Common Causes and Clinical Features of Respiratory Alkalosis

In this article, we will discuss Common Causes and Clinical Features of Respiratory Alkalosis. So, let’s get started.


  • Hypoxia due to acute attack of bronchial asthma, pulmonary edema, pulmonary embolism, and acute circulatory failure. Chronic hypoxia occur in cyanotic heart disease, high altitude, and pulmonary fibrosis
  • CNS disorders (e.g. CVA, brain tumor, encephalitis)
  • Pregnancy
  • Gram-negative septicemia or endotoxemia
  • Hepatic failure
  • Drugs, e.g. salicylate and xanthine poisoning
  • Anxiety induced hyperventilation
  • Pain
  • Excessive mechanical ventilation

Clinical Features

They are due to hyperventilation and hypoxemia. Paraesthesias, circumoral numbness, chest wall tightness or pain, light-headedness, dizziness, inability to take an adequate breath and rarely tetany or convulsions may occur. In digitalised patients, cardiac arrhythmias and cardiac arrest may occur.

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