Abnormal pattern of respiration Hyperventilation true Hyperventilation refers to an increased pulmonary ventilation rate that is faster than necessary for the exchange of gases. Hyperventilation can result from increased frequency of breathing, an increased tidal volume, or both, and leads to an excess intake of oxygen and the blowing off of carbon dioxide. HP:0002883 Rapid breathing UMLS:C0020578 SNOMEDCT_US:68978004