Predictive Properties of the Hyperventilation Provocation Test for the Diagnosis of the Hyperventilation Syndrome

"During the HPTest, the subject is comfortably seated in a chair with armrests and breathes in a mouthpiece with a salivary collector and a nasal clamp. Parameters of ventilation and gas exchange are analyzed via an Oxycon ProTM (SN808008) with TripleV-Volume Sensor digital(Jaeger).~The HPTest begins with a 3-minutes adaptation phase during which the patient is asked to breathe normally. During the 3-minutes of voluntary hyperventilation phase, the patient is asked to increase his tidal volume and support a breath rate of at least 30/min in order to reduce his PETCO2 by at least 50%. During the recovery phase of the HPTest, the patient is invited to regain a natural breathing for 5 minutes, without guidance on tidal volume or breath rate."