Are Millar PVR catheters compatible with older ARIA Pressure-Volume systems?

Catheters with a 'PVR-' prefix CAN NOT be used with the older Millar ARIA Pressure-Volume unit, but catheters with an 'SPR-' prefix can be used. The internal catheter wiring differs between the 'PVR-' and 'SPR-' catheters, so the former is not compatible.

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