Diaphragm function and weaning from mechanical ventilation: an ultrasound and phrenic nerve stimulation clinical study - Neurophysiologie Respiratoire Expérimentale et Clinique Accéder directement au contenu
Article Dans Une Revue Annals of Intensive Care Année : 2018

Diaphragm function and weaning from mechanical ventilation: an ultrasound and phrenic nerve stimulation clinical study

Résumé

Background: Diaphragm dysfunction is defined by a value of twitch tracheal pressure in response to magnetic phrenic stimulation (twitch pressure) amounting to less than 11 cmH2O. This study assessed whether this threshold or a lower one would predict accurately weaning failure from mechanical ventilation. Twitch pressure was compared to ultrasound measurement of diaphragm function. Methods: In patients undergoing a first spontaneous breathing trial, diaphragm function was evaluated by twitch pressure and by diaphragm ultrasound (thickening fraction). Receiver operating characteristics curves were computed to determine the best thresholds predicting failure of spontaneous breathing trial. Results: Seventy-six patients were evaluated, 48 (63%) succeeded and 28 (37%) failed the spontaneous breathing trial. The optimal thresholds of twitch pressure and thickening fraction to predict failure of the spontaneous breathing trial were, respectively, 7.2 cmH2O and 25.8%, respectively. The receiver operating characteristics curves were 0.80 (95% CI 0.70–0.89) for twitch pressure and 0.82 (95% CI 0.73–0.93) for thickening fraction. Both receiver operating characteristics curves were similar (p = 0.83). A twitch pressure value lower than 11 cmH2O (the traditional cutoff for diaphragm dysfunction) predicted failure of the spontaneous breathing trial with a sensitivity of 89% (95% CI 72–98%) and a specificity of 45% (95% CI 30–60%). Conclusions: Failure of spontaneous breathing trial can be predicted with a lower value of twitch pressure than the value defining diaphragm dysfunction. Twitch pressure and thickening fraction had similar strong performance in the prediction of failure of the spontaneous breathing trial.
Fichier principal
Vignette du fichier
s13613-018-0401-y.pdf (969.31 Ko) Télécharger le fichier
Origine : Publication financée par une institution
Loading...

Dates et versions

hal-01791913 , version 1 (15-05-2018)

Licence

Paternité

Identifiants

Citer

Martin Dres, Ewan C Goligher, Bruno-Pierre Dubé, Elise Morawiec, Laurence Dangers, et al.. Diaphragm function and weaning from mechanical ventilation: an ultrasound and phrenic nerve stimulation clinical study. Annals of Intensive Care, 2018, 8, pp.53. ⟨10.1186/s13613-018-0401-y⟩. ⟨hal-01791913⟩
114 Consultations
131 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More