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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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Rotem R, Theodor E, Hirsch A, Rottenstreich M, Salem SY, Weintraub AY. The Correlation between Fetal Monitor Decelerations Area and Neonatal Cord pH among Preeclamptic parturient: an Automated Approach to a Clinical Challenge. Am J Perinatol 2024; 41:e3133-e3139. [PMID: 37871640 DOI: 10.1055/a-2196-6469] [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] [Indexed: 10/25/2023]
Abstract
OBJECTIVE To examine whether a correlation exists between electronic fetal monitoring (EFM) in the final 120 minute prior to delivery and neonatal cord blood pH among parturients with preeclampsia. STUDY DESIGN A retrospective cohort study of parturients with term and near-term preeclampsia who delivered at Soroka University Medical Center between 2013 and 2020 was conducted. EFM tracings, demographical data, and obstetrical outcomes were retrieved from the patients' electronic medical records. Using MATLAB program, area under the curve (AUC) measurements were applied. Correlation was calculated using the Spearman's correlation coefficient. RESULTS EFM of 88 parturients with preeclampsia were assessed. A significant negative correlation was demonstrated between cord blood pH and the decelerations AUC, total decelerations duration, and deceleration depth. No correlation was demonstrated between area over the curve (acceleration) and cord blood pH. In a multivariate linear regression, total deceleration AUC was found independently negatively associated with cord blood pH (beta = -0.264, p = 0.011) controlling for second stage of labor duration and induction of labor. CONCLUSION Among parturients with preeclampsia, EFM indices may assist in the diagnosis of fetal acidemia. Further studies are needed to strengthen and establish the use of electronic EFM in the management of labor and delivery. KEY POINTS · A negative correlation was demonstrated between cord blood pH and the decelerations AUC.. · Total deceleration AUC was found independently negatively associated.. · Among parturients with preeclampsia, EFM indices may assist in the diagnosis of fetal acidemia..
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Affiliation(s)
- Reut Rotem
- Department of Obstetrics and Gynecology, Shaare Zedek Medical Center, Jerusalem, Israel
| | - Ella Theodor
- Department of Obstetrics and Gynecology, Faculty of Health Sciences, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Ayala Hirsch
- Department of Obstetrics and Gynecology, Shaare Zedek Medical Center, Jerusalem, Israel
| | - Misgav Rottenstreich
- Department of Obstetrics and Gynecology, Shaare Zedek Medical Center, Jerusalem, Israel
| | - Shimrit Y Salem
- Department of Obstetrics and Gynecology, Faculty of Health Sciences, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Adi Y Weintraub
- Department of Obstetrics and Gynecology, Faculty of Health Sciences, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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Geva N, Geva Y, Katz L, Binyamin Y, Rotem R, Weintraub AY, Yaniv Salem S. Correlation between total deceleration area in CTG records and cord blood pH in pregnancies with IUGR. Arch Gynecol Obstet 2024:10.1007/s00404-023-07240-0. [PMID: 38225432 DOI: 10.1007/s00404-023-07240-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 09/14/2023] [Indexed: 01/17/2024]
Abstract
PURPOSE Fetal cardiotocography is the most common method to assess fetal well-being during labor. Nevertheless, its predictive ability for acidemia is limited, both in low-risk and high-risk pregnancies (Nelson et al. in N Engl J Med 334: 613-9, 1996; Rinciples P et al. in Health and Human Development Workshop Report on Electronic Fetal Monitoring : Update on Definitions. no. 2007, 510-515, 2008), especially in high-risk pregnancies, such as those complicated by growth restriction. In this study we aim examine the association between deceleration and acceleration areas and other measure of fetal heart rate in intrapartum fetal monitoring and neonatal arterial cord blood pH in pregnancies complicated by growth restriction. MATERIALS AND METHODS A retrospective cohort study of 100 deliveries complicated by growth restriction, delivered during 2018, was conducted. Known major fetal anomalies, non-vertex presentation and elective cesarean deliveries were excluded. Total deceleration and acceleration areas were calculated as the sum of the areas within the deceleration and acceleration, respectively. RESULTS In deliveries complicated by growth restriction, cord blood pH is significantly associated with total deceleration area (p = 0.05) and correlates with cumulative duration of the decelerations (Spearman's rank -0.363, p < 0.05), and total acceleration area (-0.358, p < 0.05). By comparing the cord blood pH in deliveries with a total deceleration area that was above and below the median total deceleration area, we demonstrated a significant difference between the categories. CONCLUSIONS Cord blood pH significantly correlates with total deceleration area and other fetal monitoring characteristics in neonates with growth restriction. Future studies using real-time, machine-learning based techniques of fetal heart rate monitoring, may provide population specific threshold values that will support bedside clinical decision making and perhaps achieve better outcomes.
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Affiliation(s)
- Neta Geva
- Department of Neonatology, Ben-Gurion University of the Negev Faculty of Health Sciences, Sheril and Hain Saban Children Hospital, Soroka Medical Center, Beer-Sheva, Israel.
| | - Yael Geva
- Department of Obstetrics and Gynecology, Faculty of Health Sciences, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Lior Katz
- Pediatric Division, Rambam Health Care Campus, Haifa, Israel
| | - Yair Binyamin
- Department of Anesthesiology, Faculty of Health Sciences, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Reut Rotem
- Division of Obstetrics and Gynecology, Shaare Zedek Medical Center, Hebrew University Medical School, Jerusalem, Israel
| | - Adi Yehuda Weintraub
- Department of Obstetrics and Gynecology, Faculty of Health Sciences, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Shimrit Yaniv Salem
- Department of Obstetrics and Gynecology, Faculty of Health Sciences, Soroka University Medical Center, Ben-Gurion University of the Negev, Beer Sheva, Israel
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Aeberhard JL, Radan AP, Delgado-Gonzalo R, Strahm KM, Sigurthorsdottir HB, Schneider S, Surbek D. Artificial intelligence and machine learning in cardiotocography: A scoping review. Eur J Obstet Gynecol Reprod Biol 2023; 281:54-62. [PMID: 36535071 DOI: 10.1016/j.ejogrb.2022.12.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 10/19/2022] [Accepted: 12/05/2022] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Artificial intelligence (AI) is gaining more interest in the field of medicine due to its capacity to learn patterns directly from data. This becomes interesting for the field of cardiotocography (CTG) interpretation, since it promises to remove existing biases and improve the well-known issues of inter- and intra-observer variability. MATERIAL AND METHODS The objective of this study was to map current knowledge in AI-assisted interpretation of CTG tracings and thus, to present different approaches with their strengths, gaps, and limitations. The search was performed on Ovid Medline and PubMed databases. The Preferred Reporting Items for Systematic Reviews and meta-Analysis for Scoping Reviews (PRISMA-ScR) guidelines were followed. RESULTS We summarized 40 different studies investigating at least one algorithm or system to classify CTG tracings. In addition, the Oxford Sonicaid system is presented because of its wide use in clinical practice. CONCLUSIONS There are several promising approaches in this area, but none of them has gained big acceptance in clinical practice. Further investigation and refinement of the algorithms and features are needed to achieve a validated decision-support system. For this purpose, larger quantities of curated and labeled data may be necessary.
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Affiliation(s)
| | - Anda-Petronela Radan
- Department of Obstetrics and Feto-maternal Medicine, University Hospital of Bern, Switzerland
| | | | - Karin Maya Strahm
- Department of Obstetrics and Feto-maternal Medicine, University Hospital of Bern, Switzerland
| | | | - Sophie Schneider
- Department of Obstetrics and Feto-maternal Medicine, University Hospital of Bern, Switzerland
| | - Daniel Surbek
- Department of Obstetrics and Feto-maternal Medicine, University Hospital of Bern, Switzerland
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Geva Y, Yaniv Salem S, Geva N, Rotem R, Talmor M, Shema N, Shany E, Weintraub AY. Intrapartum deceleration and acceleration areas are associated with neonatal encephalopathy. Int J Gynaecol Obstet 2022; 161:1061-1068. [PMID: 36572017 DOI: 10.1002/ijgo.14638] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 11/08/2022] [Accepted: 12/09/2022] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To investigate whether an association exists between deceleration and acceleration areas on continuous fetal cardiotocography (CTG) and neonatal encephalopathy (NE). METHODS A single center, retrospective case-control study was conducted to compare CTG characteristics of low-risk pregnancies (35 weeks of gestation or more), complicated by moderate to severe NE with two matched controls for every case. Controls were matched by gestational age and cord blood pH. We analyzed the intrapartum CTG recordings by calculation of the deceleration and acceleration areas and the ratio between the two. RESULTS During the period between 2013 and 2019, we identified 95 cases of low-risk pregnancies that were complicated by moderate to severe NE in our center. Thirty-three (34.7%) deliveries were excluded, mostly because of an insufficient duration of the CTG recordings. The remaining 62 cases were matched with 123 controls. We found that NE was significantly associated with an increased total deceleration area, a decreased total acceleration area, and a lower acceleration-to-deceleration ratio. CONCLUSIONS NE was significantly associated with increased total deceleration area, decreased total acceleration area, and a lower acceleration-to-deceleration ratio, independent of cord blood pH. Development of a computerized real-time analysis of fetal heart rate tracings may contribute to making these measurements a more valid clinical tool.
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Affiliation(s)
- Yael Geva
- Department of Obstetrics and Gynecology, Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Shimrit Yaniv Salem
- Department of Obstetrics and Gynecology, Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Neta Geva
- Department of Neonatology, Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.,Pediatric Division, Saban Pediatric Medical Center, Soroka University Medical Center, Beer Sheva, Israel
| | - Reut Rotem
- Division of Obstetrics and Gynecology, Shaare Zedek Medical Center, Hebrew University Medical School, Jerusalem, Israel
| | - Meital Talmor
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Noam Shema
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Eilon Shany
- Department of Neonatology, Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Adi Y Weintraub
- Department of Obstetrics and Gynecology, Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
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Ogenyi P, Chiegwu HU, England A, Akanegbu UE, Ogbonna OS, Abubakar A, Luntsi G, Zira DJ, Dauda M. Appraisal of trimester-specific fetal heart rate and its role in gestational age prediction. Radiography (Lond) 2022; 28:926-932. [PMID: 35820355 DOI: 10.1016/j.radi.2022.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 06/21/2022] [Accepted: 06/23/2022] [Indexed: 10/31/2022]
Abstract
INTRODUCTION The aim of this study was to evaluate and report normal sonographic FHR values among low-risk singleton women across the three trimesters of pregnancy and determine FHR role in gestational age prediction. METHOD A prospective cross-sectional study of 2727 low-risk singleton pregnant women was undertaken. FHR measurements were obtained by a consultant radiologist and three experienced sonographers using transabdominal approach from January 2019 to December 2020. Two FHR measurements were taken for each participant. The fetal lie and presentation were also documented in the first trimester. Data were analysed using SPSS version 24 (IBM, Armonk, NY, USA). RESULT The maternal mean ± SD age was 25.8 ± 6.5 years and mean FHR for first, second and third trimesters were 151 ± 16, 145 ± 6 and 125±6 bpm respectively. The mean ± SD gestational age were 10 ± 2, 19 ± 3 and 34 ± 2 weeks for the first, second and third trimester respectively. Using ANOVA, there were statistically significant differences in FHR across the three trimesters (p ≤ 0.05). A positive correlation existed between maternal age and FHR (r = 0.57, p ≤ 0.05). CONCLUSION This study has established normal values for FHR in first, second and third trimester respectively. Referring physicians, radiologists, sonographers, obstetricians and gynaecologists may consider FHR of (135-167) bpm (139-151) bpm and (119-131) bpm as normal FHR ranges for the first, second and third trimester respectively. This study has also revealed the possibility of gestational age prediction using FHR with the equation [Gestational Age = 87.8 - (0.47) FHR]. IMPLICATIONS FOR PRACTICE This paper provides the most up-to-date sonographic FHR recommendations for fetal management. More importantly, findings from this study also suggests that ultrasound practitioners can use FHR measurements as a reliable alternative for fetal dating.
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Affiliation(s)
- P Ogenyi
- Radiology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom.
| | - H U Chiegwu
- Department of Radiography, Nnamdi Azikiwe University, Awka
| | - A England
- School of Medicine, University College Cork, Ireland
| | - U E Akanegbu
- Department of Radiography, Nnamdi Azikiwe University, Awka
| | - O S Ogbonna
- Department of Radiography, Nnamdi Azikiwe University, Awka
| | - A Abubakar
- Department of Radiography, University of Maiduguri, Nigeria
| | - G Luntsi
- Department of Radiography, University of Maiduguri, Nigeria
| | - D J Zira
- Department of Radiography, Federal University Lafia, Nigeria
| | - M Dauda
- Department of Medical Physics, Nasarawa State University, Keffi, Nigeria
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Silva Neto MGD, Vale Madeiro JPD, Gomes DG. On designing a biosignal-based fetal state assessment system: A systematic mapping study. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2022; 216:106671. [PMID: 35144149 DOI: 10.1016/j.cmpb.2022.106671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 01/05/2022] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND AND OBJECTIVE The patterns present in biosignals, such as fetal heart rate (FHR), are valuable indicators of fetal well-being. In designing biosignal analysis systems, the variety of approaches and technology usage impairs the decision-making for the fundamental units of the systems. There is a need for an updated overview of studies encompassing the biosignal-based fetal state assessment systems. Therefore, we propose a systematic mapping study to identify and synthesize recent research regarding the building blocks that compose these systems. METHODS We followed well-established guidelines to perform a systematic mapping of studies regarding the building-blocks that compose the fetal state assessment systems and published between January 2016 and January 2021. A search string was determined based on the mapping questions and the PI (population and intervention) divisions. The search string was applied in digital libraries covering the fields of computer science, engineering, and medical informatics. Then, we applied the forward snowballing technique to complement the resulting set. This process resulted in 75 primary studies selected from a total of 871 papers. RESULTS Selected studies were classified according to the publication types, systems design stages, datasets, and predictive capabilities. The results revealed that (i) The majority of the selected studies refer to the method as a type of publication and there is a lack of validation studies; (ii) The CTU-UHB was the most frequent biosignal-based dataset and UCI-CTG was the most frequent feature-based data; (iii) The selected studies made use of the system design stages alone or in a mixed-mode. CONCLUSION The results indicated that the well-established classification models achieved competitive results compared with the state-of-the-art methods in data-constrained system designs. Moreover, we identified the need for validation studies in the clinical environment.
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Affiliation(s)
| | - João Paulo do Vale Madeiro
- Department of Engineering of Teleinformatics, Federal University of Ceará, Ceará, Fortaleza 60455-900, Brazil
| | - Danielo G Gomes
- Department of Engineering of Teleinformatics, Federal University of Ceará, Ceará, Fortaleza 60455-900, Brazil
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Gyllencreutz E, Varli IH, Lindqvist PG, Holzmann M. Variable deceleration features and intrapartum fetal acidemia - The role of deceleration area. Eur J Obstet Gynecol Reprod Biol 2021; 267:192-197. [PMID: 34826666 DOI: 10.1016/j.ejogrb.2021.11.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 11/02/2021] [Accepted: 11/05/2021] [Indexed: 10/19/2022]
Abstract
OBJECTIVE In recent years deceleration area has received increasing attention as a potential predictor of intrapartum fetal hypoxia. In several studies, the area has been manually esteemed as triangular in shape, which might introduce bias. In addition, the commonly used outcome acidemia in umbilical artery is affected by mode of delivery. We wanted to investigate the association between the variable deceleration features area, duration, depth and cumulative deceleration area (30 and 60 min) and intrapartum fetal acidemia measured as lactate concentration at fetal scalp blood sampling (FBS) in immediate connection to the decelerations. STUDY DESIGN In the source population of 1070 labors at Karolinska University Hospital, Sweden, with FBS performed on indication, we found 507 fetuses with predominantly variable decelerations as the indication for FBS. We examined the last 60- and 30-minutes of fetal monitoring preceding the FBS with focus on deceleration area, duration and depth. The contours of the decelerations were outlined manually but the area was calculated with a computer software program. We assessed area, duration and depth both as mean values per deceleration and as cumulative values during the time period of interest. We analyzed Pearson correlations and area under receiver operating characteristics curves (AUC). We also performed an adjusted analysis, with baseline frequency, variability, and accelerations as covariates. RESULTS Deceleration area and duration were the best predictors of intrapartum fetal acidemia (fetal lactate concentration >4.8 mmol/L measured with Lactate Pro™) with AUCs of 0.671 (0.682) and 0.678 (0.683) for cumulative measures during 30 (60) minutes prior to FBS, compared to deceleration depth with AUC of 0.632 (0.631). Corresponding Pearson correlations in 30-min (60-min) groups were 0.329 (0.335) and 0.358 (0.354) for deceleration area and duration and 0.212 (0.204) for deceleration depth. Using 250 beats cumulative cut-off for deceleration area during last 30 min, 71% vs. 43% were acidemic and non-acidemic, odds ratio = 3.2 (95% CI 1.7-6.1). CONCLUSIONS Deceleration area and duration were better predictors of intrapartum fetal acidemia than deceleration depth. Cumulative deceleration area >250 beats during 30 min was associated with three-fold higher odds of intrapartum acidemia compared to <250 beats.
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Affiliation(s)
- Erika Gyllencreutz
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden; Department of Obstetrics and Gynecology, Östersund Hospital, Region Jämtland Härjedalen, Sweden
| | - Ingela Hulthén Varli
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden; Medical Unit Pregnancy and Childbirth, Karolinska University Hospital, Stockholm, Sweden
| | - Pelle G Lindqvist
- Department of Clinical Sciences and Education, Sodersjukhuset, Karolinska Institutet, Stockholm, Sweden
| | - Malin Holzmann
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden; Medical Unit Pregnancy and Childbirth, Karolinska University Hospital, Stockholm, Sweden.
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Weichert J, Welp A, Scharf JL, Dracopoulos C, Becker WH, Gembicki M. The Use of Artificial Intelligence in Automation in the Fields of Gynaecology and Obstetrics - an Assessment of the State of Play. Geburtshilfe Frauenheilkd 2021; 81:1203-1216. [PMID: 34754270 PMCID: PMC8568505 DOI: 10.1055/a-1522-3029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 06/01/2021] [Indexed: 11/20/2022] Open
Abstract
The long-awaited progress in digitalisation is generating huge amounts of medical data every day, and manual analysis and targeted, patient-oriented evaluation of this data is becoming increasingly difficult or even infeasible. This state of affairs and the associated, increasingly complex requirements for individualised precision medicine underline the need for modern software solutions and algorithms across the entire healthcare system. The utilisation of state-of-the-art equipment and techniques in almost all areas of medicine over the past few years has now indeed enabled automation processes to enter - at least in part - into routine clinical practice. Such systems utilise a wide variety of artificial intelligence (AI) techniques, the majority of which have been developed to optimise medical image reconstruction, noise reduction, quality assurance, triage, segmentation, computer-aided detection and classification and, as an emerging field of research, radiogenomics. Tasks handled by AI are completed significantly faster and more precisely, clearly demonstrated by now in the annual findings of the ImageNet Large-Scale Visual Recognition Challenge (ILSVCR), first conducted in 2015, with error rates well below those of humans. This review article will discuss the potential capabilities and currently available applications of AI in gynaecological-obstetric diagnostics. The article will focus, in particular, on automated techniques in prenatal sonographic diagnostics.
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Affiliation(s)
- Jan Weichert
- Klinik für Frauenheilkunde und Geburtshilfe, Bereich Pränatalmedizin und Spezielle Geburtshilfe, Universitätsklinikum Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
- Zentrum für Pränatalmedizin an der Elbe, Hamburg, Germany
| | - Amrei Welp
- Klinik für Frauenheilkunde und Geburtshilfe, Bereich Pränatalmedizin und Spezielle Geburtshilfe, Universitätsklinikum Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
| | - Jann Lennard Scharf
- Klinik für Frauenheilkunde und Geburtshilfe, Bereich Pränatalmedizin und Spezielle Geburtshilfe, Universitätsklinikum Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
| | - Christoph Dracopoulos
- Klinik für Frauenheilkunde und Geburtshilfe, Bereich Pränatalmedizin und Spezielle Geburtshilfe, Universitätsklinikum Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
| | | | - Michael Gembicki
- Klinik für Frauenheilkunde und Geburtshilfe, Bereich Pränatalmedizin und Spezielle Geburtshilfe, Universitätsklinikum Schleswig-Holstein, Campus Lübeck, Lübeck, Germany
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Combination of XGBoost Analysis and Rule-Based Method for Intrapartum Cardiotocograph Classification. J Med Biol Eng 2021. [DOI: 10.1007/s40846-021-00642-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Lu K, Holzmann M, Abtahi F, Lindecrantz K, Lindqvist PG, Nordstrom L. Fetal heart rate short term variation during labor in relation to scalp blood lactate concentration. Acta Obstet Gynecol Scand 2018; 97:1274-1280. [PMID: 29799630 DOI: 10.1111/aogs.13390] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 05/22/2018] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Fetal heart rate short term variation (STV) decreases with severe chronic hypoxia in the antenatal period. However, only limited research has been done on STV during labor. We have tested a novel algorithm for a valid baseline estimation and calculated STV. To explore the value of STV during labor, we compared STV with fetal scalp blood (FBS) lactate concentration, an early marker in the hypoxic process. MATERIAL AND METHODS Software was developed which estimates baseline frequency using a novel algorithm and thereby calculates STV according to Dawes and Redman in up to four 30-minute blocks prior to each FBS. Cardiotocography traces from 1070 women in labor who had had FBS performed on 2134 occasions were analyzed. RESULTS In acidemic cases (lactate >4.8 mmol/L; Lactate Pro™), median STV 30 minutes prior to FBS was 7.10 milliseconds compared with 6.09 milliseconds in the preacidemic (4.2-4.8 mmol/L) and 5.23 milliseconds in the normal (<4.2 mmol/L) groups (P < .05). There was a positive correlation between lactate and STV (rho = 0.16-0.24; P < .05). Median lactate concentration in cases with STV <3.0 milliseconds (n = 160) was 2.3 mmol/L. When 2 FBS were performed within 60 minutes the change rate of lactate correlated to STV (rho = 0.33; P < .001). Cases with increasing lactate concentration had a median STV of 5.29 milliseconds vs 4.41 milliseconds in those with decreasing lactate (P < .001). CONCLUSIONS In the early stages of intrapartum hypoxia, STV increases, contrary to findings regarding chronic hypoxia in the antenatal period. The increase in the adrenergic surge is a likely explanation.
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Affiliation(s)
- Ke Lu
- School of Technology and Health, Royal Institute of Technology, Stockholm, Sweden
| | - Malin Holzmann
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.,Patient Area Pregnancy and Delivery Care, Karolinska University Hospital, Stockholm, Sweden
| | - Fahrad Abtahi
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Department of Clinical Physiology, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Kaj Lindecrantz
- School of Technology and Health, Royal Institute of Technology, Stockholm, Sweden.,Department of Clinical Science Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Pelle G Lindqvist
- Patient Area Pregnancy and Delivery Care, Karolinska University Hospital, Stockholm, Sweden.,Department of Clinical Science Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Lennart Nordstrom
- Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden.,Patient Area Pregnancy and Delivery Care, Karolinska University Hospital, Stockholm, Sweden
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