Index for evaluating left ventricular filling pressure Electrocardiography/electrocardiogram Estimated glomerular filtration rate Heart failure Heart failure with reduced ejection fraction Heart failure with mildly reduced ejection fraction Heart failure with preserved ejection fraction Isovolumetric relaxation time Intensive care unit Intravenous Left atrium Low molecular weight heparin Left ventricular end diastolic volume Left ventricular end systolic volume Left ventricular ejection fraction Left atrial volume index Left ventricular hypertrophy Mineralocorticoid receptor antagonist N-terminal prohormone brain natriuretic peptide Third heart sound Stroke volume Sinus rhythm Peripheral capillary oxygen saturation Sodium glucose co-transporter 2 inhibitor