Twitch mouth pressure for detecting respiratory muscle weakness in suspicion of neuromuscular disorder

Autor: Gilbert Desmarais, Frédéric Lofaso, Dante Brasil Santos, Sandrine Cognet, Bruno Louis, L. Falaize, Hélène Prigent, Adam Ogna, David Orlikowski
Rok vydání: 2017
Předmět:
Zdroj: Neuromuscular Disorders. 27:518-525
ISSN: 0960-8966
DOI: 10.1016/j.nmd.2017.01.022
Popis: Twitch mouth pressure using magnetic stimulation of the phrenic nerves and an automated inspiratory trigger is a noninvasive, non-volitional assessment of diaphragmatic strength. Our aims were to validate this method in patients with suspected neuromuscular disease, to determine the best inspiratory-trigger pressure threshold, and to evaluate whether twitch mouth pressure decreased the overdiagnosis of muscle weakness frequently observed with noninvasive volitional tests. Maximal inspiratory pressure, sniff nasal pressure, and twitch mouth pressure were measured in 112 patients with restrictive disease and suspected neuromuscular disorder. Esophageal and transdiaphragmatic pressures were measured in 64 of these patients to confirm or infirm inspiratory muscle weakness. Magnetic stimulation was triggered by inspiratory pressures of −1 and −5 cmH2O. The −5 cmH2O trigger produced the best correlation between twitch mouth pressure and twitch esophageal pressure (R2 = 0.86; P
Databáze: OpenAIRE