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Clinical Trial Summary

The goal of this observational study is to determine the impact of the combined use of cardiac rhythm recording devices, biomarkers, echocardiogram, and Magnetic Resonance Imaging (MRI) on the early detection of AF, silent stroke, and cognitive impairment in subjects older than 65 years at high risk. The main questions it aims to answer are: - The early detection of AF, allowing the establishment of preventive measures, will avoid its main complications, especially strokes and cognitive impairment or dementia, in patients at high risk? - Will cardiac rhythm monitoring devices be useful in the early detection of AF in patients at high risk? Participants will undertake an initial evaluation through an echocardiogram (to detect atrial dysfunction), cranial MRI (to detect silent strokes), plasma/serum collection to determine biomarkers, and a complete clinical assessment (including electrocardiogram, and scales for measurement of cognitive and functional status). The clinical evaluation will be repeated every 6 months and will allow the recording of the date of occurrence of the study events. In addition, annually, patients will be subjected to cardiac rhythm monitoring by electronic devices with the aim of improving AF detection.

Clinical Trial Description

Design: Multicenter, prospective cohort study Setting and study population: Patients will be recruited from the usual consultations in six Primary Health Care Centers (PHCC) managed by the Catalan Health Institute (ICS), two in Tarragonés county and four in Terres de l'Ebre county, both situated in Tarragona (South Catalonia, Spain). Study subjects: Patients between 65-85 years old at high risk of FA who are attended at study' PHCCs, consent to participate, and meet inclusion criteria. Follow-up: Initially all included patients will undertake echocardiography, biomarkers, and cranial /brain Magnetic resonance imaging (MRI). Cardiac monitoring (for 14 days) with two different electronic devices will be performed once every year during the study period. Every six-month electrocardiogram and complete clinical assessment will be done to register risk factors and comorbidities, new cardiovascular events, anthropometric parameters (arterial pressure, heart rate…), and scores at different tests related to functional status (Barthel or Rankin), cognitive function (Global Deterioration Scale [GBS], Mini-Mental State Examination [MMSE]), or AF / stroke risk (CHADsVASc, HAS-BLED). Any changes in the electronic prescription made by the professional according to the patient's assessment will also be recorded. Data recording: Most of the study data will be recorded from evaluations/tests performed on patients (from anamnesis -including scales-, physical examination, and laboratory tests) or reports provided by specialists (available at computerized clinical history [e-SAP]), in the case of echocardiography (cardiologist) or MRI (radiologist) searching especially atrial dysfunction and signs of silent strokes. Data registered in the electronic primary care health records (e-CAP) of participants will also be collected. Therapeutic (pharmacological) changes will be registered from the SIRE (Catalan acronym for Integrated Electronic Prescription System). Finally, cardiac monitoring data will be collected through the electronic devices' registers. An ad hoc data collection questionnaire will be created to register and store all study variables. The electronic questionnaire will be available at a specific application (where data will remain stored for five years) accessible from the corporate (ICS) Intranet; only study researchers, through personal passwords, may record and access data. Definition of the outcome variable: Time until the diagnosis of atrial fibrillation (confirmed by electrocardiogram), stroke (new diagnosis in e-CAP or confirmed by neuroimaging) , and cognitive impairment/dementia [diagnosed through Score in Global Deterioration Scale (GDS)]. Sample calculation: To detect a difference of 0.1 units in the prevalence of atrial fibrillation observed, compared to the reference (0.07) accepting an alpha risk of 0.05 and a beta risk of 0.05 a sample of 148 individuals will be required. Estimated loss rate at 15 per cent. ;

Study Design

Related Conditions & MeSH terms

NCT number NCT05772806
Study type Observational
Source Fundacio d'Investigacio en Atencio Primaria Jordi Gol i Gurina
Contact Josep Lluís Clua Espuny, MD PhD
Phone 0034648743908
Status Recruiting
Start date January 15, 2023
Completion date December 2024

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