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- Klinische proef NCT04094155
Retinal Vessel Analysis (rGA) at the Patient Bed in the Context of Non-traumatic Subarachnoid Haemorrhage
A subarachnoid hemorrhage occurs in about 10 out of 100,000 people each year. This bleeding leads to irritation and constriction of blood vessels in the brain (vasospasm) in two out of three people affected within four to 21 days and thus to reduced blood flow. This can lead to a stroke and serious damage. In order to be able to diagnose and treat a constriction of the blood vessels at an early stage, there are various examination methods which, however, have various disadvantages such as radiation exposure of the patient, low sensitivity or high effort. Therefore, the prediction and timely therapy of vascular constrictions is currently only successful in a few cases before the reduced blood flow has already led to irreversible damage.
The aim of this study is to investigate whether the so-called retinal vascular analysis can be used in addition to previous standard examinations for the early detection of diseases of the cerebral blood circulation. This method has few side effects and has been successfully used for 50 years to examine the blood circulation in the eye.
Studie Overzicht
Toestand
Interventie / Behandeling
Studietype
Inschrijving (Verwacht)
Fase
- Niet toepasbaar
Contacten en locaties
Studie Locaties
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Aachen, Duitsland, 52074
- Werving
- Uniklinik RWTH Aachen, Klinik für Neurochirurgie
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Contact:
- Gerrit A Schubert, Prof. Dr.
- Telefoonnummer: +49 2418088480
- E-mail: gschubert@ukaachen.de
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- Female or male patient, age ≥ 18 years
- Inpatient stay in the clinic
- Written informed consent for participation in the study prior to beginning of treatment
- Written consent for further evaluation of the images and for the scientific publication of the study results
- Non-traumatic subarachnoid haemorrhage confirmed by computer tomography or magnetic resonance tomography or cerebrospinal fluid puncture (collection of nerve water from the lower part of the lumbar spine
Exclusion Criteria:
- Female or male patient < 18 years
- Pregnancy, Lactation
- Lack of written consent to participate in the study and to further evaluate the image material collected
- Known allergy to MS eye drops (active substance: phenylephrine/tropicamide
- Narrow chamber angle, narrow angle glaucoma, Terson syndrome (if it makes retinal vascular imaging impossible
- Persons in a dependency or employment relationship with the investigator
- Persons who are accommodated in a facility by judicial or administrative order
- Receipt and intake of a study drug within the last 30 days
- Supine position in bed
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Diagnostisch
- Toewijzing: NVT
- Interventioneel model: Opdracht voor een enkele groep
- Masker: Geen (open label)
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
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Experimenteel: Retinal fundoscopy
Retinal vascular analysis by retinal fundoscopy over a 3 week period in stationary patients after aneurysmatic subarachnoid hemorrhage
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Retinal fundoscopy over a 3 week period in stationary patients after aneurysmatic subarachnoid hemorrhage
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Clinical Progression of Delayed cortical ischemia
Tijdsspanne: 21 days
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Delayed cortical ischemia as ischemia in cranial computer tomography or cranial magnetic resonance tomography that occurred later than 24 hours after admission to hospital
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21 days
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Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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Occurrence of delayed ischemic neurological deficit (DIND)
Tijdsspanne: 21 days
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21 days
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Angiographic vasospasm
Tijdsspanne: 7 days
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Occurence of an angiographic vasospasm measured by:
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7 days
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Metabolic deficiency supply
Tijdsspanne: 21 days
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Measured as change in lactate-pyruvate ratio in microdialysis
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21 days
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Metabolic deficiency supply
Tijdsspanne: 21 days
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Measured as change in reduction in parenchymal oxygen partial pressure measurement
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21 days
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Relative underperfusion
Tijdsspanne: 21 days
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Measured by Perfusion-Computer-Tomography
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21 days
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Objective degree of recovery
Tijdsspanne: 3 Month
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Measured by Glasgow-Outcome-Scale; Scale by which patients who have experienced brain damage can be divided into 5 groups that allow to describe the degree of recovery in a standardized and objective manner (1: death; 2: vegetative condition, the patient is unresponsive.
The higher cognitive functions are extinguished; 3: severe disability, the patient is conscious, but cannot cope with normal everyday activities without help; 4: moderate disability, the patient can live largely independently, but is not able to pursue a normal working life; 5: light to no handicap, the neurological, physical, and psychological deficits are so low that the patient can participate normally in social and economic activities)
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3 Month
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Medewerkers en onderzoekers
Sponsor
Onderzoekers
- Hoofdonderzoeker: Gerrit A Schubert, Prof. Dr., Principal Investigator
Publicaties en nuttige links
Studie record data
Bestudeer belangrijke data
Studie start (Werkelijk)
Primaire voltooiing (Verwacht)
Studie voltooiing (Verwacht)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- 14-061
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct
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