Publications by authors named "Tsujiuchi M"

Background: Long-term exercise training induces various morphological adaptations in the heart. Although concentric left ventricular (LV) geometry is occasionally observed in young athletes, its clinical significance is unclear. This study aimed to investigate the characteristics of young rugby athletes with concentric LV geometry and considered its clinical implications.

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Aims: Left atrial (LA) volume index (LAVI) in chronic heart failure (HF) predicts cardiovascular outcomes. However, the association between LAVI reduction during acute decompensated HF (ADHF) and its prognostic potential is limited. We hypothesized that LA reverse remodelling (LARR) after ADHF therapy would be associated with better clinical outcomes.

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Article Synopsis
  • Limited data exists on the cardiac structure of rugby athletes, prompting a study that examined 114 young Japanese collegiate players using echocardiography and cardiopulmonary exercise testing (CPET).
  • The findings revealed that these athletes showed larger left ventricular, atrial, and aortic dimensions compared to previous studies, with forwards and backs presenting different muscular and endurance traits.
  • Additionally, 16% displayed abnormal left ventricular geometry, with higher resting systolic blood pressure noted in those with concentric geometry, highlighting unique cardiac remodeling and potential subclinical cardiovascular risks among young athletes.
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A 54-year-old male bodybuilder who was abusing anabolic steroids developed an acute ST-segment elevation myocardial infarction after strenuous strength training. Despite optimal use of dual antiplatelet therapy, on day 4 after primary coronary stenting, the patient suffered another acute coronary event due to subacute thrombosis, potentially pre-disposed by anabolic steroid use. ().

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  • This study examined the effectiveness of cardiac rehabilitation (CR) on patients recovering from ST-segment elevation myocardial infarction (STEMI) treated with modern medical interventions.
  • Among the 145 patients reviewed, those who completed an outpatient CR program showed better outcomes, with an 88% survival rate free of major adverse cardiac and cerebrovascular events (MACCE) compared to 76% in those who did not participate in CR.
  • The findings suggest that participating in CR may significantly improve mid-term prognosis and overall health in STEMI patients, with noticeable enhancements in physical fitness metrics post-rehabilitation.
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  • This study investigates the relationship between circulating microRNAs (miRs) and cardiorespiratory fitness in patients recovering from an acute myocardial infarction (MI) through cardiopulmonary exercise testing (CPET).
  • It involved 20 patients post-MI, analyzing specific miRs (miR-181a, 181b, 181c, and miR-484) against a control group of 5 healthy individuals.
  • The findings suggest that elevated levels of miR-181c and miR-484 may serve as predictive biomarkers for fitness levels after an MI, indicating that higher expressions correlate with better exercise capacity.
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Background: Left atrial (LA) volume and left ventricular longitudinal strain (LVLS) have significant prognostic values for major cardiovascular events (MACEs). Prognostic values of LA reservoir functional indices measured by 3-dimensional (3D) speckle-tracking echocardiography (STE) were evaluated.

Methods and results: A total of 264 patients, who underwent 2-dimensional (2D) echocardiography and 3DSTE for various underlying heart diseases, were followed up to record MACE.

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Aims: Guidelines for the diagnosis and treatment of acute and chronic heart failure (HF) provided by the European Society of Cardiology state that echocardiography is recommended for the assessment of the myocardial structure and function of subjects with suspected HF including HF with reduced (HFrEF), mid-range (HFmrEF), and preserved ejection fraction (HFpEF) as class I of recommendation and level C of evidence. However, the impact of timing of echocardiography on survival for hospitalized HF patients or the prevalence of echocardiography during their stay has not yet been fully investigated. Therefore, we designed and conducted a prospective multicentre study, Optimal Timing of Echocardiography for Heart Failure Inpatients in Japanese Institutions (OPTIMAL) study, to investigate and evaluate the prevalence of echocardiography during the in-hospital stay of HF patients, and the impact of timing of echocardiography on their survival.

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Background: Acute decompensated heart failure (ADHF) is the most common cause of readmissions in the hospital. ADHF patients are associated with polypharmacy. It is a common problem among elderly patients due to frequently occurring multiple morbidities and is associated with the use of potentially inappropriate medications (PIMs).

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Background: The prognostic value of indices for left atrial volumes (LAV) and reservoir function measured by 3D speckle-tracking analysis (3DSTA) has not been determined.

Methods and results: LA maximal and minimal volume indices (LAVImax, LAVImin), and LA emptying fraction (LAEmpF) were measured via 2D echocardiography (2DE) and 3DSTA in 514 patients (62% male, mean age: 66±15 years) with various cardiovascular diseases. Two cutoff values using normal±2SD (cutoff criterion 1) and receiver-operating characteristic analysis (cutoff criterion 2) were evaluated.

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Anderson-Fabry disease is a rare X-linked lysosomal storage disease caused by α-galactosidase A (α-GalA) gene variants and characterized by a large genotypic and phenotypic spectrum. Enzyme replacement therapy (ERT) using recombinant α-GalA has been approved for > 10 years as a specific therapy for the disease. However, the long-term clinical efficacy for cardiac manifestations has been equivocal because it depends on several factors such as genotype, sex, age, and disease severity at the initiation of ERT.

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A 52-year-old woman with intermittent complete atrioventricular (AV) block detected on exercise was admitted to the hospital. Echocardiography revealed lesions on the right ventricular side of the interventricular septum and free wall of the basal inferolateral area. Gadolinium-enhanced cardiovascular magnetic resonance (CMR) imaging revealed the mass and wall thickening at the same locations with late gadolinium enhancement (LGE).

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Background: Primary percutaneous coronary intervention (PCI) is the standard treatment in patients with ST-elevation myocardial infarction (STEMI). However, some patients still develop ST re-elevation during PCI, resulting in further myocardial damage and a poor outcome. An undersized-stenting approach may prevent ST re-elevation.

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