Salivary gland damnification is one of the most common complication in head and neck cancer radiotherapy.Because of their unique anatomical positions,salivary glands usually receive high irradiation dose.Studies on radiation damage and dysfunction of salivary glands include injury mechanisms,relationship between dosimetrics and volumn changes and secretion,as well as prevention and treatment of damage.

Objective To compare and analyze the clinical effect and adverse reaction of oral azithromycin,oral and intravenous erythromycin on the treatment of mycoplasma infection in respiratory tract.Methods In our hospital in January 2015～March 2016 year,clinical datas of 110 cases with mycoplasma infection in respiratory tract in children were analyzed retrospectively.The total cases were randomly divided into the oral azithromycin treatment group(38 cases),oral erythromycin treatment group(36 cases)and erythromycin intravenous group(36 cases).The therapeutic effects and the adverse reactions were evaluated in the three groups.ResultsThe effective rate in the oral azithromycin group was significantly higher than that of the two other groups.The time of fever fading,rales and cough disappearance and the hospitalized day in the the oral azithromycin group were significantly shorter than that in the other two groups.Serum IL-8,TNF-alpha and hs-CRP level and the adverse reaction rate in the the oral azithromycin was significantly lower than that in the other two groups.The differences of all above the indexes were statistically significant(all P<0.05),the above index in the oral erythromycin group and erythromycin intravenous group was no statistical significance.Conclusion Compared with different medication route of erythromycin,it can get better results which oral azithromycin was used on the treatment of children with respiratory tract mycoplasma infection,the adverse reactions rate is lower,is a safe and effective treatment.

OBJECTIVE: The purpose of the study was to investigate the balance function of the patients with benign paroxysmal positional vertigo (BPPV) during standing. METHOD: In this study 41 patients with posterior semicircular canal BPPV (PC BPPV) and 11 patients with horizontal semicircular canal BPPV (HC BPPV) were recruited. Dynamic balance during standing was measured in Sensory Organization Test (SOT). Static balance during standing was measured in modified Clinical Test of Sensory Interaction and Balance (mCTSIB). Data of BPPV patients were compared to that from 44 normal controls. RESULT: Scores of the patients with PC BPPV were lower than that of the normal controls in the last three test conditions of SOT. Patients with PC BPPV demonstrated greater sway velocity in stance on foam with eyes open and eyes closed in mCTSIB. No postural deficit was observed in neither SOT nor mCTSIB when the patients with HC BPPV were compared to the normal controls. CONCLUSION Disorders of the horizontal semicircular canal do not influence postural control. Both dynamic and static posturography can detect the postural imbalance caused by posterior semicircular canal dysfunction.
Benign Paroxysmal Positional Vertigo ; physiopathology ; Case-Control Studies ; Humans ; Postural Balance ; Semicircular Canals ; physiopathology

Diagnosis, Differential ; Humans ; Meniere Disease ; diagnosis ; therapy ; Vertigo ; diagnosis ; therapy

Objective To analyze the clinical characteristics and follow-up data of catheter ablation of recurrent atrial tachycardias (ATs) after Mini-Maze surgery,and to explore prognostic factors for recurrence.Methods 59 patients in Guangdong General Hospital with ATs post Mini-Maze and concomitant open-heart surgery from April.2010 to June.2015 were included.According to high density precise mapping,activation mapping,voltage mapping and entrainment mapping,they underwent electrophysiological study and ablation which was guided by three-dimensional mapping system.All patients were followed up regularly.We explored the prognostic factors for recurrence by the Cox regression analysis.Results There were 88 types of ATs being mappedwith mean (1.49 ± 0.75) types of ATs identified per case.Most ATs were macro-reentry ATs(67/88,76.1％)and focal ATs (20/88,22.7％),respectively.56 patients (94.9％) achieved immediate ablation success.In a mean follow-up of (30.8 ± 17.7) months,recurrences were observed in 12 patients after the first time catheter ablation.Recurrent time was 3.5 (1.3,12.0) months and the overall ablation success rate was 74.6％ (44/59).6 patients received second ablation and the achievement of freedom from arrhythmias reached 79.7％ (47/59).Multivariate analysis showed that the LA diameter was the independent predictor for recurrence (HR 1.108,95％ CI 1.002 to 1.226,P =0.045).Conclusion Catheter ablation of ATs post Mini-Maze with concomitant surgery is save and feasible.LA diameter is the independent predictor for recurrence.

OBJECTIVE: The purpose of this article is to improve the understanding of complications of pleomorphic adenocarcinoma, and the possibility of complicated with dermatomyositis. In order to explore whether there is a certain relationship between the two diseases. METHOD: Reported one patient in our hospital with the diagnosis of pleomorphic adenocarcinoma complicated dermatomyositis, and clarified the diagnosis and treatment of these two diseases during hospitalization. Reviewed the latest clinical literature relevant to pleomorphic adenocarcinoma and dermatomyositis. RESULT: The patients underwent superficial parotidectomy treatment. The postoperation pathologic and immunohistochemical examination confirmed the diagnosis of pleomorphic adenocarcinoma. Dermatomyositis improved better after the operation. CONCLUSION Pleomorphic adenocarcinoma has the possibility of complicated with dermatomyositis which may misdiagnosis in clinical practice. Summarize the latest diagnosis progress of pleomorphic adenocarcinoma and the surgical treatment of the tumor. Also discuss the standards of clinical diagnosis and treatment of dermatomyositis. Analysis there may be a relationship between the two diseases on autoimmune mechanism.
Adenoma, Pleomorphic ; complications ; surgery ; Aged ; Dermatomyositis ; complications ; Humans ; Male

Objective:To explore the feasibility of the diameter of pupils during recovery period for predicting early postopera‐tive hypoxemia of patients undergoing gynecological laparoscopy with general anesthesia .Methods:A total of 70 adult female patients classified as I‐II according to American Society of Anesthesiologists(ASA)Criteria ,who underwent gynecological lapa‐roscopy during Oct 2013 and Dec 2013 ,were chosen .The operations were performed with total intravenous anesthesia .The di‐ameter of pupils upon arriving at postanesthesia care unit(PACU) .Patients were divided into two groups ,the group A (diame‐ter of pupil was <2 mm) and the group B (diameter of pupil was ≥2 mm) .The pulse oxygenation saturation(SpO2 ) immedi‐ately after inserting nasal catheter and 2 ,4 ,6 ,8 ,10 ,20 ,30 min after administering 3 L/min oxygen inhalation through nasal catheter ,were compared .Results:The value of SpO2 in group A was significantly lower than that in group B at 2 min and 4 min after arriving at PACU ,however ,the difference between two groups was not statistically significant at 6 min after arriving at PACU .The smaller the diameter of pupil on arriving at PACU was ,the lower the value of SpO2 at 2 min after arriving was , and there was a linear correlation between the two factors(r2 =0 .4268) .The area under receiver operator characteristic of the diameter of pupil for predicting the lowest value of SpO2 at 10 min after arriving at PACU was 0 .99 .It showed a very high ac‐curacy of the diameter of pupil for predicting postoperative hypoxemia .The threshold of the diameter of pupil for evaluation was 2 .25 mm .Its sensibility for predicting postoperative hypoxemia was 91 .4% ,and its specificity was 100% .Conclusions:The diameter of pupils during recovery period was correlated with the occurrence of early hypoxemia after general anesthesia . By checking the diameter of pupils upon arriving at PACU ,the monitoring on patients with sign of respiratory depression could be strengthened .

In recent years,the"One Hospital with Multiple Campuses"model has emerged in major public hospitals across China,providing intrinsic impetus and vitality for the expansion and balanced distribution of high-quality medical re-sources.This paper analyzed the current situation and challenges of the multiple campuses development in public hospitals within China,adopting a problem-oriented approach to explore optimized path to a unified management system.The aim was to establish a collaborative management model across campuses based predicated on the homogenization of systems,management,supervi-sion,professionals,and performance.Taking the Third Affiliated Hospital of Sun Yat-sen University as a case in this study,the paper reviewed and summarized management strategies and practical experience from the aspects of management model,resource allocation,information-orientation,homogenized management,and cultural development.Additionally,the article suggested to u-tilize 5G technology to empower homogenization across campuses.In this way,the hospital's overall operational efficiency can be improved,optimize resource allocation optimized,homogenized medical services ensured,and core competitiveness enhanced.These efforts will provide a reference for the high-quality development of multi-campus public hospitals.