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- Registre américain des essais cliniques
- Essai clinique NCT01604486
Natural Ischaemic Preconditioning Before First Myocardial Infarction
Natural Ischaemic Preconditioning Before First Myocardial Infarction: an Analysis of Prospectively Collected UK Electronic Primary Care Records Linked to the National Registry of Acute Coronary Syndromes
There is a sharp rise in the rate of coronary heart disease diagnoses and chest pain consultations in the 90 days before a first heart attack. There is some evidence that chest pain and angina symptoms in this period have a beneficial effect on heart attack outcomes in hospital and shortly after discharge. However, the available evidence is lacking in three key areas. First it is based on a retrospective patient report of symptoms after the heart attack has occurred; this means that patients are required to survive their heart attack and may make errors when reporting prior symptoms. Second, evidence for an effect on longer term outcomes, and coronary outcomes in particular (e.g. coronary death, further heart attacks) are unknown. Third, there is conflicting evidence that these effects might differ by age, in men and women, and according to treatment in hospital.
The investigators hope to address the limitations in the evidence by performing a large, prospective study of the occurrence, timing and effect of different types of symptoms and disease diagnoses occurring before heart attack.
The investigators hypothesise that prospectively collected, clinical measures of chest pain symptoms and cardiovascular diagnoses in primary care will have a beneficial effect on short term coronary mortality and may have a beneficial effect on longer term coronary outcomes.
Aperçu de l'étude
Statut
Type d'étude
Inscription (Réel)
Contacts et emplacements
Lieux d'étude
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London, Royaume-Uni, WC1E 7HT
- London School of Hygiene and Tropical Medicine
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
- Patients in GPRD practices which are deemed "up to standard" by GPRD criteria will be included if their practice agreed to be linked to the MINAP, HES and ONS datasets.
- Patients must have at least one year of GPRD "up to standard" registration before the date of first MI.
- Age over 18.
- First myocardial infarction occurring between 1st January 2003 and 31st December 2008, as recorded in the Hospital Episode Statistics data or the Myocardial Ischaemia National Audit Project.
Exclusion Criteria:
- Patients will be excluded if they do not fulfil one of the inclusion criteria.
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Cohortes et interventions
Groupe / Cohorte |
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MI without ischaemic preconditioning
Myocardial infarction unheralded by any previous cardiovascular disease diagnosis and without symptoms of chest pain in the previous 90 days.
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MI with longstanding disease
Patients with myocardial infarction who have had diagnosed atherosclerotic disease for longer than 90 days preceding infarct.
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MI with only chest pain
Patients with chest pain in the 90 days preceding MI, but with no prior atherosclerotic disease diagnoses.
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MI with disease and chest pain
Myocardial infarction occurring with previously diagnosed atherosclerotic disease of longer than 90 days' duration, but with chest pain in 90 days preceding infarct.
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Recurrent myocardial infarction
Délai: Up to seven years
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Myocardial infarction occurring thirty or more days after the study start date.
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Up to seven years
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Coronary mortality
Délai: Up to seven years
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Coronary mortality, using ONS mortality statistics (ICD-10 codes I20-I25)
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Up to seven years
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Collaborateurs et enquêteurs
Collaborateurs
Publications et liens utiles
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
- Ischémie
- Processus pathologiques
- Nécrose
- Ischémie myocardique
- Maladies cardiovasculaires
- Maladies vasculaires
- Maladies du cerveau
- Maladies du système nerveux central
- Maladies du système nerveux
- Artériosclérose
- Maladies artérielles occlusives
- La douleur
- Manifestations neurologiques
- Athérosclérose
- Douleur thoracique
- Infarctus du myocarde
- Infarctus
- Maladies cardiaques
- Maladie coronarienne
- Maladie artérielle périphérique
- Maladies vasculaires périphériques
- Angine de poitrine
- Troubles cérébrovasculaires
Autres numéros d'identification d'étude
- EH CALIBER IP
- 086091/Z/08/Z (Autre subvention/numéro de financement: Wellcome Trust)
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