A 27 year old female presents with weakness and lethargy.

Her blood gas shows:

pH  7.487   (7.36-7.44)

pCO2    52.8    (35-45  mmHg)

HCO3   39.9   (24 mmol/l)

BE   14.8   (-2–+2)

Hb   145  g/l

Na   142  (137-145  mmol/l)

K   2.6   (3.3-5  mmol/l)

Cl    93   (99-111  mmol/l)

Glu   5.5   (4-6  mmol/l)

Lac   1.4  (<2  mmol/l)

Describe and interpret her blood gas

What ECG changes would you expect?