Abbreviations
- ACE
= Angiotensin converting enzyme
- ANS
= Adrenergic nervous system
- APJ
= Apelin receptor
- ASE
= American Society of Echocardiography
- BMI
= Body mass index
- CV
= Coefficient of variability
- EF%
= Ejection fraction
- ELISA
= Enzyme linked immunosorbent assay
- High Ap13
= Patients with apelin-13 level below the median value
- HF
= Heart failure
- IL 1β
= Interleukin 1β
- IQR
= Interquartile range
- Low Ap13
= Patients with apelin-13 level above the median value
- LV
= Left ventricle
- NT-proBNP
= N-terminal prohormone of brain natriuretic peptide
- NYHA class
= New York Heart Association class
- RAAS
= Renin-angiotensin-aldosterone system
- SD
= Standard deviation
- TNFα
= Tumor necrosis factor alpha α