Publications by authors named "Takayuki Hori"
Pericardial effusion (PE) presentation varies from an incidental finding to a life-threatening situation; thus, its etiology and clinical course remain unknown. The aim of the present study was to retrospectively investigate these factors.We analyzed 171 patients (0.
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- A study examined the effectiveness of convolutional neural networks (CNNs) integrated with electrocardiograms (ECGs) for identifying hypertrophic cardiomyopathy (HCM) and dilated HCM (dHCM) in a large patient dataset (19,170 total, with 140 HCM/dHCM cases).
- The analysis focused on two diagnostic models—one for overall disease detection and another that considered different disease subtypes—showing that while overall sensitivity started at 76%, it reached 100% when specific conditions were met (diagnostic probability ≥ 0.9 and left ventricular hypertrophy present).
- The research concluded that while initial detection rates of HCM or dHCM using CNNs in
Article Synopsis
- * The CNN model achieved a high area under the curve (AUC) score of 0.936 for AD detection with eight-lead ECGs but had a low overall positive predictive rate (PPR) of 7%. However, the PPR improved significantly to 35% for patients with high D-dimer levels and a history of hypertension.
- * The single-lead V1 ECG also demonstrated strong performance, with an A
Article Synopsis
- - We created a convolutional neural network (CNN) to detect atrial fibrillation (AF) using sinus rhythm ECGs (SR-ECG), analyzing data from 616 AF cases and 3,412 sinus rhythm cases among over 19,000 patients.
- - The CNN model showed strong performance with an area under the curve (AUC) of 0.872 for detecting AF with eight-lead ECGs, indicating high accuracy in distinguishing AF from sinus rhythm.
- - Notably, the double-lead ECG using leads I and V1 had a similar AUC of 0.871, suggesting that this simpler approach could be a viable alternative for AF screening in clinical settings.
Article Synopsis
- The study aimed to create an AI model for detecting the dilated phase of hypertrophic cardiomyopathy (dHCM) using digital electrocardiograms (ECGs).
- It utilized a retrospective analysis of 17,378 ECGs from a database, identifying 54 dHCM patients and evaluating the model's effectiveness with different lead configurations (eight-lead, single-lead, and double-lead).
- The results showed high accuracy, with the single-lead V5 ECG performing almost as well as the eight-lead ECG, suggesting it as a viable option for dHCM screening.
Background: Cardiac papillary fibroelastoma (PFE) is a rare tumor, and especially rare when found on the pulmonary valve.
Case Presentation: We report the case of a 70-year-old woman patient with a pulmonary valve PFE diagnosed incidentally during a follow-up of aortic regurgitation. Computed tomography and magnetic resonance imaging showed no suggestive signs of malignant tumors, and thrombus or myxoma was initially suspected.
Background: Fulminant myocarditis (FM) is a form of severe inflammatory carditis with rapidly developing acute heart failure.
Case Presentation: We report three cases of successful intensive treatment by Impella of FM without any complications. In all cases, impairment of microcirculation as measured by blood lactate level and the hemodynamic value as indicated by cardiac index were improved within 24-48 h and 7 days after Impella implantation, respectively.
Total arch debranching and thoracic endovascular repair of an aortic arch aneurysm with a left aberrant vertebral artery are rare procedures. A small artery is difficult to reconstruct and anastomose in a narrow thoracic space with a large aneurysm. We describe an 85-year-old man with a fusiform aortic arch aneurysm and left aberrant vertebral artery who underwent a hybrid procedure with reconstruction of the left aberrant vertebral artery at a surgical site in the neck.
View Article and Find Full Text PDFThe purpose of this study was to create novel urate under-excretion animal models using pyrazinamide and to evaluate whether dihydropyridine calcium channel blockers (CCBs) have uricosuric effects in vivo. Adult male ICR mice were treated with pyrazinamide, vehicle (dimethyl sulfoxide: DMSO), or tap water. Thirty minutes later, pyrazinamide-treated mice were given benzbromarone, losartan, nilvadipine, nitrendipine, nifedipine or azelnidipine.
View Article and Find Full Text PDFObjective: The objective of this study was to determine the effects of a continuous infusion of low-dose hANP on the lungs during cardiac surgery in patients under cardiopulmonary bypass (CPB).
Methods: We analyzed 30 consecutive cases of cardiac surgery performed at our hospital from 2007-2008. The patients were divided into a group that received hANP (hANP group) or a group that received saline and no hANP (N-hANP group).
Pectus excavatum is generally an isolated abnormality of the chest wall. However, some patients have a concomitant pectus deformity and cardiac & aortic disease. Decisions must be made regarding the operative approach and whether the pectus excavatum should be corrected during the same session.
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