Relationship between arterial PCO2 (left panel) and PO2 (right panel) and minute ventilation in normal subjects. Stimulation of ventilation occurs with a small rise in PCO2, but requires a large fall in PO2.
Adapted from: Hudgel DW. Control of breathing. In: Bronchial Asthma: Mechanisms and Therapeutics, 2d ed, Weiss EB, Segal MS, Stein M (Eds), Little, Brown, Boston, 1984, with permission.
