Respiratory Alkalosis

Respiratory alkalosis is a condition where the lungs cause the blood to become too alkaline by removing too much carbon dioxide. This affects the respiratory system and can disrupt the body's acid-base balance, which is crucial for normal cell function. The main cause is usually rapid or deep breathing, known as hyperventilation, which can happen during anxiety, fever, or lung diseases. When carbon dioxide levels drop, the blood's pH rises above normal, leading to symptoms like dizziness, tingling in the fingers, and muscle cramps. This imbalance can affect the nervous system and heart function if severe or prolonged. Understanding this condition helps explain why breathing patterns influence overall health.

Respiratory alkalosis is a primary acid-base disorder characterized by a decrease in arterial partial pressure of carbon dioxide (PaCO2) below 35 mm Hg, resulting in an elevated blood pH above 7.45. It is caused by alveolar hyperventilation, which leads to excessive elimination of CO2 and a subsequent reduction in hydrogen ion concentration. Common etiologies include anxiety-induced hyperventilation, hypoxemia from pulmonary diseases, central nervous system disorders, and certain medications. The condition is clinically significant because it can cause compensatory metabolic changes, such as renal bicarbonate excretion, and may lead to symptoms like cerebral vasoconstriction and neuromuscular irritability. Recognition of respiratory alkalosis is important for identifying underlying causes and preventing complications related to altered oxygen delivery and electrolyte imbalances.