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Clinical Trial Details — Status: Terminated

Administrative data

NCT number NCT00710541
Other study ID # COPD-Study
Secondary ID COPD1
Status Terminated
Phase N/A
First received January 22, 2008
Last updated August 12, 2013
Start date October 2004
Est. completion date December 2012

Study information

Verified date August 2013
Source Deutsche Lungenstiftung e.V.
Contact n/a
Is FDA regulated No
Health authority Germany: Ethics Commission
Study type Interventional

Clinical Trial Summary

Non-invasive ventilation is frequently applied in patients with acute exacerbation of COPD, but no evidence exists about the effect of long term application/home application.

This study tests the hypothesis, that a daily, 6 hour application of non-invasive ventilation over one year improves survival, exercise capacity, and quality of life in patients with advanced stages of COPD.


Description:

The key problem of COPD (Chronic Obstructive Pulmonary Disease) is chronic inflammation and obstruction of the small airways. This results in a largely elevated flow resistance and work of breathing. The lungs develop enlarged air spaces (emphysema) with a reduction of alveoli and respiratory surface. Consequences are flattening of the diaphragm and alterations in the thoracic skeleton. COPD patients in advanced stages develop insufficiency of the muscular ventilatory pump. The ventilatory pump may decompensate, if the load of the muscles overruns their capacities. Besides that, an unphysiologically high proportion of the cardiac pump volume must be spent for the demands of the ventilatory muscles. Hypercapnia, and later hypoxaemia, are indicators of a decompensated ventilatory pump.

Theoretically, non-invasive ventilation (NIV) could be a treatment option for patients with advanced COPD and insufficiency of their ventilatory pump. Mechanical non-invasive ventilation provides support for the ventilatory muscles and might counterbalance the elevated intrinsic PEEP.

The physiologic and quality of life aspects of long term application on non-invasive ventilation (over at least one year) will be assessed in this study.


Recruitment information / eligibility

Status Terminated
Enrollment 195
Est. completion date December 2012
Est. primary completion date July 2011
Accepts healthy volunteers No
Gender Both
Age group 18 Years and older
Eligibility Inclusion Criteria:

- Moderate or severe COPD with insufficiency of the ventilatory pump (according to GOLD stage IV). Stable disease since four weeks or more prior to randomisation. The COPD might be caused by whatever reason (smoking, Alpha-1 antitrypsin deficiency, ....). Smokers can be included.

- Capillary PCO2 of 7 kPa (51,8 mmHg) or maximally 10 kPa (74 mmHg), combined with a pH of 7.35 or above. These gases must be measured after 30 minutes breathing room air in sitting position. Patients on long term oxygen treatment must inhale oxygen in their prescribed dose.

- Only patients in the age of 18 years or above can be included.

- Written information about all aspects of the study (available in German language) must be provided for each patient. Written informed consent prior to any measure of this protocol is necessary for inclusion.

Exclusion Criteria:

- Patients with a PCO2 of 10 kPa (74 mmHg) or above. These patients can be re-evaluated for inclusion after 4 weeks.

- Diseases of the lung or thorax besides COPD: Advanced pulmonary fibrosis, advanced bronchiectases, active tuberculosis, post tuberculosis syndrome, pneumonia, severe kyphoscoliosis, tracheostoma, neuromuscular diseases, or any other disorder, which might result in elevated PCO2.

- Patients on NIV.

- Body mass index of 35 kg/m² or above.

- Severe cardiac disease, NYHA IV, instable angina, severe cardiac arrhythmia, especially of ventricular origin (atrial fibrillation is not an exclusion criterion).

- Malignoma

- Disorders of the basal brain nerves with derangement of swallowing, or reflexes of swallowing and choking.

- Local derangement of the face, skin, tongue, upper airways, larynx and upper oesophagus.

- Severe chronic diseases except COPD, hindering the patient to follow the schedule of this study.

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Outcomes Assessor), Primary Purpose: Treatment


Related Conditions & MeSH terms


Intervention

Device:
ventilators designed for non invasive ventilation
Patients are advised to use the ventilator for non invasive ventilation as long term treatment for at least 6 hours per day over one year.

Locations

Country Name City State
Germany Medizinische Hochschule Hannover Hannover

Sponsors (1)

Lead Sponsor Collaborator
Deutsche Lungenstiftung e.V.

Country where clinical trial is conducted

Germany, 

References & Publications (1)

Köhnlein T, Criée CP, Köhler D, Welte T, Laier-Groeneveld G. [Multicenter study on "non-invasive ventilation in patients with severe chronic obstructive pulmonary disease and emphysema(COPD)"]. Pneumologie. 2004 Aug;58(8):566-9. German. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary all-cause mortality one year No
Secondary exercise capacity one year No
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