Changes in heart rate of fetal is function regulating performance of the circulatory system and the central nervous system, it is significant to detect heart rate of fetus in perinatal fetal. This paper puts forward the fetal heart rate detection method based on short time Fourier transform and blind source separation. First of all, the mixed ECG signal was preprocessed, and then the wavelet transform technique was used to separate the fetal ECG signal with noise from mixed ECG signal, after that, the short-time Fourier transform and the blind separation were carried on it, and then calculated the correlation coefficient of it, Finally, An independent component that it has strongest correlation with the original signal was selected to make FECG peak detection and calculated the fetal instantaneous heart rate. The experimental results show that the method can improve the detection rate of the FECG peak (R), and it has high accuracy in fixing peak(R) location in the case of low signal-noise ratio.
Electrocardiography ; Fetus ; Heart Rate, Fetal ; Humans

A computerized fetal ECG(FECG)system is presented,w hi ch is composed of two components.One is the data collection device with a PIC m icrocomputer as the main hardware,which has low power consumption and gets power supply through serial port.The other is a software platform based on PC,which i s built through LabView6.1,a graphic programming language.Plenty of modules prov ided by LabView6.1utilized,it is efficient to develop the software platform.In particular,the implementation of the matched filtering algorithms is introduced ,which is the core of the software platform.A new method of updating templates o f matched filter is described.

Objective To investigate the changes of blood cell distribution width and D-dimer in patients with chronic obstructive pulmonary disease.Methods 60 cases with chronic obstructive pulmonary disease were selected and according to the course of disease were divided into two groups.30 healthy people were selected to be the control group.MCV, RDW and D-dimer were detected and compared.ResuIts Compared with the control group, MCV and RDW of acute phase group and remission stage group are higher(P<0.05), compared with the remission stage group, MCV and RDW of acute phase group were higher(P<0.05), and RDW and MCV in the acute stage group were positively correlated with the remission stage group (r=0.717, 0.902, P<0.05).Compared with the control group, D-dimer of acute phase group and remission stage group were higher(P<0.05), compared with the remission stage group, D-dimer of acute phase group were higher(P<0.05), and D-dimer in the acute stage group were positively correlated with the remission stage group (r=0.727, P<0.05).ConcIusion The distribution of blood cell distribution width and D-dimer levels in patients with chronic obstructive pulmonary disease in acute stage and remission stage group were increased, and the increasing of patients with chronic obstructive pulmonary disease in the acute stage is more obvious.

Gastric cancer(GC) is deeply threatening the health of our people, the mortality rate of GC is the second death cause of carcinoma i n our country. Since the lack of special clinical symptom at the early state of GC, detecting GC at the molecular biological level is expected to diagnose early gastric cancer. This article discusses some markers such as PCNA, p53, telomera se, ras protein and so on to assess the possibility of diagnosing the early gas tric cancer with these molecular biological markers. According to analyzing rela ted papers published, PCNA and p53 were found to be the molecular biological mar kers which should be firstly taken into account in diagnosing gastric cancer. Bo th of them can be easily detected by using immunohistochemical method. Telomeras e is also a good marker, but because of its difficult technology and high cost, it is not so practicable as the former two as the diagnostic marker of early gas tric cancer. Besides, ras potein can also be taken into account as the early det ecting auxiliary marker for GC.

BACKGROUND: The meniscal allograft transplantation has been proved good outcome in clinical, however, the source and matching restrict its application. By means of a patent technique of separating antigen, a new biological meniscus can be obtained.OBJECTIVE: To observe the histological changes of transplanted biological meniscus in goat's knee joint, in addition, to investigate the feasibility of reconstituting meniscus by using biological meniscus. DESIGN, TIME AND SETTING: The animal experiment of goats was performed at the Central Laboratory in the Third Affiliated Hospital of Sun Yat-sen University between June 2005 and June 2006.MATEAIALS: A total of 15 healthy goats were used in the experiment. Fresh porcine meniscus was harvested for the preparing of biological meniscus.METHODS: The medial meniscus of goat was excised, and then the absent part was repaired using biological meniscus. MAIN OUTCOME MEASURES: The animals were sacrificed at months 1, 3, 6 and 12 after operation. And the samples were detected by histology, scanning electron microscopy (SEM) and Indian ink perfusion. RESULTS: The incision of all animals healed well, without infection or death. The transplanted meniscus healed well with the surrounding tissue, and the connection was tight. With time prolonged, the transplanted meniscus slowly soaked, and live cells existed inside the meniscus, but there were no live cells in about 1/4 district at 1 year after the surgery. Indian ink perfusion showed that the surrounding tissue grew inside and set up microcirculation, but only limited to 10% periphery of the meniscus (normal goat approximately 15%). The transplanted meniscus began the necrosis at 6 months after surgery. Under SEM, the surface of the meniscus became crude and cracked in some places, but still maintains the gross shape at 1 year after the surgery.CONCLUSION: There is no obvious rejection after the biological meniscus was transplanted into knee joint of goats. During the process of absorption, autologous tissue of goats can grow into and set up microcirculation in the transplanted meniscus. The transplanted meniscus protects the'knee cartilage notably, only slightly damage in cartilage can be observed.

Objective To investigate effect of autologous hematopoietic stem cell transplantation on serum trace elements and lactate dehydrogenase activity in patients with malignant lymphoma.Methods 80 patients with malignant lymphoma collected in our hospital from May 2013 to May 2014,40 cases in each group, Hodgkin lymphoma ( HL) patients were treated with ABVD ( doxorubicin, bleomycin, vincristine, dacarbazine) regimen of chemotherapy; Non-Hodgkin,s lymphoma ( NHL) patients were treated with standard CHOP ( cyclophosphamide, vincristine, epirubicin, dexamethasone) regimen of chemotherapy of two group.Chemotherapy drugs combined with granulocyte colony stimulating factor ( G-CSF) was used to mobilize APBSC.Application of 10μg/(kg? d)G-CSF 5 in bone marrow suppression after chemotherapy, detected white cell increased 3.0 ×109/L , platelets rose to 50 ×109/L, collected APBSC,The frozen stock solution of cell was joined and frozen.24 h after pre-treatment, the frozen peripheral blood hematopoietic stem cells of the subclavian vein was transfused for patients in experimental group.Control group continued to receive chemotherapy. After treatment, the Cu level, Zn level and lactate dehydrogenase activity were detected in all patients.ResuIts After treatment, Zn levels of two groups increased (P<0.05), Cu and Cu/Zn levels decreased (P<0.05).Compared with control group, the level of Zn was higher in experimental group (P<0.05), and the level of Cu and Cu/Zn was lower (P<0.05).After treatment, the lactate dehydrogenase activity of two groups decreased (P<0.05), and experimental group was more lower than control groupy (P<0.05).ConcIusion Autologous hematopoietic stem cell transplantation can significantly reduce the level of Cu in patients with malignant lymphoma , elevate Zn level and decrease the activity of lactate dehydrogenase, which has guiding significance for clinical.

[Objective]To determine the incidence and factors associated with pyrexia after total knee replacement(TKR).[Method]A retrospective review of 200 patients in departments of orthopaedics of our hospital and West China hospital who underwent TKRs from August 1998 and April 2006 was performed.The clinical,surgical and follow-up data were abstracted from the patients' records and were analyzed with SPSS 12.0.[Result]There was a statistically significant increase of the mean temperature post-operations,which remained significant throughout the first 7 days after surgeries(P

ObjectiveTo explore the correlation between cortactin differential expression and metastasis of colorectal cancer by testing the expression of cortactin in cell sublines with different metastatic ability.MethodHuman colon cancer cell line SW1116, and sublines of fifth subcutaneous ( SW1116_5), first, fifth generation (CRCLM1 、CRCLM3 ) characteristic of different liver metastasis were implanted subcutaneously in BALB/c mouse.Tumors were transplanted into the colon, and liver metastasis was observed, Western blotting and real time-PCR was used to detect the varience of cortactin. Transwell assay was applied to evaluate four cell lines migration and invasion ability. Immunohistochemistry was used to analyze the relationship of cortactin and clinicopathological characterizing in 86 cases of colorectal cancer.ResultCRCLM3( 100％ )has higher ability of metastasis than that of CRCLM1 ( 89％ ), SW1116(40％ )and SW1116_5 (44％) respectively. Expression of cortactin in the SW1116, SW1116_5, CRCLM1,CRCLM3 was gradually increased. There were significant differences between four cell lines by comparison between each others ( P ＜ 0.05 ). Immunohistochemical expression of cortactin in 86 cases was positive in 57 cases(66％ ), and negative in 29 cases (34％).ConclusionsDifferent expression of cortactin with colorectal cancer metastasis and clinical stage was positively correlated. Cortactin is a potential indicator for clinical staging and tumor metastasis of colorectal cancer.

BACKGROUND:Pedicle is the strongest bone structure for the connection between vertebrae and lamina, and the screw fixation through pedicle can provide reliable mechanical basis for the reconstruction of spinal stabilization.
OBJECTIVE:To analyzed the three-dimensional analogue measurement parameters of lumbar pedicle, in order to improve the accuracy and stability of the clinical application of pedicle screw fixation.
METHODS:The original CT data of the spine (L 1-L 5 ) related diseases patients who treated with pedicle screw were analyzed, and the three-dimensional multiplanar reconstruction imaging model was established with Mimics software. By the using of the Mimics software, the lumbar three-dimensional construction was conducted, and the screw length, diameter, transverse section angle and sagittal section angle were predicted, and then statistical y compared with the actual data of the patient postoperative.
RESULTS AND CONCLUSION:Case analysis showed that the position and the length of the screw were good without screw offset and fracture after internal fixation. There were no significant differences in the screw length, diameter, transverse section angle and sagittal section angle between the preoperative predicted parameters and the actual parameter after fixation (P>0.05), while the sagittal section angle of partial segments were smal er than the actual measure value (P<0.05). The lumbar three-dimensional reconstruction and simulation of pedicle screws placement through Mimics software can precisely guide the actual screw placement and improve the safety of pedicle screws placement.

Objective To investigate the effect of treatment for frozen shoulder by manipulation release combined with hydraulic pressure distension.Methods In this randomized trial,78 patients with frozen shoulder syndrome randomly divided into three groups were enrolled in the study.28 patients were treated by manipulation release under interscalene brachial plexus anesthesia.23 patients were treated by sodium hyaluronate injection into glenohumeral joint combined with manipulation release.27 patients were treated by hydraulic pressure distension combined with manipulation release.All patients were followed for six months.Effective rate evaluation combined with pain evaluation and functional evaluation were adopted for final evaluation.Results There were significant difference between pre-treatment and post-treatment in each group.Effective rate of hydraulic pressure distension combined with manipulation release was 92.6%,which was superior to manipulation release (78.6% ) and sodium hyahronate injection combined with manipulation release ( 82.6% ).There were no significant difference in functional evaluation of the three groups.Conclusion Hydraulic pressure distension combined with manipulation release under interscalene brachial plexus anesthesia is a successful treatment for idiopathic frozen shoulder.