Abstract:
AIM:To evaluate values and variability of T/QRS ratios between 28 and 42 weeks' gestation in term and post-term pregnancies using non-invasive methods with electrodes placed over the maternal abdomen. METHODS:Fetal electrocardiograms were recorded from 657 women with singleton pregnancies. Recorded signals were analyzed by KOMPOREL software from ITAM (Zabrze, Poland) and the T/QRS ratios were automatically calculated. The analyses were performed in subgroups according to gestational age. The T/QRS ratio variables were calculated; one-way analysis of variance (ANOVA test) and linear regression were carried out. RESULTS:The T/QRS ratio was successfully measured in 95.4% (n=627) of patients during 30 min recordings. Values of T/QRS ratio variables changed during pregnancy. The mean T/QRS ratio ranged between 0.134 in the 41st gestational week and 0.178 in the 35th gestational week. Mean minimal and maximum values of the T/QRS ratio ranged between 0.02 and 0.29 [x=0.09; standard deviation (SD)=0.05] and 0.08 and 0.5 (x=0.27; SD=0.1), respectively. The highest values occurred in pre-term and post-term pregnancies. CONCLUSIONS:Measurement of the T/QRS ratio is one of the techniques used for non-invasive fetal distress assessment that can be used in antepartum fetal monitoring. Values of T/QRS ratio variables changed during pregnancy from higher in pre-term pregnancies, lower in the peripartum period and rose again in post-term pregnancies. The study provides more insight into the values of T/QRS ratios during pregnancy; however, additional research is required.
journal_name
J Perinat Medjournal_title
Journal of perinatal medicineauthors
Fuchs Tdoi
10.1515/jpm-2013-0181subject
Has Abstractpub_date
2014-05-01 00:00:00pages
349-57issue
3eissn
0300-5577issn
1619-3997pii
/j/jpme-ahead-of-print/jpm-2013-0181/jpm-2013-0181journal_volume
42pub_type
杂志文章abstract::The aim of the present investigation is to study the effect of amniotic fluid myoglobin on prostaglandin synthesis by the fetal membranes. The paper presents results of radioimmunologic studies of myoglobin levels in various biological fluids during pregnancy: amniotic fluid, maternal serum samples obtained from an an...
journal_title:Journal of perinatal medicine
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journal_title:Journal of perinatal medicine
pub_type: 杂志文章,评审
doi:10.1515/jpm-2016-0074
更新日期:2017-02-01 00:00:00
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journal_title:Journal of perinatal medicine
pub_type: 杂志文章
doi:10.1515/jpme.1982.10.2.99
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pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1515/jpme.1988.16.5-6.437
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journal_title:Journal of perinatal medicine
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doi:10.1515/JPM.2005.078
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pub_type: 杂志文章,评审
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journal_title:Journal of perinatal medicine
pub_type: 杂志文章
doi:10.1515/jpme.1994.22.2.113
更新日期:1994-01-01 00:00:00
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journal_title:Journal of perinatal medicine
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doi:10.1515/jpm-2017-0311
更新日期:2018-10-25 00:00:00
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journal_title:Journal of perinatal medicine
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更新日期:2002-01-01 00:00:00
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journal_title:Journal of perinatal medicine
pub_type: 杂志文章
doi:10.1515/jpm-2019-0344
更新日期:2020-03-26 00:00:00
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journal_title:Journal of perinatal medicine
pub_type: 杂志文章
doi:10.1515/jpme.1975.3.2.105
更新日期:1975-01-01 00:00:00
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journal_title:Journal of perinatal medicine
pub_type: 杂志文章
doi:10.1515/JPM.2002.058
更新日期:2002-01-01 00:00:00
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pub_type: 杂志文章
doi:10.1515/jpme.1989.17.5.351
更新日期:1989-01-01 00:00:00
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journal_title:Journal of perinatal medicine
pub_type: 杂志文章,评审
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更新日期:2005-01-01 00:00:00
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journal_title:Journal of perinatal medicine
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更新日期:2017-05-24 00:00:00
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journal_title:Journal of perinatal medicine
pub_type: 杂志文章
doi:10.1515/jpme.1993.21.5.349
更新日期:1993-01-01 00:00:00
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journal_title:Journal of perinatal medicine
pub_type: 杂志文章,评审
doi:10.1515/JPM.2002.071
更新日期:2002-01-01 00:00:00
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journal_title:Journal of perinatal medicine
pub_type: 杂志文章,meta分析
doi:10.1515/jpm-2016-0201
更新日期:2017-11-27 00:00:00
abstract::Prematurity still remains one of the unsolved problems in obstetrics and is responsible for a majority of cases of perinatal morbidity and mortality. The use of indomethacin to stop uterine contractions and prevent premature delivery is based on the observation that indomethacin inhibits the release of prostaglandin w...
journal_title:Journal of perinatal medicine
pub_type: 杂志文章
doi:10.1515/jpme.1984.12.1.19
更新日期:1984-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:2011-11-25 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2013-11-01 00:00:00
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journal_title:Journal of perinatal medicine
pub_type: 杂志文章,评审
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更新日期:2011-03-01 00:00:00
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pub_type: 杂志文章
doi:10.1515/JPM.2006.082
更新日期:2006-01-01 00:00:00