As can be seen from Table 1, all patients had hypokalemia (average value 2.66±0.50 mmol/L), lower-than-normal serum chloride concentration (average value 88.0±8.9 mmol/L), metabolic alkalosis (average value of CO2CP 37.5±7.6 mmol/L), and elevated basal renin activity. Here, REN is linked to Hypokalemia.