Figure 6. Central and Peripheral Chemoreceptor Activity in Response to Stimulation with CO₂ in the Three Patients during the Whole Testing Period.

In all three patients bCBR caused the loss of the peripheral component or reduction to a value of less than 10% of preoperative values combined with an initial sharp reduction in the magnitude of the central component to about 30% of preoperative values, which was followed by a slow increase to values 85%–95% of the preoperative values. In patient 3 we also obtained data after unilateral carotid body resection.