label: Monitor for laboratory evidence of the underlying cause for hypervolemia (e.g., B-type natriuretic peptide for heart failure; BUN, Cr, and GFR for renal failure), if available
label_lc: monitor for laboratory evidence of the underlying cause for hypervolemia (e.g., b-type natriuretic peptide for heart failure; bun, cr, and gfr for renal failure), if available