Decreased PCO₂ and HCO₃, and increased pH are the main symptoms of respiratory alkalosis.
- A reduction in HCO₃ reabsorption occurs as part of the renal response to pulmonary alkalosis. In some combined acid-base illnesses, the blood pH may be within the normal range. When the PCO₂ and blood HCO₃- concentration are flowing in the opposing directions, a mixed acid-base disturbance is present.
- The most common acid-base disorder is respiratory alkalosis, which can happen during a typical pregnancy and when living at a high altitude.2,20,21
- It is also the most frequent acid-base anomaly in critically ill patients, and it is a poor prognostic indicator, especially if Paco₂ is below 20 to 25 mm Hg (2.7 to 3.3 kP). It can occur as a solitary disorder or as a component of mixed disturbances.
- Acute episodes of hyperventilation that are accompanied by fear or anxiety are what define the hyperventilation syndrome.
Therefore, decreased PCO₂ and HCO₃, and increased pH needs to be checked.
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