Publications by authors named "Ichihashi S"

Background: Extending the distal sealing zone into the external iliac artery is sometimes necessary during endovascular abdominal aortic repair. As the use of an iliac branch device is contingent upon certain anatomical requirements, the application of this device is not universal. Herein, we present an alternative method to preserve hypogastric artery perfusion using a physician-modified fenestrated (PMF) AFX limb (Endologix, Inc.

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Purpose: To evaluate the effect of drug-coated balloon (DCB) with high-dose paclitaxel for the treatment of restenotic dysfunctional arteriovenous fistulae (AVFs).

Materials And Methods: In this single-arm, multicenter, prospective, observational study, 334 patients who underwent DCB angioplasty using IN.PACT AV (Medtronic, Plymouth, Minnesota) for the first time for restenotic lesions of dysfunctional AVFs between April 2021 and March 2022 were registered.

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Purpose: During thoracic endovascular aortic repair for complicated Stanford type B aortic dissection, large bare stent placement for the abdominal aorta is sometimes necessary. In smaller abdominal aortic diameter cases, we used the stripped AFX aortic cuff as a scaffolding bare stent rather than the Zenith Dissection Endovascular Stent, which is a commercially available, large bare stent. In this study, we evaluated the feasibility of the stripped AFX aortic cuff and experiments were conducted to compare the stripped AFX and the Zenith Dissection Endovascular Stent.

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Article Synopsis
  • High-dose drug-coated balloons (HD-DCB) and polymer-based drug-eluting stents (PB-DES) are both treatments for femoropopliteal artery disease, showing favorable outcomes in clinical trials, but their comparative effectiveness was unclear.
  • This study analyzed data from 2 large registries with 2470 patients, focusing on the 1-year restenosis rate as the primary endpoint, and additional outcomes like reocclusion rate and major adverse events as secondary endpoints.
  • Results indicated that the 1-year restenosis rate was notably lower for the PB-DES group (16.0%) compared to the HD-DCB group (22.0%), but no significant differences were found in other clinical outcomes
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Background: Sirolimus-coated balloons (SCB) for the treatment of femoropopliteal (FP) lesions have not been systematically studied, but initial outcomes from early studies are promising.

Objectives: The authors sought to evaluate the safety and efficacy of the SELUTION SLR SCB, composed of proprietary microreservoir technology combining sirolimus and biodegradable polymer, when used to treat mild-to-moderate FP disease in a Japanese population.

Methods: This multicenter, prospective, single-arm study (SELUTION SFA JAPAN) enrolled 134 patients with FP disease.

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High-pressure water freeze fracturing is a method for preparing water-containing samples such as hydrogels for scanning electron microscopy (SEM), in which a sample is placed in a divisible pressure vessel, filled with water, sealed, frozen with liquid nitrogen and then vacuum dried after the vessel is divided. The pressure (∼200 MPa) generated by the phase transition from water to ice is expected to inhibit ice crystal formation that causes large deformation of microstructure in the sample. To maximize the useable sample size, where SEM observation is not affected by ice crystal growth, preparation conditions including the size of pressure vessel were examined in this work.

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Purpose: Recent reports of the Zenith Alpha abdominal endovascular graft (Zenith Alpha AAA, Cook, Inc., Bloomington, Indiana) have demonstrated an unexpectedly high incidence of limb graft occlusion (LGO). The purpose of this study was to prospectively evaluate the performance of the Zenith AAA in Japan, with a specific focus on LGO.

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Article Synopsis
  • * Two weeks post-surgery, the patient reported fatigue in the right side of the jaw during meals and low blood pressure in the right arm.
  • * Angiography showed a flap in the brachiocephalic artery, leading to a high-pressure gradient, and subsequent stenting resolved the patient's symptoms.
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The safety and effectiveness of the GORE VIABAHN Endoprosthesis for treatment of symptomatic patients with peripheral artery disease (PAD) and complex femoropopliteal (FP) lesions was assessed in a real-world Japanese practice setting. : A prospective, multicenter, postmarket surveillance study was conducted from 2016 to 2017 at 64 sites in Japan. Symptomatic patients with PAD and FP lesions ⩾ 10 cm and reference vessel diameters ranging from 4.

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Tardive dyskinesia (TD) is an involuntary muscle movement typically caused by prolonged exposure to antipsychotic medications. Depending on the symptom severity and the affected body parts, it can cause a terrible decline in patients' daily activities and life quality. TD often persists despite discontinuation of the offending drugs.

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Background: Juxtarenal aortic occlusion (JRAO), in which the occlusion of the aorta extends to just below the renal artery, is often treated by bypass surgery because of concerns about the risk of procedural failure and fatal embolization to abdominal organs when treated with endovascular treatment (EVT). This study assessed the outcome of EVT for JRAO compared with aorto-biiliac /aorto-bifemoral (AOB) or axillo-bifemoral (AXB) bypass.

Methods: A retrospective review of an international database created by 30 centers in Asia (CHronic Abdominal Aortic Occlusion, ASian Multicenter registry) was performed for patients who underwent revascularization for chronic total occlusion of the infrarenal aorta from 2007 to 2017.

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Background: Although the 1-year clinical outcomes of fluoropolymer-based drug-eluting stents (FP-DES) were favorable for the treatment of real-world femoropopliteal lesions in symptomatic peripheral artery disease (PAD), their performance beyond 1 year remained unknown. The current study determined the 3-year clinical course of FP-DES implantation for real-world femoropopliteal lesions.

Methods: This multicenter, prospective, observational study evaluated 1204 limbs (chronic limb-threatening ischemia, 34.

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Article Synopsis
  • The study investigates the impact of the minimal lumen area (MLA) measured by intravascular ultrasound on clinical outcomes after fluoropolymer-based drug-eluting stent (FP-DES) implantation for leg artery problems.
  • Results show that larger MLA is linked to a lower risk of restenosis (narrowing of the artery) within one year but is also associated with a higher risk of aneurysmal degeneration (abnormal enlargement).
  • The findings highlight that MLA could be an important predictor in managing clinical outcomes for patients receiving FP-DES treatment.
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Article Synopsis
  • Percutaneous deep venous arterialization (pDVA) shows effective results for patients with chronic limb-threatening ischemia (CLTI) who have no other treatment options available.
  • In regions where specialized pDVA devices are not covered, alternative off-the-shelf techniques like AV spear, VAST, and guidewire use have gained popularity.
  • The success rates of these alternative methods are comparable to those using dedicated devices, making pDVA a potential last resort for patients, including those with complications from limb amputation.
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Objective: Surgical thromboendarterectomy (TEA) is the standard treatment for an occlusive lesion of the common femoral artery (CFA). However, there is limited knowledge on the need for patch angioplasty in CFA TEA. The objective of this study was to compare the peri-operative and two year results of CFA TEA with or without patch angioplasty.

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Background: Management of docetaxel-induced edema is important as severe edema may lead to discontinuation of chemotherapy. Patients with stage IV breast cancer (BC) treated with docetaxel have shown lower limb edema; however, details of its developmental and healing processes are unknown, and thus management strategies have not been established. The aim of this study was to investigate the characteristics of the development and healing process of docetaxel-induced lower limb edema in stage IV BC patients.

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Objective: To compare the results of endovascular treatment with drug-eluting stents (DES) and drug-coated balloons (DCB) in atherosclerotic lesions in the femoropopliteal artery, as well as to assess restenotic patterns.

Methods: Clinical data from 617 cases treated with DES or DCB for femoropopliteal diseases were analyzed in this multicenter, retrospective cohort study. From these, 290 DES and 145 DCB cases were extracted by propensity score matching.

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Purpose: To compare the 3-year clinical outcomes of endoluminal bypass with those of surgical bypass for complex femoropopliteal (FP) arterial lesions.

Materials And Methods: In this retrospective multicenter study, 530 patients with symptomatic peripheral artery disease (Rutherford classification 1-3, 66.0%; 4-6, 34.

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Aim: The present study investigated the effects of additional cilostazol administration on the 12-month risk of restenosis after femoropopliteal heparin-bonded stent graft implantation.

Methods: This study was a sub-analysis of the Viabahn stent graft placement for femoropopliteal disease reQUIring endovaScular tHerapy (VANQUISH) study, which was a prospective multicenter study investigating patients who received Viabahn stent graft (W.L.

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Purpose: Chronic limb-threatening ischemia (CLTI) represents the clinical end stage of lower extremity peripheral arterial disease (PAD). Although conventional open and endovascular revascularization options are available, some CLTI patients do not respond to these treatments, generally due to small vessel occlusive disease, with only limited or no clinical improvement achieved. This article aims to provide insights related to pertinent venous anatomy of the leg and below the ankle and a technical review of percutaneous deep venous arterialization (pDVA) creation using commonly-available devices.

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Objective: The objective of this study was to investigate the mid-term outcomes of embolization procedures for type II endoleak after endovascular abdominal aortic repair, and clarify the risk factors for aneurysm enlargement after embolization procedures.

Methods: This was a retrospective multicenter registry study enrolling patients who underwent embolization procedures for type II endoleaks after EVAR from January 2012 to December 2018 at 19 Japanese centers. The primary end point was the rate of freedom from aneurysm enlargement, more than 5 mm in the aortic maximum diameter, after an embolization procedure.

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Revascularization plays an important role in the treatment of chronic limb-threatening ischemia. Evaluation of hemodynamic compromise in the lower extremity is required to optimize the treatment strategy for each patient. A variety of methods have been reported to detect arterial obstruction or impaired foot perfusion.

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Background: Treatment with a fluoropolymer-based drug-eluting stent (FP-DES has been widely applied to the contemporary femoropopliteal practice with durable outcomes. Nevertheless, the impact of intravascular ultrasound (IVUS) utilization on clinical outcomes after FP-DES implantation has not been determined.

Objectives: This study aimed to investigate the impact of IVUS on 1-year clinical outcomes after FP-DES) implantation for femoropopliteal lesions in patients with symptomatic peripheral artery disease.

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