Atrial Fibrosis in Obstructive Sleep Apnea Patients: A Pilot Study

Summary

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).

Eligibility

Inclusion Criteria:

Group A: 10 patients 18-75-year-old With mild OSA (5\<AHI\<15), confirmed by polysomnography. No previous AF diagnosis on the medical chart

Group B: 10 patients 18-75-year-old With moderate OSA (15\<AHI\<30), confirmed by polysomnography. No previous AF diagnosis on the medical chart

Group C: 10 patients 18-75-year-old With severe OSA (AHI\>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\<AHI\<15), confirmed by polysomnography. Previous AF diagnosis

* In this group, patients with AF and OSA who already have done MRI might be included.

Group E (severe OSA +AF): 10 patients 18-75-year-old With severe OSA (AHI\>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.

Conditions3

Locations2 sites

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