Preterm premature rupture of membranes: Optimal timing of delivery in a community hospital

Background. Accurate timing of antenatal corticosteroids (ACS) has resulted in improved neonatal outcomes. Objectives. Our primary objective was to determine predictors for optimal timing of ACS in women presenting with spontaneous preterm labor. Study Design. A retrospective cohort study of women receiving ACS for spontaneous preterm birth was conducted. Women were included if they presented with preterm labor or preterm premature rupture of membranes. Accurate timing of ACS was defined as administration within 7 days of delivery. Maternal demographic and obstetrics characteristics were compared between the groups receiving ACS ≤7 days and >7 days from delivery. Statistical analyses were performed using parametric and nonparametric tests. P<0.05 was considered significant. Results. The study included 215 subjects. Median latency from ACS administration to delivery was 6 days (IQR 32). Accurate timing of ACS occurred in 113 (53%) women and was associated with rupture of membranes (OR 13.8, 95% CI 5.9–32.6), cervical change (OR 7.1, 95% CI 3.0–17.1), and cervical dilation ≥ 2 cm (OR 3.9, 95% CI 1.5–10.3). Conclusions. Rupture of membranes, cervical change, and cervical dilation ≥ 2 cm were strong predictors of optimal timing. 53% of women with preterm labor received ACS optimally.

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Risk Factors for Neonatal Bronchopulmonary Dysplasia in Extremely Preterm Premature Rupture of Membranes: A Retrospective Study

10.21203/rs.3.rs-35635/v1 ◽

2020 ◽

Author(s):

Eishin Nakamura ◽

Shigetaka Matsunaga ◽

Yoshihisa Ono ◽

Yasushi Takai ◽

Hiroyuki Seki

Keyword(s):

Risk Factors ◽

Risk Factor ◽

Independent Risk Factor ◽

Optimal Timing ◽

Premature Rupture Of Membranes ◽

Premature Rupture ◽

Preterm Premature Rupture ◽

Extremely Preterm ◽

Gestational Week ◽

The Mean

Abstract Background:Determination of the optimal timing for termination of pregnancy in cases of preterm premature rupture of membranes (pPROM) during the extremely preterm period is still difficult. Bronchopulmonary dysplasia (BPD) is a major disease widely taken into account when determining the prognosis of respiratory disorders in a neonate. Many aspects of this disease remain unclear. With the aim of further improving the prognosis of neonates born to mothers with pPROM, this study examined cases who were diagnosed with pPROM before 28 weeks of gestation. The study analysed risk factors for neonatal BPD and the optimal timing for termination of pregnancy in pPROM cases.Methods:Subjects were 73 cases of single pregnancy who were diagnosed with pPROM during the period from 22 weeks and 0 days to 27 weeks and 6 days of gestation. The following factors were retrospectively examined: the gestational week at which a diagnosis of pPROM was made; the gestational week at which delivery occurred; the period for which the volume of amniotic fluid was maintained; and neonatal BPD as a complication. A receiver operating characteristic (ROC) curve was drawn in order to analyse the relationship between the duration of oligohydramnios and the onset of BPD.ResultsThe mean gestational week at which a diagnosis of amniorrhexis was made was 24.5 ± 1.9 weeks (mean ± SD), and that at which delivery occurred was 27.0 ± 3.0 weeks. Fifty-seven cases (78.1%) were diagnosed with oligohydramnios, the mean duration of which was 17.4 ± 20.5 days. The mean birth weight of neonates was 1000 ± 455 g, of which 49 (67.1%) were diagnosed with BPD following birth. No neonates died in this study. Multivariate analysis of various risk factors for the onset of BPD indicated that oligohydramnios is an independent risk factor for BPD. The ROC curve indicated that the cut-off value was 4 days. In this case, the levels of sensitivity and specificity for predicting the onset of neonatal BPD were 0.941 and 0.917 respectively.ConclusionOur findings suggest that oligohydramnios is an independent risk factor for BPD in cases who are diagnosed with pPROM before 28 weeks of gestation.

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Risk Factors for Neonatal Bronchopulmonary Dysplasia in Extremely Preterm Premature Rupture of Membranes: A Retrospective Study

10.21203/rs.3.rs-35635/v2 ◽

2020 ◽

Author(s):

Eishin Nakamura ◽

Shigetaka Matsunaga ◽

Yoshihisa Ono ◽

Yasushi Takai ◽

Hiroyuki Seki

Keyword(s):

Risk Factors ◽

Risk Factor ◽

Independent Risk Factor ◽

Optimal Timing ◽

Premature Rupture Of Membranes ◽

Premature Rupture ◽

Preterm Premature Rupture ◽

Extremely Preterm ◽

Gestational Week ◽

The Mean

Abstract Background: Determination of the optimal timing for termination of pregnancy in cases of preterm premature rupture of membranes (pPROM) during the extremely preterm period is still difficult. Bronchopulmonary dysplasia (BPD) is a major disease widely taken into account when determining the prognosis of respiratory disorders in a neonate. Many aspects of this disease remain unclear. With the aim of further improving the prognosis of neonates born to mothers with pPROM, this study examined cases who were diagnosed with pPROM before 28 weeks of gestation. The study analysed risk factors for neonatal BPD and the optimal timing for termination of pregnancy in pPROM cases.Methods:Subjects were 73 cases of singleton pregnancy who were diagnosed with pPROM during the period from 22 weeks and 0 days to 27 weeks and 6 days of gestation. The following factors were retrospectively examined: the gestational week at which a diagnosis of pPROM was made; the gestational week at which delivery occurred; the period for which the volume of amniotic fluid was maintained; and neonatal BPD as a complication. A receiver operating characteristic (ROC) curve was drawn in order to analyse the relationship between the duration of oligohydramnios and the onset of BPD.Results: The mean gestational week at which a diagnosis of amniorrhexis was made was 24.5±1.9 weeks (mean±SD), and that at which delivery occurred was 27.0±3.0 weeks. Fifty-seven cases (78.1%) were diagnosed with oligohydramnios, the mean duration of which was 17.4±20.5 days. The mean birth weight of neonates was 1000±455 g, of which 49 (67.1%) were diagnosed with BPD following birth. No neonates died in this study. Multivariate analysis of various risk factors for the onset of BPD indicated that oligohydramnios is an independent risk factor for BPD. The ROC curve indicated that the cut-off value was 4 days. In this case, the levels of sensitivity and specificity for predicting the onset of neonatal BPD were 0.941 and 0.917 respectively.Conclusion: Our findings suggest that oligohydramnios is an independent risk factor for BPD in cases who are diagnosed with pPROM before 28 weeks of gestation.

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Preterm Premature Rupture of Membranes in Twins: Comparison of Rupture in the Presenting Versus Non-presenting Sac

Journal of Obstetrics and Gynaecology Canada ◽

10.1016/j.jogc.2019.06.016 ◽

2020 ◽

Vol 42 (2) ◽

pp. 163-168 ◽

Cited By ~ 1

Author(s):

Elad Mei-Dan ◽

Zoe Hutchison ◽

Mark Osmond ◽

Susan Pakenham ◽

Eugene Ng ◽

...

Keyword(s):

Premature Rupture Of Membranes ◽

Premature Rupture ◽

Preterm Premature Rupture

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Prevention and Therapy of Preterm Birth. Guideline of the DGGG, OEGGG and SGGG (S2k Level, AWMF Registry Number 015/025, February 2019) – Part 2 with Recommendations on the Tertiary Prevention of Preterm Birth and the Management of Preterm Premature Rupture of Membranes

Geburtshilfe und Frauenheilkunde ◽

10.1055/a-0903-2735 ◽

2019 ◽

Vol 79 (08) ◽

pp. 813-833 ◽

Cited By ~ 2

Author(s):

Richard Berger ◽

Harald Abele ◽

Franz Bahlmann ◽

Ivonne Bedei ◽

Klaus Doubek ◽

...

Keyword(s):

Preterm Birth ◽

German Society ◽

Consensus Conference ◽

Tertiary Prevention ◽

Short Version ◽

Premature Rupture Of Membranes ◽

Premature Rupture ◽

Preterm Premature Rupture ◽

Gynecology And Obstetrics ◽

Self Help Groups

Abstract Aims This is an official guideline of the German Society for Gynecology and Obstetrics (DGGG), the Austrian Society for Gynecology and Obstetrics (ÖGGG) and the Swiss Society for Gynecology and Obstetrics (SGGG). The aim of this guideline is to improve the prediction, prevention and management of preterm birth based on evidence obtained from recently published scientific literature, the experience of the members of the guideline commission and the views of self-help groups. Methods The members of the participating medical societies and organizations developed Recommendations and Statements based on the international literature. The Recommendations and Statements were adopted following a formal consensus process (structured consensus conference with neutral moderation, voting done in writing using the Delphi method to achieve consensus). Recommendations Part 2 of this short version of the guideline presents Statements and Recommendations on the tertiary prevention of preterm birth and the management of preterm premature rupture of membranes.

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Neonatal lymphocyte subpopulations analysis and maternal preterm premature rupture of membranes: a pilot study

Clinical Chemistry and Laboratory Medicine (CCLM) ◽

10.1515/cclm-2021-0375 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Margherita Amadi ◽

Silvia Visentin ◽

Francesca Tosato ◽

Paola Fogar ◽

Giulia Giacomini ◽

...

Keyword(s):

T Cells ◽

Immune System ◽

T Cell ◽

T Helper Cells ◽

Lymphocyte Subpopulations ◽

T Helper ◽

Premature Rupture Of Membranes ◽

Premature Rupture ◽

Preterm Premature Rupture ◽

Helper Cells

Abstract Objectives Preterm premature rupture of membranes (pPROM) causes preterm delivery, and increases maternal T-cell response against the fetus. Fetal inflammatory response prompts maturation of the newborn’s immunocompetent cells, and could be associated with unfavorable neonatal outcome. The aims were to examine the effects of pPROM (Mercer BM. Preterm premature rupture of the membranes: current approaches to evaluation and management. Obstet Gynecol Clin N Am 2005;32:411) on the newborn’s and mother’s immune system and (Test G, Levy A, Wiznitzer A, Mazor M, Holcberg G, Zlotnik A, et al. Factors affecting the latency period in patients with preterm premature rupture of membranes (pPROM). Arch Gynecol Obstet 2011;283:707–10) to assess the predictive value of immune system changes in neonatal morbidity. Methods Mother-newborn pairs (18 mothers and 23 newborns) who experienced pPROM and controls (11 mothers and 14 newborns), were enrolled. Maternal and neonatal whole blood samples underwent flow cytometry to measure lymphocyte subpopulations. Results pPROM-newborns had fewer naïve CD4 T-cells, and more memory CD4 T-cells than control newborns. The effect was the same for increasing pPROM latency times before delivery. Gestational age and birth weight influenced maturation of the newborns’ lymphocyte subpopulations and white blood cells, notably cytotoxic T-cells, regulatory T-cells, T-helper cells (absolute count), and CD4/CD8 ratio. Among morbidities, fewer naïve CD8 T-cells were found in bronchopulmonary dysplasia (BPD) (p=0.0009), and more T-helper cells in early onset sepsis (p=0.04). Conclusions pPROM prompts maturation of the newborn’s T-cell immune system secondary to antigenic stimulation, which correlates with pPROM latency. Maternal immunity to inflammatory conditions is associated with a decrease in non-major histocompatibility complex (MHC)-restricted cytotoxic cells.

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