Kouskouti Christina, Jonas Hella, Regner Kerstin, Ruisinger Pia, Knabl Julia, Kainer Franz
Department of Obstetrics and Perinatal Medicine, Klinik Hallerwiese, St. Johannis-Mühlgasse 19, 90419 Nuremberg, Germany, Tel.: +49 162 7929487, +49 911 33402355, Fax: +49 911 33402301.
Department of Obstetrics and Perinatal Medicine, Klinik Hallerwiese, St. Johannis-Mühlgasse 19, 90419 Nuremberg, Germany.
J Perinat Med. 2018 Aug 28;46(6):599-604. doi: 10.1515/jpm-2017-0035.
Currently one of the most widespread systems for the computerized analysis of the fetal heart rate (FHR) is the Dawes-Redman system, where the short-term variation (STV) of the FHR is measured by dividing each minute into 16 segments (STV16). Technical progress has allowed for the development of a new algorithm, which measures the STV by dividing each minute into 240 segments (STV240), thus approximating the beat-to-beat variation. The STV240 still lacks reference values. Our aim was to develop clinically relevant reference values for the STV240 and compare them to the ones for the STV16.
In a single centre, observational study, a total of 228 cardiotocograms were registered and subsequently analyzed with both algorithms (STV240 and STV16).
The 95% confidence interval (CI) was calculated for both algorithms. The values of the STV240 were significantly lower in comparison to the ones of the STV16. Not only the mean values but also the 95th percentile of the STV240 lay beneath the existent cut-off value for the STV16.
Every clinician using the new algorithm must be aware that the normal values for the STV240 lie beneath the, up until now, established cut-off values for the STV16.
目前，用于胎儿心率（FHR）计算机分析的最广泛使用的系统之一是道斯-雷德曼系统，该系统通过将每分钟划分为16个时间段（STV16）来测量FHR的短期变异（STV）。技术进步催生了一种新算法，该算法通过将每分钟划分为240个时间段（STV240）来测量STV，从而近似逐搏变异。STV240仍缺乏参考值。我们的目的是制定与临床相关的STV240参考值，并将其与STV16的参考值进行比较。
在一项单中心观察性研究中，共记录了228份胎心监护图，并随后使用两种算法（STV240和STV16）进行分析。
计算了两种算法的95%置信区间（CI）。与STV16相比，STV240的值显著更低。不仅STV240的平均值，而且其第95百分位数都低于STV16现有的临界值。
使用新算法的每位临床医生都必须意识到，STV240的正常值低于迄今为止确定的STV16临界值。
