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April 2017, Volume 20, No.11 Abstracts

 Benign Paroxysmal Positional Vertigo:Diagnostic CriteriaMichael von Brevern1,Pierre Bertholon2,Thomas Brandt3,Terry Fife4,Takao Imai5,Daniele Nuti6David Newman-Toker7YAN Shuang-meiTranslator8,ZHANG HuanTranslator8,YANG XuProofreader8*,WU Zi-mingProofreader9*

1.Department of Neurology,Park-Klinik Weissensee,Berlin,Germany

2.Department of Otolaryngology-Head and Neck Surgery,Bellvue Hospital,Saint-Etienne,France

3.Institute of Clinical Neuroscience,Ludwig-Maximilian University,Munich,Germany

4.Barrow Neurological Institute,University of Arizona College of Medicine,Phoenix,AZ,USA

5.Department of Otolaryngology-Head and Neck Surgery,Osaka University Graduate School of Medicine,Japan

6.Department of Otolaryngology-Head and Neck Surgery,University of Siena,Italy

7.Department of Neurology,Johns Hopkins University School of Medicine,Baltimore,MA,USA

8.Department of NeurologyAerospace Center HospitalAerospace Clinical Medical College of Peking University,Beijing 100049,China

9.Department of Otolaryngology-Head and Neck SurgeryChinese PLA General HospitalBeijing 100853China

*Corresponding authorYANG Xu,Chief PhysicianAssociate ProfessorE-mailxuyanghangtian@163.com

WU Zi-ming,Chief PhysicianE-mailzimingwu@126.com

    Abstract  This article presents operational diagnostic criteria for benign paroxysmal positional vertigo BPPV,formulated by the Committee for Classification of Vestibular Disorders of the Bárány Society.The classification reflects current knowledge of clinical aspects and pathomechanisms of BPPV and includes both established and emerging syndromes of BPPV.It is anticipated that growing understanding of the disease will lead to further development of this classification.

    Key words  VertigoPositionalNystagmusDiagnosisCriteria

 

Sleeping Health in Obesity Prevention and ManagementLI She-yu1*,YUAN Xiang2,LI Shuang-qing3,TIAN Hao-ming1

1.Department of Endocrinology and Metabolism,West China Hospital,Sichuan University,Chengdu 610041,China

2.West China Medical School,Sichuan UniversityChengdu 610041China

3.Department of General Medicine,West China Hospital,Sichuan University,Chengdu 610041,China

*Corresponding author:LI She-yuAssociate professorMaster supervisorE-maillisheyu@gmail.com

    Abstract  Obesity is now a crucial health problem worldwide.Even with the abundant methods of dietary control,exercise intervention,drug therapy and bariatric surgery for the treatment and prevention of obesity,the prevalence is still growing rapidly.The updated understanding of obesity and its complications is desperately needed.In recent years,investigators have been focusing on sleeping health care in the prevention and treatment of obesity.Sleep restriction and eating disorders during sleep time contribute critically to obesity and its complications,while obstructive sleep apnea hypopnea syndromeOSAHS and some other sleeping disorders result from obesity.More domestic and systemic study is required about sleeping health in obesity prevention and management in China.

    Key words  ObesitySleepBody weightSleep apnea,obstructive

 

Value of Nocturnal Oximetry Saturation Monitoring in Patients with Metabolic Syndrome Associated with Obstructive Sleep Apnea-hypopnea SyndromeHU Bi12WANG Mao-yun1WANG Yi-wei1ZHANG Run1LEI Fei13LIANG Zong-an1*

1.Department of Respiratory and Critical Care MedicineWest China HospitalSichuan UniversityChengdu 610041China

2.Department of Respiratory and Critical Care MedicineChengdu Shangjinnanfu HospitalWest China HospitalS.C.UChengdu 611730China

3.Sleep Medicine CenterWest China HospitalSichuan UniversityChengdu 610041China

*Corresponding author LIANG Zong-anChief physicianProfessorDoctoral supervisorE-mail:liang.zongan@163.com

    Abstract  Objective  To probe into the clinical significance of nocturnal oximetry saturationSaO2 monitoring in patients with metabolic syndromeMS associated with obstructive sleep apnea-hypopnea syndromeOSAHS.Methods  The subjects enrolled in this study were 196 consecutive patients who complained about snoring and underwent polysomnographyPSG in the outpatient of West China HospitalSichuan University from June to August 2015.We obtained the baseline characteristics and medical history of the patients.All the patients received PSG and determination of nocturnal SaO2 with Shuqitong pulse oximetry at the same timeand their blood glucose and blood lipid monitoring and fasting venous blood samples collected on the following morning were measured.We divided the patients into 3 groups based on their BMI and accompanied MS conditions:normal weight groupn=80),obesity without MS groupn=46),and obesity with MS groupn=70.In accordance with the apnea-hypopnea indexAHI),the obese patients were divided into non-OSAHS groupn=25 and OSAHS groupn=91.We adopted receiver operating characteristicROC curves to evaluate the diagnostic value of oxygen desaturation indexODI on OSAHS in normal weight groupobesity without MS groupand obesity with MS group.Results  Patients in the obesity without MS group were olderand they had longer neck circumference and waist circumferencehigher ratios of maxillofacial abnormalities and pharyngeal stenosis compared with those in the normal weight group didP0.01;patients in the obesity with MS group were olderand they had longer neck circumference and waist circumferencehigher ratios of maxillofacial abnormalities and pharyngeal stenosishigher proportion of tonsil or tongue body hypertrophy than those in the normal weight group didP0.01;they had longer waist circumference than those in the obesity without MS group didP0.01.The detection rate of OSAHS differed significantly in the normal weight group37.5%30/80)〕,obesity without MS group 60.9%28/46)〕 and obesity with MS group90.0%63/70)〕(χ2=43.58P0.001),specificallycompared with the normal weight groupboth the obesity without MS group and obesity with MS group had higher detection rate of OSAHS(χ2=6.42P0.016;χ2=43.68P0.016;obesity with MS group had higher detection rate of OSAHS than obesity without MS group did(χ2=13.93P0.016.AHI,SIT90 and ODI of obesity without MS group were higher than those of the normal weight groupP0.05.Obesity with MS group has higher AHISIT90 and ODI and lower mean SaO2MSaO2),lowest SaO2LSaO2 than normal weight group and obesity without MS group didP0.05.Among the obese patientsthe incidence of MS was much higher in the OSAHS group than that in the non-OSAHS group69.2%63/91 vs.28.0%7/25),χ2=13.93P0.05.MSaO2LSaO2SIT90 and ODI in the non-OSAHS group were significantly different from those in the OSAHS groupP0.05.The AUC of ROC curves for ODIs diagnostic value of OSAHS in normal weight groupobesity without MS group and obesity with MS group was 0.96395%CI0.9141.000)〕,0.97095%CI0.9291.000)〕 and 0.95995%CI0.9071.000)〕,respectively.Conclusion  Nocturnal SaO2 monitoring is of certain clinical significance for initial diagnosis of MS patients associated with OSAHS.

    Key words  Metabolic syndrome XSleep apneaobstructiveBody mass indexSleepObesity

 

Effects of Obesity Degrees and Sleep Position on Obstructive Sleep Apnea Hypopnea Syndrome PatientsZHANG Run1WANG Mao-yun1WANG Yi-wei1HU Bi12LEI Fei13LIANG Zong-an1*

1.Department of Respiratory and Critical Care MedicineWest China HospitalSichuan UniversityChengdu 610041China

2.Department of Respiratory and Critical Care MedicineChengdu Shangjinnanfu HospitalChengdu 611730China

3.Sleep Medicine CenterWest China HospitalSichuan UniversityChengdu 610041China

*Corresponding author:LIANG Zong-anChief physicianProfessor,Doctoral supervisorE-mail:liang.zongan@163.com

    Abstract  Background  Obesity is a recognized risk factor for the development of obstructive sleep apnea hypopnea syndrome(OSAHS).Changing sleep position as a treatment for OSAHS has been widely recommended.Howeverfew researches exist in China for the effect of changing sleep position on OSAHS patients with different degrees of obesity.Objective  To investigate the effect of sleep position and obesity degrees on OSAHSand the relationship between positional OSAHS and anthropometric parameters of obesity.Methods  We conducted a retrospective study on 678 patients with OSAHS determined by overnight polysomnography (PSG) in West China HospitalSichuan Universityfrom January 2015 to June 2016.We obtained and analyzed the baseline and PSG characteristics of the patientsand calculated the postural dependence index.The patients were divided into 3 groups:normal weight group (n=139)

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