The normal level of Co2 is around 23 – 29

When breathing is impaired, your lungs can’t easily move oxygen into your blood and remove carbon dioxide from your blood (gas exchange). This can cause a low oxygen level or high carbon dioxide level, or both, in your blood.

High levels of carbon dioxide may cause drowsiness and — at the most extreme levels — unconsciousness, coma, and possibly death.

some of the symptom of high co2 are:

dizziness.

drowsiness.

excessive fatigue.

headaches.

feeling disoriented.

flushing of the skin.

shortness of breath.

Other related parameter to check are the Potassium level (normal level is 3.5-5.0)and the PH level. High Co2 with high pH (more than 7.45) requires medical attention.

CPAP /BIPAP machine and giving extra oxygen may help temporarily, However, CPAP/BIPAP can’t remove the carbon dioxide that builds up in the blood of people with chronic pulmonary diseases. you may need hospitalization.