What is the recommended management for acute limb ischaemia occurring between 6 to 12 hours?

The recommended management for acute limb ischaemia that has occurred between 6 to 12 hours is angiography with the consideration of intraarterial thrombolysis. In this time frame, the ischemic muscle is still viable but at risk of necrosis if blood flow is not restored. Angiography is essential for diagnosing the level and cause of occlusion in the vascular system, whether it be thrombus or embolus, and it helps guide further treatment.

Intraarterial thrombolysis can be performed during this procedure, especially if there is a significant thrombus obstructing blood flow. This approach can potentially salvage the limb by restoring adequate perfusion through pharmacological means, avoiding the need for more drastic interventions that could lead to amputation.

This management is crucial in balancing the need for prompt intervention with the preservation of limb function, which may still be possible within this 6 to 12-hour window. Other management options, such as observation or physiotherapy, would not adequately address the immediate need for restoring blood flow, and immediate amputation would be too aggressive given the timeframe and potential viability of the limb.