Application significance of blind tracheal intubation instrument in the nasotracheal intubation anesthesia for oral maxillofacial fractures

Objective To investigate the application significance of blind tracheal intubation instrument(BTII)in the nasotracheal intubation anesthesia for oral maxillofacial fractures.Methods 90 cases of patients treated with open reduction and internal fixation for maxillofacial fractures after general anaesthesia and American Society of Anethesiology(ASA)Ⅰ-Ⅱ were selected and divided into 3groups.All of the patients were treated with awake nasal intubation operated by professional persons.Group Ⅰ received traditional blind transnasal tracheal intubation,according to the air sound of breath.Group Ⅱ received endotracheal intubation under fiberoptic bronchoscope through nose.GroupⅢreceived endotracheal intubation under BTII.HRs,SBPs and DBPs before intubation(T0),at the intubation(T1)and 5min after intubation(T2)were recorded,and the one-time successful rates of intubation,the failure rates,the spent-time of successful intubation and the complications of 3groups were also recorded.Results(1)The HR,SBP and DBP of 3groups at T1 were significantly higher than those at T0 and T2(P0.05).There was no significant difference of SpO2 at each time point among 3groups(P0.05).(2)The one-time successful rates of intubation of group Ⅰ,Ⅱ and Ⅲ were 50.0%,96.7% and 93.3% respectively,which of group Ⅰ was significantly different from group Ⅱ and Ⅲ(P0.05),and there was no significant difference between group Ⅱ and Ⅲ(P0.05).(3)The failure rates of groupⅠ,ⅡandⅢ were 26.7%,0.0%and 3.3%respectively,which of groupⅠ was significantly different from groupⅡandⅢ(P0.05),and there was no significant difference between groupⅡandⅢ(P0.05).(4)The spent-time of successful intubation of group Ⅰ,Ⅱ and Ⅲ were(94.1±14.0),(64.6±7.8)and(65.3±9.1)s respectively,which of group Ⅰ was significantly different from group Ⅱ and Ⅲ(P0.05),and there was no significant difference between group Ⅱ and Ⅲ(P0.05).(5)The complications occurred in 3groups after intubation.There were 12,2and 4cases with nasopharyngeal hemorrhage and 8,1and 3cases with sore throat respectively in group Ⅰ,Ⅱ and Ⅲ.Conclusion It is safety,simple and reliable to use BTII in the nasotracheal intubation anesthesia for oral maxillofacial fractures,which is worthy to be promoted and applied in clinical.