Is a decrease in the pH of the blood due to elevating carbon dioxide levels in the arteries.

It is considered a “decreased ventilation process” which is different from Respiratory Alkalosis which is a hyperventilation process

There are acute and chronic causes of Respiratory Acidosis

Acute:
   -    Failure of ventilation occurs
   -    Cerebral disease or trauma
   -    Drugs
   -    Myasthenia Gravis
   -    Guillain-Barre syndrome
   -    Muscular Dystrophy
   -    Asthma
   -    Air-way obstruction
   -    Chronic obstructive pulmonary disease (COPD)

Chronic
   -    Typically a secondary reaction to other health concerns
   -    COPD
   -    Obesity hypoventilation syndrome
   -    Amyotrophic lateral sclerosis
   -    Interstitial fibrosis

Treatment
   -    Oxygen
   -    Treatment of underlining condition