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