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Browsing by Author "Arnardóttir, Erna Sif"

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Anomaly detection in sleep : detecting mouth breathing in children

Biedebach, Luka; Óskarsdóttir, María; Arnardóttir, Erna Sif; Sigurdardóttir, Sigridur Erla; Clausen, Michael Valur; Sigurðardóttir, Sigurveig Þ; Serwatko, Marta; Islind, Anna Sigríður (2024-05)

Identifying mouth breathing during sleep in a reliable, non-invasive way is challenging and currently not included in sleep studies. However, it has a high clinical relevance in pediatrics, as it can negatively impact the physical and mental health of ...
BreathFinder : A Method for Non-Invasive Isolation of Respiratory Cycles Utilizing the Thoracic Respiratory Inductance Plethysmography Signal

Holm, Benedikt; Borský, Michal; Arnardóttir, Erna Sif; Serwatko, Marta; Mallett, Jacky; Islind, Anna Sigríður; Óskarsdóttir, María (2024-08-21)

INTRODUCTION: The field of automatic respiratory analysis focuses mainly on breath detection on signals such as audio recordings, or nasal flow measurement, which suffer from issues with background noise and other disturbances. Here we introduce a novel ...
Deep learning-based algorithm accurately classifies sleep stages in preadolescent children with sleep-disordered breathing symptoms and age-matched controls

Somaskandhan, Pranavan; Leppänen, Timo; Terrill, Philip I; Sigurdardottir, Sigridur; Arnardóttir, Erna Sif; Ólafsdóttir, Kristín Anna; Serwatko, Marta; Sigurðardóttir, Sigurveig Þ; Clausen, Michael Valur; Töyräs, Juha; Korkalainen, Henri (2023-04-14)

INTRODUCTION: Visual sleep scoring has several shortcomings, including inter-scorer inconsistency, which may adversely affect diagnostic decision-making. Although automatic sleep staging in adults has been extensively studied, it is uncertain whether ...
Novel oxygen desaturation parameters are associated with cardiac troponin I : Data from the Akershus Sleep Apnea Project

Sigurdardottir, Fjola D.; Øverby, Caroline Tonje; Nikkonen, Sami; Karhu, Tuomas; Dammen, Toril; Nordhus, Inger Hilde; Thorshov, Thea; Einvik, Gunnar; Kainulainen, Samu; Leppänen, Timo; Arnardóttir, Erna Sif; Töyräs, Juha; Omland, Torbjørn; Hrubos-Strøm, Harald (2022-03-15)

Novel diagnostic markers for obstructive sleep apnea beyond the apnea–hypopnea index (AHI) have been introduced. There are no studies on their association with markers of subclinical myocardial injury. We assessed the association between novel desaturation ...
Validation of manually scored multichannel frontal electroencephalography against polysomnography in a paediatric cohort

Sigurdardottir, Sigridur; Pitkänen, Henna; Korkalainen, Henri; Kainulainen, Samu; Serwatko, Marta; Ólafsdóttir, Kristín Anna; Sigurðardóttir, Sigurveig Þ; Clausen, Michael Valur; Somaskandhan, Pranavan; Stražišar, Barbara G; Leppänen, Timo; Arnardóttir, Erna Sif (2025-02-13)

Polysomnography is the only internationally recognized method to diagnose paediatric obstructive sleep apnea, thus, simpler and more cost-effective diagnostic tools are urgently needed. This study aimed to validate the manual scoring of frontal ...
Verbal memory is linked to average oxygen saturation during sleep, not the apnea-hypopnea index nor novel hypoxic load variables

Thorisdottir, K.; Hrubos-Strøm, H.; Karhu, T.; Nikkonen, S.; Dammen, T.; Nordhus, I. H.; Leppänen, T.; Jónsdóttir, María Kristín; Arnardóttir, Erna Sif (2024-11)

Introduction: The apnea-hypopnea index (AHI) is the current diagnostic parameter for diagnosing and estimating the severity of obstructive sleep apnea (OSA). It is, however, poorly associated with the main clinical symptom of OSA, excessive daytime ...

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