Research recommendation(s) from an individual piece of guidance Guidance: Hypoglossal nerve stimulation for moderate to severe obstructive sleep apnoea Date issued: 22 November 2017 Research recommendations coming out of this guidance Further research including the use of observational data from registries should provide information on patient selection, safety outcomes, quality of life, long-termoutcomes and the position of the procedure in the treatment pathway. NICE may update the guidance on publication of further evidence.