Arteries bring blood in, veins take it away. A limb with a repaired artery and a tied off major vein can still swell, congest and fail, which is why the vein is treated as part of the injury rather than as an afterthought.
Venous injury repair restores outflow from a limb after a major vein has been divided or torn. Smaller veins can safely be tied off because others take over, but a major vein such as the popliteal or femoral is repaired where the patient's condition allows, because losing it causes severe swelling and can jeopardise an otherwise successful arterial repair.
Most veins can be tied off without consequence. The limb has many parallel routes, and blood simply takes another. That is why a divided vein in the forearm or calf is rarely a problem on its own.
A few veins do not have an easy alternative. The popliteal vein behind the knee, the femoral vein in the thigh and the major veins of the upper arm carry the great majority of the outflow from the limb. Tying one of these off, particularly at the same time as an arterial injury, leaves blood arriving under pressure with nowhere to go. The limb swells hard, compartment pressures rise, and the arterial repair can thrombose as a result.
So the decision is made vein by vein. A stable patient with an isolated major vein injury has it repaired. A patient who is cold, bleeding and unstable has it tied off, because surviving the night matters more than the swelling that follows, and the swelling can be managed afterwards.
This is a judgement made in theatre, weighing the value of the vein against how well the patient is tolerating the operation.
The vein is inspected along with the artery, and a decision made about whether the limb can drain without it.
The vein is controlled above and below, and clot removed gently. Veins are thin walled and tear easily.
A clean division is sewn directly. A gap is bridged with a vein graft from elsewhere, or occasionally a panel built from opened vein.
Where both are injured, the vein is often repaired first so that the limb has somewhere to drain the moment arterial flow returns.
Compartments are usually released, because venous injury makes swelling worse and more dangerous.
Limb girth, colour and compartment pressures are watched closely. Elevation begins immediately. Blood thinning is usually started once bleeding risk allows.
Swelling peaks and then begins to settle. Fasciotomy wounds are closed or grafted in stages. Compression is introduced as wounds allow.
Graduated compression and elevation continue. A scan may be done to see whether the repaired vein has stayed open.
Residual swelling is managed with compression garments. Some patients need this indefinitely.
A repaired major vein reduces swelling and protects the arterial repair. Repaired veins do clot more often than repaired arteries, because flow through them is slower, and a proportion close over the following weeks. Even a vein that eventually closes is usually worth repairing, because it keeps outflow going through the critical early period while collateral channels develop. Long term swelling of the limb is common after major venous injury whether or not the vein stays open, and compression is often needed indefinitely.
Venous repairs carry a particular risk of clotting, and of that clot travelling.
Elevation and compression do much of the work here, and they continue long after discharge.
A limb with perfect arterial inflow and no outflow swells, becomes congested and can still be lost. Outflow matters as much as inflow in major trauma.
Keeping outflow going through the first days is often what saves the limb and protects the arterial repair, even if the vein closes later once collaterals have opened up.
Considerable swelling is expected after major venous injury. It is managed with elevation and compression, and improves over months.
Venous injury is frequently overlooked while attention goes to the artery. Treating both in the same operation is what prevents the swollen, congested limb that undoes an otherwise good repair.
Almost always part of the management of major trauma, and covered by health insurance and government schemes on the same basis as the rest of the emergency admission. A written estimate is provided once the extent of surgery is known.
Usually asked once the immediate danger has passed.
Ask your question →Usually because the patient was unstable and the priority was to finish the operation and get them to intensive care. Sometimes because the vein was too destroyed to join. Both are legitimate decisions, and the swelling that follows is managed afterwards.
Some long term swelling is common after major venous injury, whether the vein was repaired or tied off. It usually improves over the first year and is controlled with compression. A minority need a compression garment indefinitely.
Usually yes, once the bleeding risk has settled, because venous repairs clot more readily than arterial ones. The dose and duration depend on the injury and on any other bleeding sites.
It can, which is why anticoagulation is used and why sudden breathlessness or chest pain must be reported at once. It is uncommon but it is the reason for the precautions.
Seeing patients from across the city and beyond: read about the practice on the plastic surgeon in Surat page, or check what a written estimate covers on the costs and insurance page.
