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Birgisdottir BT, Hulthén Varli I, Saltvedt S, Lu K, Abtahi F, Åden U, Holzmann M. Short-term variation of the fetal heart rate as a marker of intraamniotic infection in pregnancies with preterm prelabor rupture of membranes: a historical cohort study. J Matern Fetal Neonatal Med 2024; 37:2345855. [PMID: 38679588 DOI: 10.1080/14767058.2024.2345855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 04/16/2024] [Indexed: 05/01/2024]
Abstract
INTRODUCTION Intraamniotic infection (IAI) and subsequent early-onset neonatal sepsis (EONS) are among the main complications associated with preterm prelabor rupture of membranes (PPROM). Currently used diagnostic tools have been shown to have poor diagnostic performance for IAI. This study aimed to investigate whether the exposure to IAI before delivery is associated with short-term variation of the fetal heart rate in pregnancies with PPROM. METHODS Observational cohort study of 678 pregnancies with PPROM, delivering between 24 + 0 and 33 + 6 gestational weeks from 2012 to 2019 in five labor units in Stockholm County, Sweden. Electronic medical records were examined to obtain background and exposure data. For the exposure IAI, we used the later diagnosis of EONS in the offspring as a proxy. EONS is strongly associated to IAI and was considered a better proxy for IAI than the histological diagnosis of acute chorioamnionitis, since acute chorioamnionitis can be observed in the absence of both positive microbiology and biochemical markers for inflammation. Cardiotocography traces were analyzed by a computerized algorithm for short-term variation of the fetal heart rate, which was the main outcome measure. RESULTS Twenty-seven pregnancies were categorized as having an IAI, based on the proxy diagnosis of EONS after birth. Fetuses exposed to IAI had significantly lower short-term variation values in the last cardiotocography trace before birth than fetuses who were not exposed (5.25 vs 6.62 ms; unadjusted difference: -1.37, p = 0.009). After adjustment for smoking and diabetes, this difference remained significant. IAI with a later positive blood culture in the neonate (n = 12) showed an even larger absolute difference in STV (-1.65; p = 0.034), with a relative decrease of 23.5%. CONCLUSION In pregnancies with PPROM, fetuses exposed to IAI with EONS as a proxy have lower short-term variation of the fetal heart rate than fetuses who are not exposed. Short-term variation might be useful as adjunct surveillance in pregnancies with PPROM.
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Affiliation(s)
- Brynhildur Tinna Birgisdottir
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
- Department of Women's Health, Division of Pregnancy and Childbirth, Karolinska University Hospital, Stockholm, Sweden
| | - Ingela Hulthén Varli
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
- Department of Women's Health, Division of Pregnancy and Childbirth, Karolinska University Hospital, Stockholm, Sweden
| | - Sissel Saltvedt
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
- Department of Women's Health, Division of Pregnancy and Childbirth, Karolinska University Hospital, Stockholm, Sweden
| | - Ke Lu
- Department of Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Farhad Abtahi
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
- Department of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden
- Division of Ergonomics, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Ulrika Åden
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
- Department of Pediatrics, Division of Neonatal Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Malin Holzmann
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
- Department of Women's Health, Division of Pregnancy and Childbirth, Karolinska University Hospital, Stockholm, Sweden
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Hwang J, Kim S, Kim H, Kim C, Kim SH, Yang M, Ahn SY, Sung SI, Chang YS. Predictive factors for perinatal bacterial transmission from colonized mothers to delivered very-low-birth-weight infants: a retrospective cohort study. Sci Rep 2024; 14:16835. [PMID: 39039134 PMCID: PMC11263601 DOI: 10.1038/s41598-024-67674-7] [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: 11/05/2023] [Accepted: 07/15/2024] [Indexed: 07/24/2024] Open
Abstract
This study investigated the predictive factors for perinatal bacterial transmission in very-low-birth-weight infants (VLBWIs) born to mothers with a history of intrapartum colonization. We retrospectively reviewed the medical records of 173 VLBWIs, wherein pathogens were confirmed in maternal cultures obtained from the blood, urine, and vagina during the intrapartum period from 2013 to 2020. Newborns were categorized based on microbiological tests, including gastric aspirates, endotracheal aspirates, blood, and skin/nasal swab cultures collected immediately after birth. Infants whose cultures matched their maternal pathogens were categorized into the "transmission group" (n = 45), while those who tested negative were assigned to the "control group" (n = 128). The predominant maternal-colonizing pathogen observed was Escherichia coli (30.6%), which also emerged as the primary colonizing pathogen in neonates (35.6%). Transmission group had higher incidences of maternal leukocytosis, chorioamnionitis, and cervical cerclage. Regarding neonatal characteristics, the transmission group demonstrated lower initial base excesses (- 6.3 ± 3.9 vs. - 9.2 ± 4.9, P < 0.05) and higher C-reactive protein levels (0.1 ± 0.3 vs. 0.4 ± 0.8, P < 0.05). Notably, regarding major neonatal outcomes, transmission group had higher mortality rates and incidences of severe intraventricular hemorrhage. These findings may be useful for making decisions when considering antibiotic treatment for infants with a history of maternal colonization.
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Affiliation(s)
- Jieun Hwang
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Sumin Kim
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
- Department of Clinical Research Design and Evaluation, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Hanna Kim
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Chan Kim
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Seung Hyun Kim
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Misun Yang
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
- Cell and Gene Therapy Institute for Future Medicine, Samsung Medical Center, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - So Yoon Ahn
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea.
- Cell and Gene Therapy Institute for Future Medicine, Samsung Medical Center, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea.
| | - Se In Sung
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
- Cell and Gene Therapy Institute for Future Medicine, Samsung Medical Center, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Yun Sil Chang
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
- Cell and Gene Therapy Institute for Future Medicine, Samsung Medical Center, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
- Department of Health Science and Technology, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
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Liang CS, Sebastian A, McKennan C, Bertoni CB, Hooven TA, Kish M, Schwabenbauer K, Yanowitz T, King BC. Clinical and economic impacts of a modified-observational screening approach to well-appearing infants born to mothers with chorioamnionitis. J Perinatol 2024; 44:1042-1049. [PMID: 38155229 DOI: 10.1038/s41372-023-01858-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 11/14/2023] [Accepted: 12/12/2023] [Indexed: 12/30/2023]
Abstract
OBJECTIVE Term infants born to mothers with chorioamnionitis are at risk for early-onset sepsis (EOS). We aimed to measure the impact of changing from a categorical to a modified-observational EOS screening approach on NICU admission, antibiotic utilization, and hospitalization costs. STUDY DESIGN Single-center retrospective pre-post cohort study of full-term infants born to mothers with chorioamnionitis. Primary outcomes included NICU admission, antibiotic utilization, and hospitalization costs. Outcomes were adjusted for demographic variables. Budget-impact analysis was performed using bootstrapping with replication. RESULTS 380 term infants were included (197 categorical; 183 modified-observational). There was a significant decrease in NICU admission and antibiotic utilization (p < 0.05) in the modified-observational cohort but no significant difference in per-patient total hospitalization costs. Budget-impact analysis suggested a high probability of cost savings. CONCLUSION A modified-observational approach to evaluating term infants of mothers with chorioamnionitis can reduce NICU admission and unnecessary antibiotic therapy, and may lead to cost-savings.
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Affiliation(s)
- Cynthia S Liang
- University of Pittsburgh, School of Medicine, Department of Pediatrics, Pittsburgh, PA, USA.
- University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA.
- UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA.
- UPMC Magee-Womens Hospital, Pittsburgh, PA, USA.
| | - Armand Sebastian
- University of Pittsburgh, School of Medicine, Department of Pediatrics, Pittsburgh, PA, USA
- University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA
- UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
- UPMC Magee-Womens Hospital, Pittsburgh, PA, USA
| | - Christopher McKennan
- University of Pittsburgh, School of Arts and Sciences, Department of Statistics, Pittsburgh, PA, USA
| | - C Briana Bertoni
- University of Pittsburgh, School of Medicine, Department of Pediatrics, Pittsburgh, PA, USA
- University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA
- UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
- UPMC Magee-Womens Hospital, Pittsburgh, PA, USA
| | - Thomas A Hooven
- University of Pittsburgh, School of Medicine, Department of Pediatrics, Pittsburgh, PA, USA
- University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA
- UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
- UPMC Magee-Womens Hospital, Pittsburgh, PA, USA
- UPMC Children's Hospital of Pittsburgh Richard King Mellon Institute for Pediatric Research, Pittsburgh, PA, USA
| | - Mary Kish
- University of Pittsburgh, School of Medicine, Department of Pediatrics, Pittsburgh, PA, USA
- University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA
- UPMC Magee-Womens Hospital, Pittsburgh, PA, USA
| | - Kathleen Schwabenbauer
- University of Pittsburgh, School of Medicine, Department of Pediatrics, Pittsburgh, PA, USA
- University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA
- UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
- UPMC Magee-Womens Hospital, Pittsburgh, PA, USA
| | - Toby Yanowitz
- University of Pittsburgh, School of Medicine, Department of Pediatrics, Pittsburgh, PA, USA
- University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA
- UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
- UPMC Magee-Womens Hospital, Pittsburgh, PA, USA
| | - Brian C King
- University of Pittsburgh, School of Medicine, Department of Pediatrics, Pittsburgh, PA, USA
- University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA
- UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
- UPMC Magee-Womens Hospital, Pittsburgh, PA, USA
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