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ATLS Peripheral Perfusion and Limb
Threat Practice Test Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A Instant Download
Pdf
___________________________________________________________________
1. A 32-year-old patient arrives after a motorcycle crash with a mangled lower
extremity. The foot is cool, pale, and pulseless. What is the most immediate
priority?
A. Obtain a complete vascular history
B. Restore adequate perfusion while addressing life-threatening injuries
C. Apply a long-leg cast
D. Begin range-of-motion exercises
Answer: Restore adequate perfusion while addressing life-threatening injuries
Rationale: In Advanced Trauma Life Support (ATLS), hemorrhage control,
resuscitation, and recognition of threatened limb ischemia must occur rapidly. A
pulseless, cool extremity after major trauma may represent an arterial injury
requiring urgent intervention.
2. Which finding is most concerning for an acutely threatened extremity?
,A. Mild swelling
B. Small superficial abrasion
C. Absent distal arterial pulse with sensory loss
D. Localized bruising
Answer: Absent distal arterial pulse with sensory loss
Rationale: Acute limb ischemia is classically recognized by findings such as pain,
pallor, pulselessness, paresthesia, paralysis, and poikilothermia. Sensory or
motor deficits indicate an advanced degree of ischemia.
3. A trauma patient has a cold, pale foot with absent dorsalis pedis and
posterior tibial pulses. Which examination should be performed
immediately?
A. Abdominal examination only
B. Complete neurovascular examination of the affected limb and comparison
with the opposite limb
C. Ophthalmologic examination
D. Pulmonary function testing
Answer: Complete neurovascular examination of the affected limb and
comparison with the opposite limb
Rationale: Neurovascular assessment should include pulses, capillary refill, skin
temperature and color, motor function, and sensation. Comparison with the
contralateral extremity helps identify abnormalities.
4. Which pulse is normally assessed on the dorsum of the foot?
A. Femoral pulse
B. Popliteal pulse
C. Posterior tibial pulse
D. Dorsalis pedis pulse
Answer: Dorsalis pedis pulse
,Rationale: The dorsalis pedis artery is palpated on the dorsum of the foot,
usually lateral to the extensor hallucis longus tendon.
5. Which pulse is palpated posterior to the medial malleolus?
A. Dorsalis pedis
B. Posterior tibial
C. Popliteal
D. Femoral
Answer: Posterior tibial
Rationale: The posterior tibial artery passes posterior to the medial malleolus
and is an important distal pulse for lower-extremity vascular assessment.
6. A patient with blunt knee trauma has diminished distal pulses. What
vascular injury should be strongly suspected?
A. Radial artery spasm
B. Popliteal artery injury
C. Carotid artery dissection
D. Subclavian vein thrombosis
Answer: Popliteal artery injury
Rationale: Knee dislocation and severe peri-knee trauma can injure the popliteal
artery. Distal pulses may initially be present despite an evolving intimal injury,
so repeated vascular examinations are essential.
7. Which mechanism carries a high risk of vascular injury despite apparently
minor skin findings?
A. Simple contusion
B. Penetrating trauma near a major vessel
C. Superficial sunburn
D. Isolated muscle soreness
Answer: Penetrating trauma near a major vessel
, Rationale: Penetrating wounds in proximity to major arteries can cause intimal
disruption, thrombosis, transection, pseudoaneurysm, or active hemorrhage
even when the external wound appears small.
8. What does capillary refill primarily provide information about?
A. Bone stability
B. Tendon integrity
C. Peripheral perfusion
D. Joint range of motion
Answer: Peripheral perfusion
Rationale: Capillary refill provides a rapid bedside assessment of peripheral
circulation, although it should be interpreted along with temperature, color,
pulses, and the overall clinical picture.
9. A patient has a severely injured leg with uncontrolled external hemorrhage.
What is the first hemorrhage-control measure?
A. Immediate magnetic resonance imaging
B. Direct pressure when appropriate
C. Delayed surgical consultation
D. Passive observation
Answer: Direct pressure when appropriate
Rationale: Immediate hemorrhage control is a fundamental component of
trauma care. Direct pressure is often the first intervention for significant external
bleeding when it can be safely applied.
10.A tourniquet is most appropriate when:
A. There is only minor venous oozing
B. The patient has a closed fracture without bleeding
C. Severe extremity hemorrhage is not rapidly controlled by other measures
D. The patient has normal distal pulses
ATLS Peripheral Perfusion and Limb
Threat Practice Test Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A Instant Download
___________________________________________________________________
1. A 32-year-old patient arrives after a motorcycle crash with a mangled lower
extremity. The foot is cool, pale, and pulseless. What is the most immediate
priority?
A. Obtain a complete vascular history
B. Restore adequate perfusion while addressing life-threatening injuries
C. Apply a long-leg cast
D. Begin range-of-motion exercises
Answer: Restore adequate perfusion while addressing life-threatening injuries
Rationale: In Advanced Trauma Life Support (ATLS), hemorrhage control,
resuscitation, and recognition of threatened limb ischemia must occur rapidly. A
pulseless, cool extremity after major trauma may represent an arterial injury
requiring urgent intervention.
2. Which finding is most concerning for an acutely threatened extremity?
,A. Mild swelling
B. Small superficial abrasion
C. Absent distal arterial pulse with sensory loss
D. Localized bruising
Answer: Absent distal arterial pulse with sensory loss
Rationale: Acute limb ischemia is classically recognized by findings such as pain,
pallor, pulselessness, paresthesia, paralysis, and poikilothermia. Sensory or
motor deficits indicate an advanced degree of ischemia.
3. A trauma patient has a cold, pale foot with absent dorsalis pedis and
posterior tibial pulses. Which examination should be performed
immediately?
A. Abdominal examination only
B. Complete neurovascular examination of the affected limb and comparison
with the opposite limb
C. Ophthalmologic examination
D. Pulmonary function testing
Answer: Complete neurovascular examination of the affected limb and
comparison with the opposite limb
Rationale: Neurovascular assessment should include pulses, capillary refill, skin
temperature and color, motor function, and sensation. Comparison with the
contralateral extremity helps identify abnormalities.
4. Which pulse is normally assessed on the dorsum of the foot?
A. Femoral pulse
B. Popliteal pulse
C. Posterior tibial pulse
D. Dorsalis pedis pulse
Answer: Dorsalis pedis pulse
,Rationale: The dorsalis pedis artery is palpated on the dorsum of the foot,
usually lateral to the extensor hallucis longus tendon.
5. Which pulse is palpated posterior to the medial malleolus?
A. Dorsalis pedis
B. Posterior tibial
C. Popliteal
D. Femoral
Answer: Posterior tibial
Rationale: The posterior tibial artery passes posterior to the medial malleolus
and is an important distal pulse for lower-extremity vascular assessment.
6. A patient with blunt knee trauma has diminished distal pulses. What
vascular injury should be strongly suspected?
A. Radial artery spasm
B. Popliteal artery injury
C. Carotid artery dissection
D. Subclavian vein thrombosis
Answer: Popliteal artery injury
Rationale: Knee dislocation and severe peri-knee trauma can injure the popliteal
artery. Distal pulses may initially be present despite an evolving intimal injury,
so repeated vascular examinations are essential.
7. Which mechanism carries a high risk of vascular injury despite apparently
minor skin findings?
A. Simple contusion
B. Penetrating trauma near a major vessel
C. Superficial sunburn
D. Isolated muscle soreness
Answer: Penetrating trauma near a major vessel
, Rationale: Penetrating wounds in proximity to major arteries can cause intimal
disruption, thrombosis, transection, pseudoaneurysm, or active hemorrhage
even when the external wound appears small.
8. What does capillary refill primarily provide information about?
A. Bone stability
B. Tendon integrity
C. Peripheral perfusion
D. Joint range of motion
Answer: Peripheral perfusion
Rationale: Capillary refill provides a rapid bedside assessment of peripheral
circulation, although it should be interpreted along with temperature, color,
pulses, and the overall clinical picture.
9. A patient has a severely injured leg with uncontrolled external hemorrhage.
What is the first hemorrhage-control measure?
A. Immediate magnetic resonance imaging
B. Direct pressure when appropriate
C. Delayed surgical consultation
D. Passive observation
Answer: Direct pressure when appropriate
Rationale: Immediate hemorrhage control is a fundamental component of
trauma care. Direct pressure is often the first intervention for significant external
bleeding when it can be safely applied.
10.A tourniquet is most appropriate when:
A. There is only minor venous oozing
B. The patient has a closed fracture without bleeding
C. Severe extremity hemorrhage is not rapidly controlled by other measures
D. The patient has normal distal pulses
