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A Novel Technique of "Drag-Drill" for Retrograde Chronic Total Occlusion Revascularization in Heavily Calcified Tortuous Lesions: A Case Report.

Catheter Cardiovasc Interv

January 2025

Department of Cardiology, Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China.

We report the case of a 73-year-old male with a history of recurrent coronary interventions who presented with progressive angina and was diagnosed with a chronic total occlusion (CTO) of a heavily calcified and tortuous right coronary artery (RCA). Standard antegrade and retrograde techniques were attempted but failed due to the complexity of the lesion. A novel "Drag-Drill" technique was employed, utilizing a retrogradely externalized RG3 guidewire as a rotational atherectomy wire, enabling successful rotational atherectomy and percutaneous coronary intervention (PCI).

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Background And Aims: When dealing with severely calcified lesions in endovascular therapy (EVT) for lower extremity artery disease (LEAD), navigating through severely calcified chronic total occlusion (CTO) using hard-tip guidewires can be challenging. To address this issue, we employed a novel highly intensive penetration (HIP) technique. This technique involves modifying the tail of a 0.

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Background: In general, it is relatively easy to remove peripherally inserted central venous catheter (PICC) by gentle traction without any complications. However, the removal of PICC can be challenging occasionally. If the standard interventions fail to remove the catheter, there are no clear recommendations about what to do.

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Purpose: Tibial valgus osteotomy has shown to be a successful and cost-effective procedure. The advent of image processing and three-dimensional (3D) printing is an interesting tool for achieving more accurate and reproducible results. The aim of our study was to compare the accuracy of the conventional technique and the use of customized guides in the correction of tibial deformities in tibial varus patients, the surgical and clinical benefits, and the impact of treatment in the outpatient setting.

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The authors propose a modified transcatheter aortic valve replacement technique wherein the removal of the guidewire and delivery catheter immediately after the valve implantation helps to not only shorten the procedure but also decrease complications induced by the guidewire and delivery catheter.

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