- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04189250
Comparison of the Automatized and the Optimized Carbon Monoxid Rebreathing Protocol
Comparison of the Automatized and the Optimized Carbon Monoxid Rebreathing Protocol Determining Hemoglobinmass With Capillary and Venous Blood Sampling
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
The optimized CO rebreathing protocol (oCO) will be compared against the automatized CO rebreathing protocol (aCO). Although theses two protocols using the same method, they show some relevant differences.
The oCO use a 2 minutes rebreathing period in a seated position and capillary blood is taken. The aCO use a 10 minutes rebreathing period in a supine position and venous blood samples are taken.
It is essential to know to what extent the aCO with capillary or venous blood sampling with different rebreathing time and position compared to oCO will influence the provided hemoglobin mass values. It is important to ensure the comparability of formely hemoglobinmass data measured using oCO with hemoglobinmass data measured using aCO for scientific research.
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Jon Wehrlin, Dr. scient., MSc.
- Phone Number: +41 58 467 61 25
- Email: jon.wehrlin@baspo.admin.ch
Study Contact Backup
- Name: Katja Kellenberger, MSc
- Phone Number: +41584661803 +41584661803
- Email: katja.kellenberger@baspo.admin.ch
Study Locations
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Magglingen, Switzerland
- Recruiting
- Swiss Federal Instistiution of Sport
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Contact:
- Jon Wehrlin
- Phone Number: +58 4676125
- Email: jon.wehrlin@baspo.admin.ch
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Contact:
- Katja Kellenberger
- Phone Number: +41792782109
- Email: katja.kellenberger@baspo.admin.ch
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Principal Investigator:
- Jon Wehrlin, Dr.
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- age 18 or higher
- healthy (self-reported)
- women and men
Exclusion Criteria:
- smoker
- implementation of high altitude training six weeks before and during the study
- sickness before and during the study
- blood donation 6 weeks before and during the study
- pregnancy
Study Plan
How is the study designed?
Design Details
- Primary Purpose: OTHER
- Allocation: RANDOMIZED
- Interventional Model: CROSSOVER
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
PLACEBO_COMPARATOR: Optimized carbonmonoxid rebreathing protocol (oCO)
2 min rebreathing period seated position capillary blood sampling
|
The automatized protocol (aCO) will be conducted with automated system OpCO of Detalo instruments.
The intended use of the OpCO Detalo instrument is to quantify hemoglobin mass in human.
The principle behind the machine is the widely used CO rebreathing technique.
The machine applies automatically the desired CO dose to the patient to determine hemoglobin mass.
The Detalo Instruments OpCO is certified conform to the following CE norms: Electromagentic compabilitiy: DIN EN 60601-1-2 and electrical Safety test: LVD 2014/35/EU.
|
ACTIVE_COMPARATOR: Automatized carbonmonoxide rebreathing protocol (aCO)
10 minutes rebreathing period supine position venous blood sampling
|
The automatized protocol (aCO) will be conducted with automated system OpCO of Detalo instruments.
The intended use of the OpCO Detalo instrument is to quantify hemoglobin mass in human.
The principle behind the machine is the widely used CO rebreathing technique.
The machine applies automatically the desired CO dose to the patient to determine hemoglobin mass.
The Detalo Instruments OpCO is certified conform to the following CE norms: Electromagentic compabilitiy: DIN EN 60601-1-2 and electrical Safety test: LVD 2014/35/EU.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Comparison of two CO rebreathing protocols (aCO and oCO)
Time Frame: During data collection (3 months)
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The aim is to assess the confidence interval of aCO with a ten min rebreathing period in supine position compared to oCO with a two min seated rebreathing period.
The mean difference in hemoglobin mass will be determined, using the aCO and oCO.
|
During data collection (3 months)
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Comparison of capillary and venous bloodsampling
Time Frame: During data collection (3 months)
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The aim is to compare capillary and venous blood samples collected simultaneously during aCO. The goal is to determine, if the site of blood sampling alters the measured carboxy-hemoglobin and hence the calculated hemoglobin mass. The outcome will be the confidence interval of mean difference measured with capillary and venous blood sampling. |
During data collection (3 months)
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Reliability of aCO and oCO
Time Frame: During data collection (3 months)
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The aim is the determination of the reliability of aCO and oCO by implementing double measurements for both protocols.
The coefficient of variation (CV) of hemoglobin mass measured for aCO and oCO will be a further outcome of the study.
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During data collection (3 months)
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Collaborators and Investigators
Investigators
- Principal Investigator: Jon Wehrlin, Dr. scient., MSc., Swiss Federal Institute of Sport Magglingen
Publications and helpful links
General Publications
- Schmidt W, Prommer N. The optimised CO-rebreathing method: a new tool to determine total haemoglobin mass routinely. Eur J Appl Physiol. 2005 Dec;95(5-6):486-95. doi: 10.1007/s00421-005-0050-3. Epub 2005 Oct 13.
- Fagoni N, Breenfeldt Andersen A, Oberholzer L, Haider T, Meinild Lundby AK, Lundby C. Reliability and validity of non-invasive determined haemoglobin mass and blood volumes. Clin Physiol Funct Imaging. 2018 Mar;38(2):240-245. doi: 10.1111/cpf.12406. Epub 2017 Jan 30.
- Siebenmann C, Keiser S, Robach P, Lundby C. CORP: The assessment of total hemoglobin mass by carbon monoxide rebreathing. J Appl Physiol (1985). 2017 Sep 1;123(3):645-654. doi: 10.1152/japplphysiol.00185.2017. Epub 2017 Jun 29.
- Steiner T, Wehrlin JP. Comparability of haemoglobin mass measured with different carbon monoxide-based rebreathing procedures and calculations. Scand J Clin Lab Invest. 2011 Feb;71(1):19-29. doi: 10.3109/00365513.2010.534174. Epub 2010 Nov 23.
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ANTICIPATED)
Study Completion (ANTICIPATED)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- COMP_aCO_oCO
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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