Hirooki Higami
A5032838797- Coronary Interventions and Diagnostics
- Cardiac Valve Diseases and Treatments
- Cardiac Imaging and Diagnostics
- Aortic aneurysm repair treatments
- Aortic Disease and Treatment Approaches
- Atrial Fibrillation Management and Outcomes
- Peripheral Artery Disease Management
- Coronary Artery Anomalies
- Antiplatelet Therapy and Cardiovascular Diseases
- Cardiac Arrhythmias and Treatments
- Acute Myocardial Infarction Research
- Vascular Procedures and Complications
- Cardiac tumors and thrombi
- Infectious Aortic and Vascular Conditions
- Cardiovascular Function and Risk Factors
- Cardiac, Anesthesia and Surgical Outcomes
- Cardiac pacing and defibrillation studies
- Infective Endocarditis Diagnosis and Management
- Cardiac Structural Anomalies and Repair
- Advancements in Photolithography Techniques
- Renal and Vascular Pathologies
- Innovation Policy and R&D
- Viral Infections and Immunology Research
- Abdominal vascular conditions and treatments
- Anatomy and Medical Technology
Gifu Heart Center
2023-2025
Otsu Red Cross Hospital
2016-2024
Yamagata University
2024
Japanese Circulation Society
2023
Society for Vascular Surgery
2023
Kyoto University
2013-2021
Shizuoka General Hospital
2016
Kokura Memorial Hospital
2016
Hyogo Medical University
2016
Tenri Hospital
2016
BackgroundThoracic endovascular aortic repair (TEVAR) for thoracic aneurysms (TAAs) is in rapid expansion due to its minimal invasiveness. However, TEVAR an arch aneurysm with a straight stent graft needs surgical reconstruction supra-aortic vessels. A branched pioneered by Inoue (branched Stent Graft [ISG]) has been expected resolve this problem, but utility remains be established the real clinical setting. This study evaluated long-term outcome of ISGs TAAs.MethodsAmong 217 consecutive...
Two elderly patients were scheduled for percutaneous coronary intervention (PCI) after implantation of a supra-annular self-expandable transcatheter heart valve (SE-THV). In both cases, computed tomography) identified that the commissure post SE-THV rests in front target arteries. Screening using virtual reality system enabled fusion tomography images and suggested possible frames SE-THV. We also created novel Evo-MAP judged appropriateness frame considering position leaflets skirt. The...
Abstract Prognostic impact of anemia complicating severe aortic stenosis (AS) remains unclear. We assessed the on cardiovascular and bleeding outcomes in 3403 patients enrolled CURRENT AS registry. 835 (25%) had mild (hemoglobin 11.0–12.9 g/dl for men/11.0–11.9 women) 1282 (38%) moderate/severe (Hb ≤ 10.9 g/dl) at diagnosis AS. Mild were associated with significantly increased risks relative to no ≥13.0 men/≥12.0 primary outcome measure (aortic valve-related death or heart failure...
ABSTRACT We present a novel, simple, and low‐cost “side‐hole” technique for patient with ST‐segment elevation myocardial infarction (STEMI) caused by an occlusion of anomalous origin the culprit coronary artery (AOCCA). In case where standard guiding catheters failed to engage left (LCA), we created approximately 3 mm side‐hole near tip 5 Fr diagnostic catheter then introduced guidewire microcatheter directly into main trunk (LMT). Subsequently, withdrew this exchanged it over guide wire,...
Abstract Background In direct aortic transcatheter valve implantation for patients with stenosis, anterior right mini-thoracotomy presents challenges due to the limited visual field and raises concerns about significant bleeding. Furthermore, identifying site closest ascending aorta while maintaining an adequate distance from annulus is challenging. We report on effectiveness of our preoperative simulation using virtual reality technology ensure a safe precise via in two patients. Case...
Although conventional open repair is our preference for patients with aortic arch aneurysms, we have often chosen thoracic endovascular aneurysm (TEVAR) a handmade branched stent graft (bTEVAR) in high-risk patients. The aim of this study was to compare the midterm clinical outcomes bTEVAR technique those repair. Between January 2007 and December 2014, treated 129 by means either (OPEN, n = 61) or (n 68) at institution. mean ages were 70.5 ± 12.7 years OPEN group 72.7 12.5 (P 0.32)....
The functional impact of downstream coronary stenoses on left main artery (LMCA) stenosis has not been fully elucidated. This study therefore aimed to use in vitro and vivo experiments assess two novel equations that predict the true fractional flow reserve (FFR) a with concomitant stenoses.Two were derived. One equation predicts an LMCA (Equation A), other FFR both anterior descending circumflex arteries B). validated models circulation. agreements between apparent (FFRapp), predicted...
Abstract Background Engagement of the guiding catheter (GC) for coronary artery is sometimes difficult, depending on patient’s anatomy. The most suitable GC before percutaneous intervention (PCI) in individual cases has not been determined yet. Case summary An 81-year-old woman who had a right chronic total occlusion difficulty to engage first examination. Virtual reality (VR)-guided simulation PCI using cardiac computed tomography (CT) could overcome engagement and achieve procedure...
Background Data are scarce on the role of aortic valve area (AVA) to identify those patients with asymptomatic severe stenosis (AS) who at high risk adverse events. We sought explore prognostic impact AVA in AS a large observational database. Methods and Results Among 3815 consecutive enrolled CURRENT (Contemporary Outcomes After Surgery Medical Treatment Patients With Severe Aortic Stenosis) registry, present study included 1309 conservatively managed left ventricular ejection fraction...
We report two cases of successful percutaneous coronary intervention (PCI) a chronic total occlusion (CTO) lesion with an anomalous origin the right artery (AORCA) and challenging guiding catheter engagement using new 3D virtual reality (VR) simulation system. Appropriate selection is critical for complex PCI. A more suitable size, shape, position robust backup force often leads to completion accessible safer procedures. The present case highlights that VR provides greater possibility than...
It is still uncertain whether the final kissing balloon technique (FKBT) mandatory after crossover stenting for left main coronary artery (LMCA). Assessing Optimal Percutaneous Coronary Intervention LMCA (AOI-LMCA) registry, a 6-center retrospective enrolled 1809 consecutive patients in Japan. In present analysis, 5-year clinical outcomes were compared between non-FKBT (n = 160) and FKBT 578) groups treated with drug-eluting stents from to anterior descending artery. Propensity score-matched...
There are limited data regarding the risk stratification based on peak aortic jet velocity (Vmax) in patients with severe stenosis (AS).Among 3815 consecutive AS enrolled CURRENT (Contemporary Outcomes After Surgery and Medical Treatment Patients With Severe Aortic Stenosis) registry, study population consisted of 1075 conservatively managed Vmax ≥4.0 m/s left ventricular ejection fraction ≥50%. The were subdivided into 3 groups (group 1, 4.0 ≤ <4.5 m/s, N=550; group 2, 4.5 <5 N=279; 3, ≥5...
Data on the clinical outcomes of percutaneous coronary intervention (PCI) for unprotected left main artery (LMCA) in patients with acute syndrome (ACS) are limited. Therefore, this study aimed to assess outcome ACS who underwent PCI LMCA culprit lesion.
The Direct Oral Anticoagulant (DOAC) Score can predict bleeding risk in patients with atrial fibrillation taking DOACs; however, it lacks external validation. Therefore, this study aimed to assess the association between DOAC and events who underwent transcatheter aortic valve replacement.
It is unknown how much different are the clinical outcomes between asymptomatic and symptomatic patients with severe aortic stenosis (AS). In CURRENT AS registry enrolling 3,815 consecutive AS, we compared long-term 1808 1215 (exertional dyspnea: N = 813, syncope: 136, angina: 266) without heart failure (HF) hospitalization. Symptomatic had greater severity, more depressed left ventricular function than difference in other baseline characteristics. During a median follow-up of 3.2 years,...
Abstract Background We previously reported a case of successful percutaneous left atrial appendage closure (LAAC) for complex (LAA) morphology using handmade double-curve delivery sheath (DS) reshaped by heat gun. However, whether the curve was appropriately adjusted as an optimal configuration this patient’s anatomy remained uncertain. Case summary established LAAC procedural simulation model supported virtual reality (VR) technology. With VR simulator, whole heart with venous access route...
Background Stent thrombosis (ST) after drug‐eluting stent (DES) implantation remains a life‐threatening complication. Recurrent ST (RST) is not rare phenomenon, potentially contributing to high mortality the index events. However, little evidence available about incidence, risk factors, and clinical outcomes of definite RST DES thrombosis. Methods Results From REAL‐ST (Retrospective Multicenter Registry After First‐ Second‐ Generation Implantation), this study evaluated 595 patients with...