Nahoko Kato

ORCID: 0000-0003-0892-4366
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About
Contact & Profiles
Research Areas
  • Cardiac Valve Diseases and Treatments
  • Infective Endocarditis Diagnosis and Management
  • Cardiovascular Function and Risk Factors
  • Cardiac Imaging and Diagnostics
  • Cardiac Structural Anomalies and Repair
  • Atrial Fibrillation Management and Outcomes
  • Cardiovascular and Diving-Related Complications
  • Cardiac tumors and thrombi
  • Congenital Heart Disease Studies
  • Ocular Surface and Contact Lens
  • Cardiac Arrhythmias and Treatments
  • Phonocardiography and Auscultation Techniques
  • Aortic Disease and Treatment Approaches
  • ECG Monitoring and Analysis
  • Cardiac pacing and defibrillation studies
  • Coronary Interventions and Diagnostics
  • Vascular anomalies and interventions
  • Retinal and Optic Conditions
  • Facial Rejuvenation and Surgery Techniques
  • Oil and Gas Production Techniques
  • Pulmonary Hypertension Research and Treatments
  • Heart Failure Treatment and Management
  • Heart Rate Variability and Autonomic Control
  • Systemic Lupus Erythematosus Research
  • Intraocular Surgery and Lenses

Mayo Clinic
2019-2023

Mayo Clinic in Arizona
2019-2022

Aichi Medical University
2015-2021

Mayo Clinic in Florida
2019-2020

Mayo Clinic Hospital
2020

Tokyo Medical and Dental University
2017-2019

Mitsui Memorial Hospital
2015

Importance The characteristics and treatment strategies of atrial functional mitral regurgitation (AFMR) are poorly understood. Objective To investigate the prevalence, clinical characteristics, outcomes valve (MV) surgery in AFMR. Design, Setting, Participants This retrospective cohort study, called Real-World Observational Study for Investigating Prevalence Therapeutic Options Atrial Functional Mitral Regurgitation (REVEAL-AFMR), was conducted across 26 Japanese centers (17 university...

10.1001/jamanetworkopen.2024.28032 article EN cc-by-nc-nd JAMA Network Open 2024-08-15

Abstract We sought to validate the ability of a novel handheld ultrasound device with an artificial intelligence program (AI-POCUS) that automatically assesses left ventricular ejection fraction (LVEF). AI-POCUS was used prospectively scan 200 patients in two Japanese hospitals. Automatic LVEF by compared standard biplane disk method using high-end machines. After excluding 18 due infeasible images for AI-POCUS, 182 (63 ± 15 years old, 21% female) were analyzed. The intraclass correlation...

10.1038/s41598-024-65557-5 article EN cc-by Scientific Reports 2024-07-04

Mitral stenosis frequently coexists in patients with severe aortic stenosis. severity evaluation is challenging the setting of combined and mitral because hemodynamic interactions between 2 valve lesions. The impact replacement (AVR) for on unknown. This study aimed to assess effect AVR hemodynamics clinical outcomes without stenosis.We retrospectively investigated who underwent surgical or transcatheter from 2008 2015. Mean transmitral gradient by Doppler echocardiography ≥4 mm Hg was...

10.1161/circulationaha.119.040679 article EN Circulation 2019-10-07

To compare all-cause mortality in patients with mitral annulus calcification (MAC) and severe valve dysfunction (MVD) who received standard intervention versus no intervention.Patients MAC often have high surgical risk due to advanced age, comorbidities, technical challenges related calcium. The impact of a on outcomes MVD is not well known.Retrospective review by transthoracic echocardiography (TTE) 2015 at single institution. Patients stenosis (MS) or regurgitation (MR) were analyzed...

10.1002/ccd.30093 article EN Catheterization and Cardiovascular Interventions 2022-01-23

Objectives The clinical outcomes of transcatheter aortic valve replacement (TAVR) in patients with stenosis (AS) and concomitant active cancer remain insufficiently explored. This study aimed to assess the midterm TAVR diagnosed AS cancer. Methods Data from OCEAN-TAVI, a prospective Japanese registry procedures, was analysed compare prognoses without at time TAVR. Results Of 2336 who underwent October 2013 July 2017, 89 (3.8%) had cancer, whereas 2247 did not. Among 49 limited-stage (stage 1...

10.1136/openhrt-2023-002573 article EN cc-by-nc Open Heart 2024-02-01

Mitral stenosis (MS) occasionally coexists with aortic (AS). Limited data are available regarding the functional class and clinical outcomes of patients who undergo transcatheter valve implantation (TAVI) for combined AS MS. This study compared in without MS underwent TAVI severe assessed impact mitral annulus calcification (MAC) severity, transmitral gradient (TMG) area (MVA) on

10.1002/ehf2.15030 article EN cc-by-nc ESC Heart Failure 2024-08-21

Heart failure should be diagnosed as early possible. Although deep learning models can predict one or more echocardiographic findings from electrocardiograms (ECGs), such analyses are not comprehensive. This study aimed to develop a model for comprehensive prediction of ECGs. We obtained 229,439 paired ECG and echocardiography data sets 8 centers. Six centers contributed development 2 external validation. identified 12 related left-sided cardiac abnormalities, valvular heart diseases,...

10.1016/j.jacasi.2024.10.012 article EN cc-by-nc-nd JACC Asia 2024-12-10

Key Clinical Message Familial cryptogenic stroke associated with atrial septal defect and patent foramen ovale is rare. The presence of a family history may lead to the requirement for careful follow‐up younger members.

10.1002/ccr3.8846 article EN cc-by-nc-nd Clinical Case Reports 2024-04-26

Concurrent mitral regurgitation (MR) influences treatment considerations in patients with severe aortic stenosis (sAS). Limited information exists regarding haemodynamic effects of sAS on MR severity and outcome these patients. We assessed the impact valve replacement (AVR) according to mechanism MR.

10.1002/ehf2.13649 article EN ESC Heart Failure 2021-10-15

Abstract Background At present, there is no standard of treatment using systemic high-dose corticosteroids in cases pregnant women with Vogt-Koyanagi-Harada (VKH) disease. Although corticosteroid often used for VKH disease during pregnancy, it also poses a risk to the fetus. Findings A 29-year-old woman 34th week pregnancy experienced bilateral metamorphopsia. She had been receiving 5 mg prednisolone daily past 8 years as rheumatoid arthritis. In order prevent progression serous retinal...

10.1186/s12348-015-0050-3 article EN cc-by Journal of Ophthalmic Inflammation and Infection 2015-06-26

Ptosis incidence following cataract surgery is reduced with a recently developed phacoemulsification technique using small incision. However, it remains uncertain whether an upper transconjunctival sclerocorneal incision can cause minor blepharoptosis. In the present prospective study, patients underwent either or temporal 2.4-mm We measured marginal reflex distance 1 (MRD1) preoperatively and postoperatively, compared these measurements between two different types. Further we explored risk...

10.1186/s12886-016-0286-1 article EN cc-by BMC Ophthalmology 2016-07-07

10.1016/j.jcin.2024.01.312 article EN publisher-specific-oa КАРДИОЛОГИЯ УЗБЕКИСТАНА 2024-03-20

Delayed diagnosis of pulmonary hypertension (PH) is a known cause poor patient prognosis. We aimed to develop an artificial intelligence (AI) model, using ensemble learning method detect PH electrocardiography (ECG), chest X-ray (CXR), and brain natriuretic peptide (BNP), facilitating accurate detection prompting further examinations. developed convolutional neural network model ECG data predict PH, labelled by from seven institutions. Logistic regression was used for the BNP prediction...

10.1093/ehjdh/ztae097 article EN cc-by-nc European Heart Journal - Digital Health 2024-12-18

The generalization of deep neural network algorithms to a broader population is an important challenge in the medical field. We aimed apply self-supervised learning using masked autoencoders (MAEs) improve performance 12-lead electrocardiography (ECG) analysis model limited ECG data. pretrained Vision Transformer (ViT) models by reconstructing data with MAE. fine-tuned this MAE-based on ECG-echocardiography from University Tokyo Hospital (UTokyo) for detection left ventricular systolic...

10.1371/journal.pone.0307978 article EN cc-by PLoS ONE 2024-08-14

Abstract Background Atrial functional mitral regurgitation (AFMR) is caused by annular enlargement following left atrium (LA) because of atrial fibrillation and/or heart failure with preserved ejection fraction. However, the distribution and clinical impact LA size are unknown. Purpose To assess volume index (LAVI) on outcomes in patients AFMR. Methods We investigated ≥moderate AFMR from REVEAL-AFMR registry. Patients aortic valve diseases missing LAVI were excluded. The primary endpoint was...

10.1093/eurheartj/ehae666.1913 article EN European Heart Journal 2024-10-01

Abstract Background There is a paucity of data about the prevalence and natural history mitral annular calcification (MAC). Purposes In large cohort patients undergoing clinically-indicated echocardiography, we aimed to evaluate MAC, frequency associated valve dysfunction (MVD). Methods Retrospective review all who underwent echocardiographic evaluation at our institution between January 1st December 31st 2015. The were stratified into 3 groups: MAC with MVD, without no MAC. MVD was defined...

10.1093/ehjci/ehaa946.2010 article EN European Heart Journal 2020-11-01
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