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Updated: Nov 30, 2025

In Vivo Evaluation of the Mechanical and Viscoelastic Properties of the Rat Tongue
Published on: July 6, 2017
No changes in nocturnal respiration with hypoglossal neurostimulation therapy for obstructive sleep apnoea
Adel Bachour1, Leif Bäck2, Petra Pietarinen2
1Sleep Unit, Heart and Lung Center, Helsinki University Hospital, University of Helsinki, Helsinki, Finland.
Study Objectives:
We initiated Hypoglossal Neurostimulation therapy (HGNS) at the Helsinki University Hospital in late 2014. Here, we report our experience.
Methods:
We included all 15 HGNS patients. All patients had previously failed both CPAP and oral appliance therapy for sleep apnoea. Overnight polysomnography parameters were analysed before and at 1.5 years with HGNS.
Results:
Mean ± SD patient age was 53 ± 6 years; 2 women and 13 men were included. Mean ± SD efficient CPAP level was 11.4 ± 3.4 cm H2 O. Implantation technically succeeded in all patients. There were no significant changes of AHI and ODI4 after HGNS [median (quartile) 29.2/h (19.8-38.7) versus 30.1/h (15.6-52.6) and 15.0/h (5.9-20) versus 12.5/h (6.9-30.2) respectively].
Conclusion:
We did not observe significant changes in AHI and ODI4 indices with HGNS therapy. Larger multicentre randomised controlled trials are necessary before wider international use of HGNS.
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