NCT03268616

Brief Summary

The most significant pathophysiology change of COPD patients is persistent incompletely reversible airflow obstruction and increased lung volume. As a result, the work of breathing(WB) and neural respiratory drive (NRD)increased. Noninvasive positive pressure ventilation (NPPV) can reduce the load of respiratory muscles. Detection of NRD can be the index of monitoring for titration of optimal level of ventilator support in the future. As electromyography(EMG) is the most reliable measurement in evaluating NRD that can be used for human. Currently the standard method for evaluation of NRD with EMG is using esophageal multi-paired electrodes catheter(EMGdi) ,it is reliable but invasive .Surface respiratory EMG (sEMG)is a noninvasive measurement. Although it subjected to contamination and less sensitive, recently, advance in technology with multiple pair of surface electrodes is possible to sufficient signals for evaluation of NRD.So the investigator compare the NRD measured by EMGdi and sEMG,and consider that the correlation between them is well in different levels.

Trial Health

100
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
20

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Sep 2016

Shorter than P25 for not_applicable

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

September 1, 2016

Completed
6 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 7, 2017

Completed
4 months until next milestone

Study Completion

Last participant's last visit for all outcomes

July 2, 2017

Completed
2 months until next milestone

First Submitted

Initial submission to the registry

August 24, 2017

Completed
7 days until next milestone

First Posted

Study publicly available on registry

August 31, 2017

Completed
Last Updated

September 1, 2017

Status Verified

August 1, 2017

Enrollment Period

6 months

First QC Date

August 24, 2017

Last Update Submit

August 31, 2017

Conditions

Keywords

neural respiratory drivenoninvasive positive pressure ventilationelectromyography

Outcome Measures

Primary Outcomes (1)

  • correlation between sEMG and EMGdi

    the correlation between sEMG and EMGdi at different level of respiratory central drive was analyzed with Pearson correlation analysis

    through study completion, an average of 5 hours

Study Arms (2)

Healthy Subjects

EXPERIMENTAL

increase the inspiratory threshold load step by step(30%-80%MIP),in order to increase neural respiratory drive.

Device: inspiratory threshold load device and NPPV

Sever COPD Patients

EXPERIMENTAL

increase the pressure support ventilation step by step, in order to decrease neural respiratory drive.

Device: inspiratory threshold load device and NPPV

Interventions

before experiment ,every subject use a flanged mouthpiece attached to a manually operated occlusion valve in order to measure maximal inspiratory pressure (MIP)at functional residual capacity . healthy subjects:increase the pressure in a water-sealed inspiratory threshold loading device in order to increase the neural respiratory drive. COPD patients:increase the pressure in a non-invasive positive pressure ventilation in order to decrease the neural respiratory drive

Healthy SubjectsSever COPD Patients

Eligibility Criteria

Age18 Years - 80 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • normal cardio-pulmonary function
  • without low inspiratory muscle strength
  • non-smoker
  • without history of the nervous system and respiratory system disease
  • sever to very severe stable stage

You may not qualify if:

  • systemic application of corticosteroids nearly 4 weeks

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Related Publications (25)

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    PMID: 8514660BACKGROUND
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    PMID: 18782085BACKGROUND
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    PMID: 21285244BACKGROUND
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    PMID: 24747754BACKGROUND
  • American Thoracic Society/European Respiratory Society. ATS/ERS Statement on respiratory muscle testing. Am J Respir Crit Care Med. 2002 Aug 15;166(4):518-624. doi: 10.1164/rccm.166.4.518. No abstract available.

    PMID: 12186831BACKGROUND
  • Wanke T, Lahrmann H, Formanek D, Zwick H. Effect of posture on inspiratory muscle electromyogram response to hypercapnia. Eur J Appl Physiol Occup Physiol. 1992;64(3):266-71. doi: 10.1007/BF00626290.

    PMID: 1563372BACKGROUND
  • Jolley CJ, Luo YM, Steier J, Reilly C, Seymour J, Lunt A, Ward K, Rafferty GF, Polkey MI, Moxham J. Neural respiratory drive in healthy subjects and in COPD. Eur Respir J. 2009 Feb;33(2):289-97. doi: 10.1183/09031936.00093408. Epub 2008 Oct 1.

  • Li Y, Li YH, Li S, Luo YW, Xiao R, Huang YX, Huang JL, Chen YT, Zhi RC, Chen X. Efficiency of neural respiratory drive for the assessment of bronchodilator responsiveness in patients with chronic obstructive pulmonary disease: an exploratory study. J Thorac Dis. 2016 May;8(5):958-65. doi: 10.21037/jtd.2016.03.70.

  • Murphy PB, Kumar A, Reilly C, Jolley C, Walterspacher S, Fedele F, Hopkinson NS, Man WD, Polkey MI, Moxham J, Hart N. Neural respiratory drive as a physiological biomarker to monitor change during acute exacerbations of COPD. Thorax. 2011 Jul;66(7):602-8. doi: 10.1136/thx.2010.151332. Epub 2011 May 19.

  • Suh ES, Mandal S, Harding R, Ramsay M, Kamalanathan M, Henderson K, O'Kane K, Douiri A, Hopkinson NS, Polkey MI, Rafferty G, Murphy PB, Moxham J, Hart N. Neural respiratory drive predicts clinical deterioration and safe discharge in exacerbations of COPD. Thorax. 2015 Dec;70(12):1123-30. doi: 10.1136/thoraxjnl-2015-207188. Epub 2015 Jul 20.

  • Jensen D, O'Donnell DE, Li R, Luo YM. Effects of dead space loading on neuro-muscular and neuro-ventilatory coupling of the respiratory system during exercise in healthy adults: implications for dyspnea and exercise tolerance. Respir Physiol Neurobiol. 2011 Dec 15;179(2-3):219-26. doi: 10.1016/j.resp.2011.08.009. Epub 2011 Aug 22.

  • Duiverman ML, van Eykern LA, Vennik PW, Koeter GH, Maarsingh EJ, Wijkstra PJ. Reproducibility and responsiveness of a noninvasive EMG technique of the respiratory muscles in COPD patients and in healthy subjects. J Appl Physiol (1985). 2004 May;96(5):1723-9. doi: 10.1152/japplphysiol.00914.2003. Epub 2003 Dec 5.

  • Maarsingh EJ, van Eykern LA, Sprikkelman AB, Hoekstra MO, van Aalderen WM. Respiratory muscle activity measured with a noninvasive EMG technique: technical aspects and reproducibility. J Appl Physiol (1985). 2000 Jun;88(6):1955-61. doi: 10.1152/jappl.2000.88.6.1955.

  • Nava S, Ambrosino N, Rubini F, Fracchia C, Rampulla C, Torri G, Calderini E. Effect of nasal pressure support ventilation and external PEEP on diaphragmatic activity in patients with severe stable COPD. Chest. 1993 Jan;103(1):143-50. doi: 10.1378/chest.103.1.143.

  • Reilly CC, Jolley CJ, Ward K, MacBean V, Moxham J, Rafferty GF. Neural respiratory drive measured during inspiratory threshold loading and acute hypercapnia in healthy individuals. Exp Physiol. 2013 Jul;98(7):1190-8. doi: 10.1113/expphysiol.2012.071415. Epub 2013 Mar 15.

  • Ju C, Chen R. Factors associated with impairment of quadriceps muscle function in Chinese patients with chronic obstructive pulmonary disease. PLoS One. 2014 Feb 18;9(2):e84167. doi: 10.1371/journal.pone.0084167. eCollection 2014.

  • De Troyer A. Inspiratory elevation of the ribs in the dog: primary role of the parasternals. J Appl Physiol (1985). 1991 Apr;70(4):1447-55. doi: 10.1152/jappl.1991.70.4.1447.

  • Cardoso DM, Fregonezi GA, Jost RT, Gass R, Alberton CL, Albuquerque IM, Paiva DN, Barreto SS. Acute effects of Expiratory Positive Airway Pressure (EPAP) on different levels in ventilation and electrical activity of sternocleidomastoid and parasternal muscles in Chronic Obstructive Pulmonary Disease (COPD) patients: a randomized controlled trial. Braz J Phys Ther. 2016 Nov-Dec;20(6):525-534. doi: 10.1590/bjpt-rbf.2014.0190. Epub 2016 Sep 16.

  • Esteban A, Ferguson ND, Meade MO, Frutos-Vivar F, Apezteguia C, Brochard L, Raymondos K, Nin N, Hurtado J, Tomicic V, Gonzalez M, Elizalde J, Nightingale P, Abroug F, Pelosi P, Arabi Y, Moreno R, Jibaja M, D'Empaire G, Sandi F, Matamis D, Montanez AM, Anzueto A; VENTILA Group. Evolution of mechanical ventilation in response to clinical research. Am J Respir Crit Care Med. 2008 Jan 15;177(2):170-7. doi: 10.1164/rccm.200706-893OC. Epub 2007 Oct 25.

  • Thys F, Roeseler J, Reynaert M, Liistro G, Rodenstein DO. Noninvasive ventilation for acute respiratory failure: a prospective randomised placebo-controlled trial. Eur Respir J. 2002 Sep;20(3):545-55. doi: 10.1183/09031936.02.00287402.

  • Kohnlein T, Windisch W, Kohler D, Drabik A, Geiseler J, Hartl S, Karg O, Laier-Groeneveld G, Nava S, Schonhofer B, Schucher B, Wegscheider K, Criee CP, Welte T. Non-invasive positive pressure ventilation for the treatment of severe stable chronic obstructive pulmonary disease: a prospective, multicentre, randomised, controlled clinical trial. Lancet Respir Med. 2014 Sep;2(9):698-705. doi: 10.1016/S2213-2600(14)70153-5. Epub 2014 Jul 24.

  • Casanova C, Celli BR, Tost L, Soriano E, Abreu J, Velasco V, Santolaria F. Long-term controlled trial of nocturnal nasal positive pressure ventilation in patients with severe COPD. Chest. 2000 Dec;118(6):1582-90. doi: 10.1378/chest.118.6.1582.

  • Dreher M, Storre JH, Schmoor C, Windisch W. High-intensity versus low-intensity non-invasive ventilation in patients with stable hypercapnic COPD: a randomised crossover trial. Thorax. 2010 Apr;65(4):303-8. doi: 10.1136/thx.2009.124263.

  • Zhang J, Luo Q, Zhang H, Chen R. Effect of noninvasive proportional assist vs pressure support ventilation on neuroventilatory coupling in chronic obstructive pulmonary patients with hypercapnia. Intensive Care Med. 2014 Sep;40(9):1390-1. doi: 10.1007/s00134-014-3378-5. Epub 2014 Jun 27. No abstract available.

  • Passam F, Hoing S, Prinianakis G, Siafakas N, Milic-Emili J, Georgopoulos D. Effect of different levels of pressure support and proportional assist ventilation on breathing pattern, work of breathing and gas exchange in mechanically ventilated hypercapnic COPD patients with acute respiratory failure. Respiration. 2003 Jul-Aug;70(4):355-61. doi: 10.1159/000072897.

MeSH Terms

Conditions

Pulmonary Disease, Chronic Obstructive

Condition Hierarchy (Ancestors)

Lung Diseases, ObstructiveLung DiseasesRespiratory Tract DiseasesChronic DiseaseDisease AttributesPathologic ProcessesPathological Conditions, Signs and Symptoms

Study Officials

  • Rongchang Chen, professor

    The First Affiliated Hospital of Guangzhou Medical University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NON RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, OUTCOMES ASSESSOR
Purpose
OTHER
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

August 24, 2017

First Posted

August 31, 2017

Study Start

September 1, 2016

Primary Completion

March 7, 2017

Study Completion

July 2, 2017

Last Updated

September 1, 2017

Record last verified: 2017-08

Data Sharing

IPD Sharing
Will not share