Real‐time Ultrasound Observation of Fetal Activity in Labour

Wittmann, Bernd K.; Davison, B. M.; Lyons, Elliot R.; Frohlich, Jennifer; Towell, Molly E.

doi:10.1111/j.1471-0528.1979.tb11255.x

Cited by 23 publications

(13 citation statements)

References 5 publications

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“…RICHARDSON et al [8] found no fetal respiratory movements. While BOYLAN et al [2] and WHITTMANN et al [12] reported decreased fetal breathing movements in active labor. This study was undertaken to evaluate the normal pattern of fetal activity in labor.…”

Section: Discussionmentioning

confidence: 97%

“…BOYLAN et al [2] who studied 22 patients during labor, found that fetuses spend 36% of their time making breathing movements antenataly but this decreased to less than 1% during labor. WHITTMANN et al [12] who observed fetal activity by realtime ultra-sound for one hour in 25 patients in labor, found fetal respiratory movements in 13 patients, but reduced compared to the antenatal period. Fetal body and/or extremity movements were observed in all patients.…”

Section: Introductionmentioning

confidence: 97%

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Intrapartum fetal activity

Yarkoni¹,

Hobbins²

1987

Journal of Perinatal Medicine

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Fetal activity throughout pregnancy has been thoroughly studied. Relatively little informations regarding intrapartum fetal activity is available. Richardson et al. [8] found no fetal respiratory movements. While Boylan et al. [2] and Whittman et al. [12] reported decreased fetal breathing movements in active labor. This study was undertaken to evaluate the normal pattern of fetal activity in labor. Fetal movements (FM) and fetal breathing movements (FBM) were monitored by realtime ultrasound during active labor at term. The incidence of FM and FBM were measured in 18 fetuses. Results were correlated with simultaneous fetal heart rate (FHR) changes, postpartum cord blood pH and Apgar score. Recordings were made for one hour on every patient. The mean percentage incidence (PI) of FM was 19.5 per cent (range: 10.1-28.6 percent) and FBM was 8.5 per cent (range: 0-27 percent). All FM were associated with FHR accelerations, stronger movements were associated with higher FHR accelerations. No FHR accelerations were observed with FBM alone, unless accompanied by fetal movement. The lowest PI of total fetal activity (TFA, i.e. FM plus FBM) was 12.1 per cent. Movements decreased as labor progressed, while FBM remained unaltered. All newborns had cord venous blood pH of greater than 7.25 and Apgar scores of greater than or equal to 7, at five minutes. Our data suggest that in the normal uncompromised fetus, FM and FBM continue during labor at term. However, while FM tends to decrease as labor progresses. FBM tends to be constant throughout labor. This finding might indicate the autonomous nature of FBM.(ABSTRACT TRUNCATED AT 250 WORDS)

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 97%

Intrapartum fetal activity

Yarkoni¹,

Hobbins²

1987

Journal of Perinatal Medicine

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“…Fetal body movements are frequently associated with uterine contractions [6,7,10]. It is possible that the increase of the BTBV during periods of increased fetal activity as reported in some studies was actually caused by uterine contractions.…”

Section: Discussionmentioning

confidence: 99%

“…As it is known that fetal body movements frequently occur during uterine contractions [6,7], we undertook a study in order to investigate whether changes in BTBV during labor could be contributed to both these fac tors, namely uterine contractions and fetal movements, or only to one of them.…”

Section: Introductionmentioning

confidence: 99%

Fetal Heart Rate Beat-to-Beat Variability in Uncomplicated Labor

Zimmer

Divon²,

Vadasz³

1988

Gynecol Obstet Invest

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18 healthy parturients were monitored during normal labor in order to determine the influence of uterine contractions and fetal body movements on fetal heart rate beat-to-beat variability (BTBV). The BTBV was 5.37 ± 1.28 during the baseline period and a significant increase to 6.46 ± 1.64 was found during uterine contractions (p < 0.001). The BTBV during fetal movements, 6.21 ± 2.29, did not differ significantly from the value of the baseline period.

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“…The collateral applicability of ultrasound during labor has also been studied in literature. For example, assessment before epidural catheter placement, 2-8 intrapartum maternal symphyseal separation by transverse suprapubic ultrasound examination, 9 intrapartum fetal behavior and prediction of adverse perinatal outcome based on amniotic fluid amount or biophysical profile, [10][11][12][13][14][15][16][17][18][19] depiction of the molding and caput succedaneum during, but also before labor, [20][21][22][23][24][25][26] maternal 27,28 and fetal [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43] intrapartum pulsed Doppler blood flow assessment, intrapartum myometrial thickness changes, 44 ultrasound use in the third stage of labor, [45][46][47][48][49][50][51][52] or the assessment of the postvoid residual volume in laboring and postpartum women w...…”

Section: Ultrasound In Prelabormentioning

confidence: 99%

Applications of Ultrasound in Prelabor and Labor

Iliescu¹,

Antsaklis²,

Paulescu³

et al. 2012

Donald School Journal of Ultrasound in Obstetrics and Gynecology

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Ultrasound is a crucial part of everyday obstetrical practice and becomes more and more important in the management of traditionally clinical aspects of obstetrics, such as management of labor and delivery, offering a possibly more objective method of examination. The rate of labor induction has doubled in the last two decades and more objective methods are needed to assess the possible outcome of an induction and help clinicians in order to counsel women appropriately. Regarding the management of labor there is extensive evidence that clinical assessment during labor is not accurate, with potential consecutive major implications in the decision-making and the prognosis of the delivery mode. Several studies have shown that ultrasound is an objective method of assessing labor and its progress and is very helpful in decision-making for instrumental deliveries. The purpose of this article is to review the evidence available in literature regarding the benefits and the role in general of ultrasonography in prelabor and labor.

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Real‐time Ultrasound Observation of Fetal Activity in Labour

Cited by 23 publications

References 5 publications

Intrapartum fetal activity

Intrapartum fetal activity

Fetal Heart Rate Beat-to-Beat Variability in Uncomplicated Labor

Applications of Ultrasound in Prelabor and Labor

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