Publications by authors named "Ayaka Arihara"

Article Synopsis
  • This study evaluated the long-term outcomes of patients who underwent thoracic endovascular aortic repair (TEVAR) using the GORE TAG and conformable GORE TAG grafts in a real-world setting, focusing on 10-year survival rates and freedom from aorta-related deaths.
  • Out of 331 patients treated from 2011 to 2021, 175 were analyzed, showing a mean follow-up of 46.5 months, with 30-day mortality at 2.86% and decreasing survival rates over 10 years: 42.4% overall survival and 95% freedom from aorta-related deaths at 9 years.
  • Complications included a 13.1% rate
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Purpose: The Clinical Frailty Scale (CFS), used to define frail patients, is significantly associated with clinical outcomes. The CFS can predict postoperative prognosis after cardiovascular procedures. However, no reports exist on the relationship between frailty defined by the CFS and thoracic endovascular aortic repair (TEVAR) outcomes.

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Objectives: This study was performed to assess postoperative aortic remodelling (AR) after total arch replacement for acute type A aortic dissection (AAD) with a frozen elephant trunk (FET) or conventional elephant trunk (cET). Furthermore, the shape of the residual true lumen was analysed based on elliptical Fourier analysis and evaluated as a predictor of AR.

Methods: This study involved patients who underwent total arch replacement with a cET or FET for AAD from December 2006 to January 2023 at five institutions.

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Objective: This study aimed to evaluate the long-term outcomes of surgical strategies for communicating DeBakey IIIb chronic dissecting aortic aneurysm, considering the optimal primary surgical repair to prevent aortic events.

Methods: From 2002 to 2021, 101 patients with communicating DeBakey IIIb chronic dissecting aortic aneurysm who underwent surgical repair were categorized based on the primary surgical repair: 1-stage repair of thoracoabdominal aortic aneurysm (TAAAR) (n = 22) or staged repair, such as descending thoracic aneurysm repair (DTAR) (n = 43) or total arch replacement with elephant trunk implantation (TARET) (n = 25), and thoracic endovascular aortic repair (TEVAR) (n = 11). Early and late postoperative outcomes were compared among the groups.

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Background: Aortic dissection with malperfusion necessitates emergency surgery and is associated with poor outcomes. Therefore, in this study, we analyzed patients' treatment courses from the initial management to hospital discharge in cases of acute aortic dissection (AAD) with malperfusion and investigated the risk factors associated with mortality.

Methods: We evaluated cases of AAD with malperfusion treated at our institution over a 16-year period from 2007 to 2022.

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Article Synopsis
  • The study examines the impact of cooling status during aortic surgery on the risk of transient neurologic dysfunction in patients undergoing total arch replacement.
  • It analyzes data from surgeries conducted between December 2011 and January 2021, focusing on various parameters such as cooling speed and the cooling area.
  • Findings suggest that both a larger cooling area and a faster cooling speed are linked to a higher incidence of transient neurologic dysfunction, indicating that excessive or rapid cooling could lead to brain injury.
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A 77-year-old male patient with immunoglobulin (Ig)G4-related disease was diagnosed with a 60-mm aortic arch aneurysm and atherosclerosis of the aorta advanced throughout the body. Aortic arch replacement surgery was performed with circulatory arrest at 28°C. One week later, the patient developed acute pancreatitis, followed by encapsulated necrosis in the chronic phase.

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Background: In patients with retrosternal neo-esophageal conduit after right thoracotomy, the approach to cardiac surgery could be challenging. Particularly, in patients with infective endocarditis, there is a risk of injury to the conduit through standard median sternotomy. Moreover, right lung adhesions could be predicted.

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Background We focused on coronary artery bypass grafting using the great saphenous vein and compared the no-touch great saphenous vein and conventional great saphenous vein. Methods Coronary artery bypass grafting using the great saphenous vein was performed at our hospital over a 15-year period from 2007/04 to 2022/08. The primary endpoint was the patency of the great saphenous vein at discharge, and secondary endpoints were delayed healing of the great saphenous vein harvest wound, delayed healing of the mid-thoracic wound, and factors related to coronary artery bypass surgery.

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Objective: The purpose of this study was to statistically analyze the factors that influence cardiovascular surgery recruitment.

Methods: Fifth- and sixth-year medical students and first-year residents who participated in cardiovascular surgery-related events at our university over a 10-year period from April 2013 to August 2022 were included. The primary endpoint was admission to the department of cardiovascular surgery.

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A 46-year-old male developed a Stanford type B aortic dissection. At age 48, he underwent left open thoracic descending aorta replacement because of the enlargement of the descending thoracic aorta. At 51 years old, he underwent abdominal aorta replacement because of ischemia in the right lower extremity and the enlargement of an abdominal aortic aneurysm.

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Background: Various preventive measures and treatment methods exist to prevent paraplegia during thoracic aortic surgery. Postoperative cerebrospinal fluid drainage (CSFD) is one of the treatment options when paraplegia occurs. This study aimed to evaluate the neurological efficacy of postoperative CSFD in patients undergoing thoracic aortic and thoracoabdominal aortic surgery.

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Objective: The purpose of this study is to evaluate the results of vascular surgery performed at our hospital, a tertiary emergency general hospital, in patients undergoing surgery in other departments. The results of the study were reviewed.

Methods: The study included cases in which cardiovascular surgery was performed at the request of other departments over a 15-year period from January 2006 to October 2022.

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Vascular involvement, especially in the iliofemoral segment, is rare in type 1 neurofibromatosis. We herein report a case involving a 49-year-old male diagnosed with type 1 neurofibromatosis who presented with right inguinal pain and swelling. CT angiography revealed a 50-mm aneurysm extending from the right external artery to the common femoral artery.

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Purpose: This multicenter, prospective, observational study aimed to compare Zilver PTX and Eluvia stents in real-world settings for treating femoropopliteal lesions as the differences in the 1-year outcomes of these stents have not been elucidated.

Materials And Methods: Overall, 200 limbs with native femoropopliteal artery disease were treated with Zilver PTX (96 limbs) or Eluvia (104 limbs) at 8 Japanese hospitals between February 2019 and September 2020. The primary outcome measure of this study was primary patency at 12 months, defined as a peak systolic velocity ratio of ≤2.

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Purpose: To report the initial outcomes of physician-modified inner branched endovascular repair (PMiBEVAR) for pararenal aneurysms (PRAs), thoracoabdominal aortic aneurysms (TAAAs), and aortic arch aneurysms in high-surgical-risk patients.

Materials And Methods: A total of 10 patients (6 men; median age, 83.0 years) treated using PMiBEVAR were enrolled in this retrospective, single-center study.

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Objective: Virtual reality can be applied preoperatively by surgeons to gain precise insights into a patient's anatomy for planning minimally invasive coronary artery bypass grafting (CABG) with in situ arterial grafts. This study aimed to examine virtual reality simulation for minimally invasive CABG with in situ arterial grafts.

Methods: Preoperative stereolithographic files in 35 in situ arterial grafts were converted using 320-slice computed tomography and workstation.

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Cystic echinococcosis is an uncommon zoonosis in Japan. Typical location of the cyst is the liver and the lung. Mediastinal hydatidosis is found in less than 0.

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Objective: This study aimed to examine the feasibility and safety of minimally invasive cardiac surgery coronary artery bypass grafting using an ultrasonically skeletonized internal thoracic artery in the authors' initial experience.

Methods: From February 2012 to May 2021, 247 consecutive patients who underwent minimally invasive coronary artery bypass grafting using an ultrasonically skeletonized internal thoracic artery were reviewed retrospectively. Internal thoracic arteries were harvested in a full skeletonized fashion using an ultrasonic scalpel via left minithoracotomy.

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We present two consecutive patients with secondary aortoesophageal fistula (AEF) who successfully underwent total repair including partial esophagectomy, removal of infected vascular prosthesis, graft replacement, and esophageal reconstruction using gastric tube concomitant to omental wrapping for staged operation in short phase. One 81-year-old male who had undergone thoracic endovascular aortic repair and another 69-year-old male who had undergone graft replacement of the descending thoracic aorta were referred to our hospital for treatment of AEF. In the first operation, partial esophagectomy, removal of infected vascular prosthesis, and graft replacement were performed via left rib-cross thoracotomy.

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