Flow Measurement for Distal Limb Perfusion – Yes, It Exists!

A distal perfusion catheter (DPC) is often placed to prevent lower limb ischemia. But if the flow through that catheter isn’t monitored, patients can suffer from either ischemia or hyperperfusion. Either complication can cause irreversible damage.

While NIRS can help track tissue oxygenation, it’s not a substitute for actual flow data. In fact, ELSO guidelines call for both NIRS and flow measurement when monitoring distal limb perfusion. To be precise, ELSO recommends:

• A target flow measurement of at least 100ml/min
• A tissue saturation by NIRS above 50%, but preferably 60% (with less than a 20% difference between the two limbs)

This is not an either-or situation. You need both. And that’s where Transonic’s AureFlo and Optima Flowmeter come in.

Transonic’s AureFlo sensors are designed to clamp directly onto distal perfusion lines, providing real-time measurement without compromising sterility or setup. You’ll get immediate data to confirm:

• Adequate perfusion to the limb
• You’re within safe flow thresholds (100 mL/min, per ELSO)
• Forewarning for both compartment syndrome and limb ischemia

The Optima Flowmeter and AureFlo expansion, which includes a cart and flowtrace screen, are fully compatible with all Transonic sensors and probes. Either system provides quick, dependable quantitative flow readings at bedside or in the OR. They are designed for teams like yours who need reliable flow data in real time, without additional setup or equipment changes.

Whether you're in the OR, ICU or cath lab, Transonic technology gives you a new level of insight into your ECMO circuit. With Transonic, you can protect the limb while you’re saving the life.