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Published on : Jul 20, 2021 | Views : 1851 | Downloads : 9

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Slide 1-

Evaluation and Treatment of Vascular Injury Jason A. Lowe, MD September 2014 Prior versions Timothy McHenry, MD; March 2004 Heather Vallier, MD; January 2006
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Goals Identify vascular injuries Confidently and accurately evaluate vascular injury Coordinate treatment
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A Rare Injury 1-3% of all extremity trauma Occurs more with penetrating trauma GSW 46% Blunt 19% Stabbing 12% Hafez et al J Vas Surg 2001
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Pathology of Injury Spasm Intimal flap External compression Compartment syndrome Hematoma Thrombus Laceration/transsection External projectiles Bone fragments
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Successful diagnosis and management of extremity vascular injuries requires: *Thorough history and physical *High index of suspicion *Rapid administration of care
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Mechanism of injury heightens the surgeon’s awareness of potential vascular insult Considerations: *Fracture Personality *Presence of dislocation *Blunt trauma vs penetrating trauma
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High Risk Fractures Open fractures Segmental diaphyseal fractures Floating limbs Associated crush injuries
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Fracture Specific Vascular Injuries Clavicle Supracondylar humerus Pelvic ring Distal femur Tibia plateau Tibia shaft Subclavian Brachial Gluteal, Iliac, Obturator Popliteal Popliteal tibial
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Dislocations Associated with Vascular Injury Scapulothoracic dissociation 64-100% Knee dislocation 16% Flanagin et al OCNA 2013, Miranda et al JTrauma 2002
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Blunt Trauma Stretching or shearing of vessels Intimal damage/dissection, thrombus Subtle clinical findings 27% amputation rate
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Penetrating Injury Direct injury to vessel: Laceration/transsection Exam findings: May not always be obvious Delayed pseudo-aneursym and AVF 9% amputation rate
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Physical Exam Hard Signs Pulsatile bleeding Expanding hematoma Thrill at injury site Pulseless limb Soft Signs Asymmetric limb temperature Asymmetric pulses Injury to anatomically-related nerve History of bleeding immediately after injury Hafez et al J Vas Surg 2001
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Important Vascular injuries are dynamic injuries! Repeat examinations
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Emergency Department Management Control Bleeding Compressive dressing Judicious tourniquet Fluid resuscitation Reduce & splint fractures Re-evaluate
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Ankle Brachial Index Indications Asymmetric pulses Soft exam findings High energy tibia plateau fractures All knee dislocations Vascular consult and advanced imaging for ABI <0.9 ABI does not define extent or level of injury Lynch et al Ann Surg 1991, Mills et al JOT 2004
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Ankle Brachial Index Benefits Cheap Easy Negative predictive value between 96% and 100% Limited diagnosis Venous injuries False positive with arterial spasm Injuries can preclude cuff placement Lynch et al Ann Surg, Mills et al Injury 2004
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Duplex Scan Technician dependent Time intensive Steep learning curve Limited indication in acute trauma patients
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Angiography Historical Gold Standard Localizes the lesion Defines type and extent of lesion Active hemorrhage vs occlusion Allows treatment planning embolization vs bypass
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Angiography Disadvantages Patient risks Renal insult Anaphylaxis Iatrogenic vessel injury Expensive Difficult to resuscitate patients Delays operative intervention
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Multi-Detector CT Angiography (MDCTA) Replacing angiography as standard of care 95% sensitivity and 87% specificity Decreased contrast load Fast Effective costwise Reiger et al AJR 2006, Peng et al Am Surg 2008, Wallin Et al Ann Vasc Surg 2011
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MDCTA Disadvantages Cannot exclude all arterial dissections -May still require angiography Limited resolution in presence of -Foreign bodies -Vascular calcifications
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Surgical Exploration Indications: Frank vascular injury Vascular injury not amenable to endovascular repair Expanding/pulsatile hematoma Thrill at injury site Pulseless limb
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Evaluation Algorithm
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Sequence of Surgical Treatment Who goes first? Vascular or Orthopaedics
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Who Goes First? Meta-analysis shows sequence of fixation (vascular vs orthopaedic) does not affect amputation rate Traction upon vascular repair is not shown to lead to vascular compromise Fowler et al Injury 2009
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Treatment Have a protocol in place Consider each patient individually Restore blood flow Debride devitalized tissue Stabilize fractures
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Indications for Fasciotomy Diagnosis of acute compartment syndrome Arterial injury requiring repair Combined arterial venous injury Warm ischemia > 6hr Cold ischemia > 12hr Faber et al Injury 2012
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Prognostic Factors Soft tissue injury (crush) Level of vascular injury Collateral circulation Ischemia time Patient factors
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Complications of Vascular Injury Blood Loss Compartment syndrome Tissue necrosis Infection Amputation Death
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Case Example 30 yr old presents with elbow dislocation and report of bleeding at the scene Arterial bleeding is observed in ED Vascular is consulted Patient to OR within 3 hours of injury
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Direct arterial repair of brachial artery
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Ligament repair of elbow
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Case Example 29 yr old MVC with bilateral open lower extremity injuries Cold feet bilateral mangled RLE No pulses
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ppt slide no 34 content not found
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No pulse with traction Foot perfusion improves CT angiogram ordered/vascular consult Normal LLE Patient taken to OR for I&D ex-fix left and guillotine amputation right Pulse returns LLE Q2 hour vascular checks
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12 hours post op patient loses pulse Taken to OR emergently by vascular for on-table angio and endovascular bypass of intimal flap Infection develops HD #4, sepsis, and AKA is performed
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Vascular Injuries: Summary Maintain high index of suspicion *Recognize common injury patterns *Thorough, repeated examination Rapid recognition and treatment is paramount Have a protocol for evaluation and treatment
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References Berg RJ, Okoye O, Inaba K, Konstantinidis A, Branco B, Meisel E, Barmparas G, Demetriades D. Extremity Firearm Trauma: The impact of injury parttern on clinical outcomes. The American Surgeon. 12;2012:1383-11387. Doddy O, Given MF, Lyon SM. Extremities-Indications and techniques for treatment of extremity vascular injuries. Injury 2008;39:1295-1303 Farber A, Tan TW, Hamburg NM, Kalish JA, Joglar F, Onigman T, Rybin D, Doros G, Eberhardt RT. Early fasciotomy in patients with extremity vascular injury is associated with decreased risk of adverse limb outcomes: A review of the National Trauma Data Bank. Injury 2012;43:1486-1491 Fowler J, Macintyre N, Rehman S, Gaughan JP, Leslie S. The importance of surgical sequence in the treatment of lower extrmeity injuries with concomitant vascular injury: A meta-analysis. Injury 2009;40:72-76 Hafez HM, woolgar J, Robbs JV. Lower extremity arterial injury: Results of 550 cases and review of risk factors associate with limb loss. J Vas Surg 2001; 33:1212-9. Halvorson JJ, Anz A, Langfitt M, Deonanan JK, Scott A, Teasdall RD, Carroll EA. Vascular injury associated with extremity traum: Initial Diagnosis and management. JAAOS 2011;19:495-504 Flanagin BA, Leslie MP Scapulothoracic Dissociation. OCNA 2013;44:1-7 Lynch K, Johansen K, Can Doppler pressure measurement replace “exclusion” arteriography in the diagnosis of occult extremity arterial trauma? Ann Surg 1991;214:737-41 Mills WJ, Barei DP. The value of the ankle-brachial index for diagnosing arterial injury after knee dislocation: a prospective study. Journal of Trauma 2004;56:1261. Miranda FE, Dennis JW, Veldenz HC, Dovgan PS, Frykberg ER: Confirmation of the safety and accuracy of physical examination in the evaluation of knee dislocation for injury of the popliteal artery: a prospective study. J Trauma 2002;52:247-252. Peng PD, Spain DA, Tataria M, Hellinger JC, Rubin GD, Brundage SI. CT angiography effectively evaluates extremity vascular trauma. The American Surgeon 2008;74:103-107 Reigerm, Mallouhi A et al. Traumatic arterial injuries of the extremities: initial evaluation with MDCT angiography. AJR 2006;186:656-64. Wallin D, Yaghoubian A, Rosing D, Walot I, Chauvapun J, Virgilio C Colifornia T. Computed Tomographic angiography as the primary diagnostic modality in penetrating lower extremity vascular injuries: a Level I trauma experience. Annals of Vascular Surgery 2011;25:620-623
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For questions or comments, please send to ota@ota.org