Non-invasive Measurement of Hemoglobin in Retinal Arteries
NCT ID: NCT01025011
Last Updated: 2009-12-03
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
100 participants
OBSERVATIONAL
2008-03-31
2010-06-30
Brief Summary
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Detailed Description
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The purpose of this study is to test a new non-invasive tool to measure hemoglobin in retinal arteries. Healthy volunteers from the eye clinic and pregnant otherwise healthy patients of the gynecological department of the Triemli Hospital, Zurich, as well as anemic gynecological patients that show up for a check-up are included.
Hemoglobin will be quantified by a blood draw of a cubital vein. Using a Fundus Camera (Nidek AFC-230) pictures of the fundus will be taken from each study patient. Afterwards the study investigator selects a retinal artery of interest which will be used for measuring the hemoglobin concentration. Intensity of the green channel of the camera chip is determined with the aid of the law of Lambert-Beer.
Absolute Hemoglobin concentration is calculated in relation to the vessel volume.
Conditions
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Keywords
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Study Groups
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healthy volunteers, anemic patients
healthy volunteers from the eye and gynecology department pregnant patients with anemia
Fundus photography, cubital blood draw
blood draw from a cubital vein to measure hemoglobin concentration taking a fundus photography with a Nidek AFC-230, no pupil dilation needed
Interventions
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Fundus photography, cubital blood draw
blood draw from a cubital vein to measure hemoglobin concentration taking a fundus photography with a Nidek AFC-230, no pupil dilation needed
Eligibility Criteria
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Inclusion Criteria
* pregnant patients from the Triemli Hospital that came for a routine check up
* anemic patients of the same dept with various gynecological tumors
Exclusion Criteria
* poor fundus picture quality due to fixtion problems or too small pupil or media intransparency
* not willing to participate in a study
18 Years
90 Years
ALL
Yes
Sponsors
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Triemli Hospital
OTHER
Responsible Party
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Stadtpital Triemli (Triemli Hospital)
Principal Investigators
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Yves Robert, Prof MD
Role: PRINCIPAL_INVESTIGATOR
Triemli Hospital
Locations
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Stadtpital Zürich, Triemli Hospital
Zurich, Canton of Zurich, Switzerland
Countries
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Central Contacts
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Facility Contacts
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Yves Robert, Prof MD
Role: primary
Other Identifiers
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D20028132
Identifier Type: -
Identifier Source: org_study_id