Explanipedia

Transcatheter Closure of an Ascending Aortic Pseudoaneurysm Guided by Intracardiac Echocardiography Open

Manabu Sato, Hiromasa Hayama, Yae Matsuo, Y Yazaki, Kenji Makino , et al. · 2025

Cardiac Endoscopy Reveals Microthrombus After Left Atrial Appendage Closure Open

Jumpei Yamamoto, Takayuki Shimizu, Hiromasa Hayama, Yoshinari Enomoto, Go Hashimoto , et al. · 2025

Early Outcomes Following Transcatheter Closure With the Amplatzer Vascular Plug and Duct Occluder for Mitral Paravalvular Leak in Japanese Patients Open

Hiroki Niikura, Kenji Makino, Norihiro Kogame, Go Hashimoto, Y Yazaki , et al. · 2024

Our findings suggest that transcatheter PVL closure with AVP-II/ADO-II can be feasible and safe in Japanese patients with mitral PVL, leading to satisfactory early clinical outcomes.

New Insights and Perspective on Bioprosthetic Valve Fracture From Bench Testing and Computed Tomography Analysis Open

Go Hashimoto, Santiago García, Hirotomo Sato, Miho Fukui, Muhammad Hammadah , et al. · 2024

Altered properties of amyloidogenic prion protein in genetic Creutzfeldt–Jakob disease with PRNP V180I mutation in response to pentosan polysulfate Open

Masahiro Shijo, M. Yoshimura, Tsuyoshi Omae, Go Hashimoto, Tadataka Mizoguchi , et al. · 2023

Genetic Creutzfeldt–Jakob disease (gCJD) with V180I prion protein gene ( PRNP ) mutation shows weaker prion protein (PrP) deposition histologically compared with sporadic CJD, and it is more difficult to detect protease‐resistant prion pro…

Successful Percutaneous Closure of Complicated Residual Patent Ductus Arteriosus Shunts Resembling Pig Nostrils Following Second-Time Surgical Treatment Open

Shota Saito, Hiromasa Hayama, Hidehiko Hara, Go Hashimoto, Norihiro Kogame , et al. · 2023

Cerebral venous thrombosis due to iron-deficiency anemia: a case report Open

Masaki Koga, Tadataka Mizoguchi, Go Hashimoto, Naoki Tagawa, Kota Mori , et al. · 2023

症例は43歳の女性.来院前日より頭痛,書字不能,言語理解悪く当院を受診.頭部CTで左頭頂葉皮質下と左頭頂部皮質血管に高吸収域を,頭部MRI T2*で同部位に線状の低信号域を認めた.入院翌日の頭部MRVで左頭頂部皮質静脈の描出不良あり,脳静脈血栓症に伴う皮質下出血と診断した.血液検査では鉄欠乏性貧血を,腹部CTで径8 cm大の子宮筋腫を認め,子宮筋腫による貧血が考えられた.プロテインS/C・アンチトロンビン3の欠損や抗リン脂質抗体などの血栓性素因はなかった.脳出血に対して降圧…

Usefulness of Ultrasonography in the Diagnosis and Follow-up of Extracranial Vertebral Artery Dissection Open

Marin Sato, Tadataka Mizoguchi, Yusuke Imamura, Yoshitaka Yamada, Yohei Muraya , et al. · 2022

Extracranial vertebral artery dissection is a cerebrovascular disease that occurs most commonly in young people. A 32-year-old man experienced sudden cervical pain and was diagnosed with left vertebral artery dissection after arterial chan…

Deformation of Transcatheter Aortic Valve Prostheses: Implications for Hypoattenuating Leaflet Thickening and Clinical Outcomes Open

Miho Fukui, Vinayak Bapat, Santiago García, Marshall Dworak, Go Hashimoto , et al. · 2022

Background: Although transcatheter aortic valve replacement (TAVR) therapy continues to grow, there have been concerns about the occurrence of hypoattenuating leaflet thickening (HALT), which may affect prosthesis function or durability. T…

Association of Left Ventricular Remodeling Assessment by Cardiac Magnetic Resonance With Outcomes in Patients With Chronic Aortic Regurgitation Open

Go Hashimoto, Maurice Enriquez–Sarano, Larissa Stanberry, Felix Oh, Matthew Wang , et al. · 2022

In patients with chronic moderate or severe AR, patients presenting with heart failure symptoms have greater LVESVi by CMR than those with no or minimal symptoms. In patients with no or minimal symptoms, CMR quantification of LVESVi and AR…

Coaptation Reserve Predicts Optimal Reduction in Mitral Regurgitation and Long-Term Survival With Transcatheter Edge-to-Edge Repair Open

Hirotomo Sato, João L. Cavalcante, Richard Bae, Vinayak Bapat, Santiago García , et al. · 2022

Background: Although transcatheter edge-to-edge repair (TEER) is effective and safe, there is a need for better prediction of optimal outcomes. We aimed to determine predictors of optimal reduction in mitral regurgitation (MR) and survival…

Computed Tomography Planning for Transcatheter Mitral Valve Replacement Open

Go Hashimoto, Bernardo B.C. Lopes, Hirotomo Sato, Miho Fukui, Santiago García , et al. · 2022

Association of baseline and change in global longitudinal strain by computed tomography with post-transcatheter aortic valve replacement outcomes Open

Miho Fukui, Go Hashimoto, Bernardo B.C. Lopes, Larissa Stanberry, Santiago García , et al. · 2021

Aims Transcatheter aortic valve replacement (TAVR) procedural planning requires computed tomography angiography (CTA) which allows for the assessment of left ventricular global longitudinal strain (CTA-LVGLS). There is, however, limited da…

The left ventricular remodeling assessment by cardiac magnetic resonance in chronic aortic regurgitation; implications for outcome Open

Go Hashimoto, Maurice Enriquez–Sarano, Hirotomo Sato, Bernardo B.C. Lopes, Miho Fukui , et al. · 2021

Background Chronic aortic regurgitation (AR) causes left ventricular (LV) volume overload resulting in progressive LV remodeling, which negatively affect clinical outcome. Clinical Guidelines recommend assessment of LV remodeling by echoca…

Primary Nondural Central Nervous System Marginal ZoneB-Cell Lymphoma of the Mucosa-Associated Lymphoid Tissue Type Mimicking CNS Inflammatory Diseases Open

Yasuo Sugita, Go Hashimoto, Kenji Fukuda, Kenji Takahashi, Taro Shioga , et al. · 2021

Marginal zone B-cell lymphomas (MZBCLs) are non-Hodgkin lymphomas arising from postgerminal center marginal zone B cells. MZBCLs are subclassified into extranodal, nodal, and splenic MZBCLs. Primary nondural central nervous system (CNS) MZ…

Natural history observations in moderate aortic stenosis Open

Yu Du, Mario Gössl, Santiago García, Maurice Enriquez–Sarano, João L. Cavalcante , et al. · 2021

Usefulness of microbubble test by transthoracic echocardiography Open

Keita Takahashi, Koichi Yoshikawa, Jun FUJISAKI, Iruru Maetani, Hiromasa Hayama , et al. · 2021

Patent foramen ovale (PFO) is associated with cerebral embolism of unknown embolic source and migraine, and recently, percutaneous catheter closure has been performed. PFO is confirmed by color Doppler echocardiography as a short-circuitin…

Functional DSCT assessment of tricuspid regurgitation: AROA reproducibility and comparison with 3D TEE Open

Bernardo Cunha Lopes, Go Hashimoto, Miho Fukui, Yu Du, Richard Bae , et al. · 2021

Funding Acknowledgements Type of funding sources: None. onbehalf Minneapolis Heart Institute Foundation Background Tricuspid regurgitation (TR) assessment by echocardiography is often challenging. Functional dual-source CT (DSCT) with thir…

Computed tomography derived left ventricular global longitudinal strain associate with clinical outcomes in patients undergoing transcatheter aortic valve replacement Open

Miho Fukui, Go Hashimoto, Bernardo B.C. Lopes, Yu Du, L Stanberry , et al. · 2021

Funding Acknowledgements Type of funding sources: None. Background Computed tomography angiography (CTA) is key imaging modality for procedure planning for transcatheter aortic valve replacement (TAVR). Functional assessment by CTA with LV…

Computed tomography characteristics of patients with functional MR receiving MitraClip Open

Go Hashimoto, Bernardo B.C. Lopes, Miho Fukui, Maurice Enriquez–Sarano, Santiago García , et al. · 2021

Funding Acknowledgements Type of funding sources: None. Background Percutaneous leaflet repair with the MitraClip device (Abbott Vascular, Menlo Park, CA) is safe and effective in patients with severe functional mitral regurgitation (FMR).…

“Commissural drop” wiring technique facilitates catheter crossing of severely stenotic aortic valve Open

Yu Du, Paul Sorajja, Miho Fukui, Go Hashimoto, Aisha Ahmed , et al. · 2020

To the Editor: An 82-year-old man with symptomatic severe calcific aortic valve stenosis (peak velocity: 5.19 m/s; mean gradient: 78.0 mmHg; aortic valve area: 0.48 cm2) underwent transfemoral transcatheter aortic valve replacement. During…

Ischemic Stroke Caused by Carotid Stump at the Common Carotid Artery Open

Go Hashimoto, Shinichi Wada, Takao Morita, Saori Tomohara, Kenta Hara , et al. · 2020

An 84-year-old man developed motor aphasia and right hemiparesis on postoperative day 1 after orchiectomy for suspected malignant lymphoma. He had a history of thoracic endovascular aortic repair for aortic aneurysm using a bypass graft fr…

Neurological Disorders Identified during Treatment of a SARS-CoV-2 Infection Open

Shinichi Wada, Yoji Nagasaki, Yoko Arimizu, Masatoshi Shimo, Yuta Matsukuma , et al. · 2020

A 69-year-old man was admitted to our hospital under diagnosis of pneumonia due to severe acute respiratory syndrome-corona virus 2 (SARS-CoV-2) (Day 0). He underwent endotracheal intubation from Day 3. Although his respiratory condition i…

P1713 A case of quadricuspid aortic valve complicated with infective endocarditis diagnosed by 3D transesophageal echocardiography Open

Go Hashimoto, S Ide, Hiromasa Hayama, Kenji Makino, Takenori Otsuka , et al. · 2020

Background Quadricuspid aortic valve (QAV) is a rare congenital heart disease with an estimated incidence of 0.008% to 1.46%. The functional status of QAV is predominantly a pure aortic regurgitation. The extensive use of echocardiography …

1638 A case of capturing changes in interatrial blood flow and anatomical structure during percutaneous PFO closure with platypnea orthodeoxia syndrome using intra-cardiac echocardiography Open

Go Hashimoto, S Ide, Hiromasa Hayama, Kenji Makino, Takenori Otsuka , et al. · 2020

Background Platypnea–orthodeoxia syndrome (POS) is an uncommon condition characterized by positional dyspnea and hypoxemia due to intracardiac right-to-left shunting through a patent foramen ovale (PFO). The most commonly associated condit…

P1528 Prognostic impact of pulmonary arterial wave reflection in heart failure Open

Hiromasa Hayama, Toshifumi Uejima, J Cho, Lisa Takahashi, Hisao Hara , et al. · 2020

Background Pulmonary hypertension (PH) is prevalent and is associated with adverse outcomes in heart failure. The pathophysiology of PH is heterogeneous, including pre-capillary PH and combined pre- and post-capillary PH. The latter PH has…

Case report: transient ischemic stroke caused by internal carotid artery occlusion due to compression by pituitary apoplexy and hemodynamic mechanism Open

Go Hashimoto, Shinichi Wada, Fumitaka Yoshino, Takahiro Kuwashiro, Masahiro Yasaka , et al. · 2020

An 87-year-old blind man was admitted due to repeatedly disturbed consciousness and fever. Brain CT showed a pituitary tumor with a hematoma and an occlusive lesion of the right internal carotid artery. He experienced consciousness disturb…

P1480 A case of triple left ventricular aneurysms diagnosed by CT and echocardiography Open

Kenji Makino, Go Hashimoto, S Ide, Hiromasa Hayama, Yukiko Isekame , et al. · 2020

【Background】 Left ventricular aneurysms is complication of myocardial infarction (MI) that can lead to death or serious morbidity. False aneurysm is rare complications of myocardial infarction or iatrogenic perforation and represent a cont…

Exploring Promising Concepts and Critical Technologies for Offshore Methane Hydrate Development System Open

Yo Matsudaira, Ryota Wada, Yoshihiro Konno, Go Hashimoto, Ken Takagi · 2019

Natural gas production from offshore methane hydrates can increase the energy security conditions for many countries, such as Japan. Methane hydrate is an unconventional source of carbon hydrates and further research is required to achieve…

A case of recurrent transient global amnesia showing different symptom duration and MRI findings Open

Go Hashimoto, Koji Ishitsuka, Miyuki Kuwano, Juro Jinnouchi, Tetsuro Ago , et al. · 2019

A 66-year-old man was admitted to our department with anterograde amnesia. He was diagnosed with transient global amnesia (TGA) because of the symptom lasting for several hours and no abnormal findings on MRI and EEG. About a year after th…

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