Abstract:Objective To compare the clinical effect of low temperature plasma tonsillectomy and adenoidectomy with tonsillectomy by single pole high frequency electrotome and powered microdebrider adenoidectomy under nasal endoscopy.Methods Patients with hypertrophy of tonsil and adenoid were selected. The experimental group was 40 cases with low temperature plasma tonsillectomy and adenoidectomy under nasal endoscopy, and the control group was 40 cases with tonsillectomy by single pole high frequency electrotome and powered microdebrider adenoidectomy under nasal endoscopy.Results The operative time (36.80 ± 3.11) min, intraoperative blood loss (12.72 ± 3.05) mL, the pain scores were (2.05 ± 0.50), (2.62 ± 0.54), (2.50 ± 0.55) and (1.90 ± 0.44) in experimental group at 6, 24, 48 and 72 h after operation, were significantly lower than those in control group, the difference was statistically significant between the two groups (P < 0.01). Tonsil pseudomembrane shedding time in control group (9.30 ± 1.29) d was significantly less than that in experimental group (11.65 ± 1.28) d, the difference was statistically significant between the two groups (P < 0.01). 30 cases were cured, 9 cases were improved and 1 case was invalid in experimental group; 25 cases, improved 12 cases, ineffective 3 cases in control group, there was no statistical difference between the two groups (P > 0.05).Conclusion Low temperature plasma tonsillectomy and adenoidectomy under nasal endoscopy reduce the operation time and intraoperative bleeding and relieve postoperative pain in children. This technique is worth popularizing.