Dr. Creed: Here's how bronchodilators treat hypercapnea

Sympathomimetic medicine, once inhaled, lands on beta 2 adrenergic receptors, thus causing the bronchial muscles they are attached to to relax.  This causes dilation of these muscles, thus allows the patient to take in a deeper breath.  This deeper breaths allows for increased ventilation, thus increased exhalation of CO2 molecules.

That's what has been known since the 1st meeting of the Real Doctor's Creed Association of America in 1960.  Since that time it has been learned that sympathomimetic medicine also has the ability to get down into the alveoli, cross the alveolar-capillary threshold, and attach to CO2 molecules carried by hemoglobin molecules.  The new molecule that is formed is called GPSuterol.  The molecule is now super smart, and roams the blood stream looking for a well ventilated area of the lung, where it crosses the alveolar-capillary membrane to be exhaled.

There have been no scientific studies to prove that this is true, but it sounds so good it has to be.

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