Can observed fetal breathing predict successful labor induction?

Teresa Grace Berg, Lawrence D. Devoe, Paula Prescott, Dee Sheehan

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Objective: To determine if a quantified incidence of fetal breathing activity, observed continuously for 1 h, can aid in the prediction of successful induction of labor at term. Methods: We enrolled gravidas scheduled to undergo indicated induction of labor (study group) and non-laboring gravidas of similar gestational age who were allowed subsequently to enter spontaneous labor (control group) for observation of fetal breathing activity before the onset of labor. Each group received 1 h of continuous ultrasound observation of fetal breathing movements, acquired and analyzed off line by a validated software program. Based on a previously published threshold of fetal breathing movement incidence (4%) associated with a spontaneous onset of labor, power analysis (β = 0.20) required a total minimum enrollment of 24 patients. Main outcome variables included length of labor, the interval to entering spontaneous or induced labor, and success of induction, as defined by entry into active phase of labor. Groups were compared with Student's t test and Chi-square test (P < 0.05, considered significant). Results: Thirty study and 18 control patients had ultrasound observations for fetal breathing movement incidence, rate, and breath interval. The mean incidence of breathing was 24% in the study group and 31% in the control group. A 4% fetal breathing movement incidence was used to divide both groups into 'breathers' (81% study, 95% control) and 'non-breathers' (19% study, 5% control). 'Breather' and 'non-breather' subgroups were similar for success of induction, length of labor, and cervical ripening. The induction and control groups were also similar for the other maternal and fetal variables analyzed. Conclusions: Prospective observation of fetal breathing movement incidence does not improve the prediction of the successful outcome of labor induction at term.

Original languageEnglish (US)
Pages (from-to)76-79
Number of pages4
JournalJournal of Maternal-Fetal Investigation
Volume7
Issue number2
StatePublished - Jun 3 1997

Fingerprint

Induced Labor
Fetal Movement
Respiration
Incidence
Labor Onset
Observation
Control Groups
Cervical Ripening
Chi-Square Distribution
Gestational Age
Software
Mothers
Students

Keywords

  • Bishop score
  • Human fetal breathing
  • Induction of labor

ASJC Scopus subject areas

  • Obstetrics and Gynecology

Cite this

Can observed fetal breathing predict successful labor induction? / Berg, Teresa Grace; Devoe, Lawrence D.; Prescott, Paula; Sheehan, Dee.

In: Journal of Maternal-Fetal Investigation, Vol. 7, No. 2, 03.06.1997, p. 76-79.

Research output: Contribution to journalArticle

Berg, TG, Devoe, LD, Prescott, P & Sheehan, D 1997, 'Can observed fetal breathing predict successful labor induction?', Journal of Maternal-Fetal Investigation, vol. 7, no. 2, pp. 76-79.
Berg, Teresa Grace ; Devoe, Lawrence D. ; Prescott, Paula ; Sheehan, Dee. / Can observed fetal breathing predict successful labor induction?. In: Journal of Maternal-Fetal Investigation. 1997 ; Vol. 7, No. 2. pp. 76-79.
@article{4029fe5e7d904ab390011209d49a907b,
title = "Can observed fetal breathing predict successful labor induction?",
abstract = "Objective: To determine if a quantified incidence of fetal breathing activity, observed continuously for 1 h, can aid in the prediction of successful induction of labor at term. Methods: We enrolled gravidas scheduled to undergo indicated induction of labor (study group) and non-laboring gravidas of similar gestational age who were allowed subsequently to enter spontaneous labor (control group) for observation of fetal breathing activity before the onset of labor. Each group received 1 h of continuous ultrasound observation of fetal breathing movements, acquired and analyzed off line by a validated software program. Based on a previously published threshold of fetal breathing movement incidence (4{\%}) associated with a spontaneous onset of labor, power analysis (β = 0.20) required a total minimum enrollment of 24 patients. Main outcome variables included length of labor, the interval to entering spontaneous or induced labor, and success of induction, as defined by entry into active phase of labor. Groups were compared with Student's t test and Chi-square test (P < 0.05, considered significant). Results: Thirty study and 18 control patients had ultrasound observations for fetal breathing movement incidence, rate, and breath interval. The mean incidence of breathing was 24{\%} in the study group and 31{\%} in the control group. A 4{\%} fetal breathing movement incidence was used to divide both groups into 'breathers' (81{\%} study, 95{\%} control) and 'non-breathers' (19{\%} study, 5{\%} control). 'Breather' and 'non-breather' subgroups were similar for success of induction, length of labor, and cervical ripening. The induction and control groups were also similar for the other maternal and fetal variables analyzed. Conclusions: Prospective observation of fetal breathing movement incidence does not improve the prediction of the successful outcome of labor induction at term.",
keywords = "Bishop score, Human fetal breathing, Induction of labor",
author = "Berg, {Teresa Grace} and Devoe, {Lawrence D.} and Paula Prescott and Dee Sheehan",
year = "1997",
month = "6",
day = "3",
language = "English (US)",
volume = "7",
pages = "76--79",
journal = "Journal of Maternal-Fetal Investigation",
issn = "0939-6322",
publisher = "Springer Verlag",
number = "2",

}

TY - JOUR

T1 - Can observed fetal breathing predict successful labor induction?

AU - Berg, Teresa Grace

AU - Devoe, Lawrence D.

AU - Prescott, Paula

AU - Sheehan, Dee

PY - 1997/6/3

Y1 - 1997/6/3

N2 - Objective: To determine if a quantified incidence of fetal breathing activity, observed continuously for 1 h, can aid in the prediction of successful induction of labor at term. Methods: We enrolled gravidas scheduled to undergo indicated induction of labor (study group) and non-laboring gravidas of similar gestational age who were allowed subsequently to enter spontaneous labor (control group) for observation of fetal breathing activity before the onset of labor. Each group received 1 h of continuous ultrasound observation of fetal breathing movements, acquired and analyzed off line by a validated software program. Based on a previously published threshold of fetal breathing movement incidence (4%) associated with a spontaneous onset of labor, power analysis (β = 0.20) required a total minimum enrollment of 24 patients. Main outcome variables included length of labor, the interval to entering spontaneous or induced labor, and success of induction, as defined by entry into active phase of labor. Groups were compared with Student's t test and Chi-square test (P < 0.05, considered significant). Results: Thirty study and 18 control patients had ultrasound observations for fetal breathing movement incidence, rate, and breath interval. The mean incidence of breathing was 24% in the study group and 31% in the control group. A 4% fetal breathing movement incidence was used to divide both groups into 'breathers' (81% study, 95% control) and 'non-breathers' (19% study, 5% control). 'Breather' and 'non-breather' subgroups were similar for success of induction, length of labor, and cervical ripening. The induction and control groups were also similar for the other maternal and fetal variables analyzed. Conclusions: Prospective observation of fetal breathing movement incidence does not improve the prediction of the successful outcome of labor induction at term.

AB - Objective: To determine if a quantified incidence of fetal breathing activity, observed continuously for 1 h, can aid in the prediction of successful induction of labor at term. Methods: We enrolled gravidas scheduled to undergo indicated induction of labor (study group) and non-laboring gravidas of similar gestational age who were allowed subsequently to enter spontaneous labor (control group) for observation of fetal breathing activity before the onset of labor. Each group received 1 h of continuous ultrasound observation of fetal breathing movements, acquired and analyzed off line by a validated software program. Based on a previously published threshold of fetal breathing movement incidence (4%) associated with a spontaneous onset of labor, power analysis (β = 0.20) required a total minimum enrollment of 24 patients. Main outcome variables included length of labor, the interval to entering spontaneous or induced labor, and success of induction, as defined by entry into active phase of labor. Groups were compared with Student's t test and Chi-square test (P < 0.05, considered significant). Results: Thirty study and 18 control patients had ultrasound observations for fetal breathing movement incidence, rate, and breath interval. The mean incidence of breathing was 24% in the study group and 31% in the control group. A 4% fetal breathing movement incidence was used to divide both groups into 'breathers' (81% study, 95% control) and 'non-breathers' (19% study, 5% control). 'Breather' and 'non-breather' subgroups were similar for success of induction, length of labor, and cervical ripening. The induction and control groups were also similar for the other maternal and fetal variables analyzed. Conclusions: Prospective observation of fetal breathing movement incidence does not improve the prediction of the successful outcome of labor induction at term.

KW - Bishop score

KW - Human fetal breathing

KW - Induction of labor

UR - http://www.scopus.com/inward/record.url?scp=0030955812&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030955812&partnerID=8YFLogxK

M3 - Article

VL - 7

SP - 76

EP - 79

JO - Journal of Maternal-Fetal Investigation

JF - Journal of Maternal-Fetal Investigation

SN - 0939-6322

IS - 2

ER -