TY - JOUR
T1 - Diaphragm Activity Pre and Post Extubation in Ventilated Critically Ill Infants and Children Measured With Transcutaneous Electromyography
AU - van Leuteren, Ruud W.
AU - de Waal, Cornelia G.
AU - de Jongh, Frans H.
AU - Bem, Reinout A.
AU - van Kaam, Anton H.
AU - Hutten, Gerard
N1 - Publisher Copyright: Copyright © 2021 by the Society of Critical Care Medicine and the World Federation of Pediatric Intensive and Critical Care Societies.
PY - 2021/11/1
Y1 - 2021/11/1
N2 - OBJECTIVES: Swift extubation is important to prevent detrimental effects of invasive mechanical ventilation but carries the risk of extubation failure. Accurate tools to assess extubation readiness are lacking. This study aimed to describe the effect of extubation on diaphragm activity in ventilated infants and children. Our secondary aim was to compare diaphragm activity between failed and successfully extubated patients. DESIGN: Prospective, observational study. SETTING: Single-center tertiary neonatal ICU and PICU. PATIENTS: Infants and children receiving invasive mechanical ventilation longer than 24 hours.None. MEASUREMENTS AND MAIN RESULTS: Diaphragm activity was measured with transcutaneous electromyography, from 15 minutes before extubation till 180 minutes thereafter. Peak and tonic activity, inspiratory amplitude, inspiratory area under the curve, and respiratory rate were calculated from the diaphragm activity waveform. One hundred forty-seven infants and children were included (median postnatal age, 1.9; interquartile range, 0.9-6.7 wk). Twenty patients (13.6%) failed extubation within 72 hours. Diaphragm activity increased rapidly after extubation and remained higher throughout the measurement period. Pre extubation, peak (end-inspiratory) diaphragm activity and tonic (end-inspiratory) diaphragm activity were significantly higher in failure, compared with success cases (5.6 vs 7.0 μV; p = 0.04 and 2.8 vs 4.1 μV; p = 0.04, respectively). Receiver operator curve analysis showed the highest area under the curve for tonic (end-inspiratory) diaphragm activity (0.65), with a tonic (end-inspiratory) diaphragm activity greater than 3.4 μV having a combined sensitivity and specificity of 55% and 77%, respectively, to predict extubation outcome. After extubation, diaphragm activity remained higher in patients failing extubation. CONCLUSIONS: Diaphragm activity rapidly increased after extubation. Patients failing extubation had a higher level of diaphragm activity, both pre and post extubation. The predictive value of the diaphragm activity variables alone was limited. Future studies are warranted to assess the additional value of electromyography of the diaphragm in combined extubation readiness assessment.
AB - OBJECTIVES: Swift extubation is important to prevent detrimental effects of invasive mechanical ventilation but carries the risk of extubation failure. Accurate tools to assess extubation readiness are lacking. This study aimed to describe the effect of extubation on diaphragm activity in ventilated infants and children. Our secondary aim was to compare diaphragm activity between failed and successfully extubated patients. DESIGN: Prospective, observational study. SETTING: Single-center tertiary neonatal ICU and PICU. PATIENTS: Infants and children receiving invasive mechanical ventilation longer than 24 hours.None. MEASUREMENTS AND MAIN RESULTS: Diaphragm activity was measured with transcutaneous electromyography, from 15 minutes before extubation till 180 minutes thereafter. Peak and tonic activity, inspiratory amplitude, inspiratory area under the curve, and respiratory rate were calculated from the diaphragm activity waveform. One hundred forty-seven infants and children were included (median postnatal age, 1.9; interquartile range, 0.9-6.7 wk). Twenty patients (13.6%) failed extubation within 72 hours. Diaphragm activity increased rapidly after extubation and remained higher throughout the measurement period. Pre extubation, peak (end-inspiratory) diaphragm activity and tonic (end-inspiratory) diaphragm activity were significantly higher in failure, compared with success cases (5.6 vs 7.0 μV; p = 0.04 and 2.8 vs 4.1 μV; p = 0.04, respectively). Receiver operator curve analysis showed the highest area under the curve for tonic (end-inspiratory) diaphragm activity (0.65), with a tonic (end-inspiratory) diaphragm activity greater than 3.4 μV having a combined sensitivity and specificity of 55% and 77%, respectively, to predict extubation outcome. After extubation, diaphragm activity remained higher in patients failing extubation. CONCLUSIONS: Diaphragm activity rapidly increased after extubation. Patients failing extubation had a higher level of diaphragm activity, both pre and post extubation. The predictive value of the diaphragm activity variables alone was limited. Future studies are warranted to assess the additional value of electromyography of the diaphragm in combined extubation readiness assessment.
UR - https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85121947193&origin=inward
UR - https://www.ncbi.nlm.nih.gov/pubmed/34534162
UR - http://www.scopus.com/inward/record.url?scp=85121947193&partnerID=8YFLogxK
U2 - https://doi.org/10.1097/PCC.0000000000002828
DO - https://doi.org/10.1097/PCC.0000000000002828
M3 - Article
C2 - 34534162
SN - 1529-7535
VL - 22
SP - 950
EP - 959
JO - Pediatric critical care medicine
JF - Pediatric critical care medicine
IS - 11
ER -