Working…
ClinicalTrials.gov
ClinicalTrials.gov Menu

Registry on the Treatment of Central and Complex Sleep-Disordered Breathing With Adaptive Servo-Ventilation (READ-ASV)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT03032029
Recruitment Status : Active, not recruiting
First Posted : January 26, 2017
Last Update Posted : April 2, 2021
Sponsor:
Collaborators:
CRI-The Clinical Research Institute GmbH
University Hospital Regensburg
Information provided by (Responsible Party):
ResMed

Brief Summary:
Phase 1: The European ASV Registry (short name) will investigate the use of Adaptive Servo-Ventilation in non-heart failure conditions. The purpose is to examine the effects of ASV on quality of life, daytime symptoms and sleep, to describe usage patterns of ASV with regards to patient characteristics and to document adverse events related to therapy for a therapy safety analysis. A pilot phase will enrol at least 200 patients to test the feasibility of the registry. After the pilot phase will be completed and an intermediate data analysis had been performed, the registry will be expanded over several countries across Europe with the goal of enrolling up to 800 patients over a period of 5 years. Phase 2: The READ-ASV Registry (short name) will investigate the use of Adaptive Servo-Ventilation in non-heart failure conditions. The purpose is to examine the effects of ASV on quality of life, daytime symptoms and sleep, to describe usage patterns of ASV with regards to patient characteristics and to document adverse events related to therapy for a therapy safety analysis.

Condition or disease Intervention/treatment
Central Sleep Apnea Complex Sleep Apnea Obstructive Sleep Apnea Mixed Sleep Apnea Device: Adaptive Servo-Ventilation

Detailed Description:
Phase 1: The collection of data will be performed during the course of clinical routine. In regular clinical practice, a first control visit (i.e. Follow-up number one) should occur during the first 6 months. Further follow-up visits are only indicated when the patient is reporting problems during the course of therapy. We recommend FU visit at least once year (after the first routine FU visit). Each patient will be included for 6 months, the total duration of phase 1 of the registry. Phase 2: The pilot phase 1 enrolled over 200 patients. After completion of the pilot phase the registry expands to 1 additional country in Europe with the goal of enrolling up to 800 patients over a period of 4 years. The collection of data will be performed during the course of clinical routine. In regular clinical practice, a first control visit (i.e. Follow-up number one) should occur after the first 12 months of therapy use. Further follow-up visits are only indicated when the patient is reporting problems during the course of therapy. Each patient will be included for a maximum of 15 months, whereas serious events will be tracked throughout the total duration of phase I and II of the registry.

Layout table for study information
Study Type : Observational [Patient Registry]
Actual Enrollment : 847 participants
Observational Model: Cohort
Time Perspective: Prospective
Target Follow-Up Duration: 12 Months
Official Title: Registry on the Treatment of Central and Complex Sleep-Disordered Breathing With Adaptive Servo-Ventilation
Actual Study Start Date : September 5, 2017
Estimated Primary Completion Date : June 30, 2022
Estimated Study Completion Date : July 31, 2022

Resource links provided by the National Library of Medicine



Intervention Details:
  • Device: Adaptive Servo-Ventilation
    Adaptive Bi-Level positive airway pressure with a targeted minute ventilation and auto-adjusting expiratory pressure level.


Primary Outcome Measures :
  1. Quality of Life, assessed with the Functional Outcomes of Sleep Questionnaire (FOSQ) by comparing the score at baseline with the 12 months follow-up. [ Time Frame: 12 months ]
    The Functional Outcomes of Sleep Questionnaire had been developed to comprehensively capture the impact of sleeping disorders in relevant daily activities as for instance general activity, vigilance, intimacy, fitness and social life.

  2. Phase 2: Quality of Life, assessed with the Functional Outcomes of Sleep Questionnaire (FOSQ) by comparing the score at baseline with the follow-up after 12 months. [ Time Frame: Baseline to 12 months ]
    The Functional Outcomes of Sleep Questionnaire had been developed to comprehensively capture the impact of sleeping disorders in relevant daily activities as for instance general activity, vigilance, intimacy, fitness and social life. The FOSQ consists of 30 questions, answer options ranging from 4 (no problems) to 1(severe problems) or 0(not applicable) adding up to a total score between 5(worst functional status)-20(best functional status).


Secondary Outcome Measures :
  1. Daytime symptoms assessed with the EuroQoL (EQ-5D) by comparing the answers at baseline with answers at the follow-up at 12 months. [ Time Frame: 12 months ]
    The EQ-5D is a standardized questionnaire used to measure the health of patients. It is applicable in a large number of conditions and treatments and provides a simple descriptive profile and a single index value to define a state of health (mobility, self-care ability, activities, discomfort, anxiety).

  2. Daytime sleepiness assessed with the Epworth Sleepiness Scale (ESS) by comparing the score at baseline with the follow-up after 12 months. [ Time Frame: 12 months ]
    The Epworth or Epworth Sleepiness Scale questionnaire assesses excessive daytime sleepiness. It determines the probability of falling asleep in the context of 8 common situations in daily life. The patient self assesses, on a level of 0 to 3, drowsiness over the past few weeks. The maximum total score is 24.

  3. Quality of Sleep assessed with the Pittsburgh Sleep Quality Index (PSQI) at baseline compared with the follow-up after 12 months. [ Time Frame: 12 months ]

    The PSQI includes 19 self-assessment questions and 5 questions asked to the spouse or roommate (if any).The 19 self-assessment questions combine to give 7 components of the overall score, with each component receiving a score of 0-3.

    A score of 0 indicates that there is no difficulty while a score of 3 indicates the existence of severe difficulties. The 7 components of the score add up to give an overall score ranging from 0 to 21 points, 0 meaning that there is no difficulty, and 21 indicating difficulties.


  4. Therapy compliance assessed by the hours of usage per night. [ Time Frame: 6 months ]
    Usually, compliance is defined as device usage of ˃4h/night in ˃70% of nights to see effects on the Status of health. However, a usage of ≥ 3 hours might improve a patient's outcome: Data on úsage of ASV and outcomes is scarce. Since the aim of the study is to assess compliance, the data of the device has to be carefully analysed in connection with the outcomes.

  5. Apnea-Hypopnea-Index assessed by the number of Apneas and hypopneas per hour. [ Time Frame: 6 months ]
    The number of apneas and hypopneas per hour will be counted during the total time of sleep of a Patient, added up and divided by the hours of sleep. The result is an index, which indicates mild sleep apnea (AHI between 5-15 Events/hour), moderate sleep apnea (15-30 Events per hour) or severe sleep apnea (more than 30 Events per hour).

  6. Central Apnea Index assessed by the number of central apneas per hour. [ Time Frame: 6 months ]
    The number of central apneas - where the respiratory effort stops - per hour will be counted during the total time of sleep of a patient, added up and divided by the hours of sleep. The result is an index, which indicates mild central sleep apnea (AHI below 5 Events/hour), moderate central sleep apnea (5-15 Events per hour) or severe central sleep apnea (more than 15 Events per hour).

  7. Safety of ASV therapy assessed by documenting the number of adverse Events and the number of hospitalizations at the Overall end of the study. [ Time Frame: 6 months ]
    Adverse Events of Special Interest (e.g. Skin irritation or wound, Skin rashes, Conjunctivitis, Dryness of the upper airways, Therapy intolerance (pressure), Mask issues, leaks,Technical problems of the device) will be document as well as the number of Hospital stays during the study period.

  8. Phase 2: Daytime symptoms assessed with the EuroQoL (EQ-5D) by comparing the answers at baseline with answers at the follow-up at 12 months. [ Time Frame: Baseline to 12 months ]
    The EuroQoL-5Dimension is a standardized questionnaire used to measure the health of patients. It is applicable in a large number of conditions and treatments. It defines 5 health-states: mobility, self-care ability, activities, discomfort, anxiety. The states of health will be described by rating them from 1(no problems) to 5 (extreme problems). The outcomes can either be displayed as mean (+/-SD) or percentages of patients rating their health state with a certain score. The combined 5 heath-states rating (e.g.11111, 12345 etc.) may be converted to a single index value (index value calculator must be ordered from the manufacturer. The EQ-5D comprises a visual analogue scale ranging from 0=worst health to 100=best health.

  9. Phase 2: Daytime sleepiness assessed with the Epworth Sleepiness Scale (ESS) by comparing the score at baseline with the follow-up after 12 months. [ Time Frame: Baseline to 12 months ]
    The Epworth or Epworth Sleepiness Scale questionnaire assesses excessive daytime sleepiness. It determines the probability of falling asleep in the context of 8 common situations in daily life. The patient self-assesses, on a level of 0 to 3, drowsiness over the past few weeks. The maximum total score is 24 (worst level of daytime sleepiness).

  10. Phase 2: Therapy compliance assessed by the hours of usage per night. [ Time Frame: Baseline to 12 months ]
    Usually, compliance is defined as device usage of ˃4h/night in ˃70% of nights to see effects on the Status of health. However, a usage of ≥ 3 hours might improve a patient's outcome: Data on usage of ASV and outcomes is scarce. Since the aim of the study is to assess compliance, the data of the device has to be carefully analyzed in connection with the outcomes.

  11. Phase 2: Rate of hospitalizations for cardiovascular or respiratory cause per year of follow-up. [ Time Frame: 12 months ]
    All unplanned hospitalizations will be recorded as serious adverse events and assessed for cause of hospitalisation: cardiovascular or respiratory cause.

  12. Phase 2: Rate of all-cause deaths per year of follow-up. [ Time Frame: 12 months ]
    All deaths will be recorded. Cause of death will be assessed through the documentation in the study centers.



Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Layout table for eligibility information
Ages Eligible for Study:   18 Years to 99 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
The registry shall include adult individuals with a prescription of ASV therapy. Indications are sleep-related breathing disorders, including obstructive, central or complex sleep apnea.
Criteria

Inclusion Criteria:

  • Patients over ≥18 years of Age
  • Prescription of ResMed AirCurve 10 CS PaceWave or S9 AutoSet CS PaceWave for treatment of ASV
  • Naive to ASV Treatment
  • Able to fully understand information on data protection and provide written informed consent

Exclusion Criteria:

- Heart Failure (HF) with a Left Ventricular Ejection Fraction (LVEF) <45% and CSA >50% central apneas of all apneas

Phase 2: Inclusion Criteria:

  • ≥ 18 years old.
  • Indication for treatment with ASV according to applicable medical guidelines.
  • Use of eligible ResMed devices for treatment with ASV according to the Instructions For Use of the corresponding device.
  • Naive to ASV treatment (max. 7 days between start of ASV therapy and enrolment).
  • Able to fully understand information on data protection and provide written informed consent for use of their medical data.

Phase 2: Exclusion Criteria:

  • Chronic, symptomatic heart failure (NYHA 2-4) with reduced left ventricular ejection fraction (LVEF ≤ 45%) and moderate to severe predominant central sleep apnea.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03032029


Locations
Show Show 29 study locations
Sponsors and Collaborators
ResMed
CRI-The Clinical Research Institute GmbH
University Hospital Regensburg
Additional Information:
Layout table for additonal information
Responsible Party: ResMed
ClinicalTrials.gov Identifier: NCT03032029    
Obsolete Identifiers: NCT04331821
Other Study ID Numbers: READ-ASV_Reg_Protoc_170404
Protocol 2019-04-16 ( Other Identifier: ResMed )
First Posted: January 26, 2017    Key Record Dates
Last Update Posted: April 2, 2021
Last Verified: April 2021
Additional relevant MeSH terms:
Layout table for MeSH terms
Apnea
Sleep Apnea Syndromes
Sleep Apnea, Obstructive
Sleep Apnea, Central
Respiration Disorders
Respiratory Tract Diseases
Signs and Symptoms, Respiratory
Sleep Disorders, Intrinsic
Dyssomnias
Sleep Wake Disorders
Nervous System Diseases