Guo says that hospitals used to treat the condition by having sufferers breathe into a bag. CO2 would collect in the bag and be inhaled again. But Guo says that abdominal breathing also causes rapid slowing of the respiration rate.
郭育祥指出，過去醫院以「口鼻套袋」方式（把二氧化碳留在袋中，讓患者再吸回去）來治療過度換氣症候群，其實只要施行腹式呼吸，病人很快就可以緩和下來。