All EMS presentations
TraumaClinical presentation

Abdominal trauma

A streamlined, differential-led presentation for rapid clinical review.

Clinical snapshot

Twenty-second review

  • Blunt or penetrating abdominal trauma can injure solid organs, hollow viscera, vessels, retroperitoneal structures, or diaphragm while concealing major hemorrhage.
  • Shock, peritonism, distension, seatbelt sign, penetrating wound, referred shoulder pain, or anticoagulation is high risk.
  • Keep pelvic, thoracic, or spinal injury in the differential; overlapping or concurrent illness remains possible.
  • For abdominal trauma, trends and combinations of findings are more informative than one isolated vital sign.
Differentials

Compare the clinical patterns

The repeated material is grouped inside each possibility. Open only the condition you need.

Serious2 conditions
Solid-organ hemorrhageTime-sensitive high-risk possibility

HPI

Clarify mechanism and timing; pain, tenderness or distension; seatbelt or penetrating injury.

Signs & symptoms

Shock, worsening pain, peritonism, distension, or high-energy mechanism.

Focused exam

Expose only as needed, inspect and palpate systematically, and document distal circulation, sensation, and movement; Reassess pain, swelling, perfusion, and neurologic status after movement or intervention.

Brief pathophysiology

Solid-organ hemorrhage may cause abdominal trauma through a time-sensitive process capable of rapid physiological deterioration.

Vital-sign pattern

What the trend may show

Possible pattern

Hemorrhage is a trend diagnosis: tachycardia and narrowing pulse pressure may precede hypotension. Age, pregnancy, medications, and pacing can blunt expected responses.

Heart rate (bpm)

Often rises

Tachycardia is a common compensatory response but may be absent.

Pulse pressure (mmHg)

May narrow

Narrowing pulse pressure can reflect reduced stroke volume.

Blood pressure (mmHg)

May fall late

A normal pressure does not exclude significant compensated hemorrhage.

MAP (mmHg)

May fall

A falling trend supports worsening perfusion; interpret with mental status and skin signs.

Front-load in the triage report

  • Solid-organ hemorrhage: Shock, worsening pain, peritonism, distension, or high-energy mechanism.
  • Mechanism and timing?
  • Pain, tenderness or distension?
Hollow-viscus injuryTime-sensitive high-risk possibility

HPI

Clarify pain, tenderness or distension; seatbelt or penetrating injury; hemodynamic trend.

Signs & symptoms

Shock, worsening pain, peritonism, distension, or high-energy mechanism.

Focused exam

Reassess pain, swelling, perfusion, and neurologic status after movement or intervention; Inspect and palpate gently for tenderness, guarding, distension, wounds, bruising, pelvis findings, and referred chest or flank signs.

Brief pathophysiology

Hollow-viscus injury may cause abdominal trauma through a time-sensitive process capable of rapid physiological deterioration.

Vital-sign pattern

What the trend may show

Possible pattern

Isolated injury may have normal observations. Serial heart rate, pressure, respiratory status, and oxygenation help identify occult hemorrhage or thoracic injury.

Heart rate (bpm)

May rise

Pain, distress, and hemorrhage can increase rate; medications can blunt it.

Blood pressure (mmHg)

May fall late

A normal pressure does not exclude compensated hemorrhage.

Respiratory rate (breaths/min)

Trend rate / effort

Tachypnea may reflect pain, thoracic injury, shock, or acidosis.

Oxygen saturation (SpO₂)

Usually preserved

Low saturation suggests thoracic injury, hypoventilation, or concurrent disease.

Front-load in the triage report

  • Hollow-viscus injury: Shock, worsening pain, peritonism, distension, or high-energy mechanism.
  • Pain, tenderness or distension?
  • Seatbelt or penetrating injury?
Common1 condition
Abdominal wall injuryCommon presentation pattern

HPI

Clarify mechanism and timing; pain, tenderness or distension; seatbelt or penetrating injury.

Signs & symptoms

Local tenderness and bruising may occur without organ injury.

Focused exam

Expose only as needed, inspect and palpate systematically, and document distal circulation, sensation, and movement; Reassess pain, swelling, perfusion, and neurologic status after movement or intervention.

Brief pathophysiology

Abdominal wall injury may explain the presenting symptoms through a common clinical mechanism, while serial assessment checks for complications or an alternate cause.

Vital-sign pattern

What the trend may show

Possible pattern

Isolated injury may have normal observations. Serial heart rate, pressure, respiratory status, and oxygenation help identify occult hemorrhage or thoracic injury.

Heart rate (bpm)

May rise

Pain, distress, and hemorrhage can increase rate; medications can blunt it.

Blood pressure (mmHg)

May fall late

A normal pressure does not exclude compensated hemorrhage.

Respiratory rate (breaths/min)

Trend rate / effort

Tachypnea may reflect pain, thoracic injury, shock, or acidosis.

Oxygen saturation (SpO₂)

Usually preserved

Low saturation suggests thoracic injury, hypoventilation, or concurrent disease.

Front-load in the triage report

  • Local tenderness and bruising may occur without organ injury.
  • Mechanism and timing?
  • Pain, tenderness or distension?
Mimics3 conditions
PelvicImportant alternative presentation

HPI

Clarify mechanism and timing; pain, tenderness or distension; seatbelt or penetrating injury.

Signs & symptoms

Adjacent injury may refer pain or drive instability.

Focused exam

Expose only as needed, inspect and palpate systematically, and document distal circulation, sensation, and movement; Reassess pain, swelling, perfusion, and neurologic status after movement or intervention.

Brief pathophysiology

Pelvic can resemble abdominal trauma through overlapping symptoms or referred physiology despite a different primary mechanism.

Vital-sign pattern

What the trend may show

Possible pattern

Isolated injury may have normal observations. Serial heart rate, pressure, respiratory status, and oxygenation help identify occult hemorrhage or thoracic injury.

Heart rate (bpm)

May rise

Pain, distress, and hemorrhage can increase rate; medications can blunt it.

Blood pressure (mmHg)

May fall late

A normal pressure does not exclude compensated hemorrhage.

Respiratory rate (breaths/min)

Trend rate / effort

Tachypnea may reflect pain, thoracic injury, shock, or acidosis.

Oxygen saturation (SpO₂)

Usually preserved

Low saturation suggests thoracic injury, hypoventilation, or concurrent disease.

Front-load in the triage report

  • Adjacent injury may refer pain or drive instability.
  • Mechanism and timing?
  • Pain, tenderness or distension?
ThoracicImportant alternative presentation

HPI

Clarify pain, tenderness or distension; seatbelt or penetrating injury; hemodynamic trend.

Signs & symptoms

Adjacent injury may refer pain or drive instability.

Focused exam

Reassess pain, swelling, perfusion, and neurologic status after movement or intervention; Inspect and palpate gently for tenderness, guarding, distension, wounds, bruising, pelvis findings, and referred chest or flank signs.

Brief pathophysiology

Thoracic can resemble abdominal trauma through overlapping symptoms or referred physiology despite a different primary mechanism.

Vital-sign pattern

What the trend may show

Possible pattern

Isolated injury may have normal observations. Serial heart rate, pressure, respiratory status, and oxygenation help identify occult hemorrhage or thoracic injury.

Heart rate (bpm)

May rise

Pain, distress, and hemorrhage can increase rate; medications can blunt it.

Blood pressure (mmHg)

May fall late

A normal pressure does not exclude compensated hemorrhage.

Respiratory rate (breaths/min)

Trend rate / effort

Tachypnea may reflect pain, thoracic injury, shock, or acidosis.

Oxygen saturation (SpO₂)

Usually preserved

Low saturation suggests thoracic injury, hypoventilation, or concurrent disease.

Front-load in the triage report

  • Adjacent injury may refer pain or drive instability.
  • Pain, tenderness or distension?
  • Seatbelt or penetrating injury?
Spinal injuryImportant alternative presentation

HPI

Clarify seatbelt or penetrating injury; hemodynamic trend; anticoagulants.

Signs & symptoms

Adjacent injury may refer pain or drive instability.

Focused exam

Reassess pain, swelling, perfusion, and neurologic status after movement or intervention; Inspect and palpate gently for tenderness, guarding, distension, wounds, bruising, pelvis findings, and referred chest or flank signs.

Brief pathophysiology

Spinal injury can resemble abdominal trauma through overlapping symptoms or referred physiology despite a different primary mechanism.

Vital-sign pattern

What the trend may show

Possible pattern

Isolated injury may have normal observations. Serial heart rate, pressure, respiratory status, and oxygenation help identify occult hemorrhage or thoracic injury.

Heart rate (bpm)

May rise

Pain, distress, and hemorrhage can increase rate; medications can blunt it.

Blood pressure (mmHg)

May fall late

A normal pressure does not exclude compensated hemorrhage.

Respiratory rate (breaths/min)

Trend rate / effort

Tachypnea may reflect pain, thoracic injury, shock, or acidosis.

Oxygen saturation (SpO₂)

Usually preserved

Low saturation suggests thoracic injury, hypoventilation, or concurrent disease.

Front-load in the triage report

  • Adjacent injury may refer pain or drive instability.
  • Seatbelt or penetrating injury?
  • Hemodynamic trend?
Red flags

Findings that should escalate concern

  • Shock
  • Rigid abdomen
  • Evisceration
  • Pregnancy
  • Shock, peritonism, distension, seatbelt sign, penetrating wound, referred shoulder pain, or anticoagulation is high risk.
  • Solid-organ hemorrhage or hollow-viscus injury: Shock, worsening pain, peritonism, distension, or high-energy mechanism.
Related medications

Medication recognition

ApixabanRivaroxabanClopidogrelWarfarin
Related EMS presentations

Continue the clinical pathway

TraumaMotor vehicle collisionTraumaHip / pelvic injuryGeneral MedicalHypotension / shockTraumaAssault / penetrating traumaTraumaChest trauma
References

Clinical and academic sources

Curated clinical guidance and peer-reviewed evidence supporting this presentation. Current BCEHS guidance, medical direction, and local policy remain authoritative for practice.

BCEHS Handbook — specific CPGs

  1. H07: Abdominal TraumaBC Emergency Health Services Handbook

    Official BCEHS clinical practice guidance for abdominal trauma.

Supporting clinical and academic evidence

  1. CEDIS Presenting Complaint List updateCanadian Association of Emergency Physicians

    Presenting-complaint terminology and categorization context. It does not establish a prehospital “top 100” ranking.

  2. Major trauma: assessment and initial managementNational Institute for Health and Care Excellence

    Evidence-based initial assessment, hemorrhage control, imaging, and trauma-system guidance.

  3. Focused Assessment with Sonography for Trauma (FAST)Journal of Medical Ultrasound · 2023

    Occult intra-abdominal bleeding, serial physiology, and diagnostic context after abdominal trauma.