Synopsis
Detect evolving post-revascularisation compartment syndrome and secure immediate complete fasciotomy before muscle, nerve and kidney injury becomes irreversible.
- Suspect the trajectory: worsening pain, passive-stretch pain, tense swelling, analgesic escalation and neurological change after revascularisation matter more than one earlier normal examination.
- Palpable distal pulses do not exclude compartment syndrome because capillary perfusion fails before flow in the larger arteries necessarily disappears.
- When the clinical diagnosis is clear, immediate open decompression follows; do not delay fasciotomy to obtain compartment pressures, imaging or a creatine kinase result.
Key red flags
Increasing pain, passive-stretch pain and rising analgesic requirement after flow restoration require immediate repeat examination and senior surgical review.
New paraesthesia, sensory loss or weakness indicates nerve ischaemia and a shortening opportunity for functional limb salvage.
Paralysis, anaesthesia, muscle rigor, hyperkalaemia, acidosis or dark urine indicates advanced tissue injury and systemic reperfusion danger.
Increasing pain, passive-stretch pain and rising analgesic need in the reperfused limb are early warnings requiring immediate senior reassessment.
New tingling, reduced sensation or weakness in nerves crossing a swollen compartment shows declining tissue perfusion and accelerates surgery.
A firm expanding calf after embolectomy, bypass or thrombolysis may represent reperfusion oedema or bleeding within a closed compartment.
Restored pedal pulses confirm large-vessel flow but do not measure intramuscular capillary perfusion and cannot exclude compartment syndrome.
Sedation, delirium, neuropathy or regional block removes early symptoms and requires agreed serial assessment or pressure monitoring responsibility.
Anaesthesia, paralysis, dark urine, acidosis and hyperkalaemia imply advanced muscle necrosis requiring simultaneous renal and critical-care management.
Investigation priorities
Recognise change while decompression can still preserve muscle and nerve function.
Management branches
Four hours after femoral embolectomy, a patient has returned pedal pulses but worsening calf pain and new first-web-space tingling.
- Inputs: compare timed pain scores, opioid doses, passive-stretch pain, compartment tension, named nerve function, pulses, Doppler signals and systemic blood pressure.
- Reasoning: preserved pulses show macrovascular patency but worsening pain and deep fibular sensory change after reperfusion indicate evolving compartment syndrome.