Regional Lung Opening and Closing Pressures in Patients With Acute Lung Injury

NCT ID: NCT01107847

Last Updated: 2010-04-21

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

UNKNOWN

Clinical Phase

NA

Total Enrollment

25 participants

Study Classification

INTERVENTIONAL

Brief Summary

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The purpose of this study is the measurement of regional opening and closing pressures of lung tissue by electrical impedance tomography in lung healthy and patients with acute lung injury. These values might help the setting of positive endexpiratory pressure during artificial ventilation to avoid the cyclic opening and closing of alveoli.

Detailed Description

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During artificial ventilation the cyclic opening and closing of alveoli during artificial ventilation results in patients with acute lung injury (ALI) in a higher mortality. A positive endexpiratory pressure (PEEP) is applied with the intention to avoid these cyclic opening and closing of alveoli. The distribution of ventilation in patients with ALI is extremely inhomogeneous, consequently there are different regional opening pressures needed to open up the alveoli and avoid closing. Finding the best level of PEEP in patients with injured lungs to avoid atelectasis and alveolar strain induced by inadequately high or low PEEP levels is a challenge.

The purpose of this study is to develop a protocol for measuring regional opening and closing pressures using the method of electrical impedance tomography in lung healthy and ALI patients. A ventilator setting guided by regional opening and closing pressures might help reducing the impairment of the lung by artificial ventilation.

Conditions

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Acute Lung Injury

Study Design

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Intervention Model

PARALLEL

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Interventions

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low flow pressure volume manoeuvre

In all patients a standard low flow pressure volume manoeuvre is applied by a respirator with a constant gas flow of 4 l/min starting at a zero end-expiratory pressure up to a tidal volume of 2 l or until a maximum airway pressure of 35 cm H2O was reached.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* artificial ventilation
* acute lung injury / healthy lung (control group)

Exclusion Criteria

* pregnancy
* Cerebral trauma / surgery
* Age \< 18 years
* instable cardiovascular disease
* instable chest wall
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University Hospital Schleswig-Holstein

OTHER

Sponsor Role lead

Responsible Party

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University of Schleswig-Holstein

Principal Investigators

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Jens Scholz, M.D.

Role: STUDY_CHAIR

University Medical Center of Schleswig-Holstein, Campus Kiel, Department of Anesthesiology and Intensive Care Medicine

Locations

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Department of Anesthesiology and Intensive Care Medicine, University Medical Center of Schleswig-Holstein, Campus Kiel

Kiel, , Germany

Site Status RECRUITING

Countries

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Germany

Central Contacts

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Sven Pulletz, M.D.

Role: CONTACT

+49 431 597 2991

Facility Contacts

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Sven Pulletz, M.D.

Role: primary

+ 49 431 597 2991

Inéz Frerichs, M.D.

Role: backup

+ 49 431 597 2991

References

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Caironi P, Cressoni M, Chiumello D, Ranieri M, Quintel M, Russo SG, Cornejo R, Bugedo G, Carlesso E, Russo R, Caspani L, Gattinoni L. Lung opening and closing during ventilation of acute respiratory distress syndrome. Am J Respir Crit Care Med. 2010 Mar 15;181(6):578-86. doi: 10.1164/rccm.200905-0787OC. Epub 2009 Nov 12.

Reference Type BACKGROUND
PMID: 19910610 (View on PubMed)

Wrigge H, Zinserling J, Muders T, Varelmann D, Gunther U, von der Groeben C, Magnusson A, Hedenstierna G, Putensen C. Electrical impedance tomography compared with thoracic computed tomography during a slow inflation maneuver in experimental models of lung injury. Crit Care Med. 2008 Mar;36(3):903-9. doi: 10.1097/CCM.0B013E3181652EDD.

Reference Type BACKGROUND
PMID: 18431279 (View on PubMed)

Victorino JA, Borges JB, Okamoto VN, Matos GF, Tucci MR, Caramez MP, Tanaka H, Sipmann FS, Santos DC, Barbas CS, Carvalho CR, Amato MB. Imbalances in regional lung ventilation: a validation study on electrical impedance tomography. Am J Respir Crit Care Med. 2004 Apr 1;169(7):791-800. doi: 10.1164/rccm.200301-133OC. Epub 2003 Dec 23.

Reference Type BACKGROUND
PMID: 14693669 (View on PubMed)

Other Identifiers

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UKSH ROP/RCP

Identifier Type: -

Identifier Source: org_study_id

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