Publications by authors named "M Kishihara"

Chronic limb-threatening ischemia (CLTI), the severest stage of peripheral artery disease, frequently necessitates amputation. In CLTI patients, heart failure with reduced ejection fraction (HFrEF) markedly raises mortality risk, with increased peripheral vascular resistance contributing to this exacerbation. This investigation aimed to assess the impact of major amputation (MA) on the cardiovascular (CV) prognosis in CLTI patients with HFrEF by lowering peripheral vascular resistance.

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Background: Managing heart rate (HR) is crucial for enhancing clinical prognosis in patients with heart failure (HF) and atrial fibrillation (AF). Nevertheless, the prognostic impact of HR at discharge in hospitalized HF patients remains unclear.

Objectives: This study aimed to determine the HR associated with the lowest risk of death and HF in patients hospitalized with HF and AF.

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Patients with persistent heart failure (HF) with reduced ejection fraction (HFrEF) have a poorer prognosis than those with HF with improved ejection fraction (HFimpEF). However, data on the predictive value of echocardiographic parameters for persistent HFrEF are lacking. We retrospectively studied 443 patients who were diagnosed with HFrEF (EF ≤ 40%) during hospitalization and underwent echocardiography at the 1-year follow-up.

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Background: Few interventions have shown improved prognosis in patients with heart failure and preserved ejection fraction (HFpEF). Serum chloride levels, which are affected by serum renin secretion, are associated with the prognosis of HFpEF patients. However, the relationship between serum chloride levels and the effects of renin-angiotensin system inhibitors (RASi) in HFpEF patients remains unclear.

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Background: Appropriate implantable cardioverter-defibrillator (ICD) shocks are associated with an increased risk of mortality and heart failure (HF) events. The first appropriate shock may occur late after implantation. However, whether the timing of the first appropriate shock influences prognosis is unknown.

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