Waveforms-guided cycling-off during pressure support ventilation improves both inspiratory and expiratory patient-ventilator synchronisation
Copyright © 2022 Société française d'anesthésie et de réanimation (Sfar). Published by Elsevier Masson SAS. All rights reserved..
OBJECTIVE: To test the performance of a software able to control mechanical ventilator cycling-off by means of automatic, real-time analysis of ventilator waveforms during pressure support ventilation.
DESIGN: Prospective randomised crossover study.
SETTING: University Intensive Care Unit.
PATIENTS: Fifteen difficult-to-wean patients under pressure support ventilation.
INTERVENTIONS: Patients were ventilated using a G5 ventilator (Hamilton Medical, Bonaduz, Switzerland) with three different cycling-off settings: standard (expiratory trigger sensitivity set at 25% of peak inspiratory flow), optimised by an expert clinician and automated; the last two settings were tested at baseline pressure support and after a 50% increase in pressure support.
MEASUREMENTS AND MAIN RESULTS: Ventilator waveforms were recorded and analysed by four physicians experts in waveforms analysis. Major and minor asynchronies were detected and total asynchrony time computed. Automation compared to standard setting reduced cycling delay from 407 ms [257-567] to 59 ms [22-111] and ineffective efforts from 12.5% [3.4-46.4] to 2.8% [1.9-4.6]) at baseline support (p < 0.001); expert optimisation performed similarly. At high support both cycling delay and ineffective efforts increased, mainly in the case of expert setting, with the need of reoptimisation of expiratory trigger sensitivity. At baseline support, asynchrony time decreased from 39.9% [27.4-58.7] with standard setting to 32% [22.3-39.4] with expert optimisation (p < 0.01) and to 24.4% [19.6-32.5] with automation (p < 0.001). Both at baseline and at high support, asynchrony time was lower with automation than with expert setting.
CONCLUSIONS: Cycling-off guided by automated real-time waveforms analysis seems a reliable solution to improve synchronisation in difficult-to-wean patients under pressure support ventilation.
| Errataetall: |
CommentIn: Anaesth Crit Care Pain Med. 2022 Dec;41(6):101157. - PMID 36108918 |
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| Medienart: |
E-Artikel |
| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:41 |
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| Enthalten in: |
Anaesthesia, critical care & pain medicine - 41(2022), 6 vom: 07. Dez., Seite 101153 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Mojoli, Francesco [VerfasserIn] |
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| Links: |
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| Themen: |
Asynchronies |
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| Anmerkungen: |
Date Completed 30.11.2022 Date Revised 02.12.2022 published: Print-Electronic CommentIn: Anaesth Crit Care Pain Med. 2022 Dec;41(6):101157. - PMID 36108918 Citation Status MEDLINE |
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| doi: |
10.1016/j.accpm.2022.101153 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
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| 245 | 1 | 0 | |a Waveforms-guided cycling-off during pressure support ventilation improves both inspiratory and expiratory patient-ventilator synchronisation |
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| 500 | |a CommentIn: Anaesth Crit Care Pain Med. 2022 Dec;41(6):101157. - PMID 36108918 | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2022 Société française d'anesthésie et de réanimation (Sfar). Published by Elsevier Masson SAS. All rights reserved. | ||
| 520 | |a OBJECTIVE: To test the performance of a software able to control mechanical ventilator cycling-off by means of automatic, real-time analysis of ventilator waveforms during pressure support ventilation | ||
| 520 | |a DESIGN: Prospective randomised crossover study | ||
| 520 | |a SETTING: University Intensive Care Unit | ||
| 520 | |a PATIENTS: Fifteen difficult-to-wean patients under pressure support ventilation | ||
| 520 | |a INTERVENTIONS: Patients were ventilated using a G5 ventilator (Hamilton Medical, Bonaduz, Switzerland) with three different cycling-off settings: standard (expiratory trigger sensitivity set at 25% of peak inspiratory flow), optimised by an expert clinician and automated; the last two settings were tested at baseline pressure support and after a 50% increase in pressure support | ||
| 520 | |a MEASUREMENTS AND MAIN RESULTS: Ventilator waveforms were recorded and analysed by four physicians experts in waveforms analysis. Major and minor asynchronies were detected and total asynchrony time computed. Automation compared to standard setting reduced cycling delay from 407 ms [257-567] to 59 ms [22-111] and ineffective efforts from 12.5% [3.4-46.4] to 2.8% [1.9-4.6]) at baseline support (p < 0.001); expert optimisation performed similarly. At high support both cycling delay and ineffective efforts increased, mainly in the case of expert setting, with the need of reoptimisation of expiratory trigger sensitivity. At baseline support, asynchrony time decreased from 39.9% [27.4-58.7] with standard setting to 32% [22.3-39.4] with expert optimisation (p < 0.01) and to 24.4% [19.6-32.5] with automation (p < 0.001). Both at baseline and at high support, asynchrony time was lower with automation than with expert setting | ||
| 520 | |a CONCLUSIONS: Cycling-off guided by automated real-time waveforms analysis seems a reliable solution to improve synchronisation in difficult-to-wean patients under pressure support ventilation | ||
| 650 | 4 | |a Randomized Controlled Trial | |
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Asynchronies | |
| 650 | 4 | |a Cycling | |
| 650 | 4 | |a Hyperinflation | |
| 650 | 4 | |a Mechanical ventilation | |
| 650 | 4 | |a Patient-ventilator interaction | |
| 650 | 4 | |a Pressure support ventilation | |
| 700 | 1 | |a Orlando, Anita |e verfasserin |4 aut | |
| 700 | 1 | |a Bianchi, Isabella Maria |e verfasserin |4 aut | |
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| 700 | 1 | |a Arisi, Eric |e verfasserin |4 aut | |
| 700 | 1 | |a Salve, Giulia |e verfasserin |4 aut | |
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| 700 | 1 | |a Mongodi, Silvia |e verfasserin |4 aut | |
| 700 | 1 | |a Pozzi, Marco |e verfasserin |4 aut | |
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