Association of potassium disorders with the mode of death and etiology in patients with chronic heart failure: the INCOR-HF study.

Observational studies suggest a U-shaped association between serum potassium (K⁺) levels and mortality in patients with chronic heart failure (CHF). However, the mode of death in patients with HF and K⁺ disorders remains speculative. To investigate the association between potassium disorders and the mode of death in patients with CHF.

Exercise training in heart failure with reduced ejection fraction and permanent atrial fibrillation: A randomized clinical trial.

Background: Heart failure (HF) associated with atrial fibrillation increases patients' physical inactivity, worsening their clinical condition and mortality. Exercise training is safe and has clear benefits in HF. However, little is known about the effects of exercise training on patients with HF with reduced ejection fraction and permanent atrial fibrillation (HFAF).

The course of patients with Chagas heart disease during episodes of decompensated heart failure.

Aims: This study aimed to analyse the clinical presentation and prognosis of patients with Chagas cardiomyopathy and decompensated heart failure (HF), as compared with other aetiologies.

Methods And Results: A prospective cohort of patients admitted with decompensated HF. We included 767 patients (63.

Worsening of heart failure by coronavirus disease 2019 is associated with high mortality.

Aims: Patients with advanced heart failure (HF) with reduced left ventricular ejection fraction (HFrEF) and concurrent coronavirus disease 2019 (COVID-19) might have a higher risk of severe events.

Methods And Results: We retrospectively studied 16 patients with advanced HFrEF who developed COVID-19 between 1 March and 29 May 2020. Follow-up lasted until 30 September.