Diaphragmatic Ultrasound as a Guide Tool During Weaning From Mechanical Ventilation
NCT ID: NCT03608332
Last Updated: 2019-10-01
Study Results
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Basic Information
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COMPLETED
NA
160 participants
INTERVENTIONAL
2018-04-30
2019-09-29
Brief Summary
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Detailed Description
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Multiple studies have found that patients tolerantof SBTs were found to have successful discontinuationsat least 77% of the time.
Causes of weaning failure include: airway and lung dysfunction, brain dysfunction, cardiac dysfunction, diaphragm dysfunction, and endocrine dysfunction .
Diaphragmatic dysfunction is a common cause of weaning failure , however most of the traditional methods used for evaluation of diaphragmatic function (fluoroscopy, trans-diaphragmatic pressure measurement) are invasive and not available.
Ultrasound assessment of diaphragmatic function has been developed recently providing an easy and safe method for evaluation of diaphragmatic excursion and thickening.
It was found that weaning failure (Re-intubation within 48 hours) was associated with diaphragmatic excursion \<1 cm and thickening fraction \<28% several studies reported the value of diaphragmatic ultrasound to predict weaning failure ,however no one of them used diaphragmatic ultrasound to guide weaning.
previous studies showed that failure rate of weaning from mechanical ventilation was 27% ,however failure rate in our department was 43% adding ultrasound derived values aims for improving success rate of weaning from mechanical ventilation.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
DIAGNOSTIC
DOUBLE
Study Groups
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Group S
weaning readiness will be evaluated with the standard criteria :- A) Clinical assessment:-
* Resolution of acute phase of disease for which patient was intubated
* Adequate cough
* Absence of excessive tracheobronchial secretions
B) Objective criteria:-
* Adequate oxygenation:PaO2\>60mmHg with PEEP\<8,SaO2\>90%,FIO2 \<0.5,PaO2/FIO2\>200
* Respiratory rate \<30
* PH and PaCO2 appropriate for patients' baseline respiratory status
* Hemodynamically stable :minimal or no vasopressor/inotropes,no evidence of myocardial ischemia
* HR\<140 beats/minute
* Patient is arousable or Glasgow coma scale (GCS)\>13
No interventions assigned to this group
Group SD
weaning readiness will be evaluated with the following criteria:- A) Clinical assessment:-
* Resolution of acute phase of disease for which patient was intubated
* Adequate cough
* Absence of excessive tracheobronchial secretions
B) Objective criteria:-
* Adequate oxygenation:PaO2\>60mmHg with PEEP\<8,SaO2\>90%,FIO2 \<0.5,PaO2/FIO2\>200
* Respiratory rate \<30
* PH and PaCO2 appropriate for patients' baseline respiratory status
* Hemodynamically stable :minimal or no vasopressor/inotropes,no evidence of myocardial ischemia
* HR\<140 beats/minute
* Patient is arousable or Glasgow coma scale (GCS)\>13
C) Ultrasound criteria:-
• Diaphragmatic excursion \>11 mm
diaphragmatic ultrasound
Diaphragmatic excursion; Diaphragmatic movement will be measured with a 3.5-MHz US probe (Mindray machine, DC-N6).
Interventions
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diaphragmatic ultrasound
Diaphragmatic excursion; Diaphragmatic movement will be measured with a 3.5-MHz US probe (Mindray machine, DC-N6).
Eligibility Criteria
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Inclusion Criteria
Exclusion Criteria
* surgical dressings over the right lower rib cage which would preclude ultrasound examination
* patients with chest trauma, thoracotomy, diaphragmatic paralysis, diaphragmatic injury and diaphragmatic surgery
* patients with neuromuscular diseases ( myasthenia gravis ,Muscular dystrophies ,Multiple sclerosis and Amyotrophic lateral sclerosis)
18 Years
ALL
No
Sponsors
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Cairo University
OTHER
Responsible Party
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Mina Adolf Helmy
Doctor
Principal Investigators
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ahmed mohamed moukhtar, MD
Role: PRINCIPAL_INVESTIGATOR
professor of anesthesiology cairo university
waleed ibrahim Hamimmy, MD
Role: PRINCIPAL_INVESTIGATOR
professor of anesthesiology cairo university
akram shahat Eladawy, MD
Role: PRINCIPAL_INVESTIGATOR
assistant professor of anesthesiology cairo university
ahmed muhamed lotfy, MD
Role: PRINCIPAL_INVESTIGATOR
lecturer of anesthesiology cairo university
mina adolf helmy, MSc
Role: PRINCIPAL_INVESTIGATOR
assistant lecturer of anesthesiology cairo university
Locations
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Cairo University-Manial
Cairo, , Egypt
Countries
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References
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El-Khatib MF, Bou-Khalil P. Clinical review: liberation from mechanical ventilation. Crit Care. 2008;12(4):221. doi: 10.1186/cc6959. Epub 2008 Aug 6.
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.
Fagon JY, Chastre J, Hance AJ, Montravers P, Novara A, Gibert C. Nosocomial pneumonia in ventilated patients: a cohort study evaluating attributable mortality and hospital stay. Am J Med. 1993 Mar;94(3):281-8. doi: 10.1016/0002-9343(93)90060-3.
Esteban A, Frutos F, Tobin MJ, Alia I, Solsona JF, Valverdu I, Fernandez R, de la Cal MA, Benito S, Tomas R, et al. A comparison of four methods of weaning patients from mechanical ventilation. Spanish Lung Failure Collaborative Group. N Engl J Med. 1995 Feb 9;332(6):345-50. doi: 10.1056/NEJM199502093320601.
Heunks LM, van der Hoeven JG. Clinical review: the ABC of weaning failure--a structured approach. Crit Care. 2010;14(6):245. doi: 10.1186/cc9296. Epub 2010 Dec 8.
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.
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.
Ferrari G, De Filippi G, Elia F, Panero F, Volpicelli G, Apra F. Diaphragm ultrasound as a new index of discontinuation from mechanical ventilation. Crit Ultrasound J. 2014 Jun 7;6(1):8. doi: 10.1186/2036-7902-6-8. eCollection 2014.
DiNino E, Gartman EJ, Sethi JM, McCool FD. Diaphragm ultrasound as a predictor of successful extubation from mechanical ventilation. Thorax. 2014 May;69(5):423-7. doi: 10.1136/thoraxjnl-2013-204111. Epub 2013 Dec 23.
Esteban A, Alia I, Tobin MJ, Gil A, Gordo F, Vallverdu I, Blanch L, Bonet A, Vazquez A, de Pablo R, Torres A, de La Cal MA, Macias S. Effect of spontaneous breathing trial duration on outcome of attempts to discontinue mechanical ventilation. Spanish Lung Failure Collaborative Group. Am J Respir Crit Care Med. 1999 Feb;159(2):512-8. doi: 10.1164/ajrccm.159.2.9803106.
Jiang JR, Tsai TH, Jerng JS, Yu CJ, Wu HD, Yang PC. Ultrasonographic evaluation of liver/spleen movements and extubation outcome. Chest. 2004 Jul;126(1):179-85. doi: 10.1378/chest.126.1.179.
Other Identifiers
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DUS in weaning
Identifier Type: -
Identifier Source: org_study_id
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