Clinical trial NCT01753869: Timing of Hypertonic Saline Inhalation Relative to Airways Clearance in Cystic Fibrosis
Official title: Timing of Hypertonic Saline Inhalation Relative to Airways Clearance in Cystic Fibrosis
Study type: INTERVENTIONAL
Overall status: TERMINATED
Phase: NA
Conditions: Cystic Fibrosis
Lead sponsor: Belfast Health and Social Care Trust
Sponsor class: OTHER
Collaborators: name: Queen's University, Belfast
name: University of Ulster
First posted: 2012-12-20
Enrollment: 14
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Primary purpose: TREATMENT

Brief summary: Lung disease is the predominant cause of morbidity and mortality in Cystic Fibrosis (CF) with 80% of deaths resulting directly or indirectly from pulmonary disease. Abnormal airway clearance causes retention of mucus resulting in frequent chest infections. Physiotherapists use different techniques to help clear mucus from the lungs of patients with CF. Inhaled medications and airways clearance techniques (ACTs) are central to a CF patient's daily treatment and are often coordinated.

Burden of treatment is a common reason for non-adherence in this patient group, and streamlining of treatment timings is sought to optimize adherence whilst ensuring efficacy to an often complex daily regimen of inhaled bronchodilators, nebulizers and ACTs. A gap in the research exists as to the optimal timing of Hypertonic Saline (HTS) and ACT within the daily regimen. A study to show whether the timing of HTS around ACT is significant, can better inform patients and potentially allow more flexibility around their treatment regimen.

Lung Clearance Index (LCI) has shown good sensitivity to abnormalities in lung function compared with spirometry and has demonstrated a treatment effect in other trials. LCI may be a suitable tool therefore, to assess intervention strategies aimed at airways clearance in CF. This study aims to compare the effects ACTs after HTS inhalation versus ACTs during HTS inhalation as measured by LCI.

It is a randomized, crossover trial of ACTs after HTS inhalation compared with ACTs during HTS inhalation in adult CF patients during day 10-14 of a hospital admission for treatment of a pulmonary exacerbation. Patients will be randomized to receive 1 of the treatment session options on the first day and the reverse on the second day.

The primary objective of this study is to compare the change in LCI (a measure of lung function) at 90 minutes post treatment with ACTs after HTS inhalation compared with ACTs during HTS inhalation in adult CF patients.

LCI (lung clearance index) ACT (airway clearance technique) HTS (hypertonic saline)


Eligibility criteria: Inclusion Criteria:

1. Male or female patients with a documented diagnosis of CF aged ≥18 years.
2. Written informed consent.
3. At least day 10 - 14 of IV antibiotic therapy during a hospital admission for a pulmonary exacerbation.
4. Patients must be able to perform acceptable spirometric manoeuvres, according to the American Thoracic Society/ERS (ATS/ERS) standards (Miller, Hankinson et. al. 2005).
5. Patient with an FEV1% predicted of ≥ 40%predicted (Stanojevic, Wade et al. 2008).
6. Patients who are productive of sputum from screening visit to study visit 1 (≥10g over 24 hours).
7. Patients who have been prescribed HTS (Nebusal 7%) and have successfully completed a challenge test.
8. Any other chronic medication must have commenced therapy 4 weeks prior to screening and be willing to continue this therapy for the entire duration of the study.

Exclusion Criteria:

1. Day 1-9 of IV antibiotic therapy during a hospital admission.
2. Patients who are colonized with Burkholderia cepacia complex.
3. Patient who are HTS naive.
4. Patients who have an intolerance to HTS.
5. Patients who are currently participating in another study or have participated in another study with an investigational drug within one month of screening.
6. Clinically significant disease or medical condition other than CF or CF-related conditions that, in the opinion of the Investigator, would compromise the safety of the patient or the quality of the data.

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Primary outcomes:
measure: Lung Clearance Index
timeFrame: 90 minutes post treatment
Secondary outcomes:
measure: 24 hour sputum volume
timeFrame: 24 hours post treatment
Other outcomes:
measure: spirometry (FEV1% predicted; FEF25-75% [Forced expiratory flow 25-75] predicted)
timeFrame: 90 minutes post treatment
Locations:
city: Belfast
country: United Kingdom
facility: Belfast Health and Social Care Trust, Belfast City Hospital
Study officials:
affiliation: University of Ulster
name: Judy M Bradley, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Morrison L, Milroy S. Oscillating devices for airway clearance in people with cystic fibrosis. Cochrane Database Syst Rev. 2020 Apr 30;4(4):CD006842. doi: 10.1002/14651858.CD006842.pub5.
citation: O'Neill K, Moran F, Tunney MM, Elborn JS, Bradbury I, Downey DG, Rendall J, Bradley JM. Timing of hypertonic saline and airway clearance techniques in adults with cystic fibrosis during pulmonary exacerbation: pilot data from a randomised crossover study. BMJ Open Respir Res. 2017 Jan 12;4(1):e000168. doi: 10.1136/bmjresp-2016-000168. eCollection 2017.