Objective To evaluate the hearing function of pilots under physical examination for modification to equipment of high performance aircraft,using pure tone audiometry(PTA) and distortion product otoacoustic emission(DPOAE).Methods Analyzed were all the results of PTA and DPOAE of 75 pilots (150 ears) which accepted physical examination for modification to equipment of high performance aircraft in our department from March 2008 to February 2009.75 cases were divided into two groups according to their flight time.The difference between these two groups was studied.Results According to the Equipments of Physical Constitution for Flying Persons of Air force,PLA,all 75 pilots passed the ENT assessments as being qualified for flying.Of all 150 ears,abnormal DPOAEs were obviously higher than that of abnormal PTA tests.128 ears had normal PTA results.92 ears had normal DPOAE results.36 ears (27.6&) showed abnormal DPOAEs at one or more frequencies,especially at 1,3 and 4 kHz.22 ears had abnormal PTA results.20 ears had noticeable V or U shaped thresholds at 3 kHz and/or 4 kHz.The DPOAE amplitudes showed similar curves.The other two ears showed depressions at all frequencies,in both PTA and DPOAE tests.No statistically significant difference was found between the two groups in DPOAE.But statistical difference was found in DPOAE at 4 kHz compared with other frequencies.No statistically significant differences were found between the two groups in DPOAE amplitudes at 1,2,3 and 4 kHz.but at 6 and 8 kHz.Conclusion The application of DPOAE test helped find pilots who were on the early stage of noise-induced hearing loss.These pilots were the most important objects for us to follow up.

OBJECTIVE: To find out the clinical characteristics of Meniere's disease in flight aircrew and discuss relevant principles of clinical aviation medicine, in order to summarize experience in medical evaluation of aircrew. METHOD: Collect the data of 35 cases that were diagnosed with Meniere's disease from 1966 to 2011 in our hospital and analyze the clinical characteristics, diagnosis and flight conclusion of them. RESULT: Among the 35 cases, 34 patients complained of vertigo. 27 patients complained of tinnitus and 21 patients complained of hearing loss. (1) 18 cases manifested typical symptoms of Meniere's disease (paroxysmal vertigo, fluctuating neurosensory hearing loss, tinnitus and ear fullness); (2) 7 patients showed the symptoms of vertigo and tinnitus, not complaining of significant hearing loss (after inspection. 4 of them proved the low-frequency hearing loss); (3) 7 patients only manifested as vertigo; (4) 2 patients manifested as tinnitus and hearing loss. 1 patients manifested only hearing loss. On the basis of the diagnostic criteria of Meniere's disease formulated hy Committee on Hearing and Equilibrium of the American Academy of Otolaryngology-Head and Neck Surgery. 22 patients were diagnosed with definite Meniere's disease, 2 patients were diagnosed with probable Meniere's disease, 11 patients were diagnosed with possible Meniere's disease. For patients with definite Meniere's disease and probable Meniere's disease, the phases of the disease were: 11 cases of phase I, 7 case of phase II and 6 case of phase III. The flight conclusion of all the 35 patients was permanent grounding. The time from the attack of the disease to receiving the conclusion of permanent grounding fluctuated from three months to 11 years. CONCLUSION The diagnosis of Meniere's disease of flight aircrew must he cautious. For patients with atypical symptoms of Meniere's disease, the diagnosis should be made in the case of completely ruling out other possible diseases. Once be diagnosed, a patient should normally be flight unqualified. The flying waiver would he recommended only under exceptional circumstances. The criterion of waiver condition need to be further explored in the future.
Adult ; Aerospace Medicine ; methods ; Humans ; Male ; Meniere Disease ; diagnosis ; Middle Aged

Purpose/Significance To construct a named entity corpus of traditional Chinese medicine(TCM)ancient records,and to improve the recognition accuracy and applicability of the general domain named entity recognition(NER)model in the field of TCM ancient records.Method/Process Annotation standards for entities in TCM ancient records are formulated,and 2 384 Xin'an medical records are annotated.A RoBERTa-BiLSTM-CRF model is developed,and word vectors with semantic features are generated using the RoBERTa pre-trained language model.The BiLSTM-CRF model is used to learn the global semantic features of sequences and decode and output the optimal label sequence.Dictionary and rule features are incorporated to enhance the model's capability to recognize entity boundaries and categories.Result/Conclusion The model shows a good recognition effect on the named entity corpus of Xin'an medical cases.Integration of domain terminology dictionaries and rule-based features improves the overall Fl score to 72.8％.

Patients with severe trauma require an extremely timely treatment and transfusion plays an irreplaceable role in the emergency treatment of such patients. An increasing number of evidence-based medicinal evidences and clinical practices suggest that patients with severe traumatic bleeding benefit from early transfusion of low-titer group O whole blood or hemostatic resuscitation with red blood cells, plasma and platelet of a balanced ratio. However, the current domestic mode of blood supply cannot fully meet the requirements of timely and effective blood transfusion for emergency treatment of patients with severe trauma in clinical practice. In order to solve the key problems in blood supply and blood transfusion strategies for emergency treatment of severe trauma, Branch of Clinical Transfusion Medicine of Chinese Medical Association, Group for Trauma Emergency Care and Multiple Injuries of Trauma Branch of Chinese Medical Association, Young Scholar Group of Disaster Medicine Branch of Chinese Medical Association organized domestic experts of blood transfusion medicine and trauma treatment to jointly formulate Chinese expert consensus on blood support mode and blood transfusion strategies for emergency treatment of severe trauma patients ( version 2024). Based on the evidence-based medical evidence and Delphi method of expert consultation and voting, 10 recommendations were put forward from two aspects of blood support mode and transfusion strategies, aiming to provide a reference for transfusion resuscitation in the emergency treatment of severe trauma and further improve the success rate of treatment of patients with severe trauma.