High-Pressure Injection Injury Management

Algorithm Steps

1. ▶

   Start

   High-Pressure Injection Injury

   Industrial injection through skin

   1. ⚠

      Warning

      WARNING: Deceptive Initial Appearance

      Do NOT be fooled by benign presentation

      • Initial wound often appears MINIMAL:
      • - Small puncture wound
      • - Minimal external injury
      • - Patient may minimize symptoms
      • UNDERLYING INJURY IS SEVERE:
      • - Material tracks along tendon sheaths
      • - Spreads through fascial planes
      • - Causes intense inflammation
      • - Leads to compartment syndrome
      • - Vascular compromise
      • THIS IS A SURGICAL EMERGENCY
      1. ●

         Action

         Critical History

         Determine severity factors

         • WHAT was injected? (critical for prognosis)
         • - Grease/oil: Better prognosis
         • - Paint/solvents: WORSE prognosis
         • - Diesel/hydraulic fluid: Toxic
         • INJECTION PRESSURE:
         • - Industrial guns: 2,000-10,000 PSI
         • - Higher pressure = deeper spread
         • TIME since injury
         • LOCATION:
         • - Index finger most common
         • - Non-dominant hand typical
         1. ●

            Action

            Physical Examination

            Assess extent of injury

            • INSPECTION:
            • - Entry wound (often small)
            • - Swelling pattern (tracking)
            • - Skin color changes
            • PALPATION:
            • - Crepitus (subcutaneous material)
            • - Compartment tension
            • VASCULAR:
            • - Capillary refill
            • - Pulse exam
            • - Doppler if needed
            • NEUROLOGIC:
            • - Sensory exam
            • - Motor function
            1. ●

               Action

               Imaging

               Define extent of spread

               • X-RAY:
               • - May show subcutaneous air
               • - May show radiopaque material
               • - Extent of spread
               • MRI (if time permits):
               • - Better soft tissue detail
               • - Usually not needed emergently
               • DO NOT delay surgery for imaging
               1. ◆

                  Decision

                  Time to Surgery

                  Urgent OR within 6 hours

                  • <6 hours: Better outcomes
                  • >6 hours: Higher amputation rate
                  1. ●

                     Action

                     Surgical Management

                     Wide debridement essential

                     • INCISIONS:
                     • - Extensile approach
                     • - Bruner zigzag or midlateral
                     • - Extend to follow material spread
                     • DEBRIDEMENT:
                     • - Remove ALL visible foreign material
                     • - Debride necrotic tissue
                     • - Open tendon sheaths widely
                     • - Release carpal tunnel if needed
                     • - Fasciotomies for compartment syndrome
                     • WOUND:
                     • - Leave wounds OPEN
                     • - Loose packing
                     • - VAC if appropriate
                     • Plan for second-look at 24-48h
                     1. ●

                        Action

                        Postoperative Management

                        Ongoing care

                        • ANTIBIOTICS:
                        • - Broad spectrum (Augmentin + Cipro)
                        • - Cover skin and gram negatives
                        • ELEVATION:
                        • - Hand above heart
                        • REPEAT DEBRIDEMENT:
                        • - Return to OR in 24-48h
                        • - Multiple debridements often needed
                        • - Continue until clean
                        • WOUND CLOSURE:
                        • - Delayed primary closure
                        • - Skin graft if needed
                        • - Flap coverage rare
                        1. ●

                           Action

                           Complications/Outcomes

                           Prognosis

                           • COMPLICATIONS:
                           • - Amputation: 20-50% overall
                           • - Organic solvents: Up to 80% amputation
                           • - Stiffness (very common)
                           • - Chronic pain
                           • - Infection
                           • PROGNOSTIC FACTORS:
                           • - Delay in treatment: POOR
                           • - Organic solvents: POOR
                           • - Grease: Better
                           • - Distal location: Better
                           • - Early surgery: Better
                           1. ✓

                              Outcome

                              Follow-Up

                              Long-term care

                              • Hand therapy essential
                              • Scar management
                              • Return to work variable
                              • May need reconstructive procedures
                              • Workers' compensation often involved