Kussmaul breathing

Overview

Diagram of breathing abnormalities, including Kussmaul breathing

Kussmaul breathing is a type of deep and labored breathing pattern often associated with severe metabolic acidosis, particularly diabetic ketoacidosis (DKA) but also kidney failure. It is a form of hyperventilation, which is any breathing pattern that reduces carbon dioxide in the blood due to increased rate or depth of respiration.

History

Kussmaul breathing is named after the German doctor Adolf Kussmaul, who first described the phenomenon in 1874. He observed this type of breathing in patients with diabetes mellitus who were in a state of ketoacidosis.

Pathophysiology

Kussmaul breathing is a compensatory mechanism for metabolic acidosis. In conditions such as diabetic ketoacidosis, the body produces excess ketone bodies, leading to a decrease in blood pH. The respiratory system compensates by increasing the rate and depth of breathing to expel more carbon dioxide, which is acidic, thereby helping to raise the blood pH back towards normal.

Clinical Presentation

Patients exhibiting Kussmaul breathing will have a noticeable increase in the depth and rate of their breathing. This is often described as "air hunger". Unlike other forms of dyspnea, Kussmaul breathing is not associated with a feeling of breathlessness, but rather a physiological response to acidosis.

Differential Diagnosis

Kussmaul breathing should be differentiated from other types of abnormal breathing patterns such as:

• Cheyne-Stokes respiration
• Biot's respiration
• Apneustic breathing

Management

The primary treatment for Kussmaul breathing is to address the underlying cause of the metabolic acidosis. In the case of diabetic ketoacidosis, this involves the administration of insulin and fluids. In cases of renal failure, dialysis may be necessary.

Related Pages

• Diabetic ketoacidosis
• Metabolic acidosis
• Respiratory compensation
• Adolf Kussmaul