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Atrial Fibrosis in Obstructive Sleep Apnea Patients: A Pilot Study

Atrial Fibrosis in Obstructive Sleep Apnea Patients: A Pilot Study

Recruiting
18-75 years
All
Phase N/A
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Overview

The investigators hypothesize that Obstructive Sleep Apnea (OSA) is an independent risk factor for atrial fibrosis development. The investigators aim to prove the presence of atrial fibrosis on Delayed Enhancement Magnetic Resonance Imaging (DE-MRI) in OSA patients without atrial fibrillation (AF).

Description

This is a cross sectional pilot study. Sixty mild to severe OSA patients and five age- and Body Mass Index (BMI)-matched controls will undergo a DE-MRI. Demographics, medical history and polysomnography results will be collected. Patients diagnosed with obstructive sleep apnea have undergone a polysomnography before the study and were diagnosed based on this test. The investigators will not be performing a polysomnography for any of the patients, just collecting the previous results from their medical charts to confirm they have a true OSA diagnosis for their inclusion in the study.

Eligibility

Inclusion Criteria: Group A: 10 patients 18-75-year-old With mild OSA (5\30), confirmed by polysomnography. No previous AF diagnosis on the medical chart Group D (mild OSA+ AF): 10 patients 18-75-year-old With mild OSA (5\30), confirmed by polysomnography. Previous AF diagnosis \*In this group, patients with AF and OSA who already have done MRI might be included. Group F (Control): 10 Patients 18-75-year-old No previous OSA and/or AF Diagnosis on the medical chart Exclusion Criteria: * History of chronic heart failure (LVEF \< 50%), AF, myocardial infarction, valvular disease. * Prior cardiac or chest surgery. * Other advanced pulmonary disease (severe Chronic Obstructive Pulmonary Disease (COPD) or asthma, pulmonary hypertension) or central sleep apnea. * Contraindications to DE-MRI (e.g. allergy to gadolinium, pacemakers, defibrillators (ICD's), other devices/implants contraindicated for MRI, glomerular filtration rate \<30 ml/min, etc.). * Pregnancy. * Inability to give informed consent.

Study details
    Atrial Fibrillation
    Obstructive Sleep Apnea

NCT04814420

Tulane University

13 May 2026

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