Real-Time Microcomputer-Based Analysis of Spontaneous and Augmented Labor

Jacobson, John D.; Gregerson, G N; Dale, P S; Valenzuela, Guillermo J.

doi:10.1097/00006250-199011000-00005

Obstetrics & Gynecology

1990

DOI: 10.1097/00006250-199011000-00005

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Real-Time Microcomputer-Based Analysis of Spontaneous and Augmented Labor

John D. Jacobson

¹

,

G N Gregerson²,

P S Dale³

et al.

Abstract: In an attempt to develop a reproducible, objective measure of adequate uterine activity in labor, real-time measurements of intrauterine pressure amplitude and contraction frequency, interval, duration, and integral were made in 54 patients, 11 of whom received oxytocin augmentation. We determined the active pressure integral required per centimeter of cervical dilatation, expressed in kPa seconds, and the mean active pressure, expressed in kPa. The augmented group had a significantly higher mean active pressu… Show more

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Cited by 6 publications

(5 citation statements)

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“…The techniques are invasive and poorly predictive of labor outcome. 10,11 We have demonstrated differences in the changing rate and rhythm of contractions as labor progresses, as well as a change in these parameters in response to oxytocin in women who deliver vaginally. This response in contraction pattern, not seen in those women who subsequently require Cesarean section delivery, may potentially be useful as a non-invasive tool to predict the success of oxytocin augmentation of labor.…”

Section: Discussionmentioning

confidence: 96%

Uterine Contraction Pattern as a Predictor of the Mode of Delivery

Oppenheimer¹,

Bland²,

Dabrowski

³

et al. 2002

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Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

“…The techniques are invasive and poorly predictive of labor outcome. 10,11 We have demonstrated differences in the changing rate and rhythm of contractions as labor progresses, as well as a change in these parameters in response to oxytocin in women who deliver vaginally. This response in contraction pattern, not seen in those women who subsequently require Cesarean section delivery, may potentially be useful as a non-invasive tool to predict the success of oxytocin augmentation of labor.…”

Section: Discussionmentioning

confidence: 96%

Uterine Contraction Pattern as a Predictor of the Mode of Delivery

Oppenheimer¹,

Bland²,

Dabrowski

³

et al. 2002

Get access via publisher Add to dashboard Cite

Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

“…Taken as a group, women who progress slowly have lower paIUPs than women progressing at a normal rate 14 . However, once labours are augmented so as to bring all mean paIUPs into the same range, paIUP no longer acts as a discriminating variable in relation to cervical dilatation rate or mode of delivery 15 .…”

Section: Discussionmentioning

confidence: 99%

Head‐to‐cervix force: an important physiological variable in labour. 2. Peak active force, peak active pressure and mode of delivery

Allman

¹

,

Genevier

²

,

Johnson

³

et al. 1996

BJOG

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Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

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“…Studies have demonstrated that the use of IUPTs had no advantage when compared to noninvasive means of assessing uterine contractility during labor. [72][73][74] In addition, IUPT readings may depend on patient position, or on their location within the uterus and, most importantly, they do not correlate well with progress in cervical dilatation 70,75 or with the need for cesarean delivery. 69 Normal progress in dilatation is achieved over a broad range of uterine activity, and the pattern of contractions may be as important as their strength.…”

Section: Analytical Issuesmentioning

confidence: 99%

Perils of the new labor management guidelines

Cohen

¹

,

Friedman

²

2015

American Journal of Obstetrics and Gynecology

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Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

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