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Liu S, Zhou X, Jie H, Zheng Z, Cai B, Mai Q, Zhou C. Higher Cumulative Live Birth Rate but Also Higher Late Miscarriage Risk in Non-Obese Women with Polycystic Ovary Syndrome Undergoing the First IVF/ICSI Cycle. Int J Womens Health 2024; 16:289-298. [PMID: 38415060 PMCID: PMC10898478 DOI: 10.2147/ijwh.s445021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 01/22/2024] [Indexed: 02/29/2024] Open
Abstract
Purpose To determine the impact of polycystic ovary syndrome on in vitro fertilization/intracytoplasmic sperm injection and embryo transfer outcomes while analyzing the influencing factors. Patients and Methods A retrospective cohort study comprised 4839 patients who underwent their first cycle of IVF/ICSI treatment from January 2016 to December 2021. Cumulative pregnancy rates, cumulative live birth rates, and late miscarriage rates compared between the PCOS group and control group. Subgroup analysis and binary regression were used to analyze the influence of BMI on clinical outcomes among individuals diagnosed with PCOS. Results Non-obese PCOS patients exhibited higher cumulative pregnancy rates, cumulative live birth rates, and late miscarriage rates compared to the control group with the normal BMI population (84.7% vs71.2%, P < 0.001; 74.1% vs 61.6%, P < 0.001; 4.1% vs 2.0%, P = 0.002), but there was no significant difference in early miscarriage rates between the two groups. Conclusion Non-obese PCOS patients demonstrated a notably higher cumulative live birth rate but also a higher risk of late miscarriage compared to non-PCOS females with a normal BMI.
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Affiliation(s)
- Simin Liu
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, People's Republic of China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, People's Republic of China
| | - Xiu Zhou
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, People's Republic of China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, People's Republic of China
| | - Huiying Jie
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, People's Republic of China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, People's Republic of China
| | - Zetong Zheng
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, People's Republic of China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, People's Republic of China
| | - Bing Cai
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, People's Republic of China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, People's Republic of China
| | - Qingyun Mai
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, People's Republic of China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, People's Republic of China
- Guangdong Provincial Clinical Research Center for Obstetrical and Gynecological Diseases, Guangzhou, People's Republic of China
| | - Canquan Zhou
- Reproductive Medicine Center, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, People's Republic of China
- Guangdong Provincial Key Laboratory of Reproductive Medicine, Guangzhou, People's Republic of China
- Guangdong Provincial Clinical Research Center for Obstetrical and Gynecological Diseases, Guangzhou, People's Republic of China
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Yang L, Ni T, Huang Y, Yan Y, Xia M, Zhou W, Zhang Q, Yan J. Impact of a previous late miscarriage on subsequent pregnancy outcomes: A retrospective cohort study over 10 years. Int J Gynaecol Obstet 2023; 163:610-617. [PMID: 37208989 DOI: 10.1002/ijgo.14862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 04/05/2023] [Accepted: 05/04/2023] [Indexed: 05/21/2023]
Abstract
OBJECTIVE To explore the prognostic impact of a previous late miscarriage (LM) on the subsequent pregnancy outcomes of women with infertility. METHOD This retrospective cohort study included couples who had experienced LM following their first embryo transfer during an in vitro fertilization (IVF) cycle from January 2008 to December 2020. Subgroup analysis and binary logistic regression were performed to evaluate the associations between LM due to different causes and subsequent pregnancy outcomes. RESULTS A total of 1072 women who had experienced LM were included in this study, comprising 458, 146, 412, and 56 women with LM due to unexplained factors (unLM), fetal factors (feLM), cervical factors (ceLM; i.e. cervical incompetence), and trauma factors (trLM), respectively. Compared with the general IVF (gIVF) population, the early miscarriage rate was significantly higher in the unLM group (8.28% vs. 13.47%, adjusted odds ratio [OR] 1.60, 95% confidence interval [95% CI] 1.12-2.28; P = 0.01). Furthermore, women in the unLM and ceLM groups had a dramatically increased risk of recurrent LM (unLM: 4.24% vs. 9.43%, aOR 1.91, 95% CI 1.24-2.94; P = 0.003; ceLM: 4.24% vs.15.53%, aOR 2.68, 95% CI 1.82-3.95; P < 0.001) and consequently a reduced frequency of live birth (unLM: 49.96% vs. 43.01%, aOR 0.75, 95% CI 0.61-0.91; P = 0.004; ceLM: 49.96% vs. 38.59%, aOR 0.61, 95% CI 0.49-0.77; P < 0.001) compared with the gIVF population. CONCLUSION A previous LM due to an unexplained factor or cervical incompetence was significantly associated with a higher risk of miscarriage and a lower live birth rate after subsequent embryo transfer.
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Affiliation(s)
- Linlin Yang
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China
| | - Tianxiang Ni
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China
| | - Yumei Huang
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China
| | - Yueyue Yan
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China
| | - Mingdi Xia
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China
| | - Wei Zhou
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China
| | - Qian Zhang
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, Shandong, China
| | - Junhao Yan
- Center for Reproductive Medicine, Shandong University, Jinan, Shandong, China
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Doroftei B, Ilie OD, Armeanu T, Stoian IL, Anton N, Babici RG, Ilea C. A Narrative Review Discussing the Obstetric Repercussions Due to Alterations of Personalized Bacterial Sites Developed within the Vagina, Cervix, and Endometrium. J Clin Med 2023; 12:5069. [PMID: 37568471 PMCID: PMC10419759 DOI: 10.3390/jcm12155069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/19/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023] Open
Abstract
BACKGROUND The reproductive tract microbiota that evolved as an integrative component has been studied intensively in the last decade. As a result, novel research, clinical opportunities, and perspectives have been derived following the close investigation of this microecological environment. This has paved the way for an update to and improvement of the management strategies and therapeutic approaches. However, obscurities, contradictions, and controversies arise regarding the ascension route from the vagina to the endometrium via the cervix, with finality in adverse obstetric outcomes. METHODS Starting from these considerations, we aimed to gather all existing data and information from four major academic databases (PubMed, ISI Web of Knowledge, Scopus, and ScienceDirect) published in the last 13 years (2010-2023) using a controlled vocabulary and dedicated terminology to enhance the coverage, identification, and sorting of potentially eligible studies. RESULTS Despite the high number of returned entries (n = 804), only a slight percentage (2.73%) of all manuscripts were deemed eligible following two rounds of evaluation. Cumulatively, a low level of Lactobacillus spp. and of other core microbiota members is mandatory, with a possible eubiosis-to-dysbiosis transition leading to an impairment of metabolic and endocrine network homeostasis. This transposes into a change in the pro-inflammatory landscape and activation of signaling pathways due to activity exerted by the bacterial lipopolysaccharides (LPSs)/endotoxins that further reflect a high risk of miscarriage in various stages. While the presence of some pathogenic entities may be suggestive of an adverse obstetric predisposition, there are still pros and cons of the role of specific strains, as only the vagina and cervix have been targeted as opposed to the endometrium, which recently started to be viewed as the key player in the vagina-cervix-endometrium route. Consequently, based on an individual's profile, diet, and regime, antibiotics and probiotics might be practical or not. CONCLUSIONS Resident bacteria have a dual facet and are beneficial for women's health, but, at the same time, relaying on the abundance, richness, and evenness that are definitory indexes standing as intermediaries of a miscarriage.
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Affiliation(s)
- Bogdan Doroftei
- Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, University Street No. 16, 700115 Iasi, Romania
- Clinical Hospital of Obstetrics and Gynecology “Cuza Voda”, Cuza Voda Street No. 34, 700038 Iasi, Romania
- Origyn Fertility Center, Palace Street No. 3C, 700032 Iasi, Romania
| | | | - Theodora Armeanu
- Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, University Street No. 16, 700115 Iasi, Romania
- Clinical Hospital of Obstetrics and Gynecology “Cuza Voda”, Cuza Voda Street No. 34, 700038 Iasi, Romania
- Origyn Fertility Center, Palace Street No. 3C, 700032 Iasi, Romania
| | - Irina-Liviana Stoian
- Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, University Street No. 16, 700115 Iasi, Romania
| | - Nicoleta Anton
- Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, University Street No. 16, 700115 Iasi, Romania
| | - Ramona-Geanina Babici
- Department of Genetics, University of Medicine and Pharmacy “Grigore T. Popa”, University Street No. 16, 700115 Iasi, Romania
| | - Ciprian Ilea
- Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, University Street No. 16, 700115 Iasi, Romania
- Clinical Hospital of Obstetrics and Gynecology “Cuza Voda”, Cuza Voda Street No. 34, 700038 Iasi, Romania
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Yang T, Yang Y, Zhang Q, Liu D, Liu N, Li Y, Yao Z, Zhang Y, Tian F, Zhao J, Li Y. Homeostatic Model Assessment for Insulin Resistance Is Associated With Late Miscarriage in Non-Dyslipidemic Women Undergoing Fresh IVF/ICSI Embryo Transfer. Front Endocrinol (Lausanne) 2022; 13:880518. [PMID: 35784578 PMCID: PMC9247267 DOI: 10.3389/fendo.2022.880518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 05/09/2022] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE To evaluate the associations between homeostatic model assessment for insulin resistance (HOMA-IR) and pregnancy outcomes in non-dyslipidemic infertile women undergoing in vitro fertilization/intracytoplasmic sperm injection-embryo transfer (IVF/ICSI-ET). MATERIALS AND METHODS This is a retrospective study involving 3,615 non-dyslipidemic infertile women who attend to the Reproductive Medicine Center of Xiangya Hospital, Central South University (CSU) between January 2014 and October 2021. Eligible participants were divided into three groups according to the quartiles of HOMA-IR: Group 1 (HOMA-IR <1.46), Group 2 (1.46 to <2.71) and Group 3 (HOMA-IR ≥2.71). Baseline data, clinical characteristics during the assisted reproductive technology (ART) procedure, pregnancy, and neonatal outcomes were compared among the three groups. Subgroup analysis based on presence or absence of the polycystic ovary syndrome (PCOS) status was also performed to analyze the effects of HOMA-IR among non-PCOS populations. RESULTS The late miscarriage rate and percentage of macrosomia increased with the HOMA-IR group (for late miscarriage rate: 2.23% vs. 3.04% vs. 7.35%, P<0.001; for macrosomia: 0.21% vs. 1.70% vs. 3.23%, P=0.002). Increased HOMA-IR (HOMA-IR≥2.71) was positively associated with late miscarriage (crude OR 3.50, 95% CI 1.64-7.47, P=0.001; adjusted OR 3.56, 95% CI 1.56-8.15, P=0.003). In the subgroup analysis, there were 3,165 participants in the non-PCOS group and 450 were assigned to the PCOS group. Late miscarriage rate increased with the HOMA-IR group among non-PCOS populations (2.20% vs. 3.03% vs. 7.67%, P<0.001). Late miscarriage rate of PCOS women were comparable among the three HOMA-IR groups (2.50% vs. 3.06% vs. 5.71%, P=0.634). Among non-PCOS women, increased HOMA-IR (HOMA-IR≥2.71) was positively associated with late miscarriage (crude OR 3.71, 95% CI 1.66-8.30, P=0.001; adjusted OR 3.82, 95% CI 1.59-9.17, P=0.003). CONCLUSIONS Late miscarriage rate and prevalence of macrosomia increased with the HOMA-IR index. Preconception HOMA-IR is an independent risk factor for late miscarriage in normolipidemic women undergoing IVF/ICSI-ET. Controlling insulin resistance before ART might prevent the occurrence of late miscarriage and macrosomia.
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Affiliation(s)
- Tianli Yang
- Reproductive Medicine Center, Xiangya Hospital of Central South University, Changsha, China
- Clinical Research Center for Women’s Reproductive Health in Hunan Province, Changsha, China
| | - Yuanyuan Yang
- Reproductive Medicine Center, Xiangya Hospital of Central South University, Changsha, China
- Clinical Research Center for Women’s Reproductive Health in Hunan Province, Changsha, China
| | - Qiong Zhang
- Reproductive Medicine Center, Xiangya Hospital of Central South University, Changsha, China
- Clinical Research Center for Women’s Reproductive Health in Hunan Province, Changsha, China
| | - Donge Liu
- Reproductive Medicine Center, Xiangya Hospital of Central South University, Changsha, China
- Clinical Research Center for Women’s Reproductive Health in Hunan Province, Changsha, China
| | - Nenghui Liu
- Reproductive Medicine Center, Xiangya Hospital of Central South University, Changsha, China
- Clinical Research Center for Women’s Reproductive Health in Hunan Province, Changsha, China
| | - Yumei Li
- Reproductive Medicine Center, Xiangya Hospital of Central South University, Changsha, China
- Clinical Research Center for Women’s Reproductive Health in Hunan Province, Changsha, China
| | - Zhongyuan Yao
- Reproductive Medicine Center, Xiangya Hospital of Central South University, Changsha, China
- Clinical Research Center for Women’s Reproductive Health in Hunan Province, Changsha, China
| | - Yeqing Zhang
- Reproductive Medicine Center, Xiangya Hospital of Central South University, Changsha, China
- Clinical Research Center for Women’s Reproductive Health in Hunan Province, Changsha, China
| | - Fen Tian
- Reproductive Medicine Center, Xiangya Hospital of Central South University, Changsha, China
- Clinical Research Center for Women’s Reproductive Health in Hunan Province, Changsha, China
| | - Jing Zhao
- Reproductive Medicine Center, Xiangya Hospital of Central South University, Changsha, China
- Clinical Research Center for Women’s Reproductive Health in Hunan Province, Changsha, China
- *Correspondence: Yanping Li, ; Jing Zhao,
| | - Yanping Li
- Reproductive Medicine Center, Xiangya Hospital of Central South University, Changsha, China
- Clinical Research Center for Women’s Reproductive Health in Hunan Province, Changsha, China
- *Correspondence: Yanping Li, ; Jing Zhao,
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Shennan A, Chandiramani M, Bennett P, David AL, Girling J, Ridout A, Seed PT, Simpson N, Thornton S, Tydeman G, Quenby S, Carter J. MAVRIC: a multicenter randomized controlled trial of transabdominal vs transvaginal cervical cerclage. Am J Obstet Gynecol 2020; 222:261.e1-261.e9. [PMID: 31585096 DOI: 10.1016/j.ajog.2019.09.040] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 08/30/2019] [Accepted: 09/16/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND Vaginal cerclage (a suture around the cervix) commonly is placed in women with recurrent pregnancy loss. These women may experience late miscarriage or extreme preterm delivery, despite being treated with cerclage. Transabdominal cerclage has been advocated after failed cerclage, although its efficacy is unproved by randomized controlled trial. OBJECTIVE The objective of this study was to compare transabdominal cerclage or high vaginal cerclage with low vaginal cerclage in women with a history of failed cerclage. Our primary outcome was delivery at <32 completed weeks of pregnancy. STUDY DESIGN This was a multicenter randomized controlled trial. Women were assigned randomly (1:1:1) to receive transabdominal cerclage, high vaginal cerclage, or low vaginal cerclage either before conception or at <14 weeks of gestation. RESULTS The data for 111 of 139 women who were recruited and who conceived were analyzed: 39 had transabdominal cerclage; 39 had high vaginal cerclage, and 33 had low vaginal cerclage. Rates of preterm birth at <32 weeks of gestation were significantly lower in women who received transabdominal cerclage compared with low vaginal cerclage (8% [3/39] vs 33% [11/33]; relative risk, 0.23; 95% confidence interval, 0.07-0.76; P=.0157). The number needed to treat to prevent 1 preterm birth was 3.9 (95% confidence interval, 2.32-12.1). There was no difference in preterm birth rates between high and low vaginal cerclage (38% [15/39] vs 33% [11/33]; relative risk, 1.15; 95% confidence interval, 0.62-2.16; P=.81). No neonatal deaths occurred. In an exploratory analysis, women with transabdominal cerclage had fewer fetal losses compared with low vaginal cerclage (3% [1/39] vs 21% [7/33]; relative risk, 0.12; 95% confidence interval, 0.016-0.93; P=.02). The number needed to treat to prevent 1 fetal loss was 5.3 (95% confidence interval, 2.9-26). CONCLUSION Transabdominal cerclage is the treatment of choice for women with failed vaginal cerclage. It is superior to low vaginal cerclage in the reduction of risk of early preterm birth and fetal loss in women with previous failed vaginal cerclage. High vaginal cerclage does not confer this benefit. The numbers needed to treat are sufficiently low to justify transabdominal surgery and cesarean delivery required in this select cohort.
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Abstract
A study of the endometrium of women with herpetic infection has shown that early miscarriages (under 12 weeks) occurs as activation of cytotoxic natural killer (NK) cells with CD16 + phenotype and a pronounced suppression level of CD56 + cells endometrial type, and late miscarriages (13-22 weeks of gestation) occurs as cell deficit, followed by reduction of all CD8 + cytotoxic lymphocytes, and of CD56 + and CD16 + NK cells.
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Affiliation(s)
- N M Mamedalieva
- a Kazakh National Medical University , Almaty , Kazakhstan and
| | - A M Kurmanova
- b Scientific Center of Obstetric, Gynecology and Perinatology , Almaty , Kazakhstan
| | - G N Moshkalova
- a Kazakh National Medical University , Almaty , Kazakhstan and
| | - V Kim
- a Kazakh National Medical University , Almaty , Kazakhstan and
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Lamont RF, Nhan-Chang CL, Sobel JD, Workowski K, Conde-Agudelo A, Romero R. Treatment of abnormal vaginal flora in early pregnancy with clindamycin for the prevention of spontaneous preterm birth: a systematic review and metaanalysis. Am J Obstet Gynecol 2011; 205:177-90. [PMID: 22071048 PMCID: PMC3217181 DOI: 10.1016/j.ajog.2011.03.047] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Revised: 03/01/2011] [Accepted: 03/23/2011] [Indexed: 01/18/2023]
Abstract
The purpose of this study was to determine whether the administration of clindamycin to women with abnormal vaginal flora at <22 weeks of gestation reduces the risk of preterm birth and late miscarriage. We conducted a systematic review and metaanalysis of randomized controlled trials of the early administration of clindamycin to women with abnormal vaginal flora at <22 weeks of gestation. Five trials that comprised 2346 women were included. Clindamycin that was administered at <22 weeks of gestation was associated with a significantly reduced risk of preterm birth at <37 weeks of gestation and late miscarriage. There were no overall differences in the risk of preterm birth at <33 weeks of gestation, low birthweight, very low birthweight, admission to neonatal intensive care unit, stillbirth, peripartum infection, and adverse effects. Clindamycin in early pregnancy in women with abnormal vaginal flora reduces the risk of spontaneous preterm birth at <37 weeks of gestation and late miscarriage. There is evidence to justify further randomized controlled trials of clindamycin for the prevention of preterm birth. However, a deeper understanding of the vaginal microbiome, mucosal immunity, and the biology of BV will be needed to inform the design of such trials.
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Affiliation(s)
- Ronald F Lamont
- Perinatology Research Branch, NICHD, NIH, DHHS, Bethesda, MD, USA
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