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Note: This record shows only 22 elements of the WHO Trial Registration Data Set. To view changes that have been made to the source record, or for additional information about this trial, click on the URL below to go to the source record in the primary register.
Register: ClinicalTrials.gov
Last refreshed on: 14 November 2022
Main ID:  NCT03537924
Date of registration: 15/05/2018
Prospective Registration: Yes
Primary sponsor: University of Zurich
Public title: Effect of Acetazolamide on Right Heart Function During Exercise in Lowlanders Older Than 40 Years at Altitude
Scientific title: Effect of Acetazolamide on Right Heart Function During Exercise in Lowlanders Older Than 40 Years at Altitude: A Randomized, Placebo-controlled, Double-blind Parallel Trial
Date of first enrolment: June 1, 2018
Target sample size: 100
Recruitment status: Active, not recruiting
URL:  https://clinicaltrials.gov/show/NCT03537924
Study type:  Interventional
Study design:  Allocation: Randomized. Intervention model: Parallel Assignment. Primary purpose: Prevention. Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor).  
Phase:  Phase 4
Countries of recruitment
Kyrgyzstan
Contacts
Name:     Konrad E Bloch, MD
Address: 
Telephone:
Email:
Affiliation:  University Hospital, Zürich
Name:     Michael Furian, M
Address: 
Telephone:
Email:
Affiliation:  University Hospital, Zürich
Name:     Talant M Sooronbaev,, MD
Address: 
Telephone:
Email:
Affiliation:  National Center of Cardiology and Internal Medicine, Bishkek, Kyrgyzstan
Name:     Silvia Ulrich, MD
Address: 
Telephone:
Email:
Affiliation:  University Hospital, Zürich
Key inclusion & exclusion criteria

Inclusion Criteria:

- Healthy men and women, age 40-75 yrs, without any disease and need of medication.

- Born, raised and currently living at low altitude (<800m).

- Written informed consent.

- Kyrgyz ethnicity

Exclusion Criteria:

- Any active respiratory, cardiovascular or other disease requiring regular treatment or
being otherwise relevant for tolerance of hypoxia or altitude exposure.

- Any condition that may interfere with protocol compliance including current heavy
smoking (>20 cigarettes per day or >20 pack-years with active smoking during the last
10 years), regular use of alcohol.

- Allergy to acetazolamide and other sulfonamides.



Age minimum: 40 Years
Age maximum: 75 Years
Gender: All
Health Condition(s) or Problem(s) studied
Altitude Hypoxia
Intervention(s)
Drug: Placebo oral capsule
Drug: ACETAZOLAMIDE oral capsule
Primary Outcome(s)
pulmonary artery pressure (PAP) during exercise [Time Frame: Day 2 at 3100m]
Secondary Outcome(s)
cardiac Output (CO) during exercise [Time Frame: Day 2 at 3100m]
Oxygen saturation [Time Frame: Day 2 at 3100m]
pulmonary artery pressure during exercise [Time Frame: Day 2 at 760 m and 3100 m]
PAP/CO slope during exercise [Time Frame: Day 2 at 3100m]
PAP/CO slope during exercise [Time Frame: Day 2 at 760 m and 3100 m]
cardiac output during exercise [Time Frame: Day 2 at 760 m and 3100 m]
Oxygen saturation [Time Frame: Day 2 at 760 m and 3100 m]
Secondary ID(s)
2018-01-8/305F
Source(s) of Monetary Support
Please refer to primary and secondary sponsors
Secondary Sponsor(s)
National Center of Cardiology and Internal Medicine named after academician M.Mirrakhimov
Ethics review
Results
Results available:
Date Posted:
Date Completed:
URL:
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