Method and apparatus for predicting work of breathing

Details Method and apparatus for predicting work of breathing Method and apparatus for predicting work of breathing

A - Human Necessities

61

B

A61B 5/08 (2006.01) A61B 10/00 (2006.01) A61M 16/00 (2006.01) A61B 5/03 (2006.01) A61B 5/083 (2006.01) A61B 5/085 (2006.01) A61B 5/087 (2006.01)

Patent

CA 2492528

A method of creating a non-invasive predictor of both physiologic and imposed patient effort from airway pressure and flow sensors attached to the patient using an adaptive mathematical model. The patient effort is commonly measured via work of breathing, power of breathing, or pressure-time product of esophageal pressure and is important for properly adjusting ventilatory support for spontaneously breathing patients. The method of calculating this non-invasive predictor is based on linear or non-linear calculations using multiple parameters derived from the above-mentioned sensors.

L'invention concerne un procédé permettant de créer un prédicteur non invasif d'efforts aussi bien physiologique qu'imposé d'un patient, à partir de la pression des voies aériennes et de capteurs de flux fixés sur le patient, au moyen d'un modèle mathématique adaptatif. L'effort du patient est mesuré en général par l'intermédiaire du travail de respiration, de la puissance de respiration ou du résultat pression-temps de la pression oesophagienne et il constitue un élément important pour régler de manière adéquate l'assistance ventilatoire des patients respirant spontanément. Le procédé de calcul de ce prédicteur non invasif est fondé sur des calculs linéaires ou non linéaires, au moyen de plusieurs paramètres dérivés des capteurs susmentionnés.

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