论文部分内容阅读
目的:研究基于胎儿心电(FECG)提取技术的便携式Monica AN24胎儿和母体心率记录仪,连续监护胎儿和母体后获得的胎儿心率数据,提取并分析胎儿微小胎心变异占比与基线均值,进而为无应激试验(NST)可疑型的处理提供更加充足的依据。方法:选取孕36~40周的42名单胎孕妇,其中NST正常组20名及可疑组22名,使用胎儿和母体心率记录仪连续记录4 h胎儿心率数据,应用MATLAB软件提取出胎心率(FHR)参数,并对不同胎儿的FHR参数进行组间比较,研究其与孕妇孕周的关系。结果:NST反应型胎儿的微小变异占整体变异的28.3%,NST可疑型胎儿则为41.9%;NST反应型胎儿的心率基线为130.1次/min,NST可疑型胎儿为135.1次/min,且微小变异占比与心率基线2个参数在两组之间具有统计学差异(t=-4.207,t=-2.185;P<0.05)。两组胎儿的微小变异占比随孕妇孕周增大而有升高趋势。结论:NST可疑型胎儿微小变异占比与基线高于NST反应型胎儿,提高试验数据量,准确找到区分两组胎儿的阈值可降低假阳性率,减少不必要的临床干预。
OBJECTIVE: To study the fetal Monica AN24 fetus and maternal heart rate recorder based on fetal electrocardiogram (FECG) extraction technology. The fetal heart rate data obtained after continuous monitoring of the fetus and maternal fetus were extracted and analyzed. The proportion of fetal fetal heart rate variation and baseline mean was extracted and analyzed. Provide a more adequate basis for the non-stress test (NST) suspicious type of treatment. Methods: Totally 42 singleton pregnant women aged from 36 to 40 weeks were enrolled in this study. Twenty pregnant women with NST normal group and 22 suspicious individuals were enrolled in this study. Fetal and maternal heart rate recorders were used to record 4-hour fetal heart rate data continuously. MATLAB software was used to extract fetal heart rate FHR) parameters, and FHR parameters of different fetuses were compared between groups to study the relationship between gestational age and pregnant women. Results: The slight variation of NST reactive fetuses accounted for 28.3% of the total variance and the NST suspicious fetuses was 41.9%. The NST reactive fetus had a heart rate of 130.1 beats / min and the NST suspicious fetus was 135.1 beats / min, Variance and heart rate baseline 2 parameters were statistically different between the two groups (t = -4.207, t = -2.185; P <0.05). The two groups of small variations in fetus with pregnant women gestational age increases and there is an increasing trend. CONCLUSIONS: The proportion of NST suspicious small fetuses is higher than that of NST reactive fetuses at baseline. Increasing the experimental data and accurately identifying the two groups of fetuses can reduce the false positive rate and reduce unnecessary clinical intervention.