Download Free Medical Evaluation and Treatment of Vascular Injury PowerPoint Presentation

Evaluation and Treatment of Vascular Injury PowerPoint Presentation

DOWNLOAD MEDICAL POWERPOINT PRESENTATION

About This Presentation

Description : Check out this medical presentation on Vascular Surgery, which is titled "Evaluation and Treatment of Vascular Injury", to know about the evaluation and treatment of vascular injury.

Tags : Vascular Surgery, Evaluation, Treatment, Vascular Injury

Published on : Jul 20, 2021 | Views : 2154 | Downloads : 9

Shareable Url :

Embed Code :

Comment

Transcript

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
Slide 2-

Goals Identify vascular injuries Confidently and accurately evaluate vascular injury Coordinate treatment
Slide 3-

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
Slide 4-

Pathology of Injury Spasm Intimal flap External compression Compartment syndrome Hematoma Thrombus Laceration/transsection External projectiles Bone fragments
Slide 5-

Successful diagnosis and management of extremity vascular injuries requires: *Thorough history and physical *High index of suspicion *Rapid administration of care
Slide 6-

Mechanism of injury heightens the surgeon’s awareness of potential vascular insult Considerations: *Fracture Personality *Presence of dislocation *Blunt trauma vs penetrating trauma
Slide 7-

High Risk Fractures Open fractures Segmental diaphyseal fractures Floating limbs Associated crush injuries
Slide 8-

Fracture Specific Vascular Injuries Clavicle Supracondylar humerus Pelvic ring Distal femur Tibia plateau Tibia shaft Subclavian Brachial Gluteal, Iliac, Obturator Popliteal Popliteal tibial
Slide 9-

Dislocations Associated with Vascular Injury Scapulothoracic dissociation 64-100% Knee dislocation 16% Flanagin et al OCNA 2013, Miranda et al JTrauma 2002
Slide 10-

Blunt Trauma Stretching or shearing of vessels Intimal damage/dissection, thrombus Subtle clinical findings 27% amputation rate
Slide 11-

Penetrating Injury Direct injury to vessel: Laceration/transsection Exam findings: May not always be obvious Delayed pseudo-aneursym and AVF 9% amputation rate
Slide 12-

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
Slide 13-

Important Vascular injuries are dynamic injuries! Repeat examinations
Slide 14-

Emergency Department Management Control Bleeding Compressive dressing Judicious tourniquet Fluid resuscitation Reduce & splint fractures Re-evaluate
Slide 15-

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
Slide 16-

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
Slide 17-

Duplex Scan Technician dependent Time intensive Steep learning curve Limited indication in acute trauma patients
Slide 18-

Angiography Historical Gold Standard Localizes the lesion Defines type and extent of lesion Active hemorrhage vs occlusion Allows treatment planning embolization vs bypass
Slide 19-

Angiography Disadvantages Patient risks Renal insult Anaphylaxis Iatrogenic vessel injury Expensive Difficult to resuscitate patients Delays operative intervention
Slide 20-

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
Slide 21-

MDCTA Disadvantages Cannot exclude all arterial dissections -May still require angiography Limited resolution in presence of -Foreign bodies -Vascular calcifications
Slide 22-

Surgical Exploration Indications: Frank vascular injury Vascular injury not amenable to endovascular repair Expanding/pulsatile hematoma Thrill at injury site Pulseless limb
Slide 23-

Evaluation Algorithm
Slide 24-

Sequence of Surgical Treatment Who goes first? Vascular or Orthopaedics
Slide 25-

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
Slide 26-

Treatment Have a protocol in place Consider each patient individually Restore blood flow Debride devitalized tissue Stabilize fractures
Slide 27-

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
Slide 28-

Prognostic Factors Soft tissue injury (crush) Level of vascular injury Collateral circulation Ischemia time Patient factors
Slide 29-

Complications of Vascular Injury Blood Loss Compartment syndrome Tissue necrosis Infection Amputation Death
Slide 30-

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
Slide 31-

Direct arterial repair of brachial artery
Slide 32-

Ligament repair of elbow
Slide 33-

Case Example 29 yr old MVC with bilateral open lower extremity injuries Cold feet bilateral mangled RLE No pulses
Slide 34-

ppt slide no 34 content not found
Slide 35-

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
Slide 36-

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
Slide 37-

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
Slide 38-

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
Slide 39-

For questions or comments, please send to ota@ota.org