| Variable ;Column;Definition;;;; |
| NYHA class;M;New York Heart Association classs;;;; |
| ALT o GPT (IU/L);AD;Alanine Aminotransferase or Glutamic Pyruvic Transaminase;;;; |
| AST o GOT (IU/L);AE;Aspartate Aminotransferase or Glutamyl oxaloacetic transaminase;;;; |
| HDL (mmol/L);AL;High-density lipoprotein cholesterol;;;; |
| LDL (mmol/L);AN;Low Density Lipoprotein Cholesterol;;;; |
| Pro-BNP (ng/L);AP;pro b-type natriuretic peptide;;;; |
| T3 (pg/dL);AR;Triiodothyronine;;;; |
| T4 (ng/L);AS;Thyroxine;;;; |
| TSH (mIU/L);AU;Thyroid Stimulating Hormone;;;; |
| LVEF (%);BB;Left Ventricular Ejection Fraction ;;;; |
| SDNN (ms);CK;Standard deviation of NN intervals;;;; |
| SDANN (ms);CL;Standard deviation of the average NN intervals for each 5?min segment of a 24?h HRV recording;;;; |
| RMSSD (ms);CM;Root mean square of successive RR interval differences;;;; |
| pNN50 (%);CN;Percentage of successive RR intervals that differ by more than 50?ms;;;; |
| ACE inhibitor;CZ;Angiotensin-converting enzyme inhibitors;;;; |