The objective of this meta-analysis was to investigate the additional effect of ST Analysis in electronic fetal monitoring. In order to overcome the shortcomings of conventional meta-analysis that uses aggregated data, the present analysis used individual participant data to allow for a more thorough investigation by taking all information into account, including accounting for missing data.
Only four of the five published randomised controlled trials (RCT) were included in the analysis. The first RCT by Westgate et al. was …

The objective of this retrospective study was to investigate the incidence of heart rate accelerations coinciding with contractions during the second stage of labour when monitored either with abdominal ultrasound (external) or scalp electrode (internal).

Data from five years of clinical usage of ST Analysis and Stan at the Labour and Delivery ward at Haukeland University Hospital in Bergen, Norway is reported in this prospective observational study. The study was defined as a project of quality improvement, and included a total of 22,475women selected for vaginal delivery.

In this sub-analysis of the Dutch randomised trial it is shown that cases with adverse outcome in the index group (CTG+ST analysis) could have been avoided by stricter adherence to Stan guidelines. Improved CTG interpretation and timing of fetal blood sampling could have led to better outcomes in the control group.

Dr. Timonen from Turku University Hospital, Finland presented a poster with their experience of ST Analysis at the recent Soc. for Maternal-Fetal Medicine (SMFM) congress in Dallas USA. The rate of metabolic acidosis was reduced with 79% when the first four years of ST Analysis usage were compared to the six following years in patients monitored with CTG+ST. During the same period the number of fetal scalp blood measurements was substantially reduced as well as the rate of total cesarean …

In the European Stan Expert meeting in 2009, the interpretation of a high baseline T/QRS ratio at the start of a registration was discussed since some cases with high baseline T/QRS followed by metabolic acidosis had been encountered. The baseline T/QRS is the absolute value of the T/QRS ratio at the start of a Stan recording, and is currently only used for comparison with later changes indicating a rise in the T-wave of the fetal ECG.

The objective of this meta-analysis, which includes five randomised trials (RCT) and 15,352 patients, was to compare the effects of adding ST Analysis to conventional intrapartum CTG. The included RCT’s evaluated singleton term pregnancies in cephalic presentation and the meta-analysis was performed on results for metabolic acidosis, fetal blood sampling, mode of delivery, Apgar score and neonatal care. For three of the studies, published corrected data were used and the meta-analysis could be performed on all data according to the intention-to-treat principle.

The aim of this prospective randomized study was to compare the effectiveness of pulse oximetry and ST Analysis of the fetal ECG, and to determine which method was better at identifying the labour which could continue to deliver a healthy newborn.

The objective of this revision was to compare the results of the current standard intention-to-treat (ITT) analysis with the results of the previously published Swedish randomised controlled trial (RCT), and to perform a retrospective quality control and reanalysis of the data.

The Dutch Randomized Controlled Trial on ST Analysis is published in the June issue of Obstetrics & Gynecology – The Green Journal. The trial is one of the largest ever within obstetrics, and it confirms the results from the previous RCTs with the conclusion that ST Analysis as an adjunct to CTG “…substantially decreases the incidence of (metabolic) acidosis.”
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Large randomized controlled study1 from Utrecht in the Netherlands confirm the clinical benefits of ST Analysis
This …