Objective To observe the concentration effects of alcohol in perineurial block on the structure and function of sciatic nerve and it's innervated muscles in rats so as to provide the basis for clinical application of chemical neurolysis.Methods One hundred and fifty female Sprague-Dawley rats were used and randomly assigned into a blank group(BG,n =6),a control group(CG,n =36),a 50％ alcohol group(50G,n =36),a 75％ alcohol group(75G,n =36)and a 99.9％ alcohol group(99.9G,n =36).The CG received physiological saline injection,the 50G,75G,99.9G received corresponding concentrations alcohol perineurial block,respectively.Changes of motor function was assessed,electrophysiological and histomorphological observations of sciatic nerve and its innervated muscles were conducted before and at 24 h,72 h,1 week,4 week,12 week after block.Results(① Hypokinesia and decrease of motor conduction velocity(MCV)were observed at 24 h after block,and peaked at 72 h after block; at 1 week after block,the motor function and MCV improved,the improvement persisted to the 12th week (P ＜ 0.05); but at the 12th week,MCV was still slower than that before block(P ＜ 0.01).②There were significant differences with regard to motot function and MCV of sciatic nerve among 99.9G and the other groups at e ery time point after block(P ＜0.05); ③ Reversible dengeneration of sciatic nerve and hind limb muscle,nonreversible necrosis of muscle occurred more seriously with the increase of alcohol concentration,and the cicatrization in 99.9G was more obvious than that in 50G and 75G at the 12th week; ④Structural lesion of sciatic nerve occurred at 24 h after block and peaked at the 72th h,myelinated axonal sprouts appeared at 1 week after block and persisted to the 12th weck.Conclusions ① The effects of 99.9 ％ alcohol perineural block on the structural lesion,motor function and MCV of sciatic nerve and its related muscle were more obvious than those of 50％ and 75％ alcohol; ② The destructive effect of alcohol block would maintain more than 12 week and neural restoration would maintain more than 12 weeks too.

Objective To investigate the compliance of follow-up and the associated factors of diabetic retinopathy screening among diabetes patients in Muping District,Yantai City.Methods 438 diabetes patients who received free diabetic retinopathy (DR) screening in Traditional Chinese Medicine Hospital of Muping District of Yantai City from April 2012 to June 2013 were enrolled in the cross-sectional study.The re-examination rate at five years later,as well as the possible associated factors,including age,gender,height,weight,education level,occupation,past medical history,smoking and drinking habits,diabetes process,diabetes medication history,severity of DR,glycosylated hemoglobin (HbA1 c),renal functionand blood lipid were analyzed and evaluated.Results Among 438 patients,159 returned for check up five years later,with a follow-up rate of 36.3％.Further analysis revealed that follow-up rate was related to occupation types (P =0.003) and HbAlc level (P =0.006).Other factors did not show statistical significance (P ＞ 0.05).Conclusions The compliance of DR screening visits is related to occupational type and blood glucose control.It is suggested that in the screening of DR in China,we should pay attention to the propaganda and education of diabetic patients to control blood glucose,and focus on some occupational diabetes people,such as housework workers and farmers.

Objective To investivate the effects of VocaStim?-Master electrical stimulation and pharyngeal muscles training on sleep breathing parameters, clinical symptoms and cognitive functions in stroke patients with obstructive sleep apnea syndrome (OSAS). Methods From December 1st, 2014 to November 30th, 2017, 50 stroke patients complicated with OSAS were divided into control group (n = 25) and research group (n = 25). All the patients received routine medicine and rehabilitation, while the research group accepted VocaStim?-Master electrical stimulation and pharyngeal muscles training in addition, for four weeks. Their symptoms were observed, and tested with polysomnography (PSG) and Mini-Mental State Examination (MMSE) before and after treatment.Results After treatment, the clinical symptoms improved (P < 0.05), while apnea hypopnea index (AHI) (t > 2.270, P < 0.05)and oxygen desaturation index (t > 3.044, P < 0.01) decreased, and average oxygen saturation (SaO2) and lowest SaO2 increased (t > 3.095, P < 0.01), in the research group, compared with those before treatment and those in the control group (P < 0.05), the scores of MMSE increased (t > 2.859, P < 0.01). There was no significant difference of AHI, averge SaO2, lowest SaO2 and oxygen desaturation index during the period of treatment in the control group (P > 0.05), nor for the score of MMSE.Conclusion VocaStim?-Master electrical stimulation combined with pharyngeal muscles training could effectively ameliorate nocturnal sleep apnea symptom and improve cognitive functions in stroke patients complicated with OSAS.