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Murata T, Kyozuka H, Yasuda S, Imaizumi K, Isogami H, Fukuda T, Yamaguchi A, Sato A, Ogata Y, Shinoki K, Hosoya M, Yasumura S, Hashimoto K, Fujimori K, Nishigori H. Nonreassuring fetal status during labor and offspring's childhood neurodevelopment at 3 years of age: The Japan Environment and Children's Study. Int J Gynaecol Obstet 2024; 165:244-255. [PMID: 37984054 DOI: 10.1002/ijgo.15206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 10/04/2023] [Accepted: 10/08/2023] [Indexed: 11/22/2023]
Abstract
OBJECTIVE Although prior attempts have failed to identify the beneficial effects of intensive fetal monitoring on cerebral palsy, the association between nonreassuring fetal status (NRFS) during labor and the incidence of long-term neurodevelopmental delays in offspring remains unclear. This study aimed to evaluate this association using a nationwide birth cohort. METHODS Data from 72 869 women with singleton deliveries at and after 37 weeks of gestation from the Japan Environment and Children's Study (2011-2014) were analyzed. Multivariable logistic regression models were used to analyze the odds ratios (ORs) for neurodevelopmental delays using the Ages & Stages Questionnaire (Third Edition) in offspring aged 3 years. RESULTS The adjusted ORs for personal-social problems were 1.52 (95% confidence interval [CI], 1.06-2.16) for offspring delivered vaginally by nulliparous mothers and 1.51 (95% CI, 1.05-2.18) (for males, 1.70 [95% CI, 1.15-2.50]) for those delivered via cesarean section. No significant changes in adjusted ORs for neurodevelopmental delays were observed among participants without neonatal Apgar scores (ASs) <7 and without umbilical arterial pH (UmA-pH) <7.20. CONCLUSION NRFS during labor was associated with an increased incidence of personal-social problems in offspring aged 3 years. However, this association was not confirmed after excluding participants with neonatal ASs <7 and UmA-pH <7.20. The association between NRFS and offspring's neurodevelopmental delays might vary based on delivery settings, offspring sex, and short-term neonatal outcomes.
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Affiliation(s)
- Tsuyoshi Murata
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Hyo Kyozuka
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Shun Yasuda
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Karin Imaizumi
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Hirotaka Isogami
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Toma Fukuda
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Akiko Yamaguchi
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Akiko Sato
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
| | - Yuka Ogata
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
| | - Kosei Shinoki
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
| | - Mitsuaki Hosoya
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
- Department of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Seiji Yasumura
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
- Department of Public Health, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Koichi Hashimoto
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
- Department of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Keiya Fujimori
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Hidekazu Nishigori
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
- Fukushima Medical Center for Children and Women, Fukushima Medical University, Fukushima, Japan
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Murata T, Kyozuka H, Yasuda S, Fukuda T, Tanaka T, Fujimori K. Effects of maternal ritodrine hydrochloride administration on the heart rate of preterm fetal sheep with intraamniotic inflammation. PLoS One 2022; 17:e0265872. [PMID: 35358222 PMCID: PMC8970407 DOI: 10.1371/journal.pone.0265872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 03/04/2022] [Indexed: 11/18/2022] Open
Abstract
Ritodrine hydrochloride is used for pregnancy prolongation and intrauterine fetal resuscitation. However, its clinical significance in intraamniotic inflammation during preterm labor and intrauterine fetal distress is unclear. We investigated the effects of maternal ritodrine hydrochloride administration (MRA; 200 μg/min for 2 h, followed by 800 μg/min for 2 h after 24 h) on fetal physiological parameters. For this purpose, we used chronically instrumented pregnant sheep at 113–119 d (term = 145 d) of gestation without (Group 1, n = 5) and with (Group 2, n = 5) intraamniotic inflammation induced by lipopolysaccharide injection into the amniotic cavity. The changes in fetal heart rate (FHR) and short-term variability (STV) and long-term variability (LTV) in FHR, fetal blood pressure, and fetal arterial blood gas (FABG) values were measured before and at 1 and 2 h after initiating MRA. Before MRA, all parameters were similar between Groups 1 and 2; however, there was significantly higher STV in Group 2 than in Group 1 before MRA at 800 μg/min, significantly higher partial arterial pressure of carbon dioxide in FABG in Group 2 than in Group 1 before MRA at 200 μg/min, and significantly lower blood glucose (BG) in Group 2 than in Group 1 before MRA at 800 μg/min. One hour after MRA, the FHR, STV, and LTV were significantly higher at 800 μg/min than those at the baseline in Group 1, as determined by the Friedman test; however, no significant difference was observed in Group 2. Additionally, the FABG pH significantly decreased 1 h after MRA at 800 μg/min in Group 2, whereas FABG lactate and BG significantly increased 2 h after MRA at 800 μg/min in Groups 1 and 2. Thus, short-term MRA at 800 μg/min increased the FHR, STV, and LTV significantly; these values were further modified under intraamniotic inflammation.
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Affiliation(s)
- Tsuyoshi Murata
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
- * E-mail:
| | - Hyo Kyozuka
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Shun Yasuda
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Toma Fukuda
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Teruyoshi Tanaka
- Department of Biomolecular Science, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Keiya Fujimori
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
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Murata T, Kyozuka H, Yasuda S, Fukuda T, Yamaguchi A, Maeda H, Sato A, Ogata Y, Shinoki K, Hosoya M, Yasumura S, Hashimoto K, Nishigori H, Fujimori K. Association between maternal ritodrine hydrochloride administration during pregnancy and childhood wheezing up to three years of age: The Japan environment and children's study. Pediatr Allergy Immunol 2021; 32:1455-1463. [PMID: 34013624 DOI: 10.1111/pai.13545] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 04/25/2021] [Accepted: 05/13/2021] [Indexed: 01/14/2023]
Abstract
BACKGROUND The effects of maternal ritodrine hydrochloride administration (MRA) during pregnancy on fetuses and offspring are not entirely clear. The present study aimed to evaluate the association between MRA and childhood wheezing using data from a nationwide Japanese birth cohort study. METHODS This study analyzed the data of the participants enrolled in the Japan Environment and Children's Study, a nationwide prospective birth cohort study, between 2011 and 2014. Data of women with singleton live births after 22 weeks of gestation were analyzed. The participants were divided according to MRA status. Considering childhood factors affecting the incidence of wheezing, including smoking environment and childhood viral infections, a logistic regression model was used to calculate odds ratios for "wheezing ever," diagnosis of asthma in the last 12 months, and "asthma ever" in women with MRA, with women who did not receive MRA as the reference. Additionally, participants were stratified by term births, and odds ratios for outcomes were calculated using a logistic regression model. RESULTS A total of 68,123 participants were analyzed. The adjusted odds ratio for wheezing was 1.17 (95% confidence interval, 1.12-1.22). The adjusted odds ratios for the other outcomes did not significantly increase after adjusting for childhood factors. The same tendency was confirmed after excluding women with preterm births. CONCLUSION MRA was associated with a slightly increased incidence of childhood wheezing up to three years, irrespective of term or preterm birth status. It is important that perinatal physicians consider the potential effects of MRA on the offspring's childhood health.
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Affiliation(s)
- Tsuyoshi Murata
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan.,Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Hyo Kyozuka
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan.,Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Shun Yasuda
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan.,Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Toma Fukuda
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan.,Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Akiko Yamaguchi
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan.,Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Hajime Maeda
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan.,Department of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Akiko Sato
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
| | - Yuka Ogata
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
| | - Kosei Shinoki
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan
| | - Mitsuaki Hosoya
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan.,Department of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Seiji Yasumura
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan.,Department of Public Health, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Koichi Hashimoto
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan.,Department of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Hidekazu Nishigori
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan.,Fukushima Medical Center for Children and Women, Fukushima Medical University, Fukushima, Japan
| | - Keiya Fujimori
- Fukushima Regional Center for the Japan Environment and Children's Study, Fukushima, Japan.,Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
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Murata T, Aoyagi Y, Okimura H, Ueda A. Report from "International Workshop for Junior Fellows 2: Tocolytic treatment for prevention of preterm birth" at the 73rd Annual Congress of the Japan Society of Obstetrics and Gynecology. J Obstet Gynaecol Res 2021; 47:3758-3760. [PMID: 34409669 DOI: 10.1111/jog.14951] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 07/20/2021] [Indexed: 11/28/2022]
Abstract
At the 73rd Annual Congress of the Japan Society of Obstetrics and Gynecology, we discussed recent tocolytic treatments for the prevention of preterm birth with obstetricians from Korea and Taiwan. The rate of preterm birth in our countries has been increasing, and optimal tocolytic treatments are of great concern. Ritodrine hydrochloride was the first available drug for tocolysis in our countries and is often administered for over 48 h, although it is not recommended for maintenance therapy in Western countries. Meanwhile, there are differences in the use of other tocolytic drugs, based on approval of the drugs and the health insurance systems. Nifedipine and atosiban have not been considered first-line agents in Japan. The long-term use of unnecessary tocolysis should be avoided, and the introduction of other tocolytic drugs, including nifedipine or atosiban, should be discussed.
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Affiliation(s)
- Tsuyoshi Murata
- Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Yoko Aoyagi
- Department of Obstetrics and Gynecology, Oita University, Oita, Japan
| | - Hiroyuki Okimura
- Department of Obstetrics and Gynecology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Akihiko Ueda
- Department of Gynecology and Obstetrics, Kyoto University, Kyoto, Japan
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