Objective To discuss the ultrasonic anatomy of gastrocnemius and its substructures in normal population. Methods Eighty gastrocnemius in 40 volunteers were scanned by real time high frequency ultrasound. Sonograms of medial and lateral heads of gastrocnemius were acquired. Plume angles between medial and lateral heads of gastrocnemius were measured at condition of rest, 5 kg and 10 kg isometric contraction. Both dominant and non-dominant legs were evaluated. Differences of plume angles were compared by ANOVA in different conditions and by t test in different legs. Results At the upper part of the muscle, both medial and lateral heads of gastrocnemius could be divided into muscular compartment, shallow compartment and deep compartment by hyperechoic intra-muscular septa with clear margin. The septa of lateral heads presented as hyperechoic side-lying′T′, while the septa of medial heads presented as hyperechoic side-lying-′T′. Vascular signals could be detected in these hyperechoic septa. The plume angle at the distal part of the lateral head of gastrocnemius was composed of shallow compartment attaching to the Achilles tendon, and that of the medial head was composed of medial muscular compartment attaching to the tendon. At rest, 5 kg and 10 kg isometric contraction, plume angles of lateral heads were (13.36±3.20)°, (13.32±3.30)° and (12.75±3.20)°, and plume angles of medial heads were (8.69±3.30)°, (8.59±2.99)° and (8.65±3.20)°. Under the same condition, plume angles of medial heads were larger than those of lateral heads and the difference was statistically signiifcant (t=9.09, 9.50 and 8.10, all P<0.01). Changes of plume angles between rest and different weight bearing conditions were small, and differences were not statistically signiifcant (F=0.89 and 0.02, P=0.41 and 0.98). Plume angles of medial heads in dominant legs and non-dominant legs were (13.66±3.60)° and (13.30±2.84)°, and those of lateral heads were (8.71±3.48)° and (8.80±3.35)°. The plume angles of medial heads were larger in dominant legs than those in non-dominant legs, while the plume angles of lateral heads were smaller in dominant legs than those in non-dominant legs. However, both differences were not statistically signiifcant (t=0.70 and 0.87, P=0.48 and 0.17). Conclusions The anatomical characteristics of medial and lateral heads and compartments of gastrocnemius can be clearly depicted by high frequency ultrasound. Plume angles can also be accurately measured.

Objective To investigate the prevalence of SEN virus(SENV)infection in patients with chronic hepatitis gravis before and after plasma exchange,and its influences on liver function.Methods Two subtypes of SENV,SENV-D and SENV-H were detected in sera from 40 patients with chronic hepatitis gravis before and after plasma exchange.The changes of liver function were also tested before and after plasma exchange.Data analysis was done by t test and ehi-square test.Results Among 40 patients with chronic hepatitis gravis,SENV-D positive rates before and after plasma exchange were 27.5%(11/40)and 42.5%(17/40),respectively,and SENV-H positive rates before and after plasma exchange were 27.5%(11/40)and 50.0%(20/40),respectively,which were all significantly different(X2=4.17,X2=7.11,both P<0.05)between before plasma exchange and after plasma exchange.And after the treatment of plasma exchange,serum alanine aminotransferase(ALT)level was(164±75)U/L in SENV positive patients,which was significantly higher than that in SENV negative patients[(48±12)U/L,t=3.13,P<0.05].But there were no significant differences of other liver function indexes between SENV positive and negative groups.Condusions SENV can be transmitted via plasma exchange.SENV coinfection may influence the restoration of liver function in patients with chronic hepatitis gravia after the treatment of plasma exchange.

Objective To investigate the quantitative relationship between the changes of the parameters of Three-Electrode System and the Current following through WE (Farad current and Nonfarad current ). Methods We built a model based on the driving voltage-current system,which could describe the parameters of system and present the influence of current by changing parameters. Results The results of studying two simulational models accord with experiments of electrical chemistry. Conclusion This study provides an estimated value and influence of the electrochemistry noises,which is significant for data accuracy and anti-jamming of electrochemistry products.

Repeat cervical cytologic testing,human papillomavirus(HPV)testing and immediate colposcopy are currently the most general managements in women with atypical squamous cells of undetermined significance(ASCUS)result.However,the efficacy of these three methods is hampered by strong subjectivity,high false negative and positive rates.With the development of the aetiology of cervical cancer,there is good evidence that biomarkers for persistent HPV infection,HPV integration,instability of host genes and malignancy triage ASCUS more objectively and efficiently.The three-dimensional multiparameter biomarker-based detection may be the predominant method for the triage of women with abnormal cervical cancer screening result.

Objective To observe the therapeutic effect of modified Buyang Huanwu decoction combined with betahistine hydrochloride in the treatment of vertebral-basilar artery ischemic vertigo and its influence on hemorheological index.Methods 80 patients with vertebral-basilar artery ischemic vertigo were randomly divided into observation group and control group,40 cases in each group.The control group was given betahistine hydrochloride 12 mg,three times a day.The observation group was given modified Buyang Huanwu decoction on the basis of the control group, 4 weeks for a course.The DARS and DHI were measured before and after 4 weeks of treatment.The blood flow velocity was detected by transcranial Doppler ultrasonography, the difference of clinical curative effect between the two groups was compared.Results After treatment, the DARS and DHI scores of the observation group and control group were significantly decreased(t=14.716 and 5.258,20.662 and 14.609,all P<0.01).The DARS and DHI scores in the observation group were significantly lower than those in the control group (t=3.644,7.116,all P<0.05).After treatment,the average blood flow velocity of the vertebral artery, right vertebral artery and basilar artery in the observation group and the control group were significantly increased(t=11.216 and 7.447,10.103 and 7.204,11.303 and 6.642,all P<0.01).The average blood flow velocity of the vertebral artery, right vertebral artery and basilar artery in the observation group were significantly higher than those of the control group (t=4.405,4.761,5.824,all P<0.01).The total effective rate of the observation group was 95.00% (38/40),which was significantly higher than that of the control group (77.50%,31/40), the difference was statistically significant (Z=-2.000,P<0.05).Conclusion Modified Buyang Huanwu decoction combined with betahistine hydrochloride is effective in the treatment of vertebro-basilar ischemic vertigo.It can improve the blood supply to the brain and relieve the symptoms of vertigo, which is worthy of popularization and application.

Objective To study the relationship between the virus content of high risk HPV and cervical intraepithelial neoplasia(CIN).Methods 450 patients with cervical intraepithelial neoplasia (CIN) were selected as the observation group ,450 healthy women at the same time were the control group ,then the positive rate and content of the control group and observation group with different high risk HPV types were detected and compared ,then the detection results of observation group with different CIN classification were compared too ,and the relationship of the detection indexes between the CIN were analyzed by the Logistic analysis .Results The HPV DNA positive rate of observation group with different high risk types were 9.11%,6.67%,6.67%,6.67%and 6.00%,respectively,and they were all higher than those of control group (χ2 =6.871,6.240,6.240,6.240,5.871,all P<0.05),and the positive rate of patients with different CIN classification had obvious differences too ,the virus content and constitution of observation group were respectively (301.35 ±32.67) Copies/mL and 11.56%,10.22%,9.56%,and they were all obviously higher than those of control group (t=6.276,χ2 =7.132,6.915,5.878,all P<0.05),and the content of patients with different classification had obvious differences ,all P<0.05,there were all significant differences ,and the item had close relationship to CIN by the Logistic analysis .Conclusion The high risk HPV virus content of patients with cervical intraepithelial neoplasia shows abnormal state ,and which have close relationship to the disease .

Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Mining ; Noninvasive Ventilation ; Pneumoconiosis ; rehabilitation ; Treatment Outcome

Objective To determine the perioperative hidden blood loss (HBL) associated with different fixation methods for intertrochanteric fracture.Methods We retrospectively studied 128 patients with 31-A1 and 31-A2 intertrochanteric fractures which underwent internal fixation with dynamic hip screw (DHS,n=35),short reconstruction intramedullary hip screw (IMHS,n=55) or percutaneous compression plate (PCCP,n=38) from January 2008 to January 2012.The HBL were calculated and compared.Results The mean total hidden blood loss (THBL) was more than 7 times than the mean apparent blood loss (ABL) in all the three groups.For the THBL,there were significant statistical differences among three groups; no difference was found between IMHS and DHS group.For the phasic hidden blood loss (PHBL),there was no difference among the three phase of treatment in DHS group.But in IMHS and PCCP group,there were significant differences between the 4th-5th day and the 1st day,the 2nd-3rd day after operation; no difference was found between the Ist and the 2nd-3rd day.For the ratio of PHBL/THBL there were significant differences between the 4th-5th day and the 1st day,the 2nd-3rd day after operation; but no statistical differences were found between the 1st day and the 2nd-3rd day after operation.Conclusion It can be concluded that HBL after surgery for intertrochanic fractures is much greater than that observed intra-operatively.The IMHS and DHS cause more HBL than PCCP.Frequent post-operative measurements of haemoglobin are necessary,especially the first three days after surgery.

Objective To investigate the value of brainstem auditory evoked potential (BAEP) in early diagnosis of severe hand,foot and mouth disease (HFMD) with the nervous system damage.Methods BAEP was performed in 297 cases with HFMD.The patients were divided into 4 groups by the HFMD clinical classification and their ages.Group A included the general cases who were younger than three years (n =80).Group B included the severe cases who were younger than three years(n =94).Group C included the general cases who were three years or older(n =38).Group D included the severe cases who were three years or older(n =85).The electroencephalogram (EEG) and MRI results of patients in the groups were retrospectively studied and the results were compared with that of BAEP.Results (1) The BAEP abnormal rate of group B (18/94,19.15％)was higher than that of group A (3/80,3.75％),and the BAEP abnormal rate of group D (13/85,15.29％) was higher than that of group C (1/38,2.63％) (P ＜ 0.05).(2) The EEG abnormal rate in group B was low(2/94,2.13％) and there was no case with abnormal EEG in group A.(3) The EEG abnormal rate of group D (49/85,57.65％) was higher than that of group C (6/38,15.79％) (P ＜0.05),and higher than the BAEP abnormal rate of group D.(4) The MRI abnormal rate of group B (9/94,9.57％) was higher than that of group A (1/80,1.25％) (P ＜ 0.05),and the MRI abnormal rate of group D (9/85,10.59％)was higher than that of group C (0).(5) The BAEP abnormal rate of the children with severe HFMD (31/179,17.32％) was higher than the MRI abnormal rate (18/179,10.06％) (P ＜0.05).Conclusion BAEP has clinical significance for early diagnosis of severe HFMD with nervous system damage,and can provide objective basis for the diagnosis.

Aim To investigate the effects of L-type calcium channel blockers on tramadol-induced analgesia.Methods Hot-plate test and writhing test were used to measure the analgesia induced by tramadol. Verapamil, nimodipine or nifedipine was co-administrated with tramadol to determine its effects on tramadol analgesia.Results Tramadol (10, 20, 40 mg?kg -1 in hot-plate test or 2, 5,10 mg?kg -1 in writhing test) produced significantly analgesia in hot-plate test and writhing test. Co-administration of verapamil and tramadol prolonged the latency of pain response of mice in hot-plate test.In writhing test, verapamil, nimodipine and nifedipine could potentiate the analgesic effect of tramadol in a dose-dependent manner.Conclusion L-type calcium channel blockers can potentiate tramadol-induced analgesia. Calcium influx mediated by L-type calcium channels may be involved in tramadol-induced analgesia.