Fetal heart rhythms during behavioural state 1F

Woerden, E.E. van; Geijn, H.P. van; Swartjes, J.M.; Caron, F.J.M.; Brons, J. T. J.; Arts, N.F.T.

doi:10.1016/0028-2243(88)90057-3

Cited by 38 publications

(16 citation statements)

References 12 publications

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“…In previous studies we demonstrated changes in the fetal heart rate during particular fetal movements, such as breathing, regular mouthing, sucking and hiccup [20,21]. The current study Figure 4.…”

Section: Discussionsupporting

confidence: 63%

Duration, amplitude and shape of accelerations in relation to fetal body movements in behavioral state 2F

Ee¹,

Hp²,

Mantel³

et al. 1991

Jpme

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The relationship between fetal movements and fetal heart rate accelerations was analyzed in 34 healthy near term fetuses. Periods of coincidence 2F (C2F) with a mean duration of 34 +/- 6 minutes per fetus were selected, with a total of 463 accelerations. Nineteen percent of single body movements and 71% of compilations of movements were accompanied by an acceleration. The minimal duration of single movements associated with accelerations was 4-5 seconds. Movements with associated accelerations differed significantly in duration from movements without accelerations. The duration of accelerations was strongly correlated with the duration of movements. The amplitude of accelerations was not clearly correlated with the duration of movements, but depended on the type of movement. The shape of accelerations appeared to be dependent on the timing of the various fetal movements. In 77%, the number of notches in the accelerations was equal to the number of pauses in the movement complications. A discrepancy between notches in accelerations and pauses in movements could be explained in the majority of cases when the timing of the various movements in relation to one another was considered, or by the presence of fetal mouth movements.

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Section: Discussionsupporting

confidence: 63%

Duration, amplitude and shape of accelerations in relation to fetal body movements in behavioral state 2F

Ee¹,

Hp²,

Mantel³

et al. 1991

Jpme

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“…In the fetus, van Woerden et al [48] observed that clusters of regular mouthing occurred during about 70% of intervals of state 1F. In the presence of regular mouthing an oscilla tory pattern could be distinguished in FHR, with the oscillation frequency coinciding with that of the mouthing clusters [49], The cycle length for the clusters varied between 10 and 28 s, and each cycle was character ized by recurrent movements of the tongue and mandible at a frequency of 1-3 Hz, fol lowed by a pause of a few seconds.…”

Section: Fetal Mouthingmentioning

confidence: 99%

“…In heart rate recordings from the fetal electrocardiogram, the bandwidth of base line variability has been found to change with fetal breathing [49,101,102], and a small rise has been found in the baseline heart rate during fetal hiccups [84], How ever, changes with fetal breathing are not detectable with the type of recordings made antepartum using an external Doppler ultra sound transducer, and episodes of fetal hic cups tend to be associated with a high per centage of signal loss [52],…”

Section: Development Of Fhr Patterns and Their Relationship To Fetal mentioning

confidence: 99%

Development of Human Fetal Behavior: A Review

Pillai¹,

James²

1990

Fetal Diagn Ther

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Most of the movements described during the course of gestation have already emerged before 16 weeks, and the presence of diurnal variation in human fetal behavior has been demonstrated from as early as 20 weeks gestation. Up to 26 weeks quiet intervals rarely exceed 5 min. After this age quiet intervals progressively increase in duration so that behavior appears cyclically rather than randomly distributed. Increasing linkage of the state variables results in identifiable fetal behavioral states from around 36 weeks. During the last trimester fetal activities are cycle- or state-dependent, so that prolonged, and often repeated, recording of behavior is necessary before any sinister conclusions can be drawn.

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“…Fetal motility has previously been evaluated in several conditions [19][20][21]. Additionally, fetal heart rate pattern variation is closely related to fetal motility [22][23][24][25][26]. The effect of (minor) maternal trauma on motility as a predictor of the functioning of the fetal CNS has not been prospectively examined yet.…”

Section: Introductionmentioning

confidence: 99%