Title |
Patient–ventilator asynchrony during conventional mechanical ventilation in children
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Published in |
Annals of Intensive Care, December 2017
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DOI | 10.1186/s13613-017-0344-8 |
Pubmed ID | |
Authors |
Guillaume Mortamet, Alexandrine Larouche, Laurence Ducharme-Crevier, Olivier Fléchelles, Gabrielle Constantin, Sandrine Essouri, Amélie-Ann Pellerin-Leblanc, Jennifer Beck, Christer Sinderby, Philippe Jouvet, Guillaume Emeriaud |
Abstract |
We aimed (1) to describe the characteristics of patient-ventilator asynchrony in a population of critically ill children, (2) to describe the risk factors associated with patient-ventilator asynchrony, and (3) to evaluate the association between patient-ventilator asynchrony and ventilator-free days at day 28. In this single-center prospective study, consecutive children admitted to the PICU and mechanically ventilated for at least 24 h were included. Patient-ventilator asynchrony was analyzed by comparing the ventilator pressure curve and the electrical activity of the diaphragm (Edi) signal with (1) a manual analysis and (2) using a standardized fully automated method. Fifty-two patients (median age 6 months) were included in the analysis. Eighteen patients had a very low ventilatory drive (i.e., peak Edi < 2 µV on average), which prevented the calculation of patient-ventilator asynchrony. Children spent 27% (interquartile 22-39%) of the time in conflict with the ventilator. Cycling-off errors and trigger delays contributed to most of this asynchronous time. The automatic algorithm provided a NeuroSync index of 45%, confirming the high prevalence of asynchrony. No association between the severity of asynchrony and ventilator-free days at day 28 or any other clinical secondary outcomes was observed, but the proportion of children with good synchrony was very low. Patient-ventilator interaction is poor in children supported by conventional ventilation, with a high frequency of depressed ventilatory drive and a large proportion of time spent in asynchrony. The clinical benefit of strategies to improve patient-ventilator interactions should be evaluated in pediatric critical care. |
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Country | Count | As % |
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Argentina | 4 | 27% |
Spain | 3 | 20% |
Colombia | 1 | 7% |
Ecuador | 1 | 7% |
United States | 1 | 7% |
Uruguay | 1 | 7% |
Unknown | 4 | 27% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 12 | 80% |
Scientists | 2 | 13% |
Science communicators (journalists, bloggers, editors) | 1 | 7% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 64 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Bachelor | 9 | 14% |
Other | 8 | 13% |
Student > Master | 6 | 9% |
Researcher | 4 | 6% |
Student > Doctoral Student | 4 | 6% |
Other | 14 | 22% |
Unknown | 19 | 30% |
Readers by discipline | Count | As % |
---|---|---|
Medicine and Dentistry | 20 | 31% |
Nursing and Health Professions | 9 | 14% |
Computer Science | 3 | 5% |
Biochemistry, Genetics and Molecular Biology | 2 | 3% |
Environmental Science | 1 | 2% |
Other | 7 | 11% |
Unknown | 22 | 34% |