- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02711332
Investigating the Influence of Haemolysis on the Potassium Concentration After Capillary Blood Sampling
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
K@Home_1 a working package of the FFG project "K@Home - potassium home monitoring for patients with heart- and kidney insufficiency". In the project K@Home a potassium measuring system serveable by the patients even of the home monitoring should be developed.
Aim from K@Home is to allow an everyday home monitoring of the potassium value by the development of potassium-test stripe, like with the diabetes patients who supervise their blood sugar level by measurements with glucose-test stripe from a drop of capillary blood from the finger berry and with it the emergencies and hospital admissions to reduce or to prevent. It is fact that haemolysis has a strong influence on the measured potassium concentration. It is likely that by using capillary blood a haemolysis appears and therefore distorted potassium concentrations are measured.
In the study K@Home_1 it is a matter of evaluating, how high the degree of the haemolysis in capillary blood is, and in this fact to what extent leads to wrong potassium values. The results from this study will be a basic component for the sensor development.
After clarification the approval the Informed Consent is signed and the inclusion as well as exclusion criteria (incl. demography, concomitant medication and medical history) or vital parameters (blood pressure, pulse, size, weight), are raised. An urine-pregnancy test is also carried out for the exclusion of a pregnancy in women capable of bearing children. It is not necessary that the subjects seem sober on the study day.
With 22 healthy subjects capillary and venous blood is taken within the scope of one single study round. Blood is taken from the test persons by trained specialist staff of two fingertips of each hand (a total of four fingertips). The capillary blood sampling occurs in 200 µ l Lithium-Heparin Sarsted Microvettes and in each case the first drop of blood is rejected. To guarantee a light blood decrease without strong mechanical pressure, the hands are warmed up before the capillary sampling required with the help of an electric blanket or by warm water roughly on room temperature.
In addition 15 ml blood from the vein of a forearm is taken.
Study Type
Enrollment (Actual)
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Male or female
- Healthy
- Signed informed consent before any trial-related activities
Exclusion Criteria:
- Severe acute and/or chronic diseases
- Mental incapacity, unwillingness of language barriers precluding adequate understanding or cooperation
- Pregnancy or breastfeeding
- Any disease or condition which the investigator or treating physician feels would interfere with the trial or the safety of the subject
Study Plan
How is the study designed?
Design Details
- Observational Models: Case-Only
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Degree of Haemolysis
Each subject will have four capillary blood sampling on different fingers.
A reference venous blood sampling will be conducted.
|
Each subject will have four capillary blood collections on different fingers.
A reference venous blood collection will be conducted.
Other Names:
Each subject will have four capillary blood collections on different fingers.
A reference venous blood collection will be conducted.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Measured potassium concentration in capillary blood tests compared to venous blood tests.
Time Frame: 1 hour
|
1 hour
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Correlation from fHb and potassium
Time Frame: 1 hour
|
1 hour
|
Degree of haemolysis in capillary blood tests compared to venous blood tests.
Time Frame: 1 hour
|
1 hour
|
Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Julia Mader, Prof.Dr., Medical University of Graz
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- K@Home_1
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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