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目的探讨空间定位系统在宫颈扩张及胎头下降程度评估方面与传统阴道指检的相关性,以及利用空间定位系统评估产程进展速度。方法选择2014年1-5月在南方医科大学南方医院分娩的182例足月单胎、头先露、无妊娠合并症或并发症且处于分娩第一产程活跃期的健康孕产妇。分别应用低磁场空间定位系统与阴道指检监测宫颈扩张及胎头下降程度,比较两者的相关性并评估产程进展速度。结果 (1)误差分析:1宫颈扩张:空间定位系统与传统阴道指检测量平均值为(5.83±2.32)cm与(5.82±2.40)cm(P>0.05),绝对误差平均值为(0.21±0.14)cm。2胎头下降:空间定位系统与传统阴道指检测量平均值为(-1.40±1.47)cm与(-1.44±1.59)cm(P>0.05),绝对误差平均值为(0.32±0.24)cm;以1 cm间距分组,两指标误差及绝对误差均<0.5 cm。(2)线性回归分析:1宫颈扩张:Y阴道指检=1.03 X空间定位系统-0.19(R2=0.989,r=0.995,P<0.05)。2胎头下降:Y阴道指检=1.05 X空间定位系统+0.03(R2=0.939,r=0.969,P<0.05)。(3)产程进展速度:1以宫颈扩张程度分组:当宫颈扩张>6 cm时胎头下降均>-1 cm,且与宫颈扩张<6 cm时对应胎头下降程度间差异有统计学意义(P<0.05);2以胎头下降程度分组:当胎头下降>-1 cm时宫颈扩张均近似>6 cm,且当胎头下降介于(-1,0)cm时对应宫颈扩张程度与其他分组间差异有统计学意义(P<0.05)。结论空间定位系统与传统阴道指检在产程监测方面呈高度相关,前者精确性更高,并且发现产程进展速度与既往有所不同。
Objective To investigate the correlation of spatial positioning system with traditional vaginal fingerprinting in the assessment of cervical dilatation and fetal head descent, and to evaluate the progress of labor process by spatial positioning system. METHODS: A total of 182 full-term singletons, first-born, non-pregnant-related complications or complications, were delivered at Nanfang Hospital, Southern Medical University from January to May 2014. The healthy pregnant women were in the active stage of labor in the first stage of labor. Application of low magnetic field space positioning system and vaginal interrogation monitoring of cervical dilatation and fetal head decline, the correlation between the two and assess the rate of labor progress. Results (1) Error analysis: 1 Cervical dilation: The mean value of spatial location system and traditional vaginal examination was (5.83 ± 2.32) cm and (5.82 ± 2.40) cm respectively (P> 0.05) 0.14) cm. (2) The fetal head descends: the average value of the spatial location system and the traditional vaginal examination is (-1.40 ± 1.47) cm and (-1.44 ± 1.59) cm (P> 0.05), and the absolute error is (0.32 ± 0.24) cm; Grouping with 1 cm spacing, the two indicators of error and absolute error <0.5 cm. (2) Linear regression analysis: 1 cervical dilatation: Y vaginal finger examination = 1.03 X space location system -0.19 (R2 = 0.989, r = 0.995, P <0.05). 2 fetal head down: Y vaginal finger examination = 1.05 X space positioning system +0.03 (R2 = 0.939, r = 0.969, P <0.05). (3) The rate of progress of labor: 1 The group of cervical expansion: when the cervical dilatation> 6 cm fetal head descent were> -1 cm, and cervical dilatation <6 cm corresponding fetal head declination difference was statistically significant ( (P <0.05) .2 The group of declining fetal head: when the fetal head descended> -1 cm, the cervical dilatation was similar to> 6 cm, and when the fetal head fell between (-1, 0) cm, The other group differences were statistically significant (P <0.05). Conclusion The spatial location system is highly correlated with the traditional vaginal examination in labor monitoring. The former is more accurate and the rate of labor progress is different from the past.