80-year-old lady presented with confusion. Her Venous blood gases showed the following:

PH = 7.396

pCO2 = 52 mmHg

HCO3 = 31 mmHg

Na = 141 mmol/L

K = 3.1 mmol/L

Cl = 98 mmol/L

Hb = 129 g/L

Glucose = 9.5 mmol/L

Lactate = 2.0 mmol/L

Creatinine = 53 umol/L

Interpret these results