When success is defined as reducing apnoea below 50% and under 20 events per hour, CSSC has achieved this in over 70% of the patients. "This often-quoted Sher's criteria, based only on numeric values of the PSG test, should be abandoned as they are both insufficient and out of date" (international experts' consensus statement 2024).

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Over 90 % of those who were operated on have had over fifty per cent reduction in their sleepiness and daytime symptoms without the need for any other intervention.

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If surgical benefit is combined with side sleeping or a mandibular advancement splint, CSSC has achieved successful outcomes in over 90% of the cases.

 

Less than10% needed a CPAP machine after sleep surgery.

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