Which respiratory pattern is classically associated with diabetic ketoacidosis?

Which respiratory pattern is classically associated with diabetic ketoacidosis?

• A. Bradypnea
• B. Kussmaul respirations
• C. Apneustic breathing
• D. Cheyne-Stokes respirations

Answer: (B)

Metabolic acidosis from diabetic ketoacidosis triggers a rapid, deep, labored breathing pattern as the body tries to blow off CO2 and restore pH. This compensatory hyperventilation, where breaths are deep and regular rather than shallow, is known as Kussmaul respiration. It reflects the act of lowering PaCO2 to counteract the low pH caused by ketoacids, aligning with the idea that ventilation increases to compensate for metabolic acidosis. Other patterns don’t fit this scenario: slow breathing would worsen acidosis, Cheyne-Stokes shows cyclical crescent-decrescent breathing with periods of apnea, and apneustic breathing involves prolonged inspiratory pauses due to brainstem issues. The key clue in DKA is the deep, steady, rapid breathing of Kussmaul respiration.

Metabolic acidosis from diabetic ketoacidosis triggers a rapid, deep, labored breathing pattern as the body tries to blow off CO2 and restore pH. This compensatory hyperventilation, where breaths are deep and regular rather than shallow, is known as Kussmaul respiration. It reflects the act of lowering PaCO2 to counteract the low pH caused by ketoacids, aligning with the idea that ventilation increases to compensate for metabolic acidosis.

Other patterns don’t fit this scenario: slow breathing would worsen acidosis, Cheyne-Stokes shows cyclical crescent-decrescent breathing with periods of apnea, and apneustic breathing involves prolonged inspiratory pauses due to brainstem issues. The key clue in DKA is the deep, steady, rapid breathing of Kussmaul respiration.