Analysis of the risk factors for influenza A (H1N1) pneumonia.

Pneumonia is the most common complication of influenza A (H1N1). However, there has been no identification of any single initial symptom as an independent risk factor. In 2009, 206 patients were diagnosed with H1N1 in the Chengde area, China and they were assembled in the Chengde Hospital for Infectious Diseases.

[Radial artery recurrent branch of styloid process bone flap transfer for treatment of scaphoid nonunion].

Objective: To investigate the clinical efficacy of radial artery recurrent branch of the styloid process bone flap transfer for treatment of scaphoid nonunion.

Methods: From 2002 to 2007, 18 patients with scaphoid nonunion included 12 males and 16 females with an average age of 31.2 years old ranging from l8 to 51 years.

[A study of the prevalence of obstructive sleep apnea hypopnea syndrome in drivers].

Objective: To study the prevalence of snoring and obstructive sleep apnea hypopnea syndrome (OSAHS) in drivers in Chengde city.

Methods: The prevalence of snoring and OSAHS in drivers was investigated by a questionnaire, and some of the drivers with more severe snoring were also evaluated by polysomnographic study.

Results: Among the 718 investigated drivers, never snoring was reported in 68.

[Epidemiologic study on the relationship between smoking and sleep apnea/hypopnea syndrome].

Objective: To investigate how smoking was affecting the prevalence of sleep apnea/ hypopnea syndrome (SAHS) among adults aged over 30 years in Chengde city of Hebei province.

Methods: 1168 subjects, over 30 years of age were derived from a random sample from a community-based population in Shuangqiao district of Chengde city. All subjects responded to a questionnaire at their own houses regarding their habits of snoring and smoking.