Abstract:Objective To explore change of the red blood cell/hemoglobin after Z-palatopharyngoplasty (ZPPP) plus genioglossus advancement and hyoid suspension (GAHM) in patients with severe obstructive sleep apnea hypopnea syndrome (OSAHS). Methods 26 patients with severe OSAHS (AHI>40) with obstruction in both oropharynx and hypopharynx received ZPPP plus GAHM. All the cases were followed up at least 6 months postoperatively. The Wilcoxon Signed Rank test was used for comparing the changes of the parameters. Results Six months after operation, apnea hyponea undex, percentage of CT90 and saturation of blood oxygen were (65.58±17.56) times/min, (30.99±28.13)% and (73.85±28.13)% respectively, while the preoperative data were (30.08±23.05) times/min, (15.52±25.55)%, and (82.77±7.33)%. The differences in the changes of abovementioned parameters well all statistically significant (P<0.01). Red blood cell count, hemoglobin and percentage of hematocrit were (4.77±0.53)×1012/L, (147.17±11.90) g/L, and (42.67±4.16)% respectively, while the preoperative data were (4.85±0.56)×1012/L, (148.54±10.51) g/L, and (42.62±3.01)%. The differences in the changes of abovementioned parameters were all statistically insignificant (P>0.05). Conclusion The sleep apnea ventilation index were improved obvionsly, while red blood cell count, hemoglobin and hematocrit were reduced with no significance after ZPPP plus GAHM in the patients with severe OSAHS.