[Association between airborne particulate matter（PM 2.5） concentration and the incidence of allergic rhinitis in Shanghai].

To explore the impact of PM 2.5 concentration in Shanghai on the incidence of allergic rhinitis（AR） in the population, and provide strategies for early warning and prevention of AR. Collect daily average concentrations of atmospheric pollutants monitored in Shanghai from January 1, 2017 to December 31, 2019, and clinical data of AR patients from five hospitals in Shanghai during the same period.

Coblation tonsillectomy under surgical microscopy: A retrospective study.

Objective: A retrospective study to compare surgical parameters and postoperative pain in patients undergoing coblation tonsillectomy with or without microscopic guidance.

Methods: Data regarding duration of surgery and hospital stay, intraoperative blood loss, incidence of haemorrhage and postoperative pain scores were retrieved from the medical records of adult patients undergoing coblation tonsillectomy under direct vision or with microscopic guidance.

Results: The incidence of secondary haemorrhage (>24 h postoperatively) was significantly lower and the duration of hospital stay was significantly shorter in the microscope group (n = 92) than the direct vision group (n = 76).

[The changes in vestibular function in patients with diabetes mellitus and its clinical significance].

Objective: To study the changes of vestibular function in patients with diabetes mellitus and its clinical significance.

Method: Electronystagmography (ENG) was used to examine 76 patients with diabetes mellitus and 60 healthy adults subjects. After clinical detection of vestibular function including spontaneous nystagmus, positional test, head shaking nystagmus, neck torsion test, caloric test, and sensory organization tests which consist of gaze, saccade and smooth pursuit test, the results of these two groups were recorded for qualitative and quantitative statistical analysis.

[Application of auditory brainstem response and distortion product otoacoustic emission in the clinical detection of hearing loss in patients with diabetes mellitus].

Objective: To study the characteristic of hearing loss and the changes of the auditory brainstem response and distortion product otoacoustic emission in diabetics.

Method: General information of 136 diabetics were investigated whether had the complication of capillary vessel and hearing loss with self-made questionnaire at random. 136 cases (272 ears) were tested with ABR and DPOAE.

[The clinical characteristic of electroglottography curves of pathological voice in adult].

Objective: To discuss the clinical characteristic of Electroglottography (EGG) curves of pathological voice in adult.

Method: Four hundred and fifty-three adults with pathological voices were examined by EGG and the abnormal EGG curves were analyzed.

Result: (1) the EGG cycle was composed of contact phase (CP) and open phase (OP), the ratio of CP/OP was between 0.