#1: Dietary non-compliance - Spot urine Na/K ratio is >1 OR the 24-hour urine Na excretion is >78 mEq/day in a patient on diuretics who is not losing weight This means the patient is sensitive to diuretics but not adherent to sodium restriction.
#2: Diuretic resistance - Spot urine Na/K ratio is ≤1 OR 24-hour urinary Na excretion is <78 mEq per day in a patient on maximally tolerated diuretics who is not losing weight. This means the patient is resistant to diuretics