example 3

Question: What percentage of TBSA does one patient palm (including fingers) represent?

1. 0.5%
2. 1%
3. 2%
4. 3%

Answer: B. 1%

Explanation:

1% is correct. The patient's own palm, including the fingers, is about 1% of total body surface area (TBSA). Clinicians use it as a quick measuring tool when a burn is patchy or scattered and the standard charts are hard to apply.

0.5% is too small and would lead you to overestimate the burn. 2% and 3% are too large and would lead you to underestimate how many palm-sized areas are burned. Both errors matter because the TBSA estimate drives early decisions about fluids and transfer.

Rule to remember: use the size of the patient's own hand, not yours, because palm size scales with body size. Count how many patient palms fit over the burned area.

How to use these practice tests

Start with the official ATLS course material from the American College of Surgeons, because it defines what you are expected to know. Then use these practice sets to find where you are weak.

1. Begin with Initial Assessment and Management. The later topics build on its ordered approach to a trauma patient.
2. Work through the airway, shock, thoracic and head topics. Examples are Airway and Ventilatory Management and Shock Assessment and Management.
3. Move on to the remaining areas, such as Spine and Spinal Cord Trauma and Thermal and Electrical Injuries, and finish with the transfer topic.
4. Keep a short list of every question you miss. Write the reason in your own words, then look up that topic in the official material.
5. Return to your missed topics a few days later and retry them without looking at the answers.
6. If you are taking the hybrid format, practise saying your assessment steps aloud in order, since the skills sessions are hands-on.

Aim to understand why each wrong option is wrong. The 75% post-test score needed for CME is easier to reach when you can reason through a scenario than when you recall isolated facts.

Many hospitals and residency programs cover the ATLS certification cost for their employees. Check with your department administrator about reimbursement or direct billing options before paying out of pocket.

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There is typically a 6-month grace period after your ATLS certification expires to take a refresher course. If you lapse beyond this, you must retake the full 2-day provider course.

Sources & last verified

1. American College of Surgeons (ACS), Committee on Trauma — number of questions, eligibility (official source). “Reach a passing grade on a multiple-choice examination.” Verified Oct 17, 2026 · source checked Oct 17, 2026.
2. msfacs.zendesk.com — passing score, validity (official source). “CME is granted only upon successful completion with a minimum post-test score of 75%.” Verified Oct 15, 2026.
3. American College of Surgeons (ACS), Committee on Trauma — renewal (official source). “Providers have a 6-month grace period after their status expires to take a Refresher course. However they are not considered ATLS verified during that time.” Verified Oct 18, 2026 · source checked Oct 18, 2026.
4. American College of Surgeons (ACS), Committee on Trauma — delivery (official source). “Hands-on, in-person skills sessions in simulated trauma settings” Verified Oct 18, 2026 · source checked Oct 18, 2026.

How we verify: editorial & fact-checking policy. Report an error: contact us.

Sample ATLS - Advanced Trauma Life Support Practice Questions

Try these questions from our free ATLS - Advanced Trauma Life Support practice tests. The correct answer and an explanation follow each question.

1. Which hemostatic dressing is recommended by ATLS guidelines for uncontrolled external extremity hemorrhage not amenable to tourniquet?

   • A. Standard dry gauze with firm direct pressure alone
   • B. Combat gauze (kaolin-impregnated) or similar zeolite/chitosan-based hemostatic agent
   • C. Petroleum-impregnated gauze to keep the wound moist
   • D. Silver-impregnated antimicrobial dressings

   Answer: B. Combat gauze (kaolin-impregnated) or similar zeolite/chitosan-based hemostatic agent

   ATLS recommends hemostatic dressings such as kaolin-impregnated combat gauze or chitosan-based products packed firmly into wounds that cannot be controlled with a tourniquet.

2. According to ATLS guidelines and general medical-legal principles, when does the responsibility of the referring physician for the care of a transferred trauma patient officially end?

   • A. When the transport team arrives at the bedside to assume care.
   • B. When the patient physically leaves the premises of the referring hospital.
   • C. Once the accepting physician at the receiving facility has agreed to the transfer over the phone.
   • D. When the patient has been safely delivered to the receiving facility and care has been formally assumed by the accepting physician.

   Answer: D. When the patient has been safely delivered to the receiving facility and care has been formally assumed by the accepting physician.

   The referring physician and their institution retain full responsibility for the patient's care throughout the transfer process. This responsibility only ceases once the patient has arrived at the receiving institution and the medical staff there has formally accepted and assumed care of the patient.

3. A 30-year-old male is brought to the trauma bay after a high-speed motor vehicle collision. His vital signs are: HR 130 bpm, BP 90/60 mmHg, RR 35 breaths/min. He is anxious and confused. His skin is cool and clammy. Based on the ATLS classification of hemorrhagic shock, what is the estimated percentage of blood volume loss?

   • A. Up to 15% (Class I)
   • B. 15-30% (Class II)
   • C. 30-40% (Class III)
   • D. >40% (Class IV)

   Answer: C. 30-40% (Class III)

   The patient's clinical presentation, including significant tachycardia (>120 bpm), hypotension, tachypnea, and altered mental status (anxious, confused), is consistent with Class III hemorrhagic shock. This class corresponds to an estimated blood volume loss of 30-40%.

4. A patient with severe facial trauma is making gurgling sounds and has difficulty breathing. According to ATLS guidelines, which of the following is the most appropriate initial maneuver to establish an airway?

   • A. Nasotracheal intubation.
   • B. Immediate surgical cricothyroidotomy.
   • C. Suctioning the oropharynx while applying a jaw-thrust maneuver.
   • D. Placing an oropharyngeal airway.

   Answer: C. Suctioning the oropharynx while applying a jaw-thrust maneuver.

   In a patient with a potentially obstructed airway due to blood or secretions, the initial steps are to clear the airway with suction and use basic maneuvers like the jaw-thrust (preferred in trauma to protect the C-spine) or chin-lift to open the airway. More advanced airways like intubation or a surgical airway are considered if these initial steps fail. Nasotracheal intubation is relatively contraindicated in severe facial trauma due to the risk of intracranial placement.

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