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The diverse technical choices during the implantation of the totally implantable venous access ports: A review.
Phlebology
December 2024
Department of General Surgery, the Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China.
Although the implantation of the totally implantable venous access ports globally is increasingly sophisticated, there is still a dearth of absolute standardization in the technical choice of each surgical step, with numerous technologies demonstrating significant applicability. This review comprehensively summarizes the diverse choices of implantation procedural techniques related to the pocket location, vein access, port specification, catheterization method, puncture guidance, single-incision technique, catheter tip positioning method, port fixation, skin closure, and first-use period. The aim is to provide surgeons with alternative options when they encounter different problems in each procedure due to the diverse clinical characteristics of patients during venous port implantation.
View Article and Find Full Text PDFFirst In-Vivo demonstration of 1000fps High Speed Coronary Angiography (HSCA) in a swine animal model.
Proc SPIE Int Soc Opt Eng
February 2024
Canon Stroke and Vascular Research Center, University at Buffalo.
Article Synopsis
- High-speed angiography (HSA) using 1000 fps imaging has been successfully utilized to visualize blood flow in neurovascular systems and is now being tested in cardiovascular systems with a swine model.* -
- A 5 French catheter was inserted into a swine's right coronary artery, and iodine contrast was injected while capturing the imaging at a controlled rate, resulting in effective visualization of blood flow and velocity profiles.* -
- The study highlights the advantages of high spatial and temporal resolution in HSCA, showing potential for determining treatment needs for artery stenoses and suggesting further research into its clinical applications.*
In vivo assessment of catheter-tissue contact using tissue proximity indication and its impact on cardiac lesion formation in pulsed field ablation.
Heart Rhythm
October 2024
Biosense Webster Inc, Irvine, California.
Article Synopsis
- - The study explored how tissue proximity indication (TPI), which assesses catheter contact with tissue, affects the success of lesion formation during pulsed field ablation (PFA) in live porcine models.
- - Researchers compared lesions formed under different contact conditions (no/minimum vs. consistent contact) and found that consistent contact resulted in significantly larger and more effective lesions, with greater transmurality.
- - The results highlight that a reliable TPI signal is crucial for achieving optimal lesion characteristics, suggesting that maintaining good tissue contact can enhance the outcomes of PFA procedures.
Local calcium chloride infusion after pulsed field ablation enhances acute efficacy of cardiac electroporation.
J Cardiovasc Electrophysiol
December 2024
Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA.
Introduction: Pulsed field ablation (PFA) has emerged as an innovative therapy for cardiac arrhythmias. Drawing parallels with PFA's application in solid tumors, calcium chloride (CaCl) as an adjuvant therapy, known as calcium electroporation, may amplify PFA's apoptotic effects. We propose that PFA in the atrium could enhance calcium uptake through PFA-created pores, thereby increasing ablation efficacy even at reduced power levels by exploiting PFA's permeabilization effects.
View Article and Find Full Text PDFThe Utility of the "LEONIS Mova" Steering Microcatheter in Flow Diverter Placement.
J Neuroendovasc Ther
July 2024
Department of Comprehensive Strokology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan.
Objective: LEONIS Mova (SB-KAWASUMI LABORATORIES, Kanagawa, Japan, hereinafter called LEONIS Mova) is a steerable microcatheter (MC) that enables angle adjustment of the catheter tip using a hand-operated dial. LEONIS Mova may be useful for flow diverter placement when access to the distal parent artery with a conventional MC and microguidewire (MGW) is considered difficult or impossible. Here, we report three such cases encountered during flow diverter placement in large and giant internal carotid artery aneurysms.
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