Investigating the Effect of Nasal High Flow Oxygen Therapy on Regional Lung Function

Chronic Obstructive Pulmonary Disease Clinical Trial

— INVENT  

Official title:

Investigating the Effect of Nasal High Flow Oxygen Therapy on Regional Lung Function

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03821311
• Other study ID #: 38RC17.376
• Status: Completed
• Phase: N/A
• Start date: December 6, 2018
• Est. completion date: June 18, 2019

Study information

• Verified date: December 2019
• Source: University Hospital, Grenoble
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This study aims to assess the effect of nasal high flow oxygen therapy on regional function measured by volumetric computed tomography, in patients with chronic obstructive pulmonary disease.

Description:

Nasal high flow (NHF) is a non-invasive breathing therapy that is based on the delivery of heated and humidified air at flow rates that exceed peak inspiratory flow, via a large-caliber nasal cannula. It delivers a fraction of inspired oxygen (FiO2) from 21% to 100%, with a flow rate up to 60 L·min−1.

The therapy is used for a variety of disease conditions including chronic obstructive pulmonary disease (COPD). Patients with COPD frequently manifest flow limitation during resting tidal breathing, through dynamic compression of the airways, which is attributed to a loss of parenchymal tethering of the airways. In patients with severe COPD and respiratory failure, improved oxygenation and ventilation may reduce mortality. There are limited clinical data available in adult applications of NHF and on the effectiveness of NHF in patients with stable moderate or severe COPD.

The mechanisms through which NHF affects the respiratory system are still being investigated. Two of the proposed mechanisms of action of NHF therapy are the generation of 3-5 cmH20 positive airway pressure during expiration and washout of the nasopharyngeal dead space. Positive airway pressure has been shown to improve oxygenation, ventilation-perfusion matching and respiratory rates, while nasopharyngeal washout reduces the anatomical dead space and thereby improves alveolar ventilation.

Our working hypothesis is that positive nasopharyngeal pressure generated by NHF particularly during expiration can help maintain small peripheral airways patent, thereby reducing the amount of gas trapping.

Gas trapping can be quantified based on densitometric analysis of registered computerized tomography images obtained at high and low lung volumes.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 8
• Est. completion date: June 18, 2019
• Est. primary completion date: June 18, 2019
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Stable, moderate to severe COPD, defined as follows:

Moderate: FEV1/FVC < 0.7 or lower limit of normal, and 30 < FEV1 = 60 percent predicted; Severe: FEV1/FVC < 0.7 or lower limit of normal, and FEV1 = 30 percent predicted

• Indication for CT imaging as part of routine workup.

• Written informed consent signed

Exclusion Criteria:

• Acute disease condition such as infection, respiratory or cardiac failure

• Persons referred to in Articles L1151-5 to L1151-8 and L1122-1-2 of the French Public Health Code: Declared pregnant, parturient or lactating, persons deprived of their liberty by judicial or administrative decision, minors, adults who are legally protected or unable to express consent, etc.

• Evolving neoplastic disease

• Patient without social security health care coverage

• Subject in an exclusion period from another study

• Any contraindication to NHF such as nasal or upper airway bleeding, secretion, tumor, recent surgery; cervical, nasal or skull fracture.

Related Conditions & MeSH terms

• Chronic Obstructive Pulmonary Disease
• Dynamic Volumetric Computed Tomography
• Lung Diseases, Obstructive
• Nasal High Flow
• Pulmonary Disease, Chronic Obstructive

Intervention

Radiation:
• Computed tomography
End-inspiratory/end-expiratory CT is repeated 3 times corresponding to the 3 studied conditions: At baseline, through expiratory resistive loading using an adjustable PEP mask, and after 5 min of nasal high flow therapy at 25 L/min.

Locations

Country	Name	City	State
France	University Hospital Grenoble	Grenoble	Isère

Sponsors (1)

Lead Sponsor	Collaborator
University Hospital, Grenoble

Country where clinical trial is conducted

France, 

References & Publications (14)

Corley A, Caruana LR, Barnett AG, Tronstad O, Fraser JF. Oxygen delivery through high-flow nasal cannulae increase end-expiratory lung volume and reduce respiratory rate in post-cardiac surgical patients. Br J Anaesth. 2011 Dec;107(6):998-1004. doi: 10.1093/bja/aer265. Epub 2011 Sep 9. — View Citation

Curley GF, Laffy JG, Zhang H, Slutsky AS. Noninvasive respiratory support for acute respiratory failure-high flow nasal cannula oxygen or non-invasive ventilation? J Thorac Dis. 2015 Jul;7(7):1092-7. doi: 10.3978/j.issn.2072-1439.2015.07.18. — View Citation

Frat JP, Thille AW, Mercat A, Girault C, Ragot S, Perbet S, Prat G, Boulain T, Morawiec E, Cottereau A, Devaquet J, Nseir S, Razazi K, Mira JP, Argaud L, Chakarian JC, Ricard JD, Wittebole X, Chevalier S, Herbland A, Fartoukh M, Constantin JM, Tonnelier JM, Pierrot M, Mathonnet A, Béduneau G, Delétage-Métreau C, Richard JC, Brochard L, Robert R; FLORALI Study Group; REVA Network. High-flow oxygen through nasal cannula in acute hypoxemic respiratory failure. N Engl J Med. 2015 Jun 4;372(23):2185-96. doi: 10.1056/NEJMoa1503326. Epub 2015 May 17. — View Citation

Fricke K, Tatkov S, Domanski U, Franke KJ, Nilius G, Schneider H. Nasal high flow reduces hypercapnia by clearance of anatomical dead space in a COPD patient. Respir Med Case Rep. 2016 Aug 26;19:115-7. doi: 10.1016/j.rmcr.2016.08.010. eCollection 2016. — View Citation

Galbán CJ, Han MK, Boes JL, Chughtai KA, Meyer CR, Johnson TD, Galbán S, Rehemtulla A, Kazerooni EA, Martinez FJ, Ross BD. Computed tomography-based biomarker provides unique signature for diagnosis of COPD phenotypes and disease progression. Nat Med. 2012 Nov;18(11):1711-5. doi: 10.1038/nm.2971. Epub 2012 Oct 7. — View Citation

Gibson GJ, Loddenkemper R, Lundbäck B, Sibille Y. Respiratory health and disease in Europe: the new European Lung White Book. Eur Respir J. 2013 Sep;42(3):559-63. doi: 10.1183/09031936.00105513. — View Citation

Kybic J, Unser M. Fast parametric elastic image registration. IEEE Trans Image Process. 2003;12(11):1427-42. doi: 10.1109/TIP.2003.813139. — View Citation

Mueller RE, Petty TL, Filley GF. Ventilation and arterial blood gas changes induced by pursed lips breathing. J Appl Physiol. 1970 Jun;28(6):784-9. — View Citation

O'Donnell DE, Sanii R, Anthonisen NR, Younes M. Expiratory resistive loading in patients with severe chronic air-flow limitation. An evaluation of ventilatory mechanics and compensatory responses. Am Rev Respir Dis. 1987 Jul;136(1):102-7. — View Citation

Pisani L, Vega ML. Use of Nasal High Flow in Stable COPD: Rationale and Physiology. COPD. 2017 Jun;14(3):346-350. doi: 10.1080/15412555.2017.1315715. Epub 2017 May 1. Review. — View Citation

Riera J, Pérez P, Cortés J, Roca O, Masclans JR, Rello J. Effect of high-flow nasal cannula and body position on end-expiratory lung volume: a cohort study using electrical impedance tomography. Respir Care. 2013 Apr;58(4):589-96. doi: 10.4187/respcare.02086. — View Citation

Spahija J, de Marchie M, Grassino A. Effects of imposed pursed-lips breathing on respiratory mechanics and dyspnea at rest and during exercise in COPD. Chest. 2005 Aug;128(2):640-50. — View Citation

Stubbing DG, Pengelly LD, Morse JL, Jones NL. Pulmonary mechanics during exercise in subjects with chronic airflow obstruction. J Appl Physiol Respir Environ Exerc Physiol. 1980 Sep;49(3):511-5. — View Citation

Vestbo J, Hurd SS, Agustí AG, Jones PW, Vogelmeier C, Anzueto A, Barnes PJ, Fabbri LM, Martinez FJ, Nishimura M, Stockley RA, Sin DD, Rodriguez-Roisin R. Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease: GOLD executive summary. Am J Respir Crit Care Med. 2013 Feb 15;187(4):347-65. doi: 10.1164/rccm.201204-0596PP. Epub 2012 Aug 9. Review. — View Citation

* Note: There are 14 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Gas trapping (expressed as percent total lung volume)		30 minutes
Secondary	Regional lung ventilation distribution	Regional change in attenuation between end-expiration and end-inspiration, based on CT image	30 minutes
Secondary	Coefficient of variation of regional lung ventilation		30 minutes