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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT02711332
Other study ID # K@Home_1
Secondary ID
Status Completed
Phase N/A
First received November 24, 2015
Last updated March 11, 2016
Start date June 2015
Est. completion date June 2015

Study information

Verified date March 2016
Source Medical University of Graz
Contact n/a
Is FDA regulated No
Health authority Austria: Agency for Health and Food Safety
Study type Observational

Clinical Trial Summary

This is an open, single-centre trial investigating the impact of haemolysis after capillary blood collection to the measured potassium concentration in Plasma healthy subjects. Each subject will have four capillary blood collections on different fingers. Two on the right and two on the left hand. Additionally as a reference a venous blood collection will be conducted.


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.


Recruitment information / eligibility

Status Completed
Enrollment 22
Est. completion date June 2015
Est. primary completion date June 2015
Accepts healthy volunteers Accepts Healthy Volunteers
Gender Both
Age group 18 Years to 80 Years
Eligibility 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 Design

Observational Model: Case-Only


Related Conditions & MeSH terms


Intervention

Other:
capillary blood sampling
Each subject will have four capillary blood collections on different fingers. A reference venous blood collection will be conducted.
venous blood sampling
Each subject will have four capillary blood collections on different fingers. A reference venous blood collection will be conducted.

Locations

Country Name City State
n/a

Sponsors (2)

Lead Sponsor Collaborator
Medical University of Graz JOANNEUM RESEARCH Forschungsgesellschaft mbH

Outcome

Type Measure Description Time frame Safety issue
Primary Measured potassium concentration in capillary blood tests compared to venous blood tests. 1 hour No
Secondary Correlation from fHb and potassium 1 hour No
Secondary Degree of haemolysis in capillary blood tests compared to venous blood tests. 1 hour No
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