NCT05008211

Brief Summary

Domiciliary non-invasive ventilation (NIV) is a standard care for improving survival rates of selected patients with chronic hypercapnic respiratory failure (CHRF) and to improve the patients' hypercapnia, sleep quality, health-related quality of life (QoL). Adherence is an important factor affecting clinical effectiveness of domiciliary NIV. Our previous study has noted the associations between poor domiciliary NIV adherence and increased number of clinical adverse events (p = 0.004) and increased hospitalization requiring acute NIV salvage (p = 0.042). However, there are very limited studies on adherence to domiciliary NIV in patients with CHRF. The only interventional study was a single-group pre-test post-test study and lack of a theoretical framework for guiding the intervention. This study is employing an Information-Motivation-Behavioral skills (IMB) model-based intervention to improve inhalation adherence in a group of chronic obstructive pulmonary disease (COPD) patients.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
124

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Sep 2021

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

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

First Submitted

Initial submission to the registry

August 9, 2021

Completed
8 days until next milestone

First Posted

Study publicly available on registry

August 17, 2021

Completed
1 month until next milestone

Study Start

First participant enrolled

September 16, 2021

Completed
3.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 16, 2024

Completed
9 months until next milestone

Study Completion

Last participant's last visit for all outcomes

June 30, 2025

Completed
Last Updated

November 28, 2025

Status Verified

November 1, 2025

Enrollment Period

3.1 years

First QC Date

August 9, 2021

Last Update Submit

November 25, 2025

Conditions

Keywords

Chronic Hypercapnic Respiratory FailureChronic Obstructive Pulmonary DiseaseNoninvasive Ventilationhospital admissionrespiratory insufficiency

Outcome Measures

Primary Outcomes (4)

  • Domiciliary NIV adherence

    the records from the software fitted on the subject's NIV machine for the past two weeks will be reviewed to determine adherence or non-adherence, and assessed for the percentage of days with usage of at least 4 hours per night and the mean of daily use.

    baseline

  • Domiciliary NIV adherence

    the records from the software fitted on the subject's NIV machine for the past two weeks will be reviewed to determine adherence or non-adherence, and assessed for the percentage of days with usage of at least 4 hours per night and the mean of daily use.

    3rd month

  • Domiciliary NIV adherence

    the records from the software fitted on the subject's NIV machine for the past two weeks will be reviewed to determine adherence or non-adherence, and assessed for the percentage of days with usage of at least 4 hours per night and the mean of daily use.

    6th month

  • Domiciliary NIV adherence

    the records from the software fitted on the subject's NIV machine for the past two weeks will be reviewed to determine adherence or non-adherence, and assessed for the percentage of days with usage of at least 4 hours per night and the mean of daily use.

    12th month

Secondary Outcomes (13)

  • Venous bicarbonate (HCO3-) level

    baseline

  • Venous bicarbonate (HCO3-) level

    3rd month

  • Venous bicarbonate (HCO3-) level

    6th month

  • Chinese Pittsburgh Sleep Quality Index (CPSQI)

    baseline

  • Chinese Pittsburgh Sleep Quality Index (CPSQI)

    3rd month

  • +8 more secondary outcomes

Study Arms (2)

Intervention

EXPERIMENTAL

There will be a respiratory team, same as the usual care, responsible for patients requiring domiciliary NIV in the intervention group. The IMB model-based intervention of this study is a six-week program consisted of a one-hour face-to-face home visit in the first week, two 20-minute telephone follow-ups in the second and fourth weeks, and a half-hour face-to-face follow-up at hospital in the sixth week, and a telephone consultation hotline during office hours. There are three major components including information, motivation and behavioral skill interventions as proposed by the IMB model and will be deliberately arranged in the different sessions.

Other: Information-Motivation-Behavioral skills (IMB) model-based intervention

Control - usual care

PLACEBO COMPARATOR

There is a respiratory team of health care professionals responsible for patients requiring domiciliary NIV. The team is led by a Medical Consultant and with respiratory nurse(s) as team members who are responsible for assisting patients or their family to initiate domiciliary NIV and teaching the relevant technical skills. The nurse will provide an one-hour face-to-face session to introduce the choices of domiciliary NIV and teach the patient or his/her family on how to operate and maintain the ventilator, interface and accessories, and also how to handle the common problems such as leakage and pressure sore in hospital before discharge. Commercial leaflet or booklet according to the choice of ventilator with information of the ventilator, interface, accessories and the ventilator company will be provided to the patient.

Other: Control - usual care

Interventions

he nurse will provide an one-hour face-to-face session to introduce the choices of domiciliary NIV and teach the patient or his/her family on how to operate and maintain the ventilator, interface and accessories, and also how to handle the common problems

Control - usual care

Eligibility Criteria

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

You may qualify if:

  • (1) CHRF (i.e., PaCO2 ≥ 7 kPa or 52.5 mmHg) for at least 4 weeks, and
  • (2) using domiciliary NIV for ≥ 4 weeks, and
  • (3) non-adherer (i.e., used domiciliary NIV for \< 4 hours per night or \< 70% of days or with a mean daily use \< 5 hours per day in the last 2 weeks)

You may not qualify if:

  • (1) known psychiatric disorders except anxiety and depression; or
  • (2) diseases limiting life expectancy to ≤ one year; or
  • (3) active malignancy

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Department of Medicine and Geriatrics, United Christian Hospital

Hong Kong, Hong Kong

Location

Related Publications (41)

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Related Links

MeSH Terms

Conditions

Respiratory InsufficiencyPulmonary Disease, Chronic Obstructive

Condition Hierarchy (Ancestors)

Respiration DisordersRespiratory Tract DiseasesLung Diseases, ObstructiveLung DiseasesChronic DiseaseDisease AttributesPathologic ProcessesPathological Conditions, Signs and Symptoms

Study Officials

  • Doris SF Yu, PhD

    School of Nursing, LKS Faculty of Medicine, HKU

    PRINCIPAL INVESTIGATOR
  • Henry Poon, PhD

    United Christian Hospital

    STUDY CHAIR

Study Design

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

Study Record Dates

First Submitted

August 9, 2021

First Posted

August 17, 2021

Study Start

September 16, 2021

Primary Completion

October 16, 2024

Study Completion

June 30, 2025

Last Updated

November 28, 2025

Record last verified: 2025-11

Data Sharing

IPD Sharing
Will not share

Only study investigators and research assistants involved in the study will have access to the data.

Locations