Respiratory Acidosis

Respiratory acidosis is a condition where the lungs cannot remove enough carbon dioxide from the body, causing the blood to become too acidic. This affects the respiratory system and can disrupt the balance of chemicals in the blood. When carbon dioxide builds up, it combines with water to form acid, lowering the blood's pH. This can lead to symptoms like shortness of breath, confusion, and fatigue. The condition often results from problems that slow or weaken breathing, such as lung diseases or injuries. If untreated, the increased acidity can affect many organs and overall health.

Respiratory acidosis is a primary acid-base disorder characterized by an elevated arterial partial pressure of carbon dioxide (PaCO2) due to alveolar hypoventilation. The core pathology involves impaired ventilation leading to retention of CO2, which increases carbonic acid concentration and decreases blood pH. Common causes include chronic obstructive pulmonary disease (COPD), neuromuscular disorders, chest wall deformities, and central respiratory depression. The condition can be acute or chronic, with chronic cases showing renal compensation via increased bicarbonate retention. Clinically, it is significant because it can cause hypoxemia, altered mental status, and if severe, respiratory failure. Recognition and management are critical to prevent complications such as cardiac arrhythmias and coma.