Cardiovascular response to Gasserian ganglion ablation on trigeminal neuralgia under local anesthesia: a retrospective single-blind case–control study

Table 4 Visual analog scale for pain assessment during the treatment for trigeminal neuralgia

	Study group	Placebo group	p^a
Preoperative	5.8 ± 0.1	5.6 ± 0.1	0.286
The end of puncture VAS	2.5 ± 0.1 ^ab	4.0 ± 0.1	< 0.001
Radiofrequency treatment at 60℃VAS	2.8 ± 0.1 ^ab	5.0 ± 0.1	< 0.001
Radiofrequency treatment at 65℃VAS	2.9 ± 0.2 ^ab	5.8 ± 0.1	< 0.001
Radiofrequency treatment at 70℃VAS	3.3 ± 0.2 ^ab	6.2 ± 0.1	< 0.001
Radiofrequency treatment at 75℃VAS	2.8 ± 0.1 ^ab	6.0 ± 0.2	< 0.001
Postoperative VAS	1.2 ± 0.1 ^ab	2.4 ± 0.1	< 0.001

^aPaired t-test; there was a statistical difference between the groups
^bStudent's -test; there was a statistical difference between the baseline and post-surgery for the study group

ISSN: 1471-2253