US Patent 7467012 Respiration parameters controlled by heart rate

Heart rate information is used at least in part to obtain one or more parameters for inducing respiration. In various implementations, respiratory parameters, such as a target breathing rate or a target tidal volume may be delivered by an implantable device to a patient during periods of altered respiration, such as sleep apnea or exercise. A respiratory parameter may also be obtained from a physiological variable, a patient's physical activity level, or metabolic demands.