Impact of Intermittent Hypoxia on the Function of the Phagocytes

• Conditions: Obstructive Sleep Apnea of Adult

• Registration Number: NCT03618719
• Lead Sponsor: Taipei Veterans General Hospital, Taiwan

Brief Summary

Patients with treatment-naive obstructive sleep apnea (OSA) who need continuous positive airway pressure (CPAP) therapy on clinical basis are included as well as healthy controls without OSA. 15 cc peripheral venous blood is drawn on the date of diagnosis of OSA and 3-6 months after CPAP therapy. Granulocytes are harvested and tested for its function, such as phagocytosis, reactive oxygen species (ROS) production and bacteria-killing ability.

Detailed Description

Patients with treatment-naive obstructive sleep apnea (OSA) who need continuous positive airway pressure (CPAP) therapy on clinical basis are included. Healthy controls without OSA are enrolled, too. 15 cc peripheral venous blood is drawn on the date of diagnosis of OSA and 3-6 months after CPAP therapy (not given to controls). Granulocytes are harvested and tested for its function, such as phagocytosis, reactive oxygen species (ROS) production and bacteria-killing ability.

Study Timeline

• Study First Submitted: 2018-08-02
• Study First Submitted QC: 2018-08-02
• Study First Posted: 2018-08-07
• Status Verified: 2019-03
• Study Start: 2019-03-05
• Last Update Submitted: 2019-03-10
• Last Update Posted: 2019-03-12
• Primary Completion: 2019-07-03
• Study Completion: 2019-07-03

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 40

Inclusion Criteria

<OSA group> 1. Patients with treatment-naive obstructive sleep apnea (OSA) who need continuous positive airway pressure (CPAP) therapy on clinical basis 2. aged 20 years or older 3. Apnea-hypopnea index (AHI) at least 15/hour 4. Willing to participate this study <Control group>

1. Healthy controls without OSA
2. aged 20 years or older
3. AHI less than 5/hour

Exclusion Criteria

<OSA group>

1. OSA patients who do not need continuous positive airway pressure (CPAP) therapy

2. OSA Patients have ever received CPAP or other treatment

3. aged less than 20 years

4. AHI at least 15/hour

5. Not willing to participate this study <Control group>

6. Apnea-hypopnea index (AHI) equals to or more than 5/hour 2. aged less than 20 years 3. Not willing to participate this study

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Granuolocyte function	6-month	Granuolocyte function, such as such as phagocytosis, reactive oxygen species (ROS)

Trial Locations

Locations (1)

Chest department, Taipei Veteran General Hospital; 🇨🇳 Taipei City, Taiwan