Assessment of Thrombotic Status in Patients at Risk of Cardiovascular Thrombosis
6. februar 2019 oppdatert av: Prof Diana Gorog, East and North Hertfordshire NHS Trust
Patients with coronary artery disease (CAD) and atrial fibrillation (AF) are at increased risk of stroke and heart attack.
Such events are usually caused by increased stickiness of the blood causing a blood clot to block the artery (thrombus) in the heart or the brain.
The aim of this study is to assess the stickiness of the blood (global thrombotic status) in patients with CAD and AF at baseline and after clinical stabilisation to see how disease state and clinical treatments affect the stickiness of the blood (thrombotic status).
This will be a single centre study.
Patients diagnosed with CAD or AF will have a blood sample taken at baseline and after clinical stabilisation.
Blood stickiness will be tested with the Global Thrombosis Test.
The results will be evaluated to assess the effect of disease process and clinical state on blood stickiness to gain further understanding of this condition and form the basis for future studies aimed at identifying patients who are at high risk of future cardiovascular events, based on increased blood stickiness.
Studieoversikt
Status
Fullført
Forhold
Intervensjon / Behandling
Detaljert beskrivelse
Impaired thrombotic status is associated with adverse cardiovascular events. Patients with coronary artery disease (CAD) and atrial fibrillation (AF) are at increased risk of thrombotic events. It is not known whether thrombotic status differs in these patients, or how thrombotic status alters in response to clinical stabilisation with treatment.
The aim of this study is to assess the global thrombotic status (stickiness of the blood) in patients with coronary artery disease and atrial fibrillation at baseline and after clinical stabilisation.
This is a small, pilot, hypothesis-generating study. Design Single centre, hypothesis-generating study. Patients diagnosed with coronary disease (n=70) or atrial fibrillation (n=70) recruited from amongst in-patients or out-patients, will have a blood draw at presentation and after clinical stabilisation. Blood will be tested to assess global thrombotic status.
The recruitment period is 3 years.
Studietype
Observasjonsmessig
Registrering (Faktiske)
140
Kontakter og plasseringer
Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.
Studiesteder
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Herts
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Stevenage, Herts, Storbritannia, SG1 4AB
- East & North Herts NHS Trust (Queen Elizabeth II Hospital, Howlands, Welwyn Garden City, AL7 4HQ and Lister Hospital, Coreys Mill Lane, Stevenage, Herts , SG1 4AB -those two hospitals operate as one institution
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Deltakelseskriterier
Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
18 år og eldre (Voksen, Eldre voksen)
Tar imot friske frivillige
Nei
Kjønn som er kvalifisert for studier
Alle
Prøvetakingsmetode
Sannsynlighetsprøve
Studiepopulasjon
Patients diagnosed with coronary disease or atrial fibrillation.
Participants will be recruited from amongst in-patients or out-patients
Beskrivelse
Inclusion Criteria:
- Male and female participants aged 18 years or over.
- Patients diagnosed with CAD or AF and free of exclusion criteria below.
- Not actively using tobacco products (due to vasoactive and pro-aggregatory effects of nicotine).
- The participant is willing and able to understand the Subject Information Sheet and provide informed consent.
- The participant must agree to comply with the drawing of blood samples for the assessments.
Exclusion Criteria:
- Male and female participants aged < 18 years of age.
- Patients with impaired renal function eGFR <30 ml/min (since renal failure is associated with platelet function defect that may confound results).
- The participant has, in the opinion of the investigator, significant neurological, hepatic, renal, endocrine, cardiovascular, gastrointestinal, pulmonary, haemorrhagic metabolic or other disease likely to confound the study requirements or analyses.
- The participant has a gives a history of substance abuse or demonstrates signs or clinical features of active substance abuse or psychiatric disease.
- Alcohol consumption above recommended safe levels (i.e. more than 21 units per week for males, or more than 14 units per week for females) due to the potential effects of high alcohol levels on platelet reactivity.
- Any illness deemed significant by the investigator during the four (4) weeks preceding the screening period of the study.
- Any major bleeding diathesis or blood dyscrasia (platelets < 70 x 109/l, Hb <8 g/dl, INR>1.4, APTT> x 2UNL, leucocyte count< 3.5x 109/l, neutrophil count < 1x 109/l)
- Currently enrolled in an investigational device or drug trial.
Studieplan
Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.
Hvordan er studiet utformet?
Designdetaljer
Kohorter og intervensjoner
Gruppe / Kohort |
Intervensjon / Behandling |
|---|---|
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Patients
Patients diagnosed with coronary disease or atrial fibrillation.
All the patients will undergo Global Thrombosis Test.
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Patients will undergo the tests of thrombosis, before and after stabilisation of their cardiac condition.
Cardiac stabilisation will be provided by clinical cardiac teams, outside and independently from the study.
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Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
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The occlusion and lysis time.
Tidsramme: 1-3 months
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The occlusion and lysis timet.
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1-3 months
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Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
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no secondary outcome measures to be identified
Tidsramme: no secondary outcome measures to be identified
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no secondary outcome measures to be identified
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no secondary outcome measures to be identified
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Andre resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
no other outcome measures to be identified
Tidsramme: no other outcome measures to be identified
|
no other outcome measures to be identified
|
no other outcome measures to be identified
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Samarbeidspartnere og etterforskere
Det er her du vil finne personer og organisasjoner som er involvert i denne studien.
Etterforskere
- Hovedetterforsker: Diana A Gorog, Prof, East & North Herts NHS Trust
Studierekorddatoer
Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.
Studer hoveddatoer
Studiestart
1. januar 2013
Primær fullføring (Faktiske)
1. september 2018
Studiet fullført (Faktiske)
1. september 2018
Datoer for studieregistrering
Først innsendt
25. februar 2014
Først innsendt som oppfylte QC-kriteriene
25. februar 2014
Først lagt ut (Anslag)
27. februar 2014
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
8. februar 2019
Siste oppdatering sendt inn som oppfylte QC-kriteriene
6. februar 2019
Sist bekreftet
1. februar 2019
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- No 1.1; 4 Dec 2012
- REC 12/EE/0466 (Annen identifikator: NRES Committee East of England - Essex, UK)
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