In metabolic acidosis, what respiratory pattern is typically observed as compensation?

In metabolic acidosis, what respiratory pattern is typically observed as compensation?

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

Answer: (A)

Metabolic acidosis lowers pH, so the body tries to compensate by increasing ventilation to blow off CO2, which helps shift the carbonic acid balance toward less hydrogen ion concentration. This results in a pattern of very deep, rapid breathing known as Kussmaul respiration. It’s the classic compensatory response because it directly reduces arterial CO2 and helps raise pH toward normal. Other breathing patterns don’t reflect this CO2 blow-off response: Cheyne-Stokes involves cyclic breathing with periods of apnea, apneustic breathing features prolonged inspiration, and Bradypnea is slow, shallow breathing.

Metabolic acidosis lowers pH, so the body tries to compensate by increasing ventilation to blow off CO2, which helps shift the carbonic acid balance toward less hydrogen ion concentration. This results in a pattern of very deep, rapid breathing known as Kussmaul respiration. It’s the classic compensatory response because it directly reduces arterial CO2 and helps raise pH toward normal. Other breathing patterns don’t reflect this CO2 blow-off response: Cheyne-Stokes involves cyclic breathing with periods of apnea, apneustic breathing features prolonged inspiration, and Bradypnea is slow, shallow breathing.