Abstract:OBJECTIVE: To analyze the clinical significance of changes in blood routine indexes in children with sleep-disordered breathing (SDB) with adenoid and/or tonsil hypertrophy (ATH), and to provide some scientific basis for the assessment of the condition and prognosis of SDB in children. METHODS: Sixty children diagnosed with SDB (with ATH) who were hospitalized in the Department of Otorhinolaryngology of the First Affiliated Hospital of Dali University from October 2023 to August 2024 were selected as a case group, and 60 healthy children who had a physical examination in the hospital during the same period were selected as the control group. The changes in blood routine indexes of SDB children and healthy children, and SDB children before and after surgery were compared, respectively. RESULTS: The differences in WBC, N%, L%, MO%, EO%, BA%, N#, L#, MO#, EO#, BA#, RBC, HGB, HCT, MCV, MCH, MCHC, RDW-CV, RDW-SD, PLT, and PCT between the children of the case group and the control group were not statistically significant (P>0.05); the differences in MPV, PDW, P- LCR were higher than those in the control group, and the differences were statistically significant (P < 0.05). MPV, PDW, and P-LCR were positively correlated with age in the case group (r=0.322, P<0.05; r=0.376, P<0.05; r=0.349, P<0.05). The differences in WBC, N%, L%, MO%, EO%, BA%, N#, L#, MO#, EO#, BA#, HCT, RDW-CV, PLT, PCT, PDW, and P-LCR between preoperative and postoperative periods in the children of the case group were not statistically significant (P > 0.05); the differences in postoperative periods were lower than preoperative periods in RBC, HGB, MCH, MCHC, and MPV, and the differences were statistically significant (P < 0.05); MCV, RDW-SD were elevated compared with the preoperative period, and the difference was statistically significant (P < 0.05). CONCLUSION: Blood routine could be a simple and reliable laboratory parameter to assist in assessing the severity of SDB and evaluating the therapeutic effect.