If the tests are suggestive of
sleep apnea the treatment in
the form of supplemental oxygen
and drugs like acetazolamide
and theophylline against prescription are promising.
Hyperventilation can be seen in association with central apnea and Central neurogenic hyperventilation. Yes, it can also be associated with anxiety. For which you have to start relaxation exercises, hot and cold bath, enough sleep, lifestyle changes, stress management skills etc.