Clinical experience of 4F child catheter in interventions of complex coronary lesions

Objective: It has been demonstrated that 4F child catheter could be inserted into the mother guiding catheter for back up support improvement, stent or balloon delivery, etc. Here, we aimed to determine the potential role of 4F child catheter in treating complex coronary lesions. Methods and results: We retrospectively analyzed 40 lesions treated by 4F child catheter. The 4F child catheter was beneficial to facilitate stent or balloon delivery, to aid guidewire crossing, to capture stent, or to pick up retrograde guidewire. For CTO PCI, picking up the retrograde guidewire using the advanced greeting technique accounted for 32.1%, indicating it was efficient for CTO revascularization. Lesion success was 95%, device success was 95%, and procedure success was 92.5%. One patient failed because of acute thrombosis after successful stent deployment, one failed due to the guidewire unable to cross the target lesion. There was one instance of stent dislodgment and one instance of little pericardial effusion. Conclusions: The 4F child catheter provided higher successful rate and it was a viable device in treating complex coronary lesions. *Correspondence to: Leisheng Ru, Department of Cardiology, Bethune International Peace Hospital, Shijiazhuang, Hebei, China, Tel: 86-031187978302; Fax: 86-031187978302; E-mail: muyeqiufeng2008@163.com