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Epidural morphine in COVID ARDS patients with high respiratory drive: a structured summary of a study protocol for a randomised controlled trial

OBJECTIVES: We aim to study the effect of epidural morphine as a means to reduce high respiratory drive in COVID 19 patients on non-invasive ventilation (NIV)—primary end point—and to study its effect on respiratory parameters, subjective patient comfort, rates of endotracheal intubation, duration o...

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Autores principales: Tripathy, Swagata, Rao, P. Bhaskar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8443904/
https://www.ncbi.nlm.nih.gov/pubmed/34530881
http://dx.doi.org/10.1186/s13063-021-05570-5
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author Tripathy, Swagata
Rao, P. Bhaskar
author_facet Tripathy, Swagata
Rao, P. Bhaskar
author_sort Tripathy, Swagata
collection PubMed
description OBJECTIVES: We aim to study the effect of epidural morphine as a means to reduce high respiratory drive in COVID 19 patients on non-invasive ventilation (NIV)—primary end point—and to study its effect on respiratory parameters, subjective patient comfort, rates of endotracheal intubation, duration of mechanical ventilation and mortality. TRIAL DESIGN: Parallel group, randomised, double blind, single centre placebo control trial. Allocation ratio 1:1, superiority trial PARTICIPANTS: Trial site and population—COVID ICU patients in the All India Institute of Medical Sciences (AIIMS) Bhubaneswar, Odisha, India Inclusion and exclusion criteria Inclusion criteria Adult patients on NIV with COVID-19 Exclusion criteria Metabolic acidosis HCO(3)-< 16 and pH < 7.2. Severe hypoxemia warranting cessation of NIV and intubation, non-acceptance of NIV and proven sepsis. Technical difficulty for epidural catheterization, coagulation abnormalities, low respiratory drive and EOL orders. Sources or methods of recruitment—daily discussion at 8 am of new admissions to COVID ICU on NIV—consenting adult patients with COVID19 on NIV and high respiratory drive; not meeting exclusion criteria will be recruited for the trial and randomised. INTERVENTION AND COMPARATOR: Patients of both groups will be turned to a lateral or sitting position (as comfortable), and an injection of local anaesthetic be given at lumbar 2–3/3–4 space. In the intervention group, an epidural catheter will be inserted using aseptic technique and fixed to the skin. The control group will have a sham catheter fixed exactly like in the intervention group, but not entering the epidural space. The intervention group will be administered injection morphine sulphate once every 18–24 h into the epidural space. The doses will be escalated daily (5–10 mg), titrated to effect: escalation limited by hypoventilation resulting in respiratory acidosis (pH < 7.2). The intervention will continue for a minimum of 2 doses and a maximum of 5 doses (96 h) of morphine. It will be stopped if the epidural catheter gets dislodged before the second dose or the patient is weaned off non-invasive ventilation to high flow mask for a continuous period of 24 h or requires endotracheal intubation. The patient will be followed up till death or 28 days after ICU discharge. MAIN OUTCOMES: Primary outcome—diaphragm thickening index fraction (average of minimum 3 readings) Secondary outcomes—ventilator parameters, sedation and pain scores, subjective comfort and dyspnoea scores, time to intubation, length of stay on NIV and 28-day mortality Timing of outcome assessment—every 8th hour assessment for 24 h after the last dose of epidural morphine or 120 h whichever is greater RANDOMISATION: A central random number list will be kept with the study research assistant. She will randomise according to the numbers available in the list using an allocation ratio of 1:1. An opaque sealed envelope concealing the allotted randomisation code will be dispatched to the ICU team. BLINDING (MASKING): The assessor, patient, nurses and physicians will be blind to group allocation. One member of the team not involved in research will administer the intervention. NUMBERS TO BE RANDOMISED (SAMPLE SIZE): Twenty-five patients per group; 50 patients total TRIAL STATUS: Protocol version 1. Not recruiting yet. Recruitment to begin by 24 July 2021 and end by 31 August 2022 TRIAL REGISTRATION: Central Trials Registry India CTRI CTRI/2021/07/035093. Registered on 23 July 2021. Prospectively registered FULL PROTOCOL: The full protocol is attached as an additional file, accessible from the Trials website (Additional file 1). In the interest of expediting dissemination of this material, the familiar formatting has been eliminated; this Letter serves as a summary of the key elements of the full protocol SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s13063-021-05570-5.
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spelling pubmed-84439042021-09-16 Epidural morphine in COVID ARDS patients with high respiratory drive: a structured summary of a study protocol for a randomised controlled trial Tripathy, Swagata Rao, P. Bhaskar Trials Letter OBJECTIVES: We aim to study the effect of epidural morphine as a means to reduce high respiratory drive in COVID 19 patients on non-invasive ventilation (NIV)—primary end point—and to study its effect on respiratory parameters, subjective patient comfort, rates of endotracheal intubation, duration of mechanical ventilation and mortality. TRIAL DESIGN: Parallel group, randomised, double blind, single centre placebo control trial. Allocation ratio 1:1, superiority trial PARTICIPANTS: Trial site and population—COVID ICU patients in the All India Institute of Medical Sciences (AIIMS) Bhubaneswar, Odisha, India Inclusion and exclusion criteria Inclusion criteria Adult patients on NIV with COVID-19 Exclusion criteria Metabolic acidosis HCO(3)-< 16 and pH < 7.2. Severe hypoxemia warranting cessation of NIV and intubation, non-acceptance of NIV and proven sepsis. Technical difficulty for epidural catheterization, coagulation abnormalities, low respiratory drive and EOL orders. Sources or methods of recruitment—daily discussion at 8 am of new admissions to COVID ICU on NIV—consenting adult patients with COVID19 on NIV and high respiratory drive; not meeting exclusion criteria will be recruited for the trial and randomised. INTERVENTION AND COMPARATOR: Patients of both groups will be turned to a lateral or sitting position (as comfortable), and an injection of local anaesthetic be given at lumbar 2–3/3–4 space. In the intervention group, an epidural catheter will be inserted using aseptic technique and fixed to the skin. The control group will have a sham catheter fixed exactly like in the intervention group, but not entering the epidural space. The intervention group will be administered injection morphine sulphate once every 18–24 h into the epidural space. The doses will be escalated daily (5–10 mg), titrated to effect: escalation limited by hypoventilation resulting in respiratory acidosis (pH < 7.2). The intervention will continue for a minimum of 2 doses and a maximum of 5 doses (96 h) of morphine. It will be stopped if the epidural catheter gets dislodged before the second dose or the patient is weaned off non-invasive ventilation to high flow mask for a continuous period of 24 h or requires endotracheal intubation. The patient will be followed up till death or 28 days after ICU discharge. MAIN OUTCOMES: Primary outcome—diaphragm thickening index fraction (average of minimum 3 readings) Secondary outcomes—ventilator parameters, sedation and pain scores, subjective comfort and dyspnoea scores, time to intubation, length of stay on NIV and 28-day mortality Timing of outcome assessment—every 8th hour assessment for 24 h after the last dose of epidural morphine or 120 h whichever is greater RANDOMISATION: A central random number list will be kept with the study research assistant. She will randomise according to the numbers available in the list using an allocation ratio of 1:1. An opaque sealed envelope concealing the allotted randomisation code will be dispatched to the ICU team. BLINDING (MASKING): The assessor, patient, nurses and physicians will be blind to group allocation. One member of the team not involved in research will administer the intervention. NUMBERS TO BE RANDOMISED (SAMPLE SIZE): Twenty-five patients per group; 50 patients total TRIAL STATUS: Protocol version 1. Not recruiting yet. Recruitment to begin by 24 July 2021 and end by 31 August 2022 TRIAL REGISTRATION: Central Trials Registry India CTRI CTRI/2021/07/035093. Registered on 23 July 2021. Prospectively registered FULL PROTOCOL: The full protocol is attached as an additional file, accessible from the Trials website (Additional file 1). In the interest of expediting dissemination of this material, the familiar formatting has been eliminated; this Letter serves as a summary of the key elements of the full protocol SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s13063-021-05570-5. BioMed Central 2021-09-16 /pmc/articles/PMC8443904/ /pubmed/34530881 http://dx.doi.org/10.1186/s13063-021-05570-5 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
spellingShingle Letter
Tripathy, Swagata
Rao, P. Bhaskar
Epidural morphine in COVID ARDS patients with high respiratory drive: a structured summary of a study protocol for a randomised controlled trial
title Epidural morphine in COVID ARDS patients with high respiratory drive: a structured summary of a study protocol for a randomised controlled trial
title_full Epidural morphine in COVID ARDS patients with high respiratory drive: a structured summary of a study protocol for a randomised controlled trial
title_fullStr Epidural morphine in COVID ARDS patients with high respiratory drive: a structured summary of a study protocol for a randomised controlled trial
title_full_unstemmed Epidural morphine in COVID ARDS patients with high respiratory drive: a structured summary of a study protocol for a randomised controlled trial
title_short Epidural morphine in COVID ARDS patients with high respiratory drive: a structured summary of a study protocol for a randomised controlled trial
title_sort epidural morphine in covid ards patients with high respiratory drive: a structured summary of a study protocol for a randomised controlled trial
topic Letter
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8443904/
https://www.ncbi.nlm.nih.gov/pubmed/34530881
http://dx.doi.org/10.1186/s13063-021-05570-5
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