1977
DOI: 10.1016/0002-9378(77)90036-9
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Quantification of fetal heart rate variability by magnetocardiography and direct electrocardiography

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Cited by 49 publications
(25 citation statements)
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“…Furthermore the correlation between the two methods is good concerning both short term and long term variability. This agrees with one previous report [7]. In most obstetric departments the cardiotocograms are studied visually.…”
Section: Discussionsupporting
confidence: 92%
“…Furthermore the correlation between the two methods is good concerning both short term and long term variability. This agrees with one previous report [7]. In most obstetric departments the cardiotocograms are studied visually.…”
Section: Discussionsupporting
confidence: 92%
“…Only those indices which have been measured with the same rejection logic should be compared. 4.5 This study confirms an earlier observation that DI can be measured from short samples of aFECG [5], since the correlation of DIs from different periods is good. , on the other band, has a great Variation according to the arousal level of the fetus and it should be measured from longer…”
Section: In Oursupporting
confidence: 88%
“…2.5 The effect of sample time on variability indices. The period of aFECG from which FHRV analysis is calculated is called sample time [5]. The clinical studies on antepartal FHRV made by our group have been performed using a sample time of five minutes [8].…”
Section: Methodsmentioning
confidence: 99%
“…Visual evaluation of less marked changes in the fetal heart rate (FHR) variability is more problematic [5]. Statistical quantification of the FHR variability during pregnancy has succeeded previously with the aid of fetal magnetocardiography [4]. Since fetal magnetocardiography is not yet clinically applicable, this paper presents amethod for quantification of the FHR variability from abdominal fetal electrocardiography (FECG).…”
Section: Summaiymentioning
confidence: 99%
“…Quantification of less severe changes in the variability by visual inspection of the cardiotocograph tracings is problematic, even when electrocardiography is used for processing [S]. Computer methods for quantification of FHR variability from direct fetal electrocardiography (FECG) [l, 2] and fetal magnetocardiography (FMCG) [4] have been presented. These methods are based on statistical analysis of the sequential interVals measured from fetal electric or magnetic QRS complexes.…”
Section: Introductionmentioning
confidence: 99%