Margaux Blanchard

ORCID: 0000-0001-8382-4037
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About
Contact & Profiles
Research Areas
  • Obstructive Sleep Apnea Research
  • Neuroscience of respiration and sleep
  • Cardiovascular and Diving-Related Complications
  • Cardiovascular Syncope and Autonomic Disorders
  • Non-Invasive Vital Sign Monitoring
  • Heart Rate Variability and Autonomic Control
  • Chronic Obstructive Pulmonary Disease (COPD) Research
  • Cardiovascular Health and Disease Prevention
  • Sleep and Wakefulness Research
  • Blood Pressure and Hypertension Studies
  • Venous Thromboembolism Diagnosis and Management
  • Restless Legs Syndrome Research
  • Sleep and related disorders
  • Respiratory Support and Mechanisms
  • Sleep and Work-Related Fatigue
  • High Altitude and Hypoxia
  • Inflammatory Myopathies and Dermatomyositis
  • Nutritional Studies and Diet
  • Cardiovascular Health and Risk Factors
  • Chronic Myeloid Leukemia Treatments
  • EEG and Brain-Computer Interfaces
  • Cardiac Arrest and Resuscitation
  • Voice and Speech Disorders
  • Cardiovascular Disease and Adiposity
  • Cardiovascular and exercise physiology

Cidelec (France)
2023-2025

Institut de recherche en horticulture et semences
2025

École Supérieure d'Électronique de l'Ouest
2020-2023

Le Mans Université
2020-2023

Laboratoire d'Acoustique de l'Université du Mans
2020-2023

Centre National de la Recherche Scientifique
2020-2023

Université d'Angers
2021

Creusot-Loire Entreprises (France)
2009

Rationale: Randomized controlled trials showed no effect of positive airway pressure (PAP) therapy for obstructive sleep apnea (OSA) on cardiovascular (CV) risk. However, patient selection and low PAP adherence preclude the generalization their data to clinical samples. Objectives: To evaluate association between hours use, mortality, CV morbidity in real-life conditions. Methods: Data from Pays de la Loire Cohort were linked health administrative identify incident major adverse events...

10.1164/rccm.202202-0366oc article EN American Journal of Respiratory and Critical Care Medicine 2022-07-11

Rationale: Data from population-based cohorts suggest that symptom subtypes and obstructive sleep apnea (OSA)-specific hypoxic burden (HB) could help to better identify patients with OSA at high cardiovascular (CV) risk. Objectives: We aimed evaluate whether those new markers are associated the risk of major adverse CV events (MACE) in clinical setting. Methods: Pays de la Loire cohort were linked health administrative data occurrence MACE (a composite outcome including all-cause mortality,...

10.1164/rccm.202105-1274oc article EN American Journal of Respiratory and Critical Care Medicine 2021-10-15

Rationale: Nocturnal hypoxemia and sympathetic/parasympathetic imbalance might contribute to the occurrence or atrial fibrillation (AF) in patients with obstructive sleep apnea (OSA). During recordings, pulse rate variability (PRV) derived from oximetry provide an accurate estimation of heart variability, which reflects autonomic cardiovascular control. Objectives: We aimed evaluate whether indices oxygen desaturation PRV nocturnal were associated AF incidence investigated for OSA. Methods:...

10.1513/annalsats.202009-1202oc article EN Annals of the American Thoracic Society 2021-01-12

To assess, in a large cohort of patients with obstructive sleep apnea, the factors that are independently associated positional apnea (POSA) and exclusive POSA (e-POSA) determine their prevalence. The secondary objective was to evaluate outcome positive airway pressure (PAP) therapy for e-POSA.This retrospective study included 6,437 typical mild-to-severe OSA from Pays de la Loire cohort. Patients e-POSA were compared those non-POSA clinical polysomnographic characteristics. In subgroup (n =...

10.5664/jcsm.8752 article EN Journal of Clinical Sleep Medicine 2020-08-17

Abstract Background The impact of Positive Airway Pressure (PAP) therapy on the use oral antihypertensive drugs (OAHDs) in patients with obstructive sleep apnoea (OSA) remains unclear. This study aimed to evaluate association between PAP and delivery OAHDs. Methods Data from Pays de la Loire Sleep Cohort were linked French health insurance database quantify OAHD hypertension at initiation therapy. primary endpoint was change score, reflecting number classes delivered. groups defined as:...

10.1183/23120541.00081-2025 article EN cc-by-nc ERJ Open Research 2025-02-27

The pathophysiology of residual sleepiness in treated obstructive sleep apnoea (OSA) remains poorly understood. Animal models suggest that it may involve neuronal damage due to intermittent hypoxia and fragmentation. In a cohort 122 continuous positive airway pressure (CPAP) OSA patients referred for maintenance wakefulness test, we explored the determinants (objective) alertness those (subjective) assessed by Epworth Sleepiness Scale. We found logistic models, hypoxic burden was...

10.1136/thorax-2024-222462 article EN cc-by-nc Thorax 2025-01-19

Sleep apnoea specific heart rate response (ΔHR) has been identified as a promising biomarker for stratifying cardiovascular (CV) risk, and predicting positive airway pressure (PAP) benefit in obstructive sleep (OSA). However, the need prior manual scoring of respiratory events potentially limits accessibility reproducibility ΔHR. We aimed to evaluate association pulse oxygen desaturations automatically derived from oximetry (ΔHRoxi) with CV risk OSA. ΔHRoxi ΔHR were measured OSA patients...

10.1183/13993003.01883-2024 article EN cc-by-nc European Respiratory Journal 2025-02-20

Increasing evidence links obstructive sleep apnea (OSA) to cognitive decline. Autonomic dysfunction assessed by heart rate variability is a promising early biomarker of impairment in populations without major neurocognitive disorder (MND). We aimed determine whether nocturnal pulse (PRV) extracted from oximetry signal and OSA severity could predict MND onset among older patients.This study relied on data collected within the multicenter longitudinal Pays de la Loire Sleep Cohort, linked...

10.1111/jgs.17933 article EN Journal of the American Geriatrics Society 2022-06-20

Objective. Cardiovascular disease (CVD) is one of the leading causes death worldwide. There are many CVD risk estimators but very few take into account sleep features. Moreover, they rarely tested on patients investigated for obstructive apnea (OSA). However, numerous studies have demonstrated that OSA index or features associated with and mortality. The aim this study to propose a new simple mortality estimator use in routine testing.Approach. Data from large multicenter cohort CVD-free...

10.1088/1361-6579/ac2a8f article EN Physiological Measurement 2021-09-27

Previous studies have reported inconsistent findings regarding the association between obstructive sleep apnea (OSA) and incident venous thromboembolism (VTE). More specifically, OSA unprovoked VTE was barely evaluated. We aimed to evaluate whether hypopnea index (AHI) nocturnal hypoxemia markers were associated with incidence in patients investigated for OSA. Data from Pays de la Loire Sleep Cohort linked French health administrative data identify suspected no previous disease. Cox...

10.1055/a-2000-8288 article EN Thrombosis and Haemostasis 2022-12-19

Cardiovascular (CV) disorders and obstructive sleep apnea (OSA) are very prevalent diseases worldwide. Multiple studies have demonstrated that OSA is associated with increased CV risk. Clinicians need to assess the risk select proper treatment. A growing number of research employed machine learning predict by integrating clinical features. In this paper, a multiple input deep model was proposed directly use signals combined Data from 5,506 patients Pays de la Loire Sleep Cohort, without...

10.1109/access.2022.3231743 article EN IEEE Access 2022-01-01
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