03 / Vascular Surgery · open
Femoral embolectomy
The six-hour operation: open the femoral artery, trawl the clot out with a balloon catheter, and give the leg its blood back before the muscle gives up.
Indication: Acute embolic limb ischaemia; the classically cold, pale, pulseless leg with a source in the heart.
On the tray for this operation
Test yourself on the tray
Scalpel
Sharp division of tissue, most visibly the skin incision.
Metzenbaum scissors
Fine dissection of delicate tissue and planes.
DeBakey forceps
Atraumatic handling of vessels, bowel, and delicate tissue.
Kelly clamp
General-purpose clamping of vessels and tissue pedicles.
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Mosquito clamp
Clamping small bleeders and fine structures.
Needle driver
Holding the curved needle while suturing.
Stage
1 / 4
Exposing the femoral bifurcation
Vertical groin incision; common, superficial and profunda femoris arteries are exposed and slung.
Watch for: Injury to femoral vein or nerve
Why are we operating?
Femoral embolectomy retrieves the clot that stopped a limb: through a groin exposure and a small arteriotomy, a balloon catheter is passed beyond the embolus and withdrawn inflated, towing the occlusion out. It is the operation of the embolic leg, previously normal vessels, a cardiac source, a clock measured in hours, and it can be done under local anaesthesia in the frail patients who most often need it.
Pulls toward surgery
Gives the team pause
Shared foundations
What the surgeon is thinking
Exposing the femoral bifurcation
Why is the common femoral artery the operation's crossroads?
It is the highway junction the balloon can work from in both directions: proximally toward the iliacs and distally down profunda and superficial femoral. Control of all three branches with slings before any arteriotomy is the vascular grammar: never open a vessel you do not already control.
Arteriotomy and catheter passes
How does a balloon catheter actually clear a clot it cannot see?
By feel and sequence: passed deflated beyond the clot, inflated to gentle wall contact, withdrawn towing the embolus ahead of it, repeated until passes come back clean and backbleeding returns. Overinflation dissects intima, which is why the operator's fingers, not the syringe's capacity, set the pressure.
Closure and reperfusion
What must be true before the groin closes?
Inflow thunders, backflow answers, and the foot declares: good proximal jet, decent back-bleeding, a palpable or Doppler-audible foot signal, and where doubt persists, on-table angiography, because a groin closed over residual distal clot is a re-do by morning. Reperfusion's chemistry (potassium, myoglobin) starts now and the anaesthetist is warned before the clamps open.
The fasciotomy question
Why is fasciotomy discussed in the same operation?
Because reperfused muscle swells inside fascial boxes that do not stretch: after long ischaemic intervals, prophylactic fasciotomy at the same sitting beats the overnight disaster diagnosed through opioid-resistant pain. The decision weighs ischaemic time, muscle turgor and the practicalities of overnight surveillance.
Decision points
Balloon passes keep returning clot and the backbleeding stays poor.
On-table angiography and adjuncts
Define the residual problem: distal clot may respond to catheter-directed lysis or further passes under imaging.
Bypass the segment
When the 'embolus' was thrombosis on disease: the operation converts to revascularisation proper, inflow-outflow-conduit thinking in real time.
A failed embolectomy is usually a wrong diagnosis: thrombosis on chronic disease does not tow out like an embolus. The operation's exit routes (imaging, lysis, bypass) are part of its plan, not improvisations.
Six hours ischaemic, calf already firm before reperfusion. Fasciotomy now or watch?
Prophylactic four-compartment fasciotomy
Long ischaemia plus firm compartments is the textbook indication: the incisions heal, the missed compartment syndrome does not.
Close and observe hourly
Defensible only with soft compartments, short ischaemia and genuine hourly examination by people empowered to act.
The question is asked in theatre because the answer is cheapest there: 'possibly unnecessary fasciotomy' is a scar, 'necessary fasciotomy done late' is a dead leg on a live patient. Pulses persisting mean nothing; compartments strangle capillaries first.
Leaving the OR
The handoff
- Procedure
- Right femoral embolectomy under local anaesthesia; AF the presumed source
- Result
- Clot retrieved proximally and distally; foot pink, Doppler signals throughout
- Anticoagulation
- Heparin infusion running; long-term plan pending cardiology
- Watch for
- Hourly foot checks, calf turgor, potassium and urine colour (reperfusion), groin haematoma
A fictional educational patient, handed over the way real ones are.
The postoperative course
- First hoursThe two failure modes watched in parallel: re-occlusion (foot cooling and quieting) and reperfusion injury (dark urine, rising potassium, tightening calf).
- POD 1Anticoagulation continued and the source hunted: echo and rhythm assessment, because the embolus that came once has a supplier.
- POD 2-5Mobilisation as the limb permits; fasciotomy wounds, if made, managed toward delayed closure or grafting.
- Long termThe anticoagulation decision formalised: an embolic event with AF is a lifelong conversation, and the discharge letter must say who owns it.