Respiratory acidosis causes
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Causes
Acute
- Acute respiratory acidosis occurs when an abrupt failure of ventilation occurs.
- This failure in ventilation may be caused by
- Depression of the central respiratory center by cerebral disease or drugs,
- Inability to ventilate adequately due to neuromuscular disease (eg, myasthenia gravis, amyotrophic lateral sclerosis, Guillain-Barré syndrome, muscular dystrophy),
- Airway obstruction related to asthma or chronic obstructive pulmonary disease (COPD) exacerbation.
Chronic
- Chronic respiratory acidosis may be secondary to many disorders such as
- COPD - Hypoventilation in COPD involves multiple mechanisms, including decreased responsiveness to hypoxia and hypercapnia, increased ventilation-perfusion mismatch leading to increased dead space ventilation, and decreased diaphragm function secondary to fatigue and hyperinflation.
- Obesity hypoventilation syndrome (i.e., Pickwickian syndrome), neuromuscular disorders such as amyotrophic lateral sclerosis, and severe restrictive ventilatory defects as observed in interstitial fibrosis and thoracic deformities.
- Lung diseases that primarily cause abnormality in alveolar gas exchange usually do not cause hypoventilation but tend to cause stimulation of ventilation and hypocapnia secondary to hypoxia. Hypercapnia only occurs if severe disease or respiratory muscle fatigue occurs.
Common Causes
Causes by Organ System
Causes in Alphabetical Order