June 18th - 10th 2023

June 18th - 10th 2023

1st ESSA-Meeting

June 18th – 10th 2023 at the University of Antwerp, Belgium

Corona and our ESSA Events

ESSA is designed and dedicated to be conducted as a presence/in person event. In case of tightened COVID-19-restrictions in Belgium there will be no switch to a digital/virtual meeting. The event will be cancelled.

We’ll provide a high quality hygiene concept in the entire event environment for your maximal individual viral protection. Information regarding our ESSA hygiene concept will follow separately. For participants not being vaccinated timely or up to this date or not being short-term COVID-tested (1 day before event) we’ll offer a free of charge ROCHE „SARS-CoV-2 Rapid Antigen Test“ next to the registration area before the registration process. Please consider this when traveling to Antwerp.

We’ll send the invoice for the participation fee 10 days prior to the ESSA event, when we can better estimate the COVID-19 situation. We ask you kindly to pay the invoice short-time before the event date. In the unexpected case that the ESSA event has to be cancelled at the latest moment your participation fee will be refunded completely.


Prof. Dr. Olivier M. Vanderveken, MD, PhD

Prof. Dr. Olivier M. Vanderveken, MD, PhD, is a full-time ENT,Head and Neck Surgeon at the Antwerp University Hospital where he is appointed as the Chair of the Department. He holds a position as Professor at the Faculty of Medicine of the University of Antwerp. 

His main research projects are in the area of sleep-disordered breathing. His research is focusing in particular on pathophysiological assessment of upper airway collapse including phenotyping, drug-induced sleep endoscopy, treatment of obstructive sleep apnea and upper airway surgery including hypoglossal nerve stimulation and transoral robotic surgery. In the past, he has been awarded several national and international scientific awards. 

Olivier Vanderveken holds a Senior Clinical Investigator Fellowship at the
Research Foundation Flanders (FWO).

Prof. Dr. Clemens Heiser, MD, PhD

Clemens Heiser is an ENT, Head and Neck surgeon at the Klinikum rechts der Isar, Technical University of Munich, where he is also leading the sleep laboratory.

He was one of the early adaptors of hypoglossal nerve stimulation in the clinical routine. Further research projects are in the area of sleep-disordered breathing – especially the development of diagnostic and
therapeutic tools. Clemens Heiser has been awarded in the past for several national and international scientific awards.

He is one the key opinion leaders in the field of neurostimulation in the upper airway. Further interests are the pathophysiology of obstructive sleep apnea.

Prof. Dr. Nico de Vries, MD, PhD

Nico de Vries is ENT specialist at OLVG West Hospital Amsterdam, the Netherlands. His special interest is diagnosis and treatment of obstructive sleep apnea in adults, in particular alternatives to CPAP. 

Research topics include Drug Induced Sleep Endoscopy, Implants, OSA surgery, Positional Therapy, Hypoglossal Nerve Stimulation, Combined Treatments, OSA and bariatric surgery, OSA and Anesthesia, OSA and
biomarkers. Since 2014 he is guest professor at the University of Antwerp, Belgium and since 2016, professor of Dental Sleep Medicine, dept oral kinesiology, ACTA, Amsterdam.

According to Research Gate, his H-index is 47. He has > 300 publications in international and national peer reviewed journals, > 70 book chapters and > 300 presentations.

Prof. Dr. Ulrich Sommer, MD

Prof. Dr. J. Ulrich Sommer, MD, is a full-time ENT, Head and Neck Surgeon at the Technical University Munich and the ENT-Center Mangfall-Inn. Furthermore, he holds a position as Professor at the University of Heidelberg, Faculty of Medicine in Mannheim.

Prof. Dr. Sommer graduated from University of Heidelberg in 2008. He received his doctoral degree in 2010 and was appointed tosenior lecturer in 2013. He gained his professorship in 2016 and lead the ENT-Department of the University Hospital Wuppertal beginning in 2018. Since 2020 he is working at the Technical University in Munich to continue his research and is furthermore working at the ENT-Center Mangfall-Inn. His research focus lies on sleep medicine in general and in hypoglossal nerve stimulation and soft palate surgery in particular. His activities lead to over 150 publications in peer reviewed journals, guidelines and books.