Skip to main content
OpenTrials
Completed

NCT Number: NCT01483716

A Trial of Rehabilitation in Obesity Hypoventilation Syndrome (OHS)

Obesity is an escalating problem in the UK and a proportion of these patients have a condition known as Obesity Hypoventilation Syndrome (OHS). This syndrome is associated with symptoms of breathlessness, reduction in exercise capacity, fatigue and headaches. Previous research has shown that patients with this condition tend to use healthcare services more frequently and are often at risk of other diseases such as diabetes mellitus and high blood pressure. Currently, the mainstay of treatment is noninvasive ventilation (NIV), this is a mask ventilator that patients use overnight to improve oxygen levels and remove carbon dioxide (the waste gas of breathing), however this does not fully treat the underlying problem. The research group has shown that NIV helps improve activity and contributes to weight loss in this group of patients. The aim of this research will be to investigate the effect of an exercise and nutrition programme in addition to NIV on weight loss and activity levels compared to NIV alone.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Obesity Hypoventilation Syndrome Apnea Dyssomnias Hypoventilation Nervous System Diseases Nutrition Disorders Nutritional and Metabolic Diseases Obesity Overnutrition Overweight Respiration Disorders Respiratory Insufficiency Respiratory Tract Diseases Sleep Apnea Syndromes Sleep Apnea, Obstructive Sleep Disorders, Intrinsic Sleep Wake Disorders

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Guy's and St Thomas' NHS Trust

London, SE1 7EH, United Kingdom

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Diagnosis of OHS
  • Age >18
  • BMI > 30 kg/m2
  • Chronic hypercapnia , daytime PaCO2 >6kPa
  • FEV1/FVC ≥70%
  • Evidence of sleep disordered breathing on overnight studies
  • Tolerated NIV > 4hrs on 1st night during initiation of NIV

Exclusion criteria

  • Hypercapnic respiratory failure secondary to an identifiable cause other than OHS.
  • Age <18
  • Respiratory acidosis (pH <7.35)
  • Wheelchair/bedbound patients
  • Cognitive impairment which would prevent the subject from complying with trial protocol
  • Unstable coronary artery syndrome
  • Patients postintubation or decannulation following treatment requiring acute hypercapnic respiratory failure
  • Patients undergoing renal replacement therapy
  • Critical peripheral vascular disease
  • Disabling locomotor disability preventing participation in exercises involved in the rehabilitation programme
  • Pregnancy
  • Bariatric surgery planned within 3 months

Treatment and study plan

Rehabilitation

Behavioral

Primary outcomes

  1. % Weight loss

    Time frame: 12 months

Secondary outcomes

  1. 6 minute walk test

    Time frame: 12 months

Sponsors and collaborators

Lead sponsor

Guy's and St Thomas' NHS Foundation Trust

Other

Registry information

Important dates

Study start
2011
Primary completion
2014
Study completion
2015
First posted
Dec 1, 2011
Registry last updated
Aug 18, 2015

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Related clinical trials

Published trials that share one or more normalized conditions with this study.