For the high cost and mobility issues, a home uterine contraction pressure monitoring system based on Windows CE platform was developed. In this paper, the design of hardware circuit, micro-controller system and LabVIEW program based on Windows CE are discussed. The clinical validation experiment in hospital for this system was made and the experimental results show that this system complies with the trend that current medical equipment is becoming portable, homely and networked. Through real-time monitoring uterine contraction pressure, occurrence of premature birth and abortion can be prevented effectively.
Female ; Humans ; Monitoring, Physiologic ; instrumentation ; Pregnancy ; Uterine Contraction

Objective To explore the effect of thyroid hormone on bone metabolism.Methods The thyroid in the rabbits had been cut off and the physics and histology of the bone in the rabbits were observed.The therapeutic effect of exterofection thyroid hormone was also observed.Results The lacking or reducing of thyroid hormone could lead to osteoporosis.The substitutive treatment of T_4 could partially inhibit the oesteopenia.Conclusion When the T_3 level equals to the level of T_4,the oesteopenia of the rabbits with thyroid being cut off may be caused by the lack of calcitonin.

Objective To explore the effectiveness and adverse effect of high frequency oscillation ventilation (HFOV) combined with Sildenafil (SIL) treatment on newborns with persistent pulmonary hypertension (PPHN).Methods A total of 89 cases of PPHN infants collected from Chengdu Women and Children's Central Hospital from Sep.2010 to Sep.2012 were randomly divided into HFOV group,constant mechanical ventilation (CMV) group,HFOV combined SIL group (HFOV + SIL group) and CMV combined with SIL group (CMV + SIL group).The arterial blood gas,pulmonary artery pressure (PAP) and adverse reactions were monitored before and 3 days after treatment.SNK multiple comparison method andx2 test were performed for data before and after treatment among groups for continuous variables and categorical variables,respectively.Results The levels of pa (O2) [(79.1 ± 13.7) mmHg (1 mmHg =0.133 kPa),(77.9 ±14.6) mmHg,(85.4 ±15.2) mmHg],Sa(O2) [(87.8 ±13.4)％,(88.4±15.6)％,(96.1±15.9)％],pa(CO2)[(42.5±11.3) mmHg,(40.2 ±10.5) mmHg,(35.6 ±8.7) mmHg] and PAP [(31.1 ± 8.1) mmHg,(30.4 ± 9.5) mmHg,(25.8 ± 7.3) mmHg] were all improved significantly in CMV + SIL group,HFOV group and HFOV + SIL group compared with those in CMV group[(69.9 ± 12.3) mmHg,(81.1 ± 14.9)％,(48.1 ±9.5) mmHg,(35.6 ±8.9) mmHg] (F =4.629 3,3.673 2,5.865 3,4.849 5,P ＜0.05),especially for HFOV + SIL group(P ＜ 0.05).No significant difference in such indicators was observed between CMV + SIL group and HFOV group (P ＞ 0.05).The effective rate in HFOV + SIL group (90％) was the highest among the 4 groups (x2 =7.938,P ＜ 0.05).During the treatment,all neonates have no adverse reaction.Conclusion The combined use of SIL and HFOV might be a more effective and safer method in the treatment of PPHN of neonate.

OBJECTIVE To investigate the improvement effects of azithromycin on bronchopulmonary dysplasia （BPD） in neonatal rats based on hypoxia-inducible factor-1α（HIF-1α）/HIF-2α/vascular endothelial growth factor （VEGF） pathway. METHODS Sixty newborn SD rats were randomly divided into negative control group （NC）， BPD group， azithromycin group and budesonide group （positive control）， with 15 rats in each group. Rats in NC group were given normal breathing air， while rats in other three groups were exposed to high-concentration oxygen for 14 days to establish BPD rat models. After successful modeling， rats in azithromycin group were intraperitoneally injected with azithromycin 200 mg/kg， and rats in budesonide group were atomized with budesonide 1.5 mg/kg once a day for 14 consecutive days， while rats in BPD group and NC group were not treated. Pathological changes of lung tissue， radial alveolar count and mean alveolar intercept of rats were observed in each group. The white blood cell count in bronchoalveolar lavage fluid （BALF） and the levels of tumor necrosis factor-α （TNF-α）， interleukin-6 （IL-6）， IL-1β， superoxide dismutase （SOD）， catalase （CAT） and malondialdehyde （MDA） were detected； mRNA and protein expressions of VEGF， HIF-1α， HIF-2α were also detected. RESULTS Compared with NC group， the lung tissue in BPD group was obviously damaged； the white blood cell count， average alveolar intercept and the levels of TNF-α， IL-6， IL-1β and MDA were significantly increased； the radial alveolar count， SOD and CAT levels， the relative expressions of VEGF， HIF-1α， HIF-2α mRNA and protein were significantly decreased （P＜0.05）. Compared with BPD group， the changes of the above indexes in azithromycin group and budesonide group were significantly reversed （P＜0.05）. CONCLUSIONS Azithromycin can obviously improve the symptoms of BPD in rats， reduce inflammation and oxidative stress， and exert lung protection， the mechanism of which may be realized by activating HIF-1α/HIF-2α/VEGF pathway.