Key result
The use of the FilterWire EX device in small coronary arteries (<3.5 mm) was safe and feasible, with distal embolization occurring in 4% of vessels and no device-induced vessel dissection.
Why the study?
Is the use of a distal filter protection device (FilterWire EX) safe and feasible during percutaneous revascularization of small coronary arteries (<3.5 mm)?
Observational (n=49)
Is the use of a distal filter protection device (FilterWire EX) safe and feasible during percutaneous revascularization of small coronary arteries (<3.5 mm)?
The use of the FilterWire EX distal protection device is feasible and safe in small coronary arteries (<3.5 mm), expanding its potential application beyond the previously recommended 3.5-5.5 mm vessel diameter range.
May support FilterWire EX use in small vessels; hypothesis-generating and requires randomized confirmation before practice change.
The FilterWire EX is one of the filter protection devices developed as alternatives to balloon occlusion system for percutaneous coronary intervention. Its use has been recommended in vessels between 3.5 and 5.5 mm in diameter and no data are available on its use in smaller vessels. We evaluated the safety and feasibility of using FilterWire EX in native coronary arteries smaller than 3.5 mm. We successfully deployed and retrieved the FilterWire EX in 49 coronary arteries with a mean vessel diameter of 2.62 +/- 0.45 mm at device deployment. Reversible vasospasm was observed in 24 (50%) vessels, coronary flow was temporarily reduced in 22 (44.9%), and distal embolization was noted in 2 (4%). There was no vessel dissection induced by the device. These data suggest that it is safe and feasible to use the FilterWire EX in small coronary arteries.
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Chen et al. (2004) conducted an observational in percutaneous revascularization of small coronary arteries (n=49). FilterWire EX was evaluated on Safety and feasibility (including vasospasm, coronary flow reduction, distal embolization, and vessel dissection). The use of the FilterWire EX device in small coronary arteries (<3.5 mm) was safe and feasible, with distal embolization occurring in 4% of vessels and no device-induced vessel dissection.
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