Publications by authors named "Daisuke Kitano"

Aim: A rapid and effective risk stratification method is highly important for the emergency care of patients with acute heart failure with preserved ejection fraction (HFpEF). Previous studies (including our own), have suggested that heart rate, age, and systolic blood pressure contribute to the pathophysiology of HFpEF. This study aimed to examine the predictive utility of the thrombolysis in myocardial infarction risk index (TRI)-consisting of heart rate, age, and systolic blood pressure-for determining the in-hospital mortality in patients with acute HFpEF.

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Aims: The safety and efficacy of drug-coated balloon angioplasty (DCBA), compared to plain old balloon angioplasty (POBA) for peripheral artery in-stent restenosis (ISR), have been examined in clinical trials. However, little is known about the pathological response after DCBA for ISR. We compared the intravascular imaging findings and tissue responses of in-stent neointima in iliac arteries after DCBA and POBA using atherosclerotic porcine peripheral arteries.

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Background: Late adverse myocardial remodeling after ST elevation myocardial infarction (STEMI) is strongly associated with cardiac death. Global Longitudinal strain (GLS) and circumferential diastolic strain rate (CDSR) derived cardiovascular magnetic resonance imaging (CMRI) is a powerful predictor of late myocardial remodeling. However, the Impella's effects on CMRI after STEMI are not fully understood.

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Background: The relationship between Body Mass Index (BMI) and acute heart failure (HF) remains ill-defined. This study aimed to compare the influence of BMI on in-hospital mortality between patients with acute HF with preserved ejection fraction (HFpEF) and those with acute HF with reduced ejection fraction (HFrEF) and to examine the specific phenotypes of HFpEF/HFrEF according to BMI.

Methods: This multicenter retrospective study included 5313 and 6332 consecutive patients with acute HFpEF and HFrEF, respectively.

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Background: The combination of antiplatelet and antithrombotic drugs increases the risk of bleeding in patients with atrial fibrillation after coronary drug-eluting stent (DES) implantation. However, the appropriateness of direct-acting oral anticoagulant (DOAC) monotherapy at the time of stent implantation remains uncertain. The objective of this study was to evaluate the safety and efficacy of DOAC monotherapy, specifically using factor Xa inhibitors such as edoxaban, in a low-density lipoprotein receptor knockout (LDL-R) miniature pig model of human-like unstable coronary plaques compared to conventional dual-antiplatelet therapy (DAPT).

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Background: Stress phase bandwidth (SPBW), assessed using single-photon emission computed tomography (SPECT), is considered to be a useful indicator of left ventricular dyssynchrony. However, few reports have examined whether it can be used as an indicator for improvement of left ventricular ejection fraction (LVEF) in new-onset heart failure with reduced ejection fraction (HFrEF).

Methods And Results: A total of 64 patients (mean age 56 years, 39 male) who were admitted to our hospital with new-onset non-ischemic HFrEF (median LVEF 24.

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Background: The absence of practice standards in vasoactive agent usage for acute decompensated heart failure has resulted in significant treatment variability across hospitals, potentially affecting patient outcomes. This study aimed to assess temporal trends and institutional differences in vasodilator and inotrope/vasopressor utilization among patients with acute decompensated heart failure, considering their clinical phenotypes.

Methods: Data were extracted from a government-funded multicenter registry covering the Tokyo metropolitan area, comprising consecutive patients hospitalized in intensive/cardiovascular care units with a primary diagnosis of acute decompensated heart failure between January 2013 and December 2021.

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  • - This study examines how data augmentation using generative adversarial networks (GANs) can enhance the prediction of dementia risk through deep neural networks (DNNs), specifically focusing on blood test and periodontal examination data.
  • - Challenges in creating accurate models include high costs, limited sample sizes, and missing data from various tests, which can hinder effective dementia risk predictions.
  • - The results showed that DNNs using GAN-synthesised data outperformed those using real data, with improved accuracy and robustness against missing information, indicating a promising avenue for better dementia risk prediction methods.
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  • The study examines the use of data augmentation techniques to enhance the prediction of dementia risk through machine learning models, specifically focusing on easily obtainable blood test results and periodontal examination data.
  • It employs advanced techniques like SMOGN, GAN, and CTGAN on datasets comprising cognitive assessments, demographics, and test results, utilizing various machine learning models for evaluation.
  • Findings indicate that while normal GANs improve data diversity, CTGANs better preserve data structure, significantly enhancing the performance of linear regression models when applied to synthesized data.
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The main cause of acute coronary syndrome (ACS) is plaque rupture and thrombus formation. However, it has not been fairly successful to identify vulnerable plaque to rupture using conventional parameters of intravascular imaging modalities. Fractal analysis is one of the mathematical models to examine geometrical features of picture image using a specific parameter called as fractal dimension (FD) which suggests geometric complexity of the image.

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  • The study focused on comparing in-hospital mortality rates between heart failure with preserved ejection fraction (HFpEF) patients who have renal dysfunction (RD) and those who do not.
  • It included 5867 patients, revealing that 68% had RD and that those patients had significantly higher in-hospital mortality.
  • Key prognostic factors for mortality varied between the two groups, with notable differences in age, blood pressure, eGFR, C-reactive protein levels, and the use of certain medications.
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  • The study examined the timing of electrical cardioversion (ECV) in patients with acute decompensated heart failure (ADHF) and atrial arrhythmias, comparing early ECV (within 8 days) to delayed ECV (9 days or more).
  • Out of 73 patients, ECV successfully restored sinus rhythm in 85%, but there was no significant difference in short-term failure rates between early and delayed ECV groups.
  • Early ECV was linked to a shorter hospital stay (14 vs. 17 days) and a notable increase in left ventricular ejection fraction (from 38% to 51%), suggesting better outcomes with earlier intervention.
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  • Diabetic cardiomyopathy is a condition where diabetes complicates heart function, occurring without high blood pressure or existing heart disease, but its prevalence is unclear due to the overlap of diabetes and hypertension.
  • A study involving over 17,000 patients with acute heart failure found that diabetic cardiomyopathy was present in 1.6% of the total group, with higher rates (5.2% and 10%) in patients with diabetes-related heart issues.
  • Patients with diabetic cardiomyopathy faced a much higher in-hospital mortality rate (7.7%) compared to those with diabetes-related heart failure who also had hypertension (2.8%), indicating a need for awareness and different management for these patients.
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Aims: Sodium-glucose co-transporter 2 (SGLT2) inhibitors have shown potential therapeutic benefits in heart failure (HF). However, data on their real-world usage and benefits in acute decompensated heart failure (ADHF) are limited.

Methods And Results: We conducted a post hoc analysis of real-world data from 1108 patients with ADHF admitted to Nihon University Itabashi Hospital (Tokyo, Japan) between 2018 and 2022.

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Background: Non-alcoholic fatty liver disease (NAFLD) and acute myocardial infarction (AMI) have common pathological links. This study investigates the prognostic impact of NAFLD assessed as hepatic steatosis (HS) by computed tomography (CT) in AMI patients and explores the mechanistic role of NAFLD in cardiovascular (CV) events using coronary angioscopy (CAS).

Methods: We retrospectively examined 342 AMI patients who underwent CT followed by primary percutaneous coronary intervention (PCI) between January 2014 and December 2019.

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  • SGLT2 inhibitors like dapagliflozin may improve outcomes for patients with acute heart failure (AHF) when started early in treatment, but the optimal timing after hospital admission is unclear.
  • A study assessed 118 AHF patients, dividing them into early (E) and late (L) groups based on when they started dapagliflozin; results showed no major differences in heart failure severity between the groups.
  • Early initiation of dapagliflozin was linked to a significantly shorter hospital stay (16.5 days for E group vs. 22 days for L group), indicating it could be a crucial factor for reducing hospitalization time.
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Nutritional factors reflect the periodontal parameters accompanying periodontal status. In this study, the associations between nutritional factors, blood biochemical items, and clinical parameters were examined in patients with systemic diseases. The study participants were 94 patients with heart disease, dyslipidemia, kidney disease, or diabetes mellitus.

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Aims: Acute decompensated heart failure (ADHF) presents with pulmonary congestion, which is caused by an increased pulmonary arterial wedge pressure (PAWP). PAWP is strongly associated with prognosis, but its quantitative evaluation is often difficult. Our prior work demonstrated that a deep learning approach based on chest radiographs can calculate estimated PAWP (ePAWP) in patients with cardiovascular disease.

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The recurrence risk evaluation has been emphasized in periodontal stabilization during supportive periodontal therapy (SPT). However, nutritional factors, e.g.

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To investigate the impact of the coronavirus disease 2019 (COVID-19) pandemic on myocardial infarctions (MIs), consecutive MI patients were retrospectively reviewed in a multi-center registry. The patient characteristics and 180-day mortality for both ST-segment elevation myocardial infarctions (STEMIs) and non-STEMIs (NSTEMIs) in the after-pandemic period (7 April 2020-6 April 2021) were compared to the pre-pandemic period (7 April 2019-6 April 2020). Inpatients with MIs, STEMIs, and NSTEMIs decreased by 9.

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We report an autopsy case of a 69-year-old female with cervical cancer. She was given bevacizumab-containing chemotherapy for 4 months. After two years of chemotherapy, she developed congestive heart failure (CHF) with left ventricular dysfunction.

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  • The study investigates the prognostic value of the MELD-XI scoring system in patients with acute decompensated heart failure (ADHF), focusing on changes in scores during hospitalization.
  • It categorized 536 patients based on their MELD-XI scores at admission and discharge into four groups: persistently normal, high-to-normal, normal-to-high, and persistently high, with the latter group facing the worst outcomes.
  • The results showed that patients with persistently high MELD-XI scores had a significantly higher rate of death or rehospitalization compared to the other groups, indicating the score's usefulness in predicting patient outcomes.
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Aims: Evidence on the association between ambient temperature and the onset of acute heart failure (AHF) is scarce and mixed. We sought to investigate the incidence of AHF admissions based on ambient temperature change, with particular interest in detecting the difference between AHF with preserved (HFpEF), mildly reduced (HFmrEF), and reduced ejection fraction (HFrEF).

Methods And Results: Individualized AHF admission data from January 2015 to December 2016 were obtained from a multicentre registry (Tokyo CCU Network Database).

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Background: The clinical efficacy of the Impella for high-risk percutaneous coronary intervention (PCI) and cardiogenic shock remains under debate. We thus sought to investigate the protective effects on the heart with the Impella's early use pre-PCI using cardiac magnetic resonance imaging (CMRI).

Methods: We retrospectively evaluated the difference in the subacute phase CMR imaging results (19 ± 9 days after admission) between patients undergoing an Impella (n = 7) or not (non-Impella group: n = 18 [12 intra-aortic balloon pumps (1 plus veno-arterial extracorporeal membrane oxygenation) and 6 no mechanical circulation systems]) in broad anterior ST-elevation myocardial infarction (STEMI) cases.

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