ATLS Renal Trauma Assessment
Certification Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A Instant Download
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1. A 28-year-old patient is brought to the emergency department after a high-
speed motor vehicle collision. He has left flank tenderness and microscopic
hematuria. What is the primary priority in the initial assessment?
A. Determine the exact grade of renal injury
B. Obtain a renal ultrasound immediately
C. Perform the primary survey and assess hemodynamic stability
D. Schedule delayed renal scintigraphy
Answer: C. Perform the primary survey and assess hemodynamic stability
Rationale: In ATLS, the initial priority in trauma is the primary survey with rapid
identification and treatment of life-threatening problems. The severity of renal
injury is secondary to stabilization of airway, breathing, circulation, disability,
and exposure.
2. Which mechanism is most strongly associated with blunt renal trauma?
A. Low-energy fall from standing
B. High-speed motor vehicle collision
,C. Minor penetrating skin injury
D. Isolated hand injury
Answer: B. High-speed motor vehicle collision
Rationale: High-energy deceleration and blunt mechanisms can produce renal
contusion, laceration, vascular injury, or renal pedicle disruption.
3. Which finding should raise suspicion for renal trauma after blunt abdominal
injury?
A. Flank ecchymosis
B. Isolated wrist pain
C. Bilateral ear bruising
D. Mild pharyngitis
Answer: A. Flank ecchymosis
Rationale: Flank ecchymosis, flank tenderness, hematuria, and abdominal or
lower rib injuries can indicate renal trauma.
4. A patient with suspected renal trauma is hypotensive despite initial fluid
resuscitation. Which principle should guide management?
A. Hematuria must be completely characterized before treatment
B. Hemodynamic instability takes priority over defining the renal injury
C. Renal ultrasound must always precede resuscitation
D. CT should be performed before hemorrhage control
Answer: B. Hemodynamic instability takes priority over defining the renal injury
Rationale: In ATLS, unstable trauma patients require immediate resuscitation
and hemorrhage control. Diagnostic evaluation must not delay treatment of life-
threatening bleeding.
5. Which organ is most commonly injured in blunt abdominal trauma?
A. Kidney
B. Pancreas
,C. Liver
D. Adrenal gland
Answer: C. Liver
Rationale: The liver is the most commonly injured solid intra-abdominal organ in
blunt abdominal trauma, although renal trauma is also important, particularly
after high-energy mechanisms.
6. Which urinary finding is classically associated with renal trauma?
A. Hematuria
B. Glycosuria
C. Ketonuria
D. Protein-free urine
Answer: A. Hematuria
Rationale: Hematuria is a common finding in renal trauma, although its absence
does not reliably exclude a significant renal vascular or collecting-system injury.
7. Which statement about hematuria in renal trauma is most accurate?
A. Gross hematuria always indicates renal pedicle disruption
B. Microscopic hematuria always represents a minor injury
C. The degree of hematuria does not always correlate with injury severity
D. Absence of hematuria excludes renal trauma
Answer: C. The degree of hematuria does not always correlate with injury
severity
Rationale: Severe renal vascular injuries may occur with little or no hematuria,
while substantial hematuria may occur with less severe parenchymal injuries.
8. A hemodynamically stable patient has significant blunt abdominal trauma and
suspected renal injury. Which imaging study is generally preferred?
A. Noncontrast head CT
B. Contrast-enhanced CT of the abdomen and pelvis
, C. Plain abdominal radiograph alone
D. Cystoscopy alone
Answer: B. Contrast-enhanced CT of the abdomen and pelvis
Rationale: Contrast-enhanced CT is the principal diagnostic imaging modality for
evaluating significant renal trauma in hemodynamically stable patients.
9. Which CT finding most strongly suggests urinary collecting-system injury?
A. Perirenal contrast extravasation on delayed images
B. Isolated splenic enlargement
C. Gastric distention
D. Gallbladder sludge
Answer: A. Perirenal contrast extravasation on delayed images
Rationale: Contrast extravasation from the collecting system into the perirenal
tissues indicates urinary leakage and may require additional management
depending on the clinical situation.
10. What is the primary purpose of delayed CT imaging in selected renal trauma
patients?
A. Assess bowel motility
B. Evaluate urinary extravasation and collecting-system integrity
C. Diagnose intracranial hemorrhage
D. Measure cardiac output
Answer: B. Evaluate urinary extravasation and collecting-system integrity
Rationale: Delayed excretory-phase imaging can demonstrate contrast leakage
from the collecting system and help define urinary tract injuries.
11. Which renal injury represents a renal contusion?
A. Renal parenchymal bruising without a laceration
B. Complete renal pedicle avulsion
C. Complete renal fragmentation
D. Ureteral transection
Certification Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A Instant Download
1. A 28-year-old patient is brought to the emergency department after a high-
speed motor vehicle collision. He has left flank tenderness and microscopic
hematuria. What is the primary priority in the initial assessment?
A. Determine the exact grade of renal injury
B. Obtain a renal ultrasound immediately
C. Perform the primary survey and assess hemodynamic stability
D. Schedule delayed renal scintigraphy
Answer: C. Perform the primary survey and assess hemodynamic stability
Rationale: In ATLS, the initial priority in trauma is the primary survey with rapid
identification and treatment of life-threatening problems. The severity of renal
injury is secondary to stabilization of airway, breathing, circulation, disability,
and exposure.
2. Which mechanism is most strongly associated with blunt renal trauma?
A. Low-energy fall from standing
B. High-speed motor vehicle collision
,C. Minor penetrating skin injury
D. Isolated hand injury
Answer: B. High-speed motor vehicle collision
Rationale: High-energy deceleration and blunt mechanisms can produce renal
contusion, laceration, vascular injury, or renal pedicle disruption.
3. Which finding should raise suspicion for renal trauma after blunt abdominal
injury?
A. Flank ecchymosis
B. Isolated wrist pain
C. Bilateral ear bruising
D. Mild pharyngitis
Answer: A. Flank ecchymosis
Rationale: Flank ecchymosis, flank tenderness, hematuria, and abdominal or
lower rib injuries can indicate renal trauma.
4. A patient with suspected renal trauma is hypotensive despite initial fluid
resuscitation. Which principle should guide management?
A. Hematuria must be completely characterized before treatment
B. Hemodynamic instability takes priority over defining the renal injury
C. Renal ultrasound must always precede resuscitation
D. CT should be performed before hemorrhage control
Answer: B. Hemodynamic instability takes priority over defining the renal injury
Rationale: In ATLS, unstable trauma patients require immediate resuscitation
and hemorrhage control. Diagnostic evaluation must not delay treatment of life-
threatening bleeding.
5. Which organ is most commonly injured in blunt abdominal trauma?
A. Kidney
B. Pancreas
,C. Liver
D. Adrenal gland
Answer: C. Liver
Rationale: The liver is the most commonly injured solid intra-abdominal organ in
blunt abdominal trauma, although renal trauma is also important, particularly
after high-energy mechanisms.
6. Which urinary finding is classically associated with renal trauma?
A. Hematuria
B. Glycosuria
C. Ketonuria
D. Protein-free urine
Answer: A. Hematuria
Rationale: Hematuria is a common finding in renal trauma, although its absence
does not reliably exclude a significant renal vascular or collecting-system injury.
7. Which statement about hematuria in renal trauma is most accurate?
A. Gross hematuria always indicates renal pedicle disruption
B. Microscopic hematuria always represents a minor injury
C. The degree of hematuria does not always correlate with injury severity
D. Absence of hematuria excludes renal trauma
Answer: C. The degree of hematuria does not always correlate with injury
severity
Rationale: Severe renal vascular injuries may occur with little or no hematuria,
while substantial hematuria may occur with less severe parenchymal injuries.
8. A hemodynamically stable patient has significant blunt abdominal trauma and
suspected renal injury. Which imaging study is generally preferred?
A. Noncontrast head CT
B. Contrast-enhanced CT of the abdomen and pelvis
, C. Plain abdominal radiograph alone
D. Cystoscopy alone
Answer: B. Contrast-enhanced CT of the abdomen and pelvis
Rationale: Contrast-enhanced CT is the principal diagnostic imaging modality for
evaluating significant renal trauma in hemodynamically stable patients.
9. Which CT finding most strongly suggests urinary collecting-system injury?
A. Perirenal contrast extravasation on delayed images
B. Isolated splenic enlargement
C. Gastric distention
D. Gallbladder sludge
Answer: A. Perirenal contrast extravasation on delayed images
Rationale: Contrast extravasation from the collecting system into the perirenal
tissues indicates urinary leakage and may require additional management
depending on the clinical situation.
10. What is the primary purpose of delayed CT imaging in selected renal trauma
patients?
A. Assess bowel motility
B. Evaluate urinary extravasation and collecting-system integrity
C. Diagnose intracranial hemorrhage
D. Measure cardiac output
Answer: B. Evaluate urinary extravasation and collecting-system integrity
Rationale: Delayed excretory-phase imaging can demonstrate contrast leakage
from the collecting system and help define urinary tract injuries.
11. Which renal injury represents a renal contusion?
A. Renal parenchymal bruising without a laceration
B. Complete renal pedicle avulsion
C. Complete renal fragmentation
D. Ureteral transection
