Diaphragmatic Rapid Shallow Breathing Index for Predicting Weaning Outcome From Mechanical Ventilation

NCT ID: NCT03561792

Last Updated: 2019-01-02

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

106 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-12-01

Study Completion Date

2018-10-01

Brief Summary

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Predicting successful discontinuation from mechanical ventilation has been a focus of interest to all critical care physicians . Various weaning indices have been investigated to optimize the weaning process. Among them, the rapid shallow breathing index (RSBI) has gained wide use but it have different sensitivities and specificities. By substituting tidal volume (VT) with diaphragmatic displacement (DD) in the calculation of RSBI a new index (the diaphragmatic rapid shallow breathing index DRSBI) was proposed and it was independently associated with weaning failure and its accuracy for predicting weaning outcome is expected to be superior to the traditional RSBI.

Detailed Description

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The rapid shallow breathing index (RSBI), calculated from respiratory rate divided by tidal volume (RR/VT), is a well-known weaning index and one of the most clinical indices used to predict weaning outcome. However, it has some limitations in predicting weaning outcomes. Several previous studies have defined different sensitivities and specificities for RSBI less than 105 to predict weaning success which may lead to errors in predicting successful weaning.

On the other hand, Weaning failure is likely to occur if there is an imbalance between the load on the inspiratory muscles and their neuromuscular capacity, the imbalance between the mechanical load imposed on the diaphragm which is the major muscle of inspiration and its ability to cope with it. Therefore, evaluating the function of diaphragm before any weaning trial could be useful in predicting weaning outcome.

Bedside ultrasonography is an easy, fast, noninvasive, and accurate maneuver for evaluating diaphragmatic function. Diaphragmatic displacement (DD) reflecting the ability of diaphragm to produce force and subsequently tidal volume during inspiration and defined as displacement of less than 10 mm has been found to be a predictor of weaning failure among patients in medical ICUs.

Spadaro et al. proposed substituting VT with DD in the RSBI, and calculating diaphragmatic RSBI (DRSBI) would result in a more accurate predictive index than the traditional RSBI.

Conditions

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Weaning Failure

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

OTHER

Blinding Strategy

SINGLE

Caregivers
The ICU team on charge takes the decision to continue spontaneous breathing trial (SBT) according to the local practice protocols which depends on the traditional RSBI (RSBI \< 105 predicts successful weaning). The ICU team will not be allowed to know the results of diaphragmatic ultrasound.

Study Groups

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traditional RSBI

the decision to continue SBT depends on the traditional RSBI (RSBI \< 105 predicts successful weaning)

Group Type NO_INTERVENTION

No interventions assigned to this group

Diaphragmatic RSBI

diaphragm ultrasound was done to measure diaphragmatic displacement which is used to calculate DRSBI and The investigator takes the decision about SBT continuation based on the result of DRSBI (DRSBI \< 1.3 predicts successful weaning)

Group Type EXPERIMENTAL

Diaphragm ultrasound

Intervention Type OTHER

In the semi-sitting position ultrasonography for diaphragmatic displacement was performed by the same intensivist. Diaphragmatic movement was evaluated by using 2 to 5 MHz US probe (Sonosite M-Turbo machine). The right hemidiaphragm was examined by two-dimensional (2D) and M-mode to record diaphragm displacement.in M-mode, the diaphragmatic displacement (cm) was measured and then DRSBI was calculated by respiratory rate (RR)/ diaphragmatic displacement (DD) (in mm)

Interventions

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Diaphragm ultrasound

In the semi-sitting position ultrasonography for diaphragmatic displacement was performed by the same intensivist. Diaphragmatic movement was evaluated by using 2 to 5 MHz US probe (Sonosite M-Turbo machine). The right hemidiaphragm was examined by two-dimensional (2D) and M-mode to record diaphragm displacement.in M-mode, the diaphragmatic displacement (cm) was measured and then DRSBI was calculated by respiratory rate (RR)/ diaphragmatic displacement (DD) (in mm)

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Patient or relative acceptance
* Mechanically ventilated for more than 48 hours
* Ready to wean and at their first spontaneous breathing trial
* meeting all weaning criteria

Exclusion Criteria

* history of any neuromuscular disease
* diaphragmatic palsy
* cervical injury
* current chest trauma
* thoracotomy for any reason
* patients in whom neuromuscular blockers are used in the last 48 hours before the study
* patients for whom aminoglycosides are prescribed during their course in ICU
Minimum Eligible Age

18 Years

Maximum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Zagazig University

OTHER_GOV

Sponsor Role lead

Responsible Party

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Sherif M. S. Mowafy

Lecturer of Anesthesia and Surgical Intensive Care

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Essam F Abdelgalel, MD

Role: STUDY_DIRECTOR

Anesthesia and Surgical Intensive Care Department, faculty of medicine, Zagazig University

Sherif MS Mowafy, MD

Role: PRINCIPAL_INVESTIGATOR

Anesthesia and Surgical Intensive Care Department, faculty of medicine, Zagazig University

Locations

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Zagazig University Hospitals

Zagazig, Sharqia Province, Egypt

Site Status

Countries

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Egypt

References

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Reference Type BACKGROUND
PMID: 19826583 (View on PubMed)

Penuelas O, Frutos-Vivar F, Fernandez C, Anzueto A, Epstein SK, Apezteguia C, Gonzalez M, Nin N, Raymondos K, Tomicic V, Desmery P, Arabi Y, Pelosi P, Kuiper M, Jibaja M, Matamis D, Ferguson ND, Esteban A; Ventila Group. Characteristics and outcomes of ventilated patients according to time to liberation from mechanical ventilation. Am J Respir Crit Care Med. 2011 Aug 15;184(4):430-7. doi: 10.1164/rccm.201011-1887OC.

Reference Type BACKGROUND
PMID: 21616997 (View on PubMed)

Thille AW, Harrois A, Schortgen F, Brun-Buisson C, Brochard L. Outcomes of extubation failure in medical intensive care unit patients. Crit Care Med. 2011 Dec;39(12):2612-8. doi: 10.1097/CCM.0b013e3182282a5a.

Reference Type BACKGROUND
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McConville JF, Kress JP. Weaning patients from the ventilator. N Engl J Med. 2012 Dec 6;367(23):2233-9. doi: 10.1056/NEJMra1203367. No abstract available.

Reference Type BACKGROUND
PMID: 23215559 (View on PubMed)

Spadaro S, Grasso S, Mauri T, Dalla Corte F, Alvisi V, Ragazzi R, Cricca V, Biondi G, Di Mussi R, Marangoni E, Volta CA. Can diaphragmatic ultrasonography performed during the T-tube trial predict weaning failure? The role of diaphragmatic rapid shallow breathing index. Crit Care. 2016 Sep 28;20(1):305. doi: 10.1186/s13054-016-1479-y.

Reference Type BACKGROUND
PMID: 27677861 (View on PubMed)

Yang KL, Tobin MJ. A prospective study of indexes predicting the outcome of trials of weaning from mechanical ventilation. N Engl J Med. 1991 May 23;324(21):1445-50. doi: 10.1056/NEJM199105233242101.

Reference Type BACKGROUND
PMID: 2023603 (View on PubMed)

Lee KH, Hui KP, Chan TB, Tan WC, Lim TK. Rapid shallow breathing (frequency-tidal volume ratio) did not predict extubation outcome. Chest. 1994 Feb;105(2):540-3. doi: 10.1378/chest.105.2.540.

Reference Type BACKGROUND
PMID: 8306759 (View on PubMed)

Pirompanich P, Romsaiyut S. Correction to: Use of diaphragm thickening fraction combined with rapid shallow breathing index for predicting success of weaning from mechanical ventilator in medical patients. J Intensive Care. 2018 Apr 23;6:25. doi: 10.1186/s40560-018-0293-9. eCollection 2018.

Reference Type BACKGROUND
PMID: 29714351 (View on PubMed)

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Reference Type BACKGROUND
PMID: 27620292 (View on PubMed)

Kim WY, Suh HJ, Hong SB, Koh Y, Lim CM. Diaphragm dysfunction assessed by ultrasonography: influence on weaning from mechanical ventilation. Crit Care Med. 2011 Dec;39(12):2627-30. doi: 10.1097/CCM.0b013e3182266408.

Reference Type BACKGROUND
PMID: 21705883 (View on PubMed)

Yoo JW, Lee SJ, Lee JD, Kim HC. Comparison of clinical utility between diaphragm excursion and thickening change using ultrasonography to predict extubation success. Korean J Intern Med. 2018 Mar;33(2):331-339. doi: 10.3904/kjim.2016.152. Epub 2017 Oct 19.

Reference Type BACKGROUND
PMID: 29050461 (View on PubMed)

Boles JM, Bion J, Connors A, Herridge M, Marsh B, Melot C, Pearl R, Silverman H, Stanchina M, Vieillard-Baron A, Welte T. Weaning from mechanical ventilation. Eur Respir J. 2007 May;29(5):1033-56. doi: 10.1183/09031936.00010206.

Reference Type BACKGROUND
PMID: 17470624 (View on PubMed)

MacIntyre NR, Cook DJ, Ely EW Jr, Epstein SK, Fink JB, Heffner JE, Hess D, Hubmayer RD, Scheinhorn DJ; American College of Chest Physicians; American Association for Respiratory Care; American College of Critical Care Medicine. Evidence-based guidelines for weaning and discontinuing ventilatory support: a collective task force facilitated by the American College of Chest Physicians; the American Association for Respiratory Care; and the American College of Critical Care Medicine. Chest. 2001 Dec;120(6 Suppl):375S-95S. doi: 10.1378/chest.120.6_suppl.375s. No abstract available.

Reference Type BACKGROUND
PMID: 11742959 (View on PubMed)

Boussuges A, Gole Y, Blanc P. Diaphragmatic motion studied by m-mode ultrasonography: methods, reproducibility, and normal values. Chest. 2009 Feb;135(2):391-400. doi: 10.1378/chest.08-1541. Epub 2008 Nov 18.

Reference Type BACKGROUND
PMID: 19017880 (View on PubMed)

Matamis D, Soilemezi E, Tsagourias M, Akoumianaki E, Dimassi S, Boroli F, Richard JC, Brochard L. Sonographic evaluation of the diaphragm in critically ill patients. Technique and clinical applications. Intensive Care Med. 2013 May;39(5):801-10. doi: 10.1007/s00134-013-2823-1. Epub 2013 Jan 24.

Reference Type BACKGROUND
PMID: 23344830 (View on PubMed)

Other Identifiers

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4664/28-5-2018

Identifier Type: -

Identifier Source: org_study_id

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