 [ Symptoms ] diagnosed with helicobacter pylori infection i now have constipation problems bile reflux villious athropy and stomach ulcers [ Disease ] high co2 levels can be associated with low oxygen levels and can cause acidemia which can cause temporary or permanent nerve or brain damage it can cause dizziness delirium hallucinations etc and can be as fatal as coma or death you should be under proper medical management to prevent any sudden fatal symptoms hope this helps regards