Length of latency with preterm premature rupture of membranes before 32 weeks' gestation

Alan M Peaceman*, Yinglei Lai, Dwight J. Rouse, Catherine Y. Spong, Brian M. Mercer, Michael W. Varner, John M. Thorp, Susan M. Ramin, Fergal D. Malone, Mary J. O'Sullivan, Gary D.V. Hankins

*Corresponding author for this work

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Objective The objective of the article is to describe latency for patients with preterm premature membrane rupture (PPROM) between 240/7 and 316/7 weeks' gestation.

Study Design Secondary analysis of data collected prospectively in a multicenter clinical trial of magnesium sulfate for cerebral palsy prevention. Women with PPROM and fewer than six contractions per hour at enrollment who were candidates for expectant management (n = 1,377) were included in this analysis. Length of latency was calculated in days by subtracting the time of delivery from the time of membrane rupture.

Results At each week of gestation, median latency between 24 and 28 weeks was similar at approximately 9 days, but it was significantly shorter with PPROM at 29, 30, and 31 weeks (p < 0.001). In addition, the percentage of patients remaining undelivered at 7 days and 14 days was similar for PPROM between 24 and 28 weeks, but it decreased significantly after that. For each gestational age, the proportion of patients remaining pregnant declined in a fashion similar to an exponential pattern.

Conclusion Median latency after PPROM is similar from 24 to 28 weeks' gestation, but it shortens with PPROM at and after 29 weeks.

Original languageEnglish (US)
Pages (from-to)57-62
Number of pages6
JournalAmerican journal of perinatology
Volume32
Issue number1
DOIs
StatePublished - Jan 1 2015

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Pregnancy
Magnesium Sulfate
Cerebral Palsy
Preterm Premature Rupture of the Membranes
Gestational Age
Multicenter Studies
Rupture
Clinical Trials
Membranes

Keywords

  • latency
  • premature rupture of membranes
  • preterm birth

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Obstetrics and Gynecology

Cite this

Peaceman, A. M., Lai, Y., Rouse, D. J., Spong, C. Y., Mercer, B. M., Varner, M. W., ... Hankins, G. D. V. (2015). Length of latency with preterm premature rupture of membranes before 32 weeks' gestation. American journal of perinatology, 32(1), 57-62. https://doi.org/10.1055/s-0034-1373846
Peaceman, Alan M ; Lai, Yinglei ; Rouse, Dwight J. ; Spong, Catherine Y. ; Mercer, Brian M. ; Varner, Michael W. ; Thorp, John M. ; Ramin, Susan M. ; Malone, Fergal D. ; O'Sullivan, Mary J. ; Hankins, Gary D.V. / Length of latency with preterm premature rupture of membranes before 32 weeks' gestation. In: American journal of perinatology. 2015 ; Vol. 32, No. 1. pp. 57-62.
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abstract = "Objective The objective of the article is to describe latency for patients with preterm premature membrane rupture (PPROM) between 240/7 and 316/7 weeks' gestation.Study Design Secondary analysis of data collected prospectively in a multicenter clinical trial of magnesium sulfate for cerebral palsy prevention. Women with PPROM and fewer than six contractions per hour at enrollment who were candidates for expectant management (n = 1,377) were included in this analysis. Length of latency was calculated in days by subtracting the time of delivery from the time of membrane rupture.Results At each week of gestation, median latency between 24 and 28 weeks was similar at approximately 9 days, but it was significantly shorter with PPROM at 29, 30, and 31 weeks (p < 0.001). In addition, the percentage of patients remaining undelivered at 7 days and 14 days was similar for PPROM between 24 and 28 weeks, but it decreased significantly after that. For each gestational age, the proportion of patients remaining pregnant declined in a fashion similar to an exponential pattern.Conclusion Median latency after PPROM is similar from 24 to 28 weeks' gestation, but it shortens with PPROM at and after 29 weeks.",
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Peaceman, AM, Lai, Y, Rouse, DJ, Spong, CY, Mercer, BM, Varner, MW, Thorp, JM, Ramin, SM, Malone, FD, O'Sullivan, MJ & Hankins, GDV 2015, 'Length of latency with preterm premature rupture of membranes before 32 weeks' gestation', American journal of perinatology, vol. 32, no. 1, pp. 57-62. https://doi.org/10.1055/s-0034-1373846

Length of latency with preterm premature rupture of membranes before 32 weeks' gestation. / Peaceman, Alan M; Lai, Yinglei; Rouse, Dwight J.; Spong, Catherine Y.; Mercer, Brian M.; Varner, Michael W.; Thorp, John M.; Ramin, Susan M.; Malone, Fergal D.; O'Sullivan, Mary J.; Hankins, Gary D.V.

In: American journal of perinatology, Vol. 32, No. 1, 01.01.2015, p. 57-62.

Research output: Contribution to journalArticle

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T1 - Length of latency with preterm premature rupture of membranes before 32 weeks' gestation

AU - Peaceman, Alan M

AU - Lai, Yinglei

AU - Rouse, Dwight J.

AU - Spong, Catherine Y.

AU - Mercer, Brian M.

AU - Varner, Michael W.

AU - Thorp, John M.

AU - Ramin, Susan M.

AU - Malone, Fergal D.

AU - O'Sullivan, Mary J.

AU - Hankins, Gary D.V.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - Objective The objective of the article is to describe latency for patients with preterm premature membrane rupture (PPROM) between 240/7 and 316/7 weeks' gestation.Study Design Secondary analysis of data collected prospectively in a multicenter clinical trial of magnesium sulfate for cerebral palsy prevention. Women with PPROM and fewer than six contractions per hour at enrollment who were candidates for expectant management (n = 1,377) were included in this analysis. Length of latency was calculated in days by subtracting the time of delivery from the time of membrane rupture.Results At each week of gestation, median latency between 24 and 28 weeks was similar at approximately 9 days, but it was significantly shorter with PPROM at 29, 30, and 31 weeks (p < 0.001). In addition, the percentage of patients remaining undelivered at 7 days and 14 days was similar for PPROM between 24 and 28 weeks, but it decreased significantly after that. For each gestational age, the proportion of patients remaining pregnant declined in a fashion similar to an exponential pattern.Conclusion Median latency after PPROM is similar from 24 to 28 weeks' gestation, but it shortens with PPROM at and after 29 weeks.

AB - Objective The objective of the article is to describe latency for patients with preterm premature membrane rupture (PPROM) between 240/7 and 316/7 weeks' gestation.Study Design Secondary analysis of data collected prospectively in a multicenter clinical trial of magnesium sulfate for cerebral palsy prevention. Women with PPROM and fewer than six contractions per hour at enrollment who were candidates for expectant management (n = 1,377) were included in this analysis. Length of latency was calculated in days by subtracting the time of delivery from the time of membrane rupture.Results At each week of gestation, median latency between 24 and 28 weeks was similar at approximately 9 days, but it was significantly shorter with PPROM at 29, 30, and 31 weeks (p < 0.001). In addition, the percentage of patients remaining undelivered at 7 days and 14 days was similar for PPROM between 24 and 28 weeks, but it decreased significantly after that. For each gestational age, the proportion of patients remaining pregnant declined in a fashion similar to an exponential pattern.Conclusion Median latency after PPROM is similar from 24 to 28 weeks' gestation, but it shortens with PPROM at and after 29 weeks.

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