Table 3.

Effect of radiofrequency ablation of the inferior turbinates on therapeutic CPAP pressures measured in centimetres of water pressure (cwp) and CPAP compliance

Patient number	Pre-nasal surgery BMI	Post-nasal surgery BMI	Pre-nasal surgery CPAP pressure	Post-nasal surgery CPAP pressure	Duration between surgery and follow-up data (months)	Effect of nasal surgery on pressures (centimetres of water pressure) or use
1	32.92	32.78	N/A	N/A	2	Improved CPAP compliance
2	–	–	N/A	N/A	2	Improved CPAP compliance
3	31.25	31.14	13	11.1	19–22	Pressure decreased by 1.9 cwp
4	33.66	35.96	13.8	14.1	8–11	Pressure increased by 0.3 cwp
5	20.38	21.12	13.8	12.4	6–7	Pressure decreased by 1.4 cwp
6	24.41	24.42	10.5	6.5	19–20	Pressure decreased by 4 cwp
7	26.93	27.03	6.7	6	2	Pressure decreased by 0.6 cwp
8	27.18	25.86	10.6	10.3	19	Pressure decreased by 0.3 cwp
Total						*Mean difference 1.33 ± 1.52 cwp

95th percentile therapeutic CPAP pressures are reported, which decreased for patients #3–8, except patient #4 whose BMI increased by 2.3 kg/m² during the follow-up period

* Standard error of the mean is 0.62, confidence interval is −0.26 to 2.93, p value is 0.085