Initial experience with a hydrophilic-coated guidewire for recanalization of chronic coronary occlusions

Area of Science:

• Cardiovascular Interventions
• Interventional Cardiology
• Vascular Access Techniques

Background:

• Chronic coronary occlusions remain a significant challenge in interventional cardiology.
• Existing recanalization techniques, including laser wire, have improved but still yield unsatisfactory outcomes.
• Previous attempts with conventional guidewires often fail for chronic occlusions.

Purpose of the Study:

• To evaluate the efficacy of a hydrophilic-coated guidewire (Terumo Crosswire) for chronic coronary occlusions.
• To assess success rates in patients where conventional guidewire attempts had previously failed.
• To identify predictors of successful recanalization using the Crosswire guidewire.

Main Methods:

• A nonrandomized, single-center investigation involving 106 patients with 107 chronic coronary occlusions.
• The Terumo Crosswire hydrophilic-coated guidewire was used after failure of conventional guidewires.
• Data collected included occlusion duration, length, location, and pre-procedure TIMI flow grade.

Main Results:

• A 42% overall success rate was achieved in recanalizing chronic coronary occlusions.
• Success rates varied by coronary artery location (e.g., 48% in right coronary artery) and graft status.
• Occlusion age (shorter duration more successful) and TIMI flow grade (higher grade more successful) were independent predictors of success.

Conclusions:

• The hydrophilic-coated Crosswire guidewire is an effective tool for treating chronic coronary occlusions, particularly when conventional guidewires fail.
• Patient outcomes were favorable, with no deaths or Q-wave myocardial infarctions reported.
• Vessel perforation occurred in 5 cases, with successful management of hemopericardium in 2 cases.