Apnea/hypopnea detection system and method

Details Apnea/hypopnea detection system and method Apnea/hypopnea detection system and method

A - Human Necessities

61

B

A61B 5/08 (2006.01)

Patent

CA 2533760

An apnea/hypopnea detection system (30) and method that monitors a patient's respiratory flow, determines (a) a long term RMS energy based on the flow, (b) a long term threshold determined based on the long term RMS energy, and (c) a short term RMS energy based on the flow. Determining whether the patient is experiencing an apnea/hypopnea is accomplished by comparing the short term RMS energy with the long term threshold. This A/H detection technique is useful in diagnosing a patient for a breathing disorder, such as OSA, and/or for controlling an auto-titration pressure support system.

L'invention porte sur un système de détection de l'apnée/hypopnée (30) surveillant le flux respiratoire du patient et déterminant: (a) la valeur quadratique moyenne (RMS) à long terme de l'énergie, basée sur le flux; (b) le seuil à long terme de ladite valeur; et (c) la valeur quadratique moyenne à court terme de l'énergie, basée sur le flux. On détermine si le patient est en apnée/hypopnée en comparant la RMS à court terme au seuil à long terme. Cette technique de détection permet de diagnostiquer les troubles respiratoires d'un patient tels que l'apnée obstructive et/ou à réguler le système de titrage automatique de la pression.

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