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Mappa I, Masturzo B, Carbone IF, Kiener A, Maruotti GM, Pintucci A, Suprani A, Visentin S, Ghi T, Rizzo G. A national survey on current practice of ultrasound in labor ward. J Perinat Med 2024; 52:509-514. [PMID: 38651816 DOI: 10.1515/jpm-2024-0057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 03/10/2024] [Indexed: 04/25/2024]
Abstract
OBJECTIVES Use of ultrasonography has been suggested as an accurate adjunct to clinical evaluation of fetal position and station during labor. There are no available reports concerning its actual use in delivery wards. The aim of this survey was to evaluate the current practice regarding the use of ultrasonography during labor. METHODS A questionnaire was sent to members of the Italian Society of Ultrasound in Obstetrics and Gynecology employed in delivery wards. The qFeuestionnaire was made up of 22 questions evaluating participant characteristics and the current use of ultrasound in labor in their hospital of employment. The answers were grouped according to participant characteristics. RESULTS A total of 200 participants replied. Ultrasound was considered useful before an operative vaginal delivery by 59.6 % of respondents, while 51.8 and 52.5 % considered it useful in the management of prolonged first and second stages of labor, respectively. The major indication for ultrasound use during labor was the assessment of fetal occiput position. The major difficulties in its application were the perceived lack of training and the complexity of the ultrasound equipment use. Participants that reported fewer difficulties were those employed in hospitals with a higher number of deliveries or having delivery units with more years of experience using ultrasound in labor, or those who had attended specific training courses. CONCLUSIONS The results indicate that, despite the reported evidence of a higher accuracy of ultrasound compared to clinical evaluation in assessing fetal position and station, its use is still limited, even amongst maternal-fetal medicine practitioners specialized in ultrasonography.
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Affiliation(s)
- Ilenia Mappa
- Department of Obstetrics and Gynecology, 9318 Fondazione Policlinico di Tor Vergata, University of Rome Tor Vergata , Rome, Italy
| | - Bianca Masturzo
- Department of Obstetrics and Gynecology, Ospedale di Biella, Biella, Italy
| | - Ilma Floriana Carbone
- Unit of Obstetrics, Department of Woman, Child and Neonate, 9339 Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico , Milan, Italy
| | - Ariane Kiener
- Department of Medicine and Surgery, Obstetrics and Gynecology Unit, 9370 University of Parma , Parma, Italy
| | | | - Armando Pintucci
- Department of Obstetrics and Gynaecology, ASST di Monza, Desio, Italy
| | - Alice Suprani
- Department of Women's and Children's Health, Forlì-Cesena, Cesena, Italy
| | - Silvia Visentin
- Department of Women's and Children's Health, 9308 University of Padua , Padova, Italy
| | - Tullio Ghi
- Department of Medicine and Surgery, Obstetrics and Gynecology Unit, 9370 University of Parma , Parma, Italy
| | - Giuseppe Rizzo
- Department of Obstetrics and Gynecology, 9318 Fondazione Policlinico di Tor Vergata, University of Rome Tor Vergata , Rome, Italy
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Novillo-Del Álamo B, Martínez-Varea A, Satorres-Pérez E, Nieto-Tous M, Modrego-Pardo F, Padilla-Prieto C, García-Florenciano MV, Bello-Martínez de Velasco S, Morales-Roselló J. Prediction of Failure to Progress after Labor Induction: A Multivariable Model Using Pelvic Ultrasound and Clinical Data. J Pers Med 2024; 14:502. [PMID: 38793084 PMCID: PMC11122556 DOI: 10.3390/jpm14050502] [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: 04/02/2024] [Revised: 04/27/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
Objective: Labor induction is one of the leading causes of obstetric admission. This study aimed to create a simple model for predicting failure to progress after labor induction using pelvic ultrasound and clinical data. Material and Methods: A group of 387 singleton pregnant women at term with unruptured amniotic membranes admitted for labor induction were included in an observational prospective study. Clinical and ultrasonographic variables were collected at admission prior to the onset of contractions, and labor data were collected after delivery. Multivariable logistic regression analysis was applied to create several models to predict cesarean section due to failure to progress. Afterward, the most accurate and reproducible model was selected according to the lowest Akaike Information Criteria (AIC) with a high area under the curve (AUC). Results: Plausible parameters for explaining failure to progress were initially obtained from univariable analysis. With them, several multivariable analyses were evaluated. Those parameters with the highest reproducibility included maternal age (p < 0.05), parity (p < 0.0001), fetal gender (p < 0.05), EFW centile (p < 0.01), cervical length (p < 0.01), and posterior occiput position (p < 0.001), but the angle of descent was disregarded. This model obtained an AIC of 318.3 and an AUC of 0.81 (95% CI 0.76-0.86, p < 0.0001) with detection rates of 24% and 37% for FPRs of 5% and 10%. Conclusions: A simplified clinical and sonographic model may guide the management of pregnancies undergoing labor induction, favoring individualized patient management.
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Affiliation(s)
- Blanca Novillo-Del Álamo
- Department of Obstetrics and Gynecology, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (B.N.-D.Á.); (E.S.-P.); (M.N.-T.); (F.M.-P.); (C.P.-P.); (M.V.G.-F.); (S.B.-M.d.V.); (J.M.-R.)
| | - Alicia Martínez-Varea
- Department of Obstetrics and Gynecology, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (B.N.-D.Á.); (E.S.-P.); (M.N.-T.); (F.M.-P.); (C.P.-P.); (M.V.G.-F.); (S.B.-M.d.V.); (J.M.-R.)
- Department of Pediatrics, Obstetrics and Gynecology, Faculty of Medicine, University of Valencia, 46010 Valencia, Spain
- Department of Medicine, CEU Cardenal Herrera University, 12006 Castellón de la Plana, Spain
- Faculty of Health Sciences, Universidad Internacional de Valencia, 46002 Valencia, Spain
| | - Elena Satorres-Pérez
- Department of Obstetrics and Gynecology, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (B.N.-D.Á.); (E.S.-P.); (M.N.-T.); (F.M.-P.); (C.P.-P.); (M.V.G.-F.); (S.B.-M.d.V.); (J.M.-R.)
| | - Mar Nieto-Tous
- Department of Obstetrics and Gynecology, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (B.N.-D.Á.); (E.S.-P.); (M.N.-T.); (F.M.-P.); (C.P.-P.); (M.V.G.-F.); (S.B.-M.d.V.); (J.M.-R.)
| | - Fernando Modrego-Pardo
- Department of Obstetrics and Gynecology, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (B.N.-D.Á.); (E.S.-P.); (M.N.-T.); (F.M.-P.); (C.P.-P.); (M.V.G.-F.); (S.B.-M.d.V.); (J.M.-R.)
| | - Carmen Padilla-Prieto
- Department of Obstetrics and Gynecology, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (B.N.-D.Á.); (E.S.-P.); (M.N.-T.); (F.M.-P.); (C.P.-P.); (M.V.G.-F.); (S.B.-M.d.V.); (J.M.-R.)
| | - María Victoria García-Florenciano
- Department of Obstetrics and Gynecology, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (B.N.-D.Á.); (E.S.-P.); (M.N.-T.); (F.M.-P.); (C.P.-P.); (M.V.G.-F.); (S.B.-M.d.V.); (J.M.-R.)
| | - Silvia Bello-Martínez de Velasco
- Department of Obstetrics and Gynecology, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (B.N.-D.Á.); (E.S.-P.); (M.N.-T.); (F.M.-P.); (C.P.-P.); (M.V.G.-F.); (S.B.-M.d.V.); (J.M.-R.)
| | - José Morales-Roselló
- Department of Obstetrics and Gynecology, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (B.N.-D.Á.); (E.S.-P.); (M.N.-T.); (F.M.-P.); (C.P.-P.); (M.V.G.-F.); (S.B.-M.d.V.); (J.M.-R.)
- Department of Pediatrics, Obstetrics and Gynecology, Faculty of Medicine, University of Valencia, 46010 Valencia, Spain
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Eggebø TM, Hjartardottir H. Descent of the presenting part assessed with ultrasound. Am J Obstet Gynecol 2024; 230:S901-S912. [PMID: 34461079 DOI: 10.1016/j.ajog.2021.08.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 08/15/2021] [Accepted: 08/19/2021] [Indexed: 11/29/2022]
Abstract
Fetal head descent can be expressed as fetal station and engagement. Station is traditionally based on clinical vaginal examination of the distal part of the fetal skull and related to the level of the ischial spines. Engagement is based on a transabdominal examination of the proximal part of the fetal head above the pelvic inlet. Clinical examinations are subjective, and objective measurements of descent are warranted. Ultrasound is a feasible diagnostic tool in labor, and fetal lie, station, position, presentation, and attitude can be examined. This review presents an overview of fetal descent examined with ultrasound. Ultrasound was first introduced for examining fetal descent in 1977. The distance from the sacral tip to the fetal skull was measured with A-mode ultrasound, but more convenient transperineal methods have since been published. Of those, progression distance, angle of progression, and head-symphysis distance are examined in the sagittal plane, using the inferior part of the symphysis pubis as reference point. Head-perineum distance is measured in the frontal plane (transverse transperineal scan) as the shortest distance from perineum to the fetal skull, representing the remaining part of the birth canal for the fetus to pass. At high stations, the fetal head is directed downward, followed with a horizontal and then an upward direction when the fetus descends in the birth canal and deflexes the head. Head descent may be assessed transabdominally with ultrasound and measured as the suprapubic descent angle. Many observational studies have shown that fetal descent assessed with ultrasound can predict labor outcome before induction of labor, as an admission test, and during the first and second stage of labor. Labor progress can also be examined longitudinally. The International Society of Ultrasound in Obstetrics and Gynecology recommends using ultrasound in women with prolonged or arrested first or second stage of labor, when malpositions or malpresentations are suspected, and before an operative vaginal delivery. One single ultrasound parameter cannot tell for sure whether an instrumental delivery is going to be successful. Information about station and position is a prerequisite, but head direction, presentation, and attitude also should be considered.
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Affiliation(s)
- Torbjørn M Eggebø
- National Center for Fetal Medicine, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway; Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway; Department of Obstetrics and Gynecology, Helse Stavanger, Stavanger University Hospital, Stavanger, Norway.
| | - Hulda Hjartardottir
- Department of Obstetrics and Gynecology, Landspitali University Hospital, Reykjavík, Iceland; Faculty of Medicine, University of Iceland, Reykjavík, Iceland
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Malvasi A, Damiani GR, DI Naro E, Vitagliano A, Dellino M, Achiron R, Ioannis K, Vimercati A, Gaetani M, Cicinelli E, Vinciguerra M, Ricci I, Tinelli A, Baldini GM, Silvestris E, Trojano G. Intrapartum ultrasound and mother acceptance: A study with informed consent and questionnaire. Eur J Obstet Gynecol Reprod Biol X 2023; 20:100246. [PMID: 37876768 PMCID: PMC10590726 DOI: 10.1016/j.eurox.2023.100246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 10/11/2023] [Indexed: 10/26/2023] Open
Abstract
Introduction Intrapartum ultrasound (IU) is used in the delivery ward; even if IU monitors the labouring women, it could be perceived as a discomfort and even as an" obstetric violence", because it is a young technique, not often well "accepted". A group of clinicians aimed at obtain an informed consent from patients, prior to perform a translabial ultrasound (TU). The aim of this study was to evaluate the acceptance of both translabial and transabdominal IU. Methods In this study, performed at the University Hospital of Bari (Unit of Obstetrics and Gynecology), were enrolled 103 patients in the first or second stage of labor in singleton cephalic presentation. A statistical frequency and an association analysis were performed. As a significant result, we consider the peace of mind/satisfaction and the" obstetric violence". IU was performed both transabdominal and translabial to determine the presentation, head positions, angle of progression and head perineum distance. During the first and second stage of labor, the ASIUG questionnaires (Apulia study intrapartum ultrasonography group) were administered. Results 74 (71, 84%) patients underwent IU and 29 had a vaginal examination (28, 15%). Significant less "violence" has been experienced with a IU (73 out 74/98, 65%) and only one person (1 /1, 35%) recorded that. On the contrary, 10 patients (10/29) perceived that "violence" (34, 48%) while 19 (65, 52%) did not respond on a similar way, after a vaginal examination (VE). More patients felt satisfaction (71 out 74/95, 95%) with the use of IU and only 3 (3/4, 05%) felt unease. A different picture was evident in the vaginal examination group. Only 17 patients (17 out 29/58, 62%) felt comfort while 12 (41, 38%) felt unease. Conclusions In our study, IU use is well accepted by most of patients, because it could reassure women about their fetal condition. Moreover, they can see the fetus on the screen, while the obstetrician is performing the US and this is important for a visual feedback, in comparison with the classical VE.
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Affiliation(s)
- Antonio Malvasi
- Department of Biomedical and Human Oncological Science (DIMO), 1st Unit of Obstetrics and Gynecology, School of Medicine, University of Bari Aldo Moro, 70124 Bari, Italy
- Laboratory of Human Physiology, Phystech BioMed School, Faculty of Biological & Medical Physics, Moscow Institute of Physics and Technology (State University), 141701 Moscow, Russia
| | - Gianluca Raffaello Damiani
- Department of Biomedical and Human Oncological Science (DIMO), 1st Unit of Obstetrics and Gynecology, School of Medicine, University of Bari Aldo Moro, 70124 Bari, Italy
| | - Edoardo DI Naro
- Department of Biomedical and Human Oncological Science (DIMO), 1st Unit of Obstetrics and Gynecology, School of Medicine, University of Bari Aldo Moro, 70124 Bari, Italy
| | - Amerigo Vitagliano
- Department of Biomedical and Human Oncological Science (DIMO), 1st Unit of Obstetrics and Gynecology, School of Medicine, University of Bari Aldo Moro, 70124 Bari, Italy
| | - Miriam Dellino
- Department of Biomedical and Human Oncological Science (DIMO), 1st Unit of Obstetrics and Gynecology, School of Medicine, University of Bari Aldo Moro, 70124 Bari, Italy
| | - Reuven Achiron
- Prenatal Diagnostic Unit, Department of Obstetrics and Gynecology, Sheba Medical Center, Tel Hashomer, Israel
| | - Kosmas Ioannis
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Antonella Vimercati
- Department of Biomedical and Human Oncological Science (DIMO), 1st Unit of Obstetrics and Gynecology, School of Medicine, University of Bari Aldo Moro, 70124 Bari, Italy
| | - Maria Gaetani
- Department of Biomedical and Human Oncological Science (DIMO), 1st Unit of Obstetrics and Gynecology, School of Medicine, University of Bari Aldo Moro, 70124 Bari, Italy
| | - Ettore Cicinelli
- Department of Biomedical and Human Oncological Science (DIMO), 1st Unit of Obstetrics and Gynecology, School of Medicine, University of Bari Aldo Moro, 70124 Bari, Italy
| | - Marina Vinciguerra
- Department of Biomedical and Human Oncological Science (DIMO), 1st Unit of Obstetrics and Gynecology, School of Medicine, University of Bari Aldo Moro, 70124 Bari, Italy
| | - Ilaria Ricci
- Department of Biomedical and Human Oncological Science (DIMO), 1st Unit of Obstetrics and Gynecology, School of Medicine, University of Bari Aldo Moro, 70124 Bari, Italy
| | - Andrea Tinelli
- Laboratory of Human Physiology, Phystech BioMed School, Faculty of Biological & Medical Physics, Moscow Institute of Physics and Technology (State University), 141701 Moscow, Russia
- Department of Obstetrics and Gynecology, "Veris delli Ponti" Hospital, Scorrano, 73020 Lecce, Italy
- Division of Experimental Endoscopic Surgery, Imaging, Technology and Minimally Invasive Therapy, Vito Fazzi Hospital, 73100 Lecce, Italy
| | | | - Erica Silvestris
- Gynecologic Oncology Unit, IRCCS Istituto Tumori "Giovanni Paolo II", 70124 Bari, Italy
| | - Giuseppe Trojano
- Department of Maternal and Child Gynecologic Oncology Unit, IRCCS Istituto Tumori "Giovanni Paolo II", 70124 Bari, ItalyHealth, "Madonna delle Grazie" Hospital ASM, 75100 Matera, Italy
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Boulmedais M, Monperrus M, Corbel E, Blanc-Petitjean P, Lassel L, Béranger R, Timoh KN, Enderle I, Le Lous M. Predictive value of head-perineum distance measured at the initiation of the active second stage of labor on the mode of delivery: A prospective cohort study. Eur J Obstet Gynecol Reprod Biol 2023; 280:132-137. [PMID: 36463788 DOI: 10.1016/j.ejogrb.2022.11.020] [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: 09/23/2022] [Revised: 11/17/2022] [Accepted: 11/21/2022] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The objective was to assess the predictive value of head-perineum distance measured at the initiation of the active second stage of labor on the mode of delivery. MATERIAL AND METHODS It was a prospective cohort study in an academic Hospital of Rennes, France, from July 1, 2020 to April 4, 2021 including 286 full-term parturients who gave birth to a newborn in cephalic presentation. A double-blind ultrasound measurement of the head-perineum distance was performed during the second phase of labor within five minutes after the onset of pushing efforts. The primary outcome was the mode of delivery (spontaneous vaginal delivery versus instrumental vaginal delivery or cesarean section). We performed a multivariate analysis to determine the predictive value of the head-perineum distance by adjusting on potential confounders. RESULTS Overall, 199 patients delivered by spontaneous vaginal delivery, 80 by instrumental vaginal delivery, and seven by cesarean section. The head-perineum distance measured at the beginning of pushing efforts was predictive of the mode of delivery with a threshold at 44 mm (crude: sensitivity = 56.8 % and specificity = 79.3 %; adjusted: sensitivity = 79.4 % and specificity = 87.4 %). The risk of medical intervention was higher when the head-perineum distance is>44 mm with an adjusted OR of 2.78 [1.38; 5.76]. CONCLUSION The head-perineum distance measured at the initiation of the active second stage of labor is predictive of the mode of delivery. Head-perineum distance below 44 mm predicts a vaginal delivery with the best diagnostic performance, and optimizes the time to start pushing efforts.
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Affiliation(s)
- Myriam Boulmedais
- Department of Obstetrics and Gynecology, University Hospital of Rennes, France
| | - Marion Monperrus
- Department of Obstetrics and Gynecology, University Hospital of Rennes, France; Univ Rennes, CHU Rennes, Inserm, EHESP, Irset (Institut de Recherche en Sante, Environnement et Travail) - UMR_S 1085, F-35000 Rennes, France
| | - Elise Corbel
- Department of Obstetrics and Gynecology, University Hospital of Rennes, France
| | | | - Linda Lassel
- Department of Obstetrics and Gynecology, University Hospital of Rennes, France
| | - Rémi Béranger
- Department of Obstetrics and Gynecology, University Hospital of Rennes, France; Univ Rennes, CHU Rennes, Inserm, EHESP, Irset (Institut de Recherche en Sante, Environnement et Travail) - UMR_S 1085, F-35000 Rennes, France
| | - Krystel Nyangoh Timoh
- Department of Obstetrics and Gynecology, University Hospital of Rennes, France; University of Rennes 1, INSERM, LTSI - UMR 1099, F35000 Rennes, France
| | - Isabelle Enderle
- Department of Obstetrics and Gynecology, University Hospital of Rennes, France; Univ Rennes, CHU Rennes, Inserm, EHESP, Irset (Institut de Recherche en Sante, Environnement et Travail) - UMR_S 1085, F-35000 Rennes, France
| | - Maela Le Lous
- Department of Obstetrics and Gynecology, University Hospital of Rennes, France; University of Rennes 1, INSERM, LTSI - UMR 1099, F35000 Rennes, France.
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Rizzo G, Ghi T, Henrich W, Tutschek B, Kamel R, Lees CC, Mappa I, Kovalenko M, Lau W, Eggebo T, Achiron R, Sen C. Ultrasound in labor: clinical practice guideline and recommendation by the WAPM-World Association of Perinatal Medicine and the PMF-Perinatal Medicine Foundation. J Perinat Med 2022; 50:1007-1029. [PMID: 35618672 DOI: 10.1515/jpm-2022-0160] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 12/27/2022]
Abstract
This recommendation document follows the mission of the World Association of Perinatal Medicine in collaboration with the Perinatal Medicine Foundation. We aim to bring together groups and individuals throughout the world for standardization to implement the ultrasound evaluation in labor ward and improve the clinical management of labor. Ultrasound in labor can be performed using a transabdominal or a transperineal approach depending upon which parameters are being assessed. During transabdominal imaging, fetal anatomy, presentation, liquor volume, and placental localization can be determined. The transperineal images depict images of the fetal head in which calculations to determine a proposed fetal head station can be made.
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Affiliation(s)
- Giuseppe Rizzo
- Department of Obstetrics and Gynecology, Università di Roma Tor Vergata, Fondazione Policlinico Tor Vergata, Rome, Italy
| | - Tullio Ghi
- Department of Medicine and Surgery, University of Parma, Parma, Italy
- UOC Ostetricia e Ginecologia Azienda Ospedaliera Universitaria di Parma, Parma, Italy
- Della Scuola di Specializzazione in Ostetricia e Ginecologia Presidente del CdS Ostetricia, Parma, Italy
| | - Wolfgang Henrich
- Department of Obstetrics, University Medical Center Berlin, Charité, Berlin, Germany
| | - Boris Tutschek
- Specialist in Gynecology and Obstetrics FMH, Focus Obstetrics and Feto-Maternal Medicine, Zurich, Switzerland
| | - Rasha Kamel
- Department of Obstetrics and Gynecology Maternal-Fetal medicine unit, Cairo University, Cairo, Egypt
| | - Christoph C Lees
- Imperial College London and Head of Fetal Medicine, Imperial College Healthcare NHS Trust, London, UK
- Department of Development & Regeneration, KU Leuven, Leuven, Belgium
| | - Ilenia Mappa
- Università di Roma Tor Vergata, Unità Operativa di Medicina Materno Fetale Ospedale Cristo Re Roma, Rome, Italy
| | | | - Wailam Lau
- Department of O&G, Kwong Wah Hospital, Hong Kong SAR, China
| | - Torbjorn Eggebo
- National center for fetal medicine, St.Olavs Hospital, Trondheim, Norway
| | - Reuven Achiron
- Department of Obstetrics and Gynecology, Ultrasound unit, Tel-Hashomer, Sackler School of Medicine, Tel-Aviv University, Ramat-Gan, Israel
| | - Cihat Sen
- Perinatal Medicine Foundation, Istanbul, Turkey
- Department of Perinatal Medicine, Memorial BAH Hospital, Istanbul, Turkey
- Department of Perinatal Medicine, Obstetrics and Gynecology, Istanbul University-Cerrahpasa, Istanbul, Turkey
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Moncrieff G, Gyte GM, Dahlen HG, Thomson G, Singata-Madliki M, Clegg A, Downe S. Routine vaginal examinations compared to other methods for assessing progress of labour to improve outcomes for women and babies at term. Cochrane Database Syst Rev 2022; 3:CD010088. [PMID: 35244935 PMCID: PMC8896079 DOI: 10.1002/14651858.cd010088.pub3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Routine vaginal examinations are undertaken at regular time intervals during labour to assess whether labour is progressing as expected. Unusually slow progress can be due to underlying problems, described as labour dystocia, or can be a normal variation of progress. Evidence suggests that if mother and baby are well, length of labour alone should not be used to decide whether labour is progressing normally. Other methods to assess labour progress include intrapartum ultrasound and monitoring external physical and behavioural cues. Vaginal examinations can be distressing for women, and overdiagnosis of dystocia can result in iatrogenic morbidity due to unnecessary intervention. It is important to establish whether routine vaginal examinations are effective, both as an accurate measure of physiological labour progress and to distinguish true labour dystocia, or whether other methods for assessing labour progress are more effective. This Cochrane Review is an update of a review first published in 2013. OBJECTIVES To compare the effectiveness, acceptability, and consequences of routine vaginal examinations compared with other methods, or different timings, to assess labour progress at term. SEARCH METHODS For this update, we searched Cochrane Pregnancy and Childbirth Trials Register (which includes trials from CENTRAL, MEDLINE, Embase, CINAHL, and conference proceedings) and ClinicalTrials.gov (28 February 2021). We also searched the reference lists of retrieved studies. SELECTION CRITERIA We included randomised controlled trials (RCTs) of vaginal examinations compared with other methods of assessing labour progress and studies assessing different timings of vaginal examinations. Quasi-RCTs and cluster-RCTs were eligible for inclusion. We excluded cross-over trials and conference abstracts. DATA COLLECTION AND ANALYSIS Two review authors independently assessed all studies identified by the search for inclusion in the review. Four review authors independently extracted data. Two review authors assessed risk of bias and certainty of the evidence using GRADE. MAIN RESULTS We included four studies that randomised a total of 755 women, with data analysed for 744 women and their babies. Interventions used to assess labour progress were routine vaginal examinations, routine ultrasound assessments, routine rectal examinations, routine vaginal examinations at different frequencies, and vaginal examinations as indicated. We were unable to conduct meta-analysis as there was only one study for each comparison. All studies were at high risk of performance bias due to difficulties with blinding. We assessed two studies as high risk of bias and two as low or unclear risk of bias for other domains. The overall certainty of the evidence assessed using GRADE was low or very low. Routine vaginal examinations versus routine ultrasound to assess labour progress (one study, 83 women and babies) Study in Turkey involving multiparous women with spontaneous onset of labour. Routine vaginal examinations may result in a slight increase in pain compared to routine ultrasound (mean difference -1.29, 95% confidence interval (CI) -2.10 to -0.48; one study, 83 women, low certainty evidence) (pain measured using a visual analogue scale (VAS) in reverse: zero indicating 'worst pain', 10 indicating no pain). The study did not assess our other primary outcomes: positive birth experience; augmentation of labour; spontaneous vaginal birth; chorioamnionitis; neonatal infection; admission to neonatal intensive care unit (NICU). Routine vaginal examinations versus routine rectal examinations to assess labour progress (one study, 307 women and babies) Study in Ireland involving women in labour at term. We assessed the certainty of the evidence as very low. Compared with routine rectal examinations, routine vaginal examinations may have little or no effect on: augmentation of labour (risk ratio (RR) 1.03, 95% CI 0.63 to 1.68; one study, 307 women); and spontaneous vaginal birth (RR 0.98, 95% CI 0.90 to 1.06; one study, 307 women). We found insufficient data to fully assess: neonatal infections (RR 0.33, 95% CI 0.01 to 8.07; one study, 307 babies); and admission to NICU (RR 1.32, 95% CI 0.47 to 3.73; one study, 307 babies). The study did not assess our other primary outcomes: positive birth experience; chorioamnionitis; maternal pain. Routine four-hourly vaginal examinations versus routine two-hourly examinations (one study, 150 women and babies) UK study involving primiparous women in labour at term. We assessed the certainty of the evidence as very low. Compared with routine two-hourly vaginal examinations, routine four-hourly vaginal examinations may have little or no effect, with data compatible with both benefit and harm, on: augmentation of labour (RR 0.97, 95% CI 0.60 to 1.57; one study, 109 women); and spontaneous vaginal birth (RR 1.02, 95% CI 0.83 to 1.26; one study, 150 women). The study did not assess our other primary outcomes: positive birth experience; chorioamnionitis; neonatal infection; admission to NICU; maternal pain. Routine vaginal examinations versus vaginal examinations as indicated (one study, 204 women and babies) Study in Malaysia involving primiparous women being induced at term. We assessed the certainty of the evidence as low. Compared with vaginal examinations as indicated, routine four-hourly vaginal examinations may result in more women having their labour augmented (RR 2.55, 95% CI 1.03 to 6.31; one study, 204 women). There may be little or no effect on: • spontaneous vaginal birth (RR 1.08, 95% CI 0.73 to 1.59; one study, 204 women); • chorioamnionitis (RR 3.06, 95% CI 0.13 to 74.21; one study, 204 women); • neonatal infection (RR 4.08, 95% CI 0.46 to 35.87; one study, 204 babies); • admission to NICU (RR 2.04, 95% CI 0.63 to 6.56; one study, 204 babies). The study did not assess our other primary outcomes of positive birth experience or maternal pain. AUTHORS' CONCLUSIONS Based on these findings, we cannot be certain which method is most effective or acceptable for assessing labour progress. Further large-scale RCT trials are required. These should include essential clinical and experiential outcomes. This may be facilitated through the development of a tool to measure positive birth experiences. Data from qualitative studies are also needed to fully assess whether methods to evaluate labour progress meet women's needs for a safe and positive labour and birth, and if not, to develop an approach that does.
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Affiliation(s)
- Gill Moncrieff
- School of Community Health and Midwifery, University of Central Lancashire, Preston, UK
| | - Gillian Ml Gyte
- Cochrane Pregnancy and Childbirth Group, Department of Women's and Children's Health, University of Liverpool, Liverpool, UK
| | - Hannah G Dahlen
- School of Nursing and Midwifery, Western Sydney University, Penrith, Australia
| | - Gill Thomson
- School of Community Health and Midwifery, University of Central Lancashire, Preston, UK
| | - Mandisa Singata-Madliki
- Effective Care Research Unit, University of the Witwatersrand/University of Fort Hare/East London Hospital complex, East London, South Africa
| | - Andrew Clegg
- Faculty of Health and Wellbeing, University of Central Lancashire, Preston, UK
| | - Soo Downe
- Research in Childbirth and Health (ReaCH) unit, University of Central Lancashire, Preston, UK
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8
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Hassan WNM, Shallal F, Roomi AB. Prediction of Successful Induction of Labor using Ultrasonic Fetal Parameters. CURRENT WOMEN S HEALTH REVIEWS 2022. [DOI: 10.2174/1573404817666210105151803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Background:
Induction of labor (IOL) is a common obstetrical procedure. Bishop's score was the single
predictor element used by practitioners to assess the risk of failure, which led to an increase in cesarean sections (CS).
Ultrasound (US) examination was proposed since the variability limitations of Bishop score warranted alternative
assessment tools.
Objective:
This study verifies how the US and other maternal parameters are used in the transperineal approach as an
indication and as a predictor of successful induction.
Material and methods:
A prospective clinical study of 100 participants with term singleton pregnancy referred for IOL
and who fit the criteria of this study. Their maternal parameters and fetal head to perineum distance (HPD), measured by
the transperineal US, were calculated before the induction. After the induction, the patients were stratified into two
groups, which are vaginal delivery (68%) and CS (32%). The estimated time interval to delivery was also recorded.
Results:
None of the maternal parameters was significant; the P-values of maternal age, parity, body mass index (BMI),
gestational age, and weight of the fetus is 0.75, 0.75, 0.69, 0.81, and 0.81, respectively. One-way ANOVA test estimated
the most significant factors for inducing labor. Fetal HPD and induction to delivery interval were remarkably significant
in both groups <0.0001.
Conclusion:
The shorter the HPD (<47.65±1.66 mm), the higher the possibility of vaginal delivery and a shorter delivery
interval. By contrast, the longer HPD (>52.56±1.93mm), the lower the possibility of vaginal delivery and a longer
delivery interval. These promising results may serve as a valuable tool in predicting a mode of delivery.
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Affiliation(s)
| | - Fatin Shallal
- Department of Obstetrics and Gynecology, College of Medicine, Mustansiriyah University, Baghdad, Iraq
| | - Ali B. Roomi
- Ministry
of Education, Directorate of Education, Thi-Qar, Iraq
- College of Health and Medical Technology, Al-Ayen University,
Thi-Qar, Iraq
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9
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Kamel R, Negm S, Badr I, Kahrs BH, Eggebø TM, Iversen JK. Fetal head descent assessed by transabdominal ultrasound: a prospective observational study. Am J Obstet Gynecol 2022; 226:112.e1-112.e10. [PMID: 34389293 DOI: 10.1016/j.ajog.2021.07.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 07/28/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Determining fetal head descent, expressed as fetal head station and engagement is an essential part of monitoring progression in labor. Assessing fetal head station is based on the distal part of the fetal skull, whereas assessing engagement is based on the proximal part. Prerequisites for assisted vaginal birth are that the fetal head should be engaged and its lowermost part at or below the level of the ischial spines. The part of the fetal head above the pelvic inlet reflects the true descent of the largest diameter of the skull. In molded (reshaped) fetal heads, the leading bony part of the skull may be below the ischial spines while the largest diameter of the fetal skull still remains above the pelvic inlet. An attempt at assisted vaginal birth in such a situation would be associated with risks. Therefore, the vaginal or transperineal assessments of station should be supplemented with a transabdominal examination. We suggest a method for the assessment of fetal head descent with transabdominal ultrasound. OBJECTIVE To investigate the correlation between transabdominal and transperineal assessment of fetal head descent, and to study fetal head shape at different labor stages and head positions. STUDY DESIGN Women with term singleton cephalic pregnancies admitted to the labor ward for induction of labor or in spontaneous labor, at the Cairo University Hospital and Oslo University Hospital from December 2019 to December 2020 were included. Fetal head descent was assessed with transabdominal ultrasound as the suprapubic descent angle between a longitudinal line through the symphysis pubis and a line from the upper part of the symphysis pubis extending tangentially to the fetal skull. We compared measurements with transperineally assessed angle of progression and investigated interobserver agreement. We also measured the part of fetal head above and below the symphysis pubis at different labor stages. RESULTS The study population comprised 123 women, of whom 19 (15%) were examined before induction of labor, 8 (7%) in the latent phase, 52 (42%) in the active first stage and 44 (36%) in the second stage. The suprapubic descent angle and the angle of progression could be measured in all cases. The correlation between the transabdominal and transperineal measurements was -0.90 (95% confidence interval, -0.86 to -0.93). Interobserver agreement was examined in 30 women and the intraclass correlation coefficient was 0.98 (95% confidence interval, 0.95-0.99). The limits of agreement were from -9.5 to 7.8 degrees. The fetal head was more elongated in occiput posterior position than in non-occiput posterior positions in the second stage of labor. CONCLUSION We present a novel method of examining fetal head descent by assessing the proximal part of the fetal skull with transabdominal ultrasound. The correlation with transperineal ultrasound measurements was strong, especially early in labor. The fetal head was elongated in the occiput posterior position during the second stage of labor.
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10
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Lau SL, Kwan A, Tse WT, Poon LC. The use of ultrasound, fibronectin and other parameters to predict the success of labour induction. Best Pract Res Clin Obstet Gynaecol 2021; 79:27-41. [PMID: 34879989 DOI: 10.1016/j.bpobgyn.2021.10.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 10/31/2021] [Indexed: 01/03/2023]
Abstract
Induction of labour is a common obstetrical procedure and is undertaken when the benefits of delivery are considered to outweigh the risks of continuation of pregnancy. However, more than one-fifth of induction cases fail to result in vaginal births and lead to unplanned caesarean deliveries, which compromise the birth experience and have negative clinical and resource implications. The need for accurate prediction of successful labour induction is increasingly recognised and many researchers have attempted to evaluate the potential predictability of different factors including maternal characteristics, Bishop score, various biochemical markers and ultrasound markers and derive predictive models to address this issue.
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Affiliation(s)
- So Ling Lau
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong
| | - Angel Kwan
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong
| | - Wing Ting Tse
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong
| | - Liona C Poon
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Hong Kong.
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11
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Kahrs BH, Eggebø TM. Intrapartum ultrasound in women with prolonged first stage of labor. Am J Obstet Gynecol MFM 2021; 3:100427. [PMID: 34273584 DOI: 10.1016/j.ajogmf.2021.100427] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 06/10/2021] [Accepted: 06/21/2021] [Indexed: 10/20/2022]
Abstract
The first stage of labor is from the start of active labor until the cervix is fully dilatated. To assess labor progress during this stage, a clinical examination has traditionally been done. The cervical dilatation, fetal head position, and fetal head station are evaluated. Moreover, these observations can be made with an ultrasound examination. Studies have shown that traditional clinical examinations are subjective, have poor reproducibility, and are unreliable. Ultrasound examinations of the fetal head station and fetal head position in the first stage of labor might predict labor outcome and mode of delivery and can help in decision making when prolonged first stage of labor is diagnosed.
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Affiliation(s)
- Birgitte Heiberg Kahrs
- National Center for Fetal Medicine, Trondheim University Hospital (St. Olav's University Hospital), Trondheim, Norway (Drs Kahrs and Eggebø); Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway (Drs Kahrs and Eggebø).
| | - Torbjørn Moe Eggebø
- National Center for Fetal Medicine, Trondheim University Hospital (St. Olav's University Hospital), Trondheim, Norway (Drs Kahrs and Eggebø); Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway (Drs Kahrs and Eggebø)
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12
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Rizzo G, Aloisio F, Bacigalupi A, Mappa I, Słodki M, Makatsarya A, D'Antonio F. Women's compliance with ultrasound in labor: a prospective observational study. J Matern Fetal Neonatal Med 2021; 34:1454-1458. [PMID: 31257977 DOI: 10.1080/14767058.2019.1638903] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To explore women's compliance with ultrasound evaluation (UE) during labor compared with standard vaginal examination (VE). METHODS This is a prospective observational cohort study including uncomplicated singleton pregnancies with the fetus in vertex presentation from 37 weeks of gestation. Labor progress was assessed by both VE and UE. Women acceptability was assessed using a modified Wijma Delivery experience questionnaire (W-DEQ) based on six different items and resulting in a score ranging from 6 (not tolerated) to 36 (well tolerated). The primary outcome of the study was to compute the differences in the overall modified W-DEQ questionnaire between UE and VE. Secondary outcomes were to assess the differences between UE and VE in each individual item of modified W-DEQ questionnaire and to elucidate whether such differences persist in pregnancies experiencing compared to those not experiencing prolonged labor or unplanned emergency operative delivery. RESULTS One hundred and twenty-four women were included in the study and 109 completed the full questionnaire. The overall global acceptability score was significantly higher for UE compared to VE (27 IQR 25-29 versus 18 IQR 16-22; p ≤ .001). When stratifying the analysis to each individual item of the W-DEQ questionnaire separately, significant differences for intrusiveness (p = .04); painful (p = .01) and privacy ensured (p = .01) were found between UE and VE. In pregnancies experiencing prolonged labor, the global W-DEQ acceptability score for UE resulted significantly higher (30 versus 23; p = .005) than in those delivering within 12 hours. Likewise, UE acceptability score was significantly higher (28 IQR 24-30 versus 22 IQR 20-25; p = .01) in women having spontaneous vaginal birth compared to those undergoing operative delivery. Finally, there was no difference in the acceptability score between women with spontaneous onset of labor compared to those undergoing elective induction. CONCLUSIONS UE is better tolerated VE for assessment of labor progress; women's compliance with UE prior to delivery increased in the presence of prolonged labor or unplanned operative delivery.
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Affiliation(s)
- Giuseppe Rizzo
- Division of Maternal Fetal Medicine, Università di Roma Tor Vergata, Ospedale Cristo Re Roma, Rome, Italy
- Department of Obstetrics and Gynecology, First I.M. Sechenov Moscow State Medical University, Moscow, Russia
| | - Filomena Aloisio
- Division of Maternal Fetal Medicine, Università di Roma Tor Vergata, Ospedale Cristo Re Roma, Rome, Italy
| | - Alessandra Bacigalupi
- Division of Maternal Fetal Medicine, Università di Roma Tor Vergata, Ospedale Cristo Re Roma, Rome, Italy
| | - Ilenia Mappa
- Division of Maternal Fetal Medicine, Università di Roma Tor Vergata, Ospedale Cristo Re Roma, Rome, Italy
| | - Maciej Słodki
- Faculty of Health Sciences, State University of Applied Sciences in Płock, Lódz, Poland
- Department of Prenatal Cardiology, Polish Mother's Memorial Hospital Research Institute, Lódz, Poland
| | - Alexander Makatsarya
- Department of Obstetrics and Gynecology, First I.M. Sechenov Moscow State Medical University, Moscow, Russia
| | - Francesco D'Antonio
- Department of Clinical Medicine, Faculty of Health Sciences, Women's Health and Perinatology Research Group, UiT - the Arctic University of Norway, Tromsø, Norway
- Department of Obstetrics and Gynecology, University Hospital of Northern Norway, Tromsø, Norway
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13
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Hjartardóttir H, Lund SH, Benediktsdóttir S, Geirsson RT, Eggebø TM. Fetal descent in nulliparous women assessed by ultrasound: a longitudinal study. Am J Obstet Gynecol 2021; 224:378.e1-378.e15. [PMID: 33039395 DOI: 10.1016/j.ajog.2020.10.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 09/25/2020] [Accepted: 10/02/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND Ultrasound measurements offer objective and reproducible methods to measure the fetal head station. Before these methods can be applied to assess labor progression, the fetal head descent needs to be evaluated longitudinally in well-defined populations and compared with the existing data derived from clinical examinations. OBJECTIVE This study aimed to use ultrasound measurements to describe the fetal head descent longitudinally as labor progressed through the active phase in nulliparous women with spontaneous onset of labor. STUDY DESIGN This was a single center, prospective cohort study at the Landspitali - The National University Hospital of Iceland, Reykjavik, Iceland, from January 2016 to April 2018. Nulliparous women with a single fetus in cephalic presentation and spontaneous labor onset at a gestational age of ≥37 weeks, were eligible. Participant inclusion occurred during admission for women with an established active phase of labor or at the start of the active phase for women admitted during the latent phase. The active phase was defined as an effaced cervix dilated to at least 4 cm in women with regular contractions. According to the clinical protocol, vaginal examinations were done at entry and subsequently throughout labor, paired each time with a transperineal ultrasound examination by a separate examiner, with both examiners being blinded to the other's results. The measurements used to assess the fetal head station were the head-perineum distance and angle of progression. Cervical dilatation was examined clinically. RESULTS The study population comprised 99 women. The labor patterns for the head-perineum distance, angle of progression, and cervical dilatation differentiated the participants into 75 with spontaneous deliveries, 16 with instrumental vaginal deliveries, and 8 cesarean deliveries. At the inclusion stage, the cervix was dilated 4 cm in 26 of the women, 5 cm in 30 of the women, and ≥6 cm in 43 women. One cesarean and 1 ventouse delivery were performed for fetal distress, whereas the remaining cesarean deliveries were conducted because of a failure to progress. The total number of examinations conducted throughout the study was 345, with an average of 3.6 per woman. The ultrasound-measured fetal head station both at the first and last examination were associated with the delivery mode and remaining time of labor. In spontaneous deliveries, rapid head descent started around 4 hours before birth, the descent being more gradual in instrumental deliveries and absent in cesarean deliveries. A head-perineum distance of 30 mm and angle of progression of 125° separately predicted delivery within 3.0 hours (95% confidence interval, 2.5-3.8 hours and 2.4-3.7 hours, respectively) in women delivering vaginally. Although the head-perineum distance and angle of progression are independent methods, both methods gave similar mirror image patterns. The fetal head station at the first examination was highest for the fetuses in occiput posterior position, but the pattern of rapid descent was similar for all initial positions in spontaneously delivering women. Oxytocin augmentation was used in 41% of women; in these labors a slower descent was noted. Descent was only slightly slower in the 62% of women who received epidural analgesia. A nonlinear relationship was observed between the fetal head station and dilatation. CONCLUSION We have established the ultrasound-measured descent patterns for nulliparous women in spontaneous labor. The patterns resemble previously published patterns based on clinical vaginal examinations. The ultrasound-measured fetal head station was associated with the delivery mode and remaining time of labor.
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di Pasquo E, Ramirez Zegarra R, Kiener AJO, Gobbi L, Dall'Asta A, Fieschi L, Cugini L, Copelli M, Frusca T, Ghi T. Usefulness of an Intrapartum Ultrasound Simulator (IUSim™) for Midwife Training: Results from an RCT. Fetal Diagn Ther 2020; 48:120-127. [PMID: 33296898 DOI: 10.1159/000512047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 10/05/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION We conducted a randomized study to determine whether a training session on a dedicated simulator (IUSim™) would facilitate the midwives in learning the technique of transperineal intrapartum ultrasound. METHODS Following a 30-min multimedia presentation including images and videos on how to obtain and measure the angle of progression (AoP) and the head-perineum distance (HPD), 6 midwives with no prior experience in intrapartum ultrasound were randomly split into 2 groups: 3 of them were assigned to the "training group" and 3 to the "control group." The midwives belonging to the former group were taught to measure the 2 sonographic parameters during a 3-h practical session conducted on IUSim™ under the supervision of an expert obstetrician. In the following 3 months, all the 6 midwives were asked to independently perform transperineal ultrasound during their clinical practice and to measure on the acquired images either the AoP or the HPD. The sonographic images were examined in blind by the teaching obstetrician who assigned a 0-3 score to the image quality (IQS) and to the measurement quality (MQS). RESULTS A total of 48 ultrasound images (24 patients) from 5 midwives were acquired and included in the study analysis. A midwife of the "training group" declined participation after the practical session. Independently from the randomization group, the image quality score (IQS + MQS) was significantly higher for the HPD compared with the AoP (2.5 ± 0.66 vs. 1.79 ± 1.14; p = 0.01). In the training group, the MQS of either AoP (2.66 ± 0.5 vs.1.46 ± 1.45. p = 0.038) and the HPD (2.9 ± 0.33 vs. 1.87 ± 0.83 p = 0.002) was significantly higher in comparison with the control group, while the IQS of both measurements was comparable between the 2 groups (1.91 ± 1.24 vs. 2.25 ± 0.865; p = 0.28). CONCLUSION The use of a dedicated simulator may facilitate the midwives in learning how to measure the AoP and the HPD on transperineal ultrasound images.
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Affiliation(s)
- Elvira di Pasquo
- Department of Medicine and Surgery, Obstetrics and Gynecology Unit, University of Parma, Parma, Italy
| | - Ruben Ramirez Zegarra
- Department of Medicine and Surgery, Obstetrics and Gynecology Unit, University of Parma, Parma, Italy.,Frankfurt Oder Klinikum, Frankfurt, Germany
| | - Ariane J O Kiener
- Department of Medicine and Surgery, Obstetrics and Gynecology Unit, University of Parma, Parma, Italy
| | - Laura Gobbi
- Department of Medicine and Surgery, Obstetrics and Gynecology Unit, University of Parma, Parma, Italy
| | - Andrea Dall'Asta
- Department of Medicine and Surgery, Obstetrics and Gynecology Unit, University of Parma, Parma, Italy
| | - Laura Fieschi
- Department of Medicine and Surgery, Obstetrics and Gynecology Unit, University of Parma, Parma, Italy
| | - Lodovica Cugini
- Department of Medicine and Surgery, Obstetrics and Gynecology Unit, University of Parma, Parma, Italy
| | - Monica Copelli
- Department of Medicine and Surgery, Obstetrics and Gynecology Unit, University of Parma, Parma, Italy
| | - Tiziana Frusca
- Department of Medicine and Surgery, Obstetrics and Gynecology Unit, University of Parma, Parma, Italy
| | - Tullio Ghi
- Department of Medicine and Surgery, Obstetrics and Gynecology Unit, University of Parma, Parma, Italy,
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15
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Solaiman SA, Atwa KA, Gad AA, al-Shatouri M. Transperineal ultrasound of fetal head progression in prolonged labor: women’s acceptance and ability to predict the mode of delivery. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2020. [DOI: 10.1186/s43055-020-00215-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Digital transvaginal examination of fetal head progression is subjective evaluation with many limitations. Using ultrasound (US) in the assessment of labor progression in prolonged labor is the current trend to predict the mode of delivery. The study intends to evaluate the women’s acceptance to the transperineal ultrasound (TPUS) compared with digital transvaginal examination, and its ability to predict the mode of delivery in prolonged labor. We included 28 pregnant ladies in a prolonged active phase of first or second stages of labor and followed them till delivery. TPUS was used to measure the fetal head–perineum distance (FHPD) and the angle of fetal head descent.
Results
Of the 28 participants, 53.5% of them delivered vaginally and 46.5% by Cesarean section (CS). All pregnant ladies described the TPUS as more convenient and less painful than digital vaginal examination. Cervical dilatation was negatively correlated with FHPD, and positively correlated with angle of fetal head descent. Both FHPD and angle of fetal head descent had a strong significant negative correlation. Using a cutoff value of 115° for the angle of fetal head descent, the positive predictive value (PPV) of vaginal delivery was 87%; using a cutoff value of 4.2 cm for FHPD, the PPV for vaginal delivery was 85%.
Conclusion
TPUS is more convenient, more accepted, and less painful than digital vaginal examination. Angle of head descent and FHPD are reliable predictors of the mode of delivery in prolonged labor.
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Frick A, Kostiv V, Vojtassakova D, Akolekar R, Nicolaides KH. Comparison of different methods of measuring angle of progression in prediction of labor outcome. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2020; 55:391-400. [PMID: 31692170 DOI: 10.1002/uog.21913] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 10/21/2019] [Accepted: 10/24/2019] [Indexed: 06/10/2023]
Abstract
OBJECTIVES First, to compare the manual sagittal and parasagittal and automated parasagittal methods of measuring the angle of progression (AoP) by transperineal ultrasound during labor, and, second, to develop models for the prediction of time to delivery and need for Cesarean section (CS) for failure to progress (FTP) in a population of patients undergoing induction of labor. METHODS This was a prospective observational study of transperineal ultrasound in a cohort of 512 women with a singleton pregnancy undergoing induction of labor. A random selection of 50 stored images was assessed for inter- and intraobserver reliability of AoP measurements using the manual sagittal and parasagittal and automated parasagittal methods. In cases of vaginal delivery, univariate linear, multiple linear and quantile regression analyses were performed to predict time to delivery. Univariate and multivariate binomial logistic regression analyses were performed to predict CS for FTP in the first stage of labor. RESULTS The intraclass correlation coefficient (ICC) for the manual parasagittal method for a single observer was 0.97 (95% CI, 0.95-0.98) and for two observers it was 0.96 (95% CI, 0.93-0.98), indicating good reliability. The ICC for the sagittal method for a single observer was 0.93 (95% CI, 0.88-0.96) and for two observers it was 0.74 (95% CI, 0.58-0.84), indicating moderate reliability for a single observer and poor reliability between two observers. Bland-Altman analysis demonstrated narrower limits of agreement for the manual parasagittal approach than for the sagittal approach for both a single and two observers. The automated parasagittal method failed to capture an image in 19% of cases. The mean difference in AoP measurements between the sagittal and manual parasagittal methods was 11°. In pregnancies resulting in vaginal delivery, 54% of the variation in time to delivery was explained in a model combining parity, epidural and syntocinon use during labor and the sonographic findings of fetal head position and AoP. In the prediction of CS for FTP in the first stage of labor, a model which combined maternal factors with the sonographic measurements of AoP and estimated fetal weight was superior to one utilizing maternal factors alone (area under the receiver-operating-characteristics curve, 0.80 vs 0.76). CONCLUSIONS First, the method of measuring AoP with the greatest reliability is the manual parasagittal technique and future research should focus on this technique. Second, over half of the variation in time to vaginal delivery can be explained by a model that combines maternal factors, pregnancy characteristics and ultrasound findings. Third, the ability of AoP to provide clinically useful prediction of CS for FTP in the first stage of labor is limited. Copyright © 2019 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- A Frick
- Harris Birthright Research Centre for Fetal Medicine, King's College Hospital, London, UK
| | - V Kostiv
- Harris Birthright Research Centre for Fetal Medicine, King's College Hospital, London, UK
- Fetal Medicine Unit, Medway Maritime Hospital, Gillingham, UK
| | - D Vojtassakova
- Harris Birthright Research Centre for Fetal Medicine, King's College Hospital, London, UK
- Fetal Medicine Unit, Medway Maritime Hospital, Gillingham, UK
| | - R Akolekar
- Fetal Medicine Unit, Medway Maritime Hospital, Gillingham, UK
- Institute of Medical Sciences, Canterbury Christ Church University, Chatham, UK
| | - K H Nicolaides
- Harris Birthright Research Centre for Fetal Medicine, King's College Hospital, London, UK
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Kahrs BH, Usman S, Ghi T, Youssef A, Torkildsen EA, Lindtjørn E, Østborg TB, Benediktsdottir S, Brooks L, Harmsen L, Salvesen KÅ, Lees CC, Eggebø TM. Descent of fetal head during active pushing: secondary analysis of prospective cohort study investigating ultrasound examination before operative vaginal delivery. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2019; 54:524-529. [PMID: 31115115 DOI: 10.1002/uog.20348] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 05/13/2019] [Accepted: 05/14/2019] [Indexed: 06/09/2023]
Abstract
OBJECTIVES To investigate if descent of the fetal head during active pushing is associated with duration of operative vaginal delivery, mode of delivery and neonatal outcome in nulliparous women with prolonged second stage of labor. METHODS This was a prospective cohort study of nulliparous women with prolonged second stage of labor, conducted between November 2013 and July 2016 in five European countries. Fetal head descent was measured using transperineal ultrasound. Head-perineum distance (HPD) was measured between contractions and on maximum contraction during active pushing, and the difference between these values (ΔHPD) was calculated. The main outcome was duration of operative vaginal delivery, estimated using survival analysis to calculate hazard ratios (HRs) for vaginal delivery, with values > 1 indicating a shorter duration. HR was adjusted for prepregnancy body mass index, maternal age, induction of labor, augmentation with oxytocin and use of epidural analgesia. Pregnancies were grouped according to ΔHPD quartile, and delivery mode and neonatal outcome were compared between groups. RESULTS The study population comprised 204 women. Duration of vacuum extraction was shorter with increasing ΔHPD. Estimated mean duration was 10.0, 9.0, 8.8 and 7.5 min in pregnancies with ΔHPD in the first to fourth quartiles, respectively, and the adjusted HR for vaginal delivery, using increasing ΔHPD as a continuous variable, was 1.04 (95% CI, 1.01-1.08). Mean ΔHPD was 7 mm (range, -10 to 37 mm). ΔHPD was either negative or ≤ 2 mm in the lowest quartile. In this group, 7/50 (14%) pregnancies were delivered by Cesarean section, compared with 8/154 (5%) of those with ΔHPD > 2 mm (P < 0.05). There was no significant association between umbilical artery pH < 7.10 or 5-min Apgar score < 7 and ΔHPD quartile. CONCLUSION Minimal or no fetal head descent during active pushing was associated with longer duration of operative vaginal delivery and higher frequency of Cesarean section in nulliparous women with prolonged second stage of labor. © 2019 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of the International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- B H Kahrs
- National Center for Fetal Medicine, Trondheim University Hospital (St Olavs Hospital), Trondheim, Norway
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - S Usman
- Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - T Ghi
- Parma University Hospital, Parma, Italy
| | - A Youssef
- St Orsola Malpighi University Hospital, Bologna, Italy
| | - E A Torkildsen
- Department of Obstetrics and Gynecology, Stavanger University Hospital, Stavanger, Norway
| | - E Lindtjørn
- Department of Obstetrics and Gynecology, Stavanger University Hospital, Stavanger, Norway
| | - T B Østborg
- Department of Obstetrics and Gynecology, Stavanger University Hospital, Stavanger, Norway
| | - S Benediktsdottir
- Department of Obstetrics and Gynecology, Clinical Sciences, Lund University, Lund, Sweden
- Department of Obstetrics and Gynecology, Landspitali University Hospital, Reykjavik, Iceland
| | - L Brooks
- Hvidovre University Hospital, Copenhagen, Denmark
| | - L Harmsen
- Hvidovre University Hospital, Copenhagen, Denmark
| | - K Å Salvesen
- National Center for Fetal Medicine, Trondheim University Hospital (St Olavs Hospital), Trondheim, Norway
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - C C Lees
- Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - T M Eggebø
- National Center for Fetal Medicine, Trondheim University Hospital (St Olavs Hospital), Trondheim, Norway
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
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Tse WT, Chaemsaithong P, Chan WW, Kwan AH, Huang J, Appiah K, Chong KC, Poon LC. Labor progress determined by ultrasound is different in women requiring cesarean delivery from those who experience a vaginal delivery following induction of labor. Am J Obstet Gynecol 2019; 221:335.e1-335.e18. [PMID: 31153931 DOI: 10.1016/j.ajog.2019.05.040] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 05/22/2019] [Accepted: 05/24/2019] [Indexed: 12/28/2022]
Abstract
BACKGROUND The diagnosis of labor dystocia generally is determined by the deviation of labor progress, which is assessed by the use of a partogram. Recently, intrapartum transperineal ultrasound for the assessment of fetal head descent has been introduced to assess labor progress in the first stage of labor in a more objective and noninvasive way. OBJECTIVE The objective of the study was to determine the differences in labor progress by the use of serial transperineal ultrasound assessment of fetal head descent between women having vaginal and cesarean delivery. STUDY DESIGN This was a prospective longitudinal study performed in 315 women with singleton pregnancy who were undergoing labor induction at term between December 2016 and December 2017. Paired assessment of cervical dilation and fetal head station by vaginal examination and transperineal ultrasonographic assessment of parasagittal angle of progression and head-perineum distance were made serially after the commencement of labor induction. According to the hospital protocol, assessment was performed every 24 hours and 4 hours, respectively, during latent and active phases of labor. The researchers and the clinical team were blinded to each other's findings. The repeated measures data were analyzed by mixed effect models. To determine the effect of mode of delivery on the association between parasagittal angle of progression and head-perineum distance against fetal head station and cervical dilation, the significance of the interaction term between each mode of delivery and fetal head station or cervical dilation was determined, which accounted for parity and obesity. Area under receiver-operating characteristic curve was used to evaluate the performance of serial intrapartum sonography in predicting women with cesarean delivery because of failure to progress. RESULTS The total number of paired vaginal examination and ultrasound assessments was 1198, with a median of 3 per woman. The median assessment-to-assessment interval was 4.6 hours (interquartile range, 4.3-5.1 hours). Women who achieved vaginal delivery (n=261) had steeper slopes of parasagittal angle of progression and head-perineum distance against fetal head station and cervical dilation than those who achieved cesarean delivery (n=54). Objectively, an additional decrease of 5.11 and 1.37 degrees in parasagittal angle of progression was observed for an unit increase in fetal head station and cervical dilation, respectively, in women who required cesarean delivery (P<.01; P=.01), compared with women who achieved vaginal delivery, after taking account of repeated measures from individuals and confounding factors. The respective additional increases in head-perineum distance for a unit increase in fetal head station and cervical dilation were 0.27 cm (P<.01) and 0.12 cm (P<.01). A combination of maternal characteristics with the temporal changes of parasagittal angle of progression for an unit increase in fetal head station achieved an area under receiver-operating characteristic curve of 0.85 (95% confidence interval, 0.76-0.94), with sensitivity of 79% and specificity of 80%, for the prediction of women who required cesarean delivery because of failure to progress. CONCLUSION The differences in labor progress between vaginal and cesarean delivery have been illustrated objectively by serial intrapartum transperineal ultrasonographic assessment of fetal head descent. This tool is potentially predictive of women who will require cesarean delivery because of failure to progress.
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Lees C, Usman S. Response to: Vaginal examination and fear of childbirth. Aust N Z J Obstet Gynaecol 2019; 58:E25. [PMID: 30536509 DOI: 10.1111/ajo.12908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christoph Lees
- Centre of Fetal Care - Fetal Medicine, Imperial College London, London, UK
| | - Sana Usman
- Centre of Fetal Care - Fetal Medicine, Imperial College London, London, UK
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Chaemsaithong P, Kwan AH, Tse WT, Lim WT, Chan WW, Chong KC, Leung TY, Poon LC. Factors that affect ultrasound-determined labor progress in women undergoing induction of labor. Am J Obstet Gynecol 2019; 220:592.e1-592.e15. [PMID: 30735668 DOI: 10.1016/j.ajog.2019.01.236] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 01/27/2019] [Accepted: 01/30/2019] [Indexed: 11/26/2022]
Abstract
BACKGROUND The traditional approach to the assessment of labor progress is by digital vaginal examination; however, it is subjective and imprecise. Recent studies have investigated the role of transperineal ultrasonographic assessment of fetal head descent by measuring the angle of progression and head-perineum distance. OBJECTIVE The objective of this study was to evaluate factors that affected labor progress, which were defined by the transperineal ultrasonographic parameters, in women who achieved vaginal delivery. STUDY DESIGN This was a prospective longitudinal study performed in 315 women with singleton pregnancy who underwent labor induction at term between December 2016 and December 2017. Paired assessment of cervical dilation and fetal head station by vaginal examination and transperineal ultrasonographic assessment of fetal head descent (parasagittal angle of progression and head-perineum distance) were made serially after the commencement of labor induction until full cervical dilation. The researchers were blinded to the findings of the clinical team's vaginal examination and vice versa. The repeated measure data were analyzed by mixed effect models to identify the significant factors (age ≥35 years, obesity, parity, methods of labor induction, and epidural anesthesia) that affected the relationship between parasagittal angle of progression and head-perineum distance against fetal head station and cervical dilation. RESULTS The total number of paired vaginal examination and transperineal ultrasonographic assessments among the 261 women (82.9%) with vaginal delivery was 945, with a median of 3 per woman. The median assessment-to-assessment interval was 4.6 hours (interquartile range, 4.3-5.2). Multiparity and mechanical methods of labor induction were associated with a faster rate of fetal head descent, which was determined by head-perineum distance against fetal head station, than nulliparity and the use of a slow-release vaginal pessary, respectively. An additional increase of 0.10 cm in head-perineum distance was observed, for an unit increase in fetal head station in nulliparous women (P=.03) and women who had a slow-release vaginal pessary (P=.02), compared with multiparous women and those who had mechanical methods for labor induction. The use of epidural anesthesia was associated with a slower rate of fetal head descent, which was determined by both parasagittal angle of progression and head-perineum distance, against fetal head station. An additional decrease of 3.66 degrees in parasagittal angle of progression (P=.04) and an additional increase in 0.33 cm in head-perineum distance (P≤.001) were observed for a unit increase in fetal head station in women with the use of epidural anesthesia, compared with those without. Obese women had higher head-perineum distance overall, compared with normal weight women; at different cross-sections of time periods, obesity appeared to be associated with a slower rate of change between head-perineum distance and cervical dilation. Advanced maternal age did not affect transperineal ultrasound-determined labor progress (P>.05). CONCLUSION Parity, methods of labor induction, the use of epidural anesthesia, and obesity affect labor progress, which has been illustrated objectively by serial transperineal ultrasonographic assessment of fetal head descent.
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Acceptability of intrapartum ultrasound by mothers in an African population. J Ultrasound 2019; 23:55-59. [PMID: 31069758 PMCID: PMC7010652 DOI: 10.1007/s40477-019-00382-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 04/29/2019] [Indexed: 11/06/2022] Open
Abstract
Introduction Intrapartum ultrasound is gaining high acceptance by many women as another method for assessing labour progression. Despite growing evidence of the effectiveness of ultrasound in labour, the acceptance of intrapartum ultrasound has not been previously investigated in black Africans. Aim This study aimed to determine women’s acceptance of intrapartum ultrasound and their preference for transperineal ultrasound or digital vaginal examination (digital VE) in Ghana. Methods An analytical cross-sectional study was conducted among mothers who had had both digital VE and transperineal ultrasound during labour in a tertiary hospital. Information about their sociodemographic characteristics, experience with, and preference for ultrasound or digital VE in labour using a pretested structured questionnaire was obtained. Their experiences were categorised as ‘tolerable, ‘quite uncomfortable’ or ‘very uncomfortable’. Categorical variables were compared using Fisher’s exact test. A p value < 0.05 was considered statistically significant. Results Altogether, 196 women were recruited into the study. The mean age of the women was 26.7 years (standard deviation, 4.6 years). Nearly half (47%) of the women had never delivered before. Significantly more women considered transperineal ultrasound to be more tolerable than digital VE (66% vs. 40%; p < 0.001). Almost all the women (97.5%) described their experience with transperineal ultrasound to be better than digital VE, and would choose transperineal ultrasound over digital VE in the future (98.5% vs. 1.5%; p < 0.001). Discussion The findings of this study are comparable to those of other related studies reported recently. This research confirms high acceptance of ultrasound in labour by mothers from different countries and across continents, implying that cultural differences do not influence women’s responses to and interest in intrapartum ultrasound. Conclusion Most women found ultrasound in labour to be more tolerable than digital VE. Whenever possible, transperineal ultrasound should be provided as an alternative to digital VE during labour.
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Affiliation(s)
- Shigeki Matsubara
- Department of Obstetrics and GynecologyJichi Medical University Tochigi Japan
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