Normal Reference Ranges
Adult
35 - 45 mmHg
Pediatric
35 - 45 mmHg
Clinical Significance
Respiratory component of acid-base balance. Directly reflects alveolar ventilation.
Causes of High
- Hypoventilation (Opioids, COPD, Neuromuscular weakness)
- Compensation for metabolic alkalosis
Causes of Low
- Hyperventilation (Anxiety, Sepsis, Hypoxia, Salicylates)
- Compensation for metabolic acidosis