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Malvasi A, Malgieri LE, Cicinelli E, Vimercati A, Achiron R, Sparić R, D'Amato A, Baldini GM, Dellino M, Trojano G, Beck R, Difonzo T, Tinelli A. AIDA (Artificial Intelligence Dystocia Algorithm) in Prolonged Dystocic Labor: Focus on Asynclitism Degree. J Imaging 2024; 10:194. [PMID: 39194983 DOI: 10.3390/jimaging10080194] [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: 06/16/2024] [Revised: 07/29/2024] [Accepted: 08/05/2024] [Indexed: 08/29/2024] Open
Abstract
Asynclitism, a misalignment of the fetal head with respect to the plane of passage through the birth canal, represents a significant obstetric challenge. High degrees of asynclitism are associated with labor dystocia, difficult operative delivery, and cesarean delivery. Despite its clinical relevance, the diagnosis of asynclitism and its influence on the outcome of labor remain matters of debate. This study analyzes the role of the degree of asynclitism (AD) in assessing labor progress and predicting labor outcome, focusing on its ability to predict intrapartum cesarean delivery (ICD) versus non-cesarean delivery. The study also aims to assess the performance of the AIDA (Artificial Intelligence Dystocia Algorithm) algorithm in integrating AD with other ultrasound parameters for predicting labor outcome. This retrospective study involved 135 full-term nulliparous patients with singleton fetuses in cephalic presentation undergoing neuraxial analgesia. Data were collected at three Italian hospitals between January 2014 and December 2020. In addition to routine digital vaginal examination, all patients underwent intrapartum ultrasound (IU) during protracted second stage of labor (greater than three hours). Four geometric parameters were measured using standard 3.5 MHz transabdominal ultrasound probes: head-to-symphysis distance (HSD), degree of asynclitism (AD), angle of progression (AoP), and midline angle (MLA). The AIDA algorithm, a machine learning-based decision support system, was used to classify patients into five classes (from 0 to 4) based on the values of the four geometric parameters and to predict labor outcome (ICD or non-ICD). Six machine learning algorithms were used: MLP (multi-layer perceptron), RF (random forest), SVM (support vector machine), XGBoost, LR (logistic regression), and DT (decision tree). Pearson's correlation was used to investigate the relationship between AD and the other parameters. A degree of asynclitism greater than 70 mm was found to be significantly associated with an increased rate of cesarean deliveries. Pearson's correlation analysis showed a weak to very weak correlation between AD and AoP (PC = 0.36, p < 0.001), AD and HSD (PC = 0.18, p < 0.05), and AD and MLA (PC = 0.14). The AIDA algorithm demonstrated high accuracy in predicting labor outcome, particularly for AIDA classes 0 and 4, with 100% agreement with physician-practiced labor outcome in two cases (RF and SVM algorithms) and slightly lower agreement with MLP. For AIDA class 3, the RF algorithm performed best, with an accuracy of 92%. AD, in combination with HSD, MLA, and AoP, plays a significant role in predicting labor dystocia and labor outcome. The AIDA algorithm, based on these four geometric parameters, has proven to be a promising decision support tool for predicting labor outcome and may help reduce the need for unnecessary cesarean deliveries, while improving maternal-fetal outcomes. Future studies with larger cohorts are needed to further validate these findings and refine the cut-off thresholds for AD and other parameters in the AIDA algorithm.
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Affiliation(s)
- Antonio Malvasi
- Department of Interdisciplinary Medicine (DIM), Unit of Obstetrics and Gynecology, University of Bari "Aldo Moro", Policlinico of Bari, Piazza Giulio Cesare 11, 70124 Bari, Italy
| | | | - Ettore Cicinelli
- Department of Interdisciplinary Medicine (DIM), Unit of Obstetrics and Gynecology, University of Bari "Aldo Moro", Policlinico of Bari, Piazza Giulio Cesare 11, 70124 Bari, Italy
| | - Antonella Vimercati
- Department of Precision and Regenerative Medicine and Jonic Area, University of Bari "Aldo Moro", 70121 Bari, Italy
| | - Reuven Achiron
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel
| | - Radmila Sparić
- Clinic for Gynecology and Obstetrics, University Clinical Centre of Serbia, 11000 Belgrade, Serbia
- Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Antonio D'Amato
- Department of Interdisciplinary Medicine (DIM), Unit of Obstetrics and Gynecology, University of Bari "Aldo Moro", Policlinico of Bari, Piazza Giulio Cesare 11, 70124 Bari, Italy
| | - Giorgio Maria Baldini
- Department of Interdisciplinary Medicine (DIM), Unit of Obstetrics and Gynecology, University of Bari "Aldo Moro", Policlinico of Bari, Piazza Giulio Cesare 11, 70124 Bari, Italy
| | - Miriam Dellino
- Department of Interdisciplinary Medicine (DIM), Unit of Obstetrics and Gynecology, University of Bari "Aldo Moro", Policlinico of Bari, Piazza Giulio Cesare 11, 70124 Bari, Italy
| | - Giuseppe Trojano
- Department of Maternal and Child Gynecologic Oncology Unit, "Madonna delle Grazie" Hospital ASM, 75100 Matera, Italy
| | - Renata Beck
- Department of Medical and Surgical Sciences, Anesthesia and Intensive Care Unit, Policlinico Riuniti Foggia, University of Foggia, 71122 Foggia, Italy
| | - Tommaso Difonzo
- Department of Interdisciplinary Medicine (DIM), Unit of Obstetrics and Gynecology, University of Bari "Aldo Moro", Policlinico of Bari, Piazza Giulio Cesare 11, 70124 Bari, Italy
| | - Andrea Tinelli
- Department of Obstetrics and Gynecology and CERICSAL (CEntro di RIcerca Clinico SALentino), Veris delli Ponti Hospital Scorrano, 73020 Lecce, Italy
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Ghi T, Dall'Asta A. Sonographic evaluation of the fetal head position and attitude during labor. Am J Obstet Gynecol 2024; 230:S890-S900. [PMID: 37278991 DOI: 10.1016/j.ajog.2022.06.003] [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: 07/05/2021] [Revised: 06/05/2022] [Accepted: 06/06/2022] [Indexed: 06/07/2023]
Abstract
Fetal malpresentation, malposition, and asynclitism are among the most common determinants of a protracted active phase of labor, arrest of dilatation during the first stage, and arrest of descent in the second stage. The diagnosis of these conditions is traditionally based on vaginal examination, which is subjective and poorly reproducible. Intrapartum sonography has been demonstrated to yield higher accuracy than vaginal examination in characterizing fetal malposition, and some guidelines endorse its use for the verification of the occiput position before performing an instrumental delivery. It is also useful for the objective diagnosis of the malpresentation or asynclitism of the fetal head. According to our experience, the sonographic assessment of the head position in labor is simple to perform also for clinicians with basic ultrasound skills, whereas the assessment of malpresentation and asynclitism warrants a higher level of expertise. When clinically appropriate, the fetal occiput position can be easily ascertained using transabdominal sonography combining the axial and the sagittal planes. With the transducer positioned on the maternal suprapubic region, the fetal head can be visualized, and landmarks including the fetal orbits, the midline, and the occiput itself with the cerebellum and the cervical spine (depending on the type of fetal position) can be demonstrated below the probe. Sinciput, brow, and face represent the 3 "classical" variants of cephalic malpresentation and are characterized by a progressively increasing degree of deflexion from vertex presentation. Transabdominal sonography has been recently suggested for the objective assessment of the fetal head attitude when a cephalic malpresentation is clinically suspected. Fetal attitude can be evaluated on the sagittal plane with either a subjective or an objective approach. Two different sonographic parameters such as the occiput-spine angle and the chin-chest angle have been recently described to quantify the degree of flexion in fetuses in non-occiput-posterior or occiput-posterior position, respectively. Finally, although clinical examination still represents the mainstay of diagnosis of asynclitism, the use of intrapartum sonography has been shown to confirm the digital findings. The sonographic diagnosis of asynclitism can be achieved in expert hands using a combination of transabdominal and transperineal sonography. At suprapubic sonography on the axial plane only, 1 orbit can be visualized (squint sign) while the sagittal suture appears anteriorly (posterior asynclitism) or posteriorly (anterior asynclitism) displaced. Eventually the transperineal approach does not allow the visualization of the cerebral midline on the axial plane if the probe is perpendicular to the fourchette. In this expert review we summarize the indications, technique, and clinical role of intrapartum sonographic evaluation of fetal head position and attitude.
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Affiliation(s)
- Tullio Ghi
- 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
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He X, Zeng X, Troendle J, Ahlberg M, Tilden EL, Souza JP, Bernitz S, Duan T, Oladapo OT, Fraser W, Zhang J. New insights on labor progression: a systematic review. Am J Obstet Gynecol 2023; 228:S1063-S1094. [PMID: 37164489 DOI: 10.1016/j.ajog.2022.11.1299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/26/2022] [Accepted: 11/28/2022] [Indexed: 03/18/2023]
Abstract
The past 20 years witnessed an invigoration of research on labor progression and a change of thinking regarding normal labor. New evidence is emerging, and more advanced statistical methods are applied to labor progression analyses. Given the wide variations in the onset of active labor and the pattern of labor progression, there is an emerging consensus that the definition of abnormal labor may not be related to an idealized or average labor curve. Alternative approaches to guide labor management have been proposed; for example, using an upper limit of a distribution of labor duration to define abnormally slow labor. Nonetheless, the methods of labor assessment are still primitive and subject to error; more objective measures and more advanced instruments are needed to identify the onset of active labor, monitor labor progression, and define when labor duration is associated with maternal/child risk. Cervical dilation alone may be insufficient to define active labor, and incorporating more physical and biochemical measures may improve accuracy of diagnosing active labor onset and progression. Because the association between duration of labor and perinatal outcomes is rather complex and influenced by various underlying and iatrogenic conditions, future research must carefully explore how to integrate statistical cut-points with clinical outcomes to reach a practical definition of labor abnormalities. Finally, research regarding the complex labor process may benefit from new approaches, such as machine learning technologies and artificial intelligence to improve the predictability of successful vaginal delivery with normal perinatal outcomes.
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Affiliation(s)
- Xiaoqing He
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China; Ministry of Education -Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaojing Zeng
- Ministry of Education -Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - James Troendle
- Office of Biostatistics Research, Division of Intramural Research, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
| | - Maria Ahlberg
- Clinical Epidemiology Division, Department of Medicine, Solna, Karolinska Institute, Stockholm, Sweden
| | - Ellen L Tilden
- Department of Obstetrics and Gynecology, School of Medicine, Department of Nurse-Midwifery, School of Nursing, Oregon Health & Science University, Portland, OR
| | - João Paulo Souza
- Department of Social Medicine, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Stine Bernitz
- Department of Obstetrics and Gynaecology, Østfold Hospital Trust, Grålum, Norway; Department of Health Promotion, Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway
| | - Tao Duan
- Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - Olufemi T Oladapo
- United Nations Development Programme/United Nations Population Fund/ United Nations Children's Fund/World Health Organization/World Bank Special Programme of Research, Development and Research Training in Human Reproduction, Department of Reproductive Health and Research, World Health Organization, Geneva, Switzerland
| | - William Fraser
- Department of Obstetrics and Gynecology, Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Canada
| | - Jun Zhang
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China; Ministry of Education -Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Dall'Asta A, Ramirez Zegarra R, Corno E, Mappa I, Lu JLA, Di Pasquo E, Morganelli G, Abou‐Dakn M, Germano C, Attini R, Masturzo B, Rizzo G, Ghi T. Role of fetal head-circumference-to-maternal-height ratio in predicting Cesarean section for labor dystocia: prospective multicenter study. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2023; 61:93-98. [PMID: 35767709 PMCID: PMC10107777 DOI: 10.1002/uog.24981] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 06/01/2022] [Accepted: 06/16/2022] [Indexed: 05/27/2023]
Abstract
OBJECTIVE To evaluate the relationship between the fetal head-circumference-to-maternal-height (HC/MH) ratio measured shortly before delivery and the occurrence of Cesarean section (CS) for labor dystocia. METHODS This was a multicenter prospective cohort study involving four tertiary maternity hospitals. An unselected cohort of women with a singleton fetus in cephalic presentation, at a gestational age beyond 36 + 0 weeks and without any contraindication for vaginal delivery, was enrolled between September 2020 and November 2021. The MH and fetal HC were measured on admission of the patient to the labor ward. The primary outcome of the study was the performance of the HC/MH ratio in the prediction of CS for labor dystocia. Women who underwent CS for any indication other than failed labor progression, including fetal distress, were excluded from the final analysis. RESULTS A total of 783 women were included in the study. Vaginal delivery occurred in 744 (95.0%) women and CS for labor dystocia in 39 (5.0%). CS for labor dystocia was associated with shorter MH (mean ± SD, 160.4 ± 6.6 vs 164.5 ± 6.3 cm; P < 0.001), larger fetal HC (339.6 ± 9.5 vs 330.7 ± 13.0 mm; P < 0.001) and a higher HC/MH ratio (2.12 ± 0.11 vs 2.01 ± 0.10; P < 0.001) compared with vaginal delivery. Multivariate logistic regression analysis showed that the HC/MH ratio was associated independently with CS for labor dystocia (adjusted odds ratio, 2.65 (95% CI, 1.85-3.79); P < 0.001). The HC/MH ratio had an area under the receiver-operating-characteristics curve of 0.77 and an optimal cut-off value for discriminating between vaginal delivery and CS for labor dystocia of 2.09, which was associated with a sensitivity of 0.62 (95% CI, 0.45-0.77), specificity of 0.79 (95% CI, 0.76-0.82), positive predictive value of 0.13 (95% CI, 0.09-0.19) and negative predictive value of 0.98 (95% CI, 0.96-0.99). CONCLUSIONS In a large cohort of unselected pregnancies, the HC/MH ratio performed better than did fetal HC and MH alone in identifying those cases that will undergo CS for labor dystocia, albeit with moderate predictive value. The HC/MH ratio could assist in the evaluation of women at risk for CS for labor dystocia. © 2022 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- A. Dall'Asta
- Department of Medicine and Surgery, Obstetrics and Gynecology UnitUniversity of ParmaParmaItaly
| | - R. Ramirez Zegarra
- Department of Medicine and Surgery, Obstetrics and Gynecology UnitUniversity of ParmaParmaItaly
- Department of Obstetrics and GynecologySt Joseph KrankenhausBerlinGermany
| | - E. Corno
- Department of Medicine and Surgery, Obstetrics and Gynecology UnitUniversity of ParmaParmaItaly
| | - I. Mappa
- Department of Obstetrics and Gynecology, Fondazione Policlinico Tor VergataUniversity of Rome Tor VergataRomeItaly
| | - J. L. A. Lu
- Department of Obstetrics and Gynecology, Fondazione Policlinico Tor VergataUniversity of Rome Tor VergataRomeItaly
| | - E. Di Pasquo
- Department of Medicine and Surgery, Obstetrics and Gynecology UnitUniversity of ParmaParmaItaly
| | - G. Morganelli
- Department of Medicine and Surgery, Obstetrics and Gynecology UnitUniversity of ParmaParmaItaly
| | - M. Abou‐Dakn
- Department of Obstetrics and GynecologySt Joseph KrankenhausBerlinGermany
| | - C. Germano
- Department of Obstetrics and Gynecology, Sant'Anna HospitalUniversity of TurinTurinItaly
| | - R. Attini
- Department of Obstetrics and Gynecology, Sant'Anna HospitalUniversity of TurinTurinItaly
| | - B. Masturzo
- Department of Obstetrics and Gynecology, Sant'Anna HospitalUniversity of TurinTurinItaly
| | - G. Rizzo
- Department of Obstetrics and Gynecology, Fondazione Policlinico Tor VergataUniversity of Rome Tor VergataRomeItaly
| | - T. Ghi
- Department of Medicine and Surgery, Obstetrics and Gynecology UnitUniversity of ParmaParmaItaly
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Malvasi A, Vinciguerra M, Lamanna B, Cascardi E, Damiani GR, Muzzupapa G, Kosmas I, Beck R, Falagario M, Vimercati A, Cicinelli E, Trojano G, Tinelli A, Cazzato G, Dellino M. Asynclitism and Its Ultrasonographic Rediscovery in Labor Room to Date: A Systematic Review. Diagnostics (Basel) 2022; 12:2998. [PMID: 36553005 PMCID: PMC9776610 DOI: 10.3390/diagnostics12122998] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/08/2022] [Accepted: 11/14/2022] [Indexed: 12/03/2022] Open
Abstract
Asynclitism, the most feared malposition of the fetal head during labor, still represents to date an unresolved field of interest, remaining one of the most common causes of prolonged or obstructed labor, dystocia, assisted delivery, and cesarean section. Traditionally asynclitism is diagnosed by vaginal examination, which is, however, burdened by a high grade of bias. On the contrary, the recent scientific evidence highly suggests the use of intrapartum ultrasonography, which would be more accurate and reliable when compared to the vaginal examination for malposition assessment. The early detection and characterization of asynclitism by intrapartum ultrasound would become a valid tool for intrapartum evaluation. In this way, it will be possible for physicians to opt for the safest way of delivery according to an accurate definition of the fetal head position and station, avoiding unnecessary operative procedures and medication while improving fetal and maternal outcomes. This review re-evaluated the literature of the last 30 years on asynclitism, focusing on the progressive imposition of ultrasound as an intrapartum diagnostic tool. All the evidence emerging from the literature is presented and evaluated from our point of view, describing the most employed technique and considering the future implication of the progressive worldwide consolidation of asynclitism and ultrasound.
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Affiliation(s)
- Antonio Malvasi
- Unit of Obstetrics and Gynaecology, Department of Biomedical Sciences and Human Oncology, 70124 Bari, Italy
| | - Marina Vinciguerra
- Unit of Obstetrics and Gynaecology, Department of Biomedical Sciences and Human Oncology, 70124 Bari, Italy
- Department of Maternal and Child Health, Madonna delle Grazie Hospital, 75100 Matera, Italy
| | - Bruno Lamanna
- Unit of Obstetrics and Gynaecology, Department of Biomedical Sciences and Human Oncology, 70124 Bari, Italy
- Fetal Medicine Research Institute, King’s College Hospital, London SE5 9RS, UK
| | - Eliano Cascardi
- Department of Medical Sciences, University of Turin, 10126 Torino, Italy
- Pathology Unit, FPO-IRCCS Candiolo Cancer Institute, Str. Provinciale 142 km 3.95, 10060 Candiolo, Italy
| | - Gianluca Raffaello Damiani
- Unit of Obstetrics and Gynaecology, Department of Biomedical Sciences and Human Oncology, 70124 Bari, Italy
| | - Giuseppe Muzzupapa
- Unit of Obstetrics and Gynaecology, Department of Biomedical Sciences and Human Oncology, 70124 Bari, Italy
| | - Ioannis Kosmas
- Department of Obstetrics and Gynecology, Ioannina State General Hospital G. Chatzikosta, 45332 Ioannina, Greece
| | - Renata Beck
- Department of Anesthesia and Intensive Care, Policlinico Riuniti Hospital, University of Foggia, 71122 Foggia, Italy
| | - Maddalena Falagario
- Unit of Obstetrics and Gynaecology, Department of Biomedical Sciences and Human Oncology, 70124 Bari, Italy
- Department of Obstetric and Gynecology, Lund University, SE-221 00 Lund, Sweden
| | - Antonella Vimercati
- Unit of Obstetrics and Gynaecology, Department of Biomedical Sciences and Human Oncology, 70124 Bari, Italy
| | - Ettore Cicinelli
- Unit of Obstetrics and Gynaecology, Department of Biomedical Sciences and Human Oncology, 70124 Bari, Italy
| | - Giuseppe Trojano
- Unit of Obstetrics and Gynaecology, Department of Biomedical Sciences and Human Oncology, 70124 Bari, Italy
| | - Andrea Tinelli
- Department of Obstetrics and Gynecology and CERICSAL (CEntro di RIcerca Clinico SALentino), Veris Delli Ponti Hospital, 73020 Scorrano, Italy
- Division of Experimental Endoscopic Surgery, Imaging, Technology and Minimally Invasive Therapy, Vito Fazzi Hospital, 73100 Lecce, Italy
| | - Gerardo Cazzato
- Section of Pathology, Department of Emergency and Organ Transplantation (DETO), University of Bari “Aldo Moro”, 70124 Bari, Italy
| | - Miriam Dellino
- Unit of Obstetrics and Gynaecology, Department of Biomedical Sciences and Human Oncology, 70124 Bari, Italy
- Department of Obstetrics and Gynecology, San Paolo Hospital, 70124 Bari, Italy
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Dall'Asta A, Rizzo G, Masturzo B, Di Pasquo E, Schera GBL, Morganelli G, Ramirez Zegarra R, Maqina P, Mappa I, Parpinel G, Attini R, Roletti E, Menato G, Frusca T, Ghi T. Intrapartum sonographic assessment of the fetal head flexion in protracted active phase of labor and association with labor outcome: a multicenter, prospective study. Am J Obstet Gynecol 2021; 225:171.e1-171.e12. [PMID: 33675795 DOI: 10.1016/j.ajog.2021.02.035] [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] [Received: 12/01/2020] [Revised: 02/26/2021] [Accepted: 02/26/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND To date, no research has focused on the sonographic quantification of the degree of flexion of the fetal head in relation to the labor outcome in women with protracted active phase of labor. OBJECTIVE This study aimed to assess the relationship between the transabdominal sonographic indices of fetal head flexion and the mode of delivery in women with protracted active phase of labor. STUDY DESIGN Prospective evaluation of women with protracted active phase of labor recruited across 3 tertiary maternity units. Eligible cases were submitted to transabdominal ultrasound for the evaluation of the fetal head position and flexion, which was measured by means of the occiput-spine angle in fetuses in nonocciput posterior position and by means of the chin-to-chest angle in fetuses in occiput posterior position. The occiput-spine angle and the chin-to-chest angle were compared between women who had vaginal delivery and those who had cesarean delivery. Cases where obstetrical intervention was performed solely based on suspected fetal distress were excluded. RESULTS A total of 129 women were included, of whom 43 (33.3%) had occiput posterior position. Spontaneous vaginal delivery, instrumental delivery, and cesarean delivery were recorded in 66 (51.2%), 17 (13.1%), and 46 (35.7%) cases, respectively. A wider occiput-spine angle was measured in women who had vaginal delivery compared with those submitted to cesarean delivery owing to labor dystocia (126±14 vs 115±24; P<.01). At the receiver operating characteristic curve, the area under the curve was 0.675 (95% confidence interval, 0.538-0.812; P<.01), and the optimal occiput-spine angle cutoff value discriminating between cases of vaginal delivery and those delivered by cesarean delivery was 109°. A narrower chin-to-chest angle was measured in cases who had vaginal delivery compared with those undergoing cesarean delivery (27±33 vs 56±28 degrees; P<.01). The area under the curve of the chin-to-chest angle in relation to the mode of delivery was 0.758 (95% confidence interval, 0.612-0.904; P<.01), and the optimal cutoff value discriminating between vaginal delivery and cesarean delivery was 33.0°. CONCLUSION In women with protracted active phase of labor, the sonographic demonstration of fetal head deflexion in occiput posterior and in nonocciput posterior fetuses is associated with an increased incidence of cesarean delivery owing to labor dystocia. Such findings suggest that intrapartum ultrasound may contribute in the categorization of the etiology of labor dystocia.
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Affiliation(s)
- Andrea Dall'Asta
- Obstetrics and Gynecology Unit, Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Giuseppe Rizzo
- Division of Maternal and Fetal Medicine, Department of Obstetrics and Gynecology, Cristo Re Hospital, University of Rome Tor Vergata, Rome, Italy; Department of Obstetrics and Gynecology, I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Bianca Masturzo
- Department of Obstetrics and Gynecology, Sant'Anna Hospital, University of Turin, Turin, Italy
| | - Elvira Di Pasquo
- Obstetrics and Gynecology Unit, Department of Medicine and Surgery, University of Parma, Parma, Italy
| | | | - Giovanni Morganelli
- Obstetrics and Gynecology Unit, Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Ruben Ramirez Zegarra
- Obstetrics and Gynecology Unit, Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Pavjola Maqina
- Division of Maternal and Fetal Medicine, Department of Obstetrics and Gynecology, Cristo Re Hospital, University of Rome Tor Vergata, Rome, Italy
| | - Ilenia Mappa
- Division of Maternal and Fetal Medicine, Department of Obstetrics and Gynecology, Cristo Re Hospital, University of Rome Tor Vergata, Rome, Italy
| | - Giulia Parpinel
- Department of Obstetrics and Gynecology, Sant'Anna Hospital, University of Turin, Turin, Italy
| | - Rossella Attini
- Department of Obstetrics and Gynecology, Sant'Anna Hospital, University of Turin, Turin, Italy
| | - Enrica Roletti
- Obstetrics and Gynecology Unit, Department of Medicine and Surgery, University of Parma, Parma, Italy; Department of Obstetrics and Gynecology, Sant'Anna Hospital, University of Turin, Turin, Italy
| | - Guido Menato
- Department of Obstetrics and Gynecology, Sant'Anna Hospital, University of Turin, Turin, Italy
| | - Tiziana Frusca
- Obstetrics and Gynecology Unit, Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Tullio Ghi
- Obstetrics and Gynecology Unit, Department of Medicine and Surgery, University of Parma, Parma, Italy.
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Gimovsky AC. Intrapartum ultrasound for the diagnosis of cephalic malpositions and malpresentations. Am J Obstet Gynecol MFM 2021; 3:100438. [PMID: 34302995 DOI: 10.1016/j.ajogmf.2021.100438] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 06/22/2021] [Accepted: 06/25/2021] [Indexed: 11/17/2022]
Abstract
Fetuses with malpresentation and malposition during labor represent important clinical challenges. Women with fetuses presenting with malpresentation or malposition are at risk of increased perinatal complications, such as cesarean delivery, failure of operative vaginal delivery, neonatal acidemia, and neonatal intensive care admission. Intrapartum ultrasound has been found to be more reliable than digital examination in assessing malpresentation and malposition. The use of intrapartum ultrasound to assess fetal position and presentation, in addition to fetal attitude, to predict and aid in decision making regarding delivery can help in improving management decision making. Cephalic malpresentation and malposition is a unique subset of fetal orientation and can benefit from intrapartum ultrasound identification and assessment for delivery.
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Affiliation(s)
- Alexis C Gimovsky
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Women & Infants Hospital of Rhode Island, Alpert Medical School of Brown University, Providence, RI.
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Youssef A, Brunelli E, Azzarone C, Di Donna G, Casadio P, Pilu G. Fetal head progression and regression on maternal pushing at term and labor outcome. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2021; 58:105-110. [PMID: 32730691 DOI: 10.1002/uog.22159] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 07/13/2020] [Accepted: 07/22/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVES The aim of our study was two-fold. First, to evaluate the association between the change in the angle of progression (AoP) on maternal pushing and labor outcome. Second, to assess the incidence and clinical significance of the reduction of AoP on maternal pushing. METHODS This was a prospective cohort study of nulliparous women with singleton pregnancy at term. AoP was measured at rest and on maximum Valsalva maneuver before the onset of labor, and the difference between AoP on maximum Valsalva and that at rest (ΔAoP) was calculated for each woman. Following delivery and data collection, we assessed the association between ΔAoP and various labor outcomes, including Cesarean section (CS), duration of the first, second and active second stages of labor, Apgar score and admission to the neonatal intensive care unit (NICU). The prevalence of women with reduction of AoP on maximum Valsalva maneuver (AoP-regression group) was calculated and its association with the mode of delivery and duration of different stages of labor was assessed. RESULTS Overall, 469 women were included in the analysis. Among these, 273 (58.2%) had spontaneous vaginal birth, 65 (13.9%) had instrumental delivery and 131 (27.9%) underwent CS. Women in the CS group were older, had narrower AoP at rest and on maximum Valsalva, higher rate of epidural administration and lower 1-min and 5-min Apgar scores in comparison with the vaginal-delivery group. ΔAoP was comparable between the two groups. On Pearson's correlation analysis, AoP at rest and on maximum Valsalva maneuver had a significant negative correlation with the duration of the first stage of labor. ΔAoP showed a significant negative correlation with the duration of the active second stage of labor (Pearson's r, -0.125; P = 0.02). Cox regression model analysis showed that ΔAoP was associated independently with the duration of the active second stage (hazard ratio, 1.014 (95% CI, 1.003-1.025); P = 0.012) after adjusting for maternal age and body mass index. AoP reduction on maximum Valsalva was found in 73 (15.6%) women. In comparison with women who showed no change or an increase in AoP on maximum Valsalva, the AoP-regression group did not demonstrate significant difference in maternal characteristics, mode of delivery, rate of epidural analgesia, duration of the different stages of labor or rate of NICU admission. CONCLUSIONS In nulliparous women at term before the onset of labor, narrower AoP at rest and on maximum Valsalva, reflecting fetal head engagement, is associated with a higher risk of Cesarean delivery. The increase in AoP from rest to Valsalva, reflecting more efficient maternal pushing, is associated with a shorter active second stage of labor. Fetal head regression on maternal pushing is present in about 16% of women and does not appear to have clinical significance. © 2020 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- A Youssef
- Department of Obstetrics and Gynecology, IRCCS, Sant'Orsola Malpighi University Hospital, University of Bologna, Bologna, Italy
| | - E Brunelli
- Department of Obstetrics and Gynecology, IRCCS, Sant'Orsola Malpighi University Hospital, University of Bologna, Bologna, Italy
| | - C Azzarone
- Department of Obstetrics and Gynecology, IRCCS, Sant'Orsola Malpighi University Hospital, University of Bologna, Bologna, Italy
| | - G Di Donna
- Department of Obstetrics and Gynecology, IRCCS, Sant'Orsola Malpighi University Hospital, University of Bologna, Bologna, Italy
| | - P Casadio
- Department of Obstetrics and Gynecology, IRCCS, Sant'Orsola Malpighi University Hospital, University of Bologna, Bologna, Italy
| | - G Pilu
- Department of Obstetrics and Gynecology, IRCCS, Sant'Orsola Malpighi University Hospital, University of Bologna, Bologna, Italy
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Hung CMW, Chan VYT, Ghi T, Lau W. Asynclitism in the second stage of labor: prevalence, associations, and outcome. Am J Obstet Gynecol MFM 2021; 3:100437. [PMID: 34217855 DOI: 10.1016/j.ajogmf.2021.100437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 06/23/2021] [Accepted: 06/25/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND Fetal head asynclitism may affect labor progress, increase the need for obstetrical intervention, and even be associated with difficult or failed instrumental delivery. However, there is limited evidence on the true prevalence and associations of asynclitism when diagnosed by transperineal ultrasound in the second stage of labor. OBJECTIVE This study aimed to examine the prevalence and outcome of asynclitism in the second stage of labor in a regional hospital in Hong Kong. STUDY DESIGN This is a prospective cohort study involving 92 term nulliparous women with singleton pregnancy in the second stage of labor, recruited from December 2019 to December 2020. Transperineal ultrasound was performed and asynclitism was diagnosed if there was asymmetry of intracranial structures on the transverse plane. To assess the fetal head station, the head perineum distance was measured at rest and on pushing, and the mode of delivery was recorded. Relationship between asynclitism and fetal head position, and between head perineum distance and the mode of delivery, were evaluated with chi-squared tests and Mann-Whitney U tests. RESULTS The prevalence of asynclitism was 15% (14 of 92), of which 12 were anterior asynclitism and 2 were posterior asynclitism. The prevalence of asynclitism was less common in occiput anterior compared with nonocciput anterior position (6.7% vs 53%, P<.01). Women with asynclitism were associated with smaller delta head perineum distance (head perineum distance at rest minus that at pushing) than women without asynclitism (median [interquartile range], 0.68 cm [0.85 cm] vs 0.91 cm [0.71 cm]; P=.01). Eventually, there was a trend of more operative deliveries in women with asynclitism (43%, or 6 of 14 women) than in women without asynclitism (27%, or 21 of 78 women), although this difference was not statistically significant (P=.22). CONCLUSION The prevalence of asynclitism at transperineal ultrasound was rather common in nulliparous women at second stage of labor and seemed more commonly associated with nonocciput anterior position.
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Affiliation(s)
- Catherine M W Hung
- Department of Obstetrics and Gynecology, Kwong Wah Hospital, Hong Kong SAR, China (Drs Hung, Chan, and Lau).
| | - Viola Y T Chan
- Department of Obstetrics and Gynecology, Kwong Wah Hospital, Hong Kong SAR, China (Drs Hung, Chan, and Lau)
| | - Tullio Ghi
- Department of Medicine and Surgery, University of Parma, Parma, Italy (Prof Ghi)
| | - Wailam Lau
- Department of Obstetrics and Gynecology, Kwong Wah Hospital, Hong Kong SAR, China (Drs Hung, Chan, and Lau)
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10
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Chan YTV, Lau KW, Hui W, Lau CH, Leung WC, Lau WL. Sonographic measurement of cervical length and head perineum distance before labor to predict time of delivery. J Matern Fetal Neonatal Med 2021; 35:4905-4909. [PMID: 33455498 DOI: 10.1080/14767058.2021.1873264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVES This was an observational study on cervical length and head perineum distance and the prediction of time of delivery. One-hundred and twenty-five nulliparous women with uncomplicated, term, singleton pregnancy were recruited when they presented to the labor ward with show or infrequent painful uterine contractions (less than three contractions in ten minutes on a 30 min cardiotocogram). Apart from digital vaginal examination to assess cervical length and dilatation, sonographic cervical length and head perineum distance were measured by two-dimensional ultrasound. We compared women who delivered within 72 h of presentation of labor symptoms, with women who did not. After excluding ten women whose labor was induced and delivered within 72 h of presentation, one hundred and fifteen women were included for final data analysis. MAIN FINDINGS Forty-nine women (42.6%) delivered while sixty-six women (57.4%) remained undelivered at 72 h of presentation of symptoms of labor. There was no statistically significant difference between the two groups on age, presence of show, contractions, fetal head station and presentation and mode of delivery. For the group who had delivered within 72 h of presentation of labor symptoms, the mean sonographic cervical length was 1.87 cm ± 0.62 cm, while the head perineum distance was 6.01 cm ± 1.15 cm. For the other group, the mean sonographic cervical length was 2.10 cm ± 0.83 cm; head perineum distance was 6.03 cm ± 1.18 cm. There was no statistically significant difference between the groups for both sonographic cervical length (p = .90); and head perineum distance (p = .08). We also compared the cervical length measured by digital vaginal examination versus sonography. The median sonographic measurements were 1.47 cm, 2.11 cm and 2.79 cm at "1 cm," "2 cm" and "3 cm" digital vaginal measurement, respectively. However, there was extensive overlap between digitally and sonographically measured cervical length. Prediction accuracy of cervical length and head perineum distance was poor. The area under curve (AUC) of receiver operating characteristic (ROC) curve were 0.433 for sonographic cervical length and 0.501 for HPD. CONCLUSION Transperineal sonographical assessment of cervical length and head perineum distance before labor was not useful in predicting the time of delivery. However, it can be explored as an alternative assessment method when digital vaginal examination is not preferred.
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Affiliation(s)
- Ying Tze Viola Chan
- Department of Obstetrics and Gynaecology, Kwong Wah Hospital, Kowloon, China
| | - Ka Wing Lau
- Department of Obstetrics and Gynaecology, Kwong Wah Hospital, Kowloon, China
| | - Winnie Hui
- Department of Obstetrics and Gynaecology, Pamela Youde Nethersole Eastern Hospital, Chai Wan, China
| | - Chin Ho Lau
- Department of Obstetrics and Gynaecology, Kwong Wah Hospital, Kowloon, China
| | - Wing Cheong Leung
- Department of Obstetrics and Gynaecology, Kwong Wah Hospital, Kowloon, China
| | - Wai Lam Lau
- Department of Obstetrics and Gynaecology, Kwong Wah Hospital, Kowloon, China
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Vlasyuk V, Malvasi A. The importance of asynclitism in birth trauma and intrapartum sonography. J Matern Fetal Neonatal Med 2020; 35:2188-2194. [PMID: 32538217 DOI: 10.1080/14767058.2020.1777270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Asynclitism is malposition and malpresentation of the head in the pelvis. It is shown that asynclitism during the configuration (molding) of the head leads to an uneven distribution of the tension forces of the tentorium cerebelli (TC) and to its one-sided ruptures, mainly in the left half. It is indicated that with asynclitism larger more than 15 mm (moderate degree of asynclitism), the risk of birth trauma to the skull and brain increases. It was shown that not only severe degree of asynclitism, but also a moderate degree are pathological due to possible complications. The data on the sonographic diagnosis of asynclitism are presented. The negative effects of vacuum extraction (VE), the forceps application are considered. The mechanism of subaponeurotic hemorrhages is described. The importance of timely asynclitism diagnosis in labor to prevent its complication is shown. The cesarean section is practiced as extreme solution to the problem. The widespread use of sonography for the asynclitism diagnosis will prevent the birth trauma and reduce the incidence of mobility and mortality of the children and mother.
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Affiliation(s)
- Vasily Vlasyuk
- Department of Forensic Medicine, S. M. Kirov Military Medical Academy, St Petersburg, Russia
| | - Antonio Malvasi
- Department of Obstetrics and Gynecology, Santa Maria Hospital, GVM Care and Research, Bari, Italy.,Department of Applied Mathematics, Moscow Institute of Physics and Technology (State University), International Translational Medicine and Biomodelling Research Group, Moscow, Russia
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12
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Bellussi F, Pilu G. Reply. Am J Obstet Gynecol 2018; 218:541-542. [PMID: 29409953 DOI: 10.1016/j.ajog.2018.01.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 01/23/2018] [Indexed: 10/18/2022]
Affiliation(s)
- Federica Bellussi
- Department of Obstetrics and Gynecology, Clinica Ostetrica e Ginecologica, University of Bologna, Policlinico S. Orsola-Malpighi, Via Massarenti 13, 40138 Bologna.
| | - Gianluigi Pilu
- Department of Obstetrics and Gynecology, Clinica Ostetrica e Ginecologica, University of Bologna, Policlinico S. Orsola-Malpighi, Via Massarenti 13, 40138 Bologna
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The use of intrapartum ultrasound to diagnose malpositions and cephalic malpresentations. Am J Obstet Gynecol 2017; 217:633-641. [PMID: 28743440 DOI: 10.1016/j.ajog.2017.07.025] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Revised: 07/17/2017] [Accepted: 07/18/2017] [Indexed: 01/21/2023]
Abstract
Fetal malpositions and cephalic malpresentations are well-recognized causes of failure to progress in labor. They frequently require operative delivery, and are associated with an increased probability of fetal and maternal complications. Traditional obstetrics emphasizes the role of digital examinations, but recent studies demonstrated that this approach is inaccurate and intrapartum ultrasound is far more precise. The objective of this review is to summarize the current body of literature and provide recommendations to identify malpositions and cephalic malpresentations with ultrasound. We propose a systematic approach consisting of a combination of transabdominal and transperineal scans and describe the findings that allow an accurate diagnosis of normal and abnormal position, flexion, and synclitism of the fetal head. The management of malpositions and cephalic malpresentation is currently a matter of debate, and individualized depending on the general clinical picture and expertise of the provider. Intrapartum sonography allows a precise diagnosis and therefore offers the best opportunity to design prospective studies with the aim of establishing evidence-based treatment. The article is accompanied by a video that demonstrates the sonographic technique and findings.
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Salsi G, Cataneo I, Dodaro G, Rizzo N, Pilu G, Sanz Gascón M, Youssef A. Three-dimensional/four-dimensional transperineal ultrasound: clinical utility and future prospects. Int J Womens Health 2017; 9:643-656. [PMID: 28979167 PMCID: PMC5602462 DOI: 10.2147/ijwh.s103789] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
During the last decade, there has been a huge advancement in the use of transperineal ultrasound (TPU) in the field of obstetrics and gynecology. Its main applications in obstetrics include the monitoring of fetal progression in labor and recently the assessment of maternal pelvic dimensions, whereas in gynecology, TPU is at present widely used for the evaluation of the female pelvic floor, opening new boundaries for the assessment of pelvic floor disorders. The association of volumetric three-dimensional techniques has largely contributed to the remarkable progress that has occurred in the use of TPU. The aim of this paper is to offer an overview of the advantages, challenges and future perspectives of the use of TPU for women’s imaging.
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Affiliation(s)
- Ginevra Salsi
- Department of Obstetrics and Gynecology, Sant'Orsola-Malpighi University Hospital, University of Bologna, Bologna, Italy
| | - Ilaria Cataneo
- Department of Obstetrics and Gynecology, Sant'Orsola-Malpighi University Hospital, University of Bologna, Bologna, Italy
| | - Gaia Dodaro
- Department of Obstetrics and Gynecology, Sant'Orsola-Malpighi University Hospital, University of Bologna, Bologna, Italy
| | - Nicola Rizzo
- Department of Obstetrics and Gynecology, Sant'Orsola-Malpighi University Hospital, University of Bologna, Bologna, Italy
| | - Gianluigi Pilu
- Department of Obstetrics and Gynecology, Sant'Orsola-Malpighi University Hospital, University of Bologna, Bologna, Italy
| | - Mar Sanz Gascón
- Department of Obstetrics and Gynecology, La Fé University Hospital, University of Valencia.,Prenatal Diagnosis Unit, Casa del Salud University Hospital, Valencia, Spain
| | - Aly Youssef
- Department of Obstetrics and Gynecology, Sant'Orsola-Malpighi University Hospital, University of Bologna, Bologna, Italy
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15
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Ghi T, Dall'Asta A, Kiener A, Volpe N, Suprani A, Frusca T. Intrapartum diagnosis of posterior asynclitism using two-dimensional transperineal ultrasound. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2017; 49:803-804. [PMID: 27619356 DOI: 10.1002/uog.17302] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 08/25/2016] [Accepted: 09/03/2016] [Indexed: 06/06/2023]
Affiliation(s)
- T Ghi
- Department of Surgical Sciences, Obstetrics and Gynaecology Unit, University of Parma, Parma, Italy
| | - A Dall'Asta
- Department of Surgical Sciences, Obstetrics and Gynaecology Unit, University of Parma, Parma, Italy
| | - A Kiener
- Department of Surgical Sciences, Obstetrics and Gynaecology Unit, University of Parma, Parma, Italy
| | - N Volpe
- Department of Surgical Sciences, Obstetrics and Gynaecology Unit, University of Parma, Parma, Italy
| | - A Suprani
- Department of Surgical Sciences, Obstetrics and Gynaecology Unit, University of Parma, Parma, Italy
| | - T Frusca
- Department of Surgical Sciences, Obstetrics and Gynaecology Unit, University of Parma, Parma, Italy
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Malvasi A, Tinelli A. Intrapartum sonography asynclitism diagnosis by transperineal ultrasonography. J Matern Fetal Neonatal Med 2017; 31:1530-1531. [DOI: 10.1080/14767058.2017.1319927] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Antonio Malvasi
- Department of Obstetric & Gynecology, Santa Maria Hospital, GVM Care & Research, Bari, Italy
- The International Translational Medicine and Biomodelling Research Group, Department of Applied Mathematics, Moscow Institute of Physics and Technology (State University), Moscow Region, Russia
- Department of Obstetrics and Gynecology, Division of Experimental Endoscopic Surgery, Imaging, Technology and Minimally Invasive Therapy, Vito Fazzi Hospital, Lecce, Italy
| | - Andrea Tinelli
- Department of Obstetric & Gynecology, Santa Maria Hospital, GVM Care & Research, Bari, Italy
- The International Translational Medicine and Biomodelling Research Group, Department of Applied Mathematics, Moscow Institute of Physics and Technology (State University), Moscow Region, Russia
- Department of Obstetrics and Gynecology, Division of Experimental Endoscopic Surgery, Imaging, Technology and Minimally Invasive Therapy, Vito Fazzi Hospital, Lecce, Italy
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17
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Youssef A, Salsi G, Cataneo I, Martelli F, Azzarone C, Bellussi F, Ghi T, Pilu G, Rizzo N. Agreement between two 3D ultrasound techniques for the assessment of the subpubic arch angle. J Matern Fetal Neonatal Med 2016; 30:1-5. [PMID: 27050886 DOI: 10.1080/14767058.2016.1175000] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVES To assess the reliability of a new three-dimensional (3D) ultrasound technique for the measurement of the subpubic arch angle (SPA) and the agreement between two contrast-enhancing 3D ultrasound techniques. METHODS We acquired two static 3D transperineal volumes from 72 nulliparous women using two ultrasound machines equipped with two different 3D contrast enhancement and linear reconstruction softwares: 1. Oblique View Extended Imaging with HD-Volume Imaging (OVIX-HDVI™), Samsung; 2. Omniview with Volume Contrast Imaging (Omniview-VCI™), GE Healthcare. An operator measured SPA once by OVIX-HDVI, and twice by Omniview-VCI, while another operator measured SPA once by Omniview-VCI. We evaluated intra- and inter-observer reproducibility of Omniview-VCI and intermethod agreement. Reproducibility and intermethod agreement were studied by means of intraclass correlation coefficient (ICC) and Bland-Altman method. RESULTS Omniview-VCI SPA measurements showed excellent intraobserver and interobserver reproducibility (ICC 0.970; 95% C.I. 0.952 to 0.981, 0.932; 95% C.I. 0.893 to 0.957, respectively). Furthermore, Omniview VCI SPA measurements demonstrated excellent agreement with those performed by OVIX-HDVI technique (ICC 0.943; 95 C.I. 0.911 to 0.964). No systematic difference was found in any of the reliability studies. CONCLUSIONS OmniView-VCI is a reliable method for SPA assessment. Both OmniView-VCI and OVIX-HDVI can be used interchangeably for SPA measurement.
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Affiliation(s)
- Aly Youssef
- a Department of Obstetrics and Gynecology , Sant'Orsola-Malpighi Hospital, University of Bologna , Bologna , Italy
| | - Ginevra Salsi
- a Department of Obstetrics and Gynecology , Sant'Orsola-Malpighi Hospital, University of Bologna , Bologna , Italy
| | - Ilaria Cataneo
- a Department of Obstetrics and Gynecology , Sant'Orsola-Malpighi Hospital, University of Bologna , Bologna , Italy
| | - Federica Martelli
- b Department of Obstetrics and Gynecology , Tor Vergata University , Rome , Italy , and
| | - Carlotta Azzarone
- a Department of Obstetrics and Gynecology , Sant'Orsola-Malpighi Hospital, University of Bologna , Bologna , Italy
| | - Federica Bellussi
- a Department of Obstetrics and Gynecology , Sant'Orsola-Malpighi Hospital, University of Bologna , Bologna , Italy
| | - Tullio Ghi
- c Department of Obstetrics and Gynecology , University of Parma , Parma , Italy
| | - Gianluigi Pilu
- a Department of Obstetrics and Gynecology , Sant'Orsola-Malpighi Hospital, University of Bologna , Bologna , Italy
| | - Nicola Rizzo
- a Department of Obstetrics and Gynecology , Sant'Orsola-Malpighi Hospital, University of Bologna , Bologna , Italy
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Eggebø TM, Hassan WA, Salvesen KÅ, Torkildsen EA, Østborg TB, Lees CC. Prediction of delivery mode by ultrasound-assessed fetal position in nulliparous women with prolonged first stage of labor. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2015; 46:606-610. [PMID: 25536955 DOI: 10.1002/uog.14773] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Revised: 09/22/2014] [Accepted: 12/16/2014] [Indexed: 06/04/2023]
Abstract
OBJECTIVES To ascertain if fetal head position on transabdominal ultrasound is associated with delivery by Cesarean section in nulliparous women with a prolonged first stage of labor. METHODS This was a prospective observational study performed at Stavanger University Hospital, Norway, and Addenbrooke's Hospital, Cambridge, UK, between January 2012 and April 2013. Nulliparous pregnant women with a singleton cephalic presentation at term and prolonged labor had fetal head position assessed by ultrasound. The main outcome was Cesarean section vs vaginal delivery, and secondary outcomes were association of fetal head position with operative vaginal delivery and duration of remaining time in labor. RESULTS Fetal head position was assessed successfully by ultrasound examination in 142/150 (95%) women. In total, 19/50 (38%) women with a fetus in the occiput posterior (OP) position were delivered by Cesarean section compared with 16/92 (17%) women with a fetus in a non-OP position (P = 0.01). On multivariable logistic regression analysis, the OP position predicted delivery by Cesarean section with an odds ratio (OR) of 2.9 (95% CI, 1.3-6.7; P = 0.01) and induction of labor with an OR of 2.4 (95% CI, 1.0-5.6; P = 0.05). Fetal head position was not associated with operative vaginal delivery or with remaining time in labor. The agreement between a digital and an ultrasound assessment of OP position was poor (Cohen's kappa = 0.19; P = 0.18). CONCLUSION OP fetal head position assessed by transabdominal ultrasound was significantly associated with delivery by Cesarean section.
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Affiliation(s)
- T M Eggebø
- Department of Obstetrics and Gynecology, Stavanger University Hospital, Stavanger, Norway
- National Center for Fetal Medicine, Trondheim University Hospital (St Olavs Hospital), Trondheim, Norway
| | - W A Hassan
- Fetal Medicine Department, Rosie Maternity Hospital, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - K Å Salvesen
- Department of Obstetrics and Gynaecology, Clinical Sciences, Lund University, Lund, Sweden
- Department of Laboratory Medicine, Children's and Women's Health, Norwegian University of Science and Technology, Trondheim, Norway
| | - E A Torkildsen
- Department of Obstetrics and Gynecology, Stavanger University Hospital, Stavanger, Norway
| | - T B Østborg
- Department of Obstetrics and Gynecology, Stavanger University Hospital, Stavanger, Norway
| | - C C Lees
- Fetal Medicine Department, Rosie Maternity Hospital, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
- Centre for Fetal Care, Queen Charlotte's and Chelsea Hospital, Imperial College Healthcare NHS Trust, London, UK
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Ghi T, Bellussi F, Pilu G. Sonographic diagnosis of lateral asynclitism: a new subtype of fetal head malposition as a main determinant of early labor arrest. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2015; 45:229-231. [PMID: 24753011 DOI: 10.1002/uog.13385] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 03/28/2014] [Accepted: 04/04/2014] [Indexed: 06/03/2023]
Abstract
We report on the sonographic appearance of a new type of fetal head malposition in labor that has not been previously described systematically. In some circumstances, the fetal lie is characterized by a lateral orientation of the head with respect to the trunk and, on suprapubic ultrasound, a transverse section of the fetal chest together with the facial profile can be seen on the same image. These sonographic findings were documented in five cases of first-stage labor arrest. This report illustrates how, in these circumstances, ultrasound might be helpful in clarifying the precise cause of obstructed labor.
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Affiliation(s)
- T Ghi
- Department of Obstetrics and Gynecology, St Orsola Malpighi University Hospital, University of Bologna, Bologna, Italy
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Patwardhan M, Hernandez-Andrade E, Ahn H, Korzeniewski SJ, Schwartz A, Hassan SS, Romero R. Dynamic Changes in the Myometrium during the Third Stage of Labor, Evaluated Using Two-Dimensional Ultrasound, in Women with Normal and Abnormal Third Stage of Labor and in Women with Obstetric Complications. Gynecol Obstet Invest 2015; 80:26-37. [PMID: 25634647 PMCID: PMC4536955 DOI: 10.1159/000370001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 11/18/2014] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To investigate dynamic changes in myometrial thickness during the third stage of labor. METHODS Myometrial thickness was measured using ultrasound at one-minute time intervals during the third stage of labor in the mid-region of the upper and lower uterine segments in 151 patients including: women with a long third stage of labor (n = 30), postpartum hemorrhage (n = 4), preterm delivery (n = 7) and clinical chorioamnionitis (n = 4). Differences between myometrial thickness of the uterine segments and as a function of time were evaluated. RESULTS There was a significant linear increase in the mean myometrial thickness of the upper uterine segments, as well as a significant linear decrease in the mean myometrial thickness of the lower uterine segments until the expulsion of the placenta (p < 0.001). The ratio of the measurements of the upper to the lower uterine segments increased significantly as a function of time (p < 0.0001). In women with postpartum hemorrhage, preterm delivery, and clinical chorioamnionitis, an uncoordinated pattern among the uterine segments was observed. CONCLUSION A well-coordinated activity between the upper and lower uterine segments is demonstrated in normal placental delivery. In some clinical conditions this pattern is not observed, increasing the time for placental delivery and the risk of postpartum hemorrhage.
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Affiliation(s)
- Manasi Patwardhan
- Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Wayne State University, Detroit, Michigan; USA
| | - Edgar Hernandez-Andrade
- Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Wayne State University, Detroit, Michigan; USA
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland, and Detroit, Michigan, USA
| | - Hyunyoung Ahn
- Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Wayne State University, Detroit, Michigan; USA
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland, and Detroit, Michigan, USA
| | - Steven J Korzeniewski
- Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Wayne State University, Detroit, Michigan; USA
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland, and Detroit, Michigan, USA
| | - Alyse Schwartz
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland, and Detroit, Michigan, USA
| | - Sonia S Hassan
- Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Wayne State University, Detroit, Michigan; USA
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland, and Detroit, Michigan, USA
| | - Roberto Romero
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland, and Detroit, Michigan, USA
- Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI, USA
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Malvasi A, Barbera A, Di Vagno G, Gimovsky A, Berghella V, Ghi T, Di Renzo GC, Tinelli A. Asynclitism: a literature review of an often forgotten clinical condition. J Matern Fetal Neonatal Med 2014; 28:1890-4. [DOI: 10.3109/14767058.2014.972925] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Malvasi A, Barbera A, Ghi T, Tinelli A. Lateral asynclitism: introduction of a new terminolgy associated to specific fetal position of the fetal head diagnosed by ultrasound in the second stage of labor. J Matern Fetal Neonatal Med 2014; 28:1839-41. [DOI: 10.3109/14767058.2014.969237] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Eggebø TM, Hassan WA, Salvesen KÅ, Lindtjørn E, Lees CC. Sonographic prediction of vaginal delivery in prolonged labor: a two-center study. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2014; 43:195-201. [PMID: 24105705 DOI: 10.1002/uog.13210] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Revised: 09/03/2013] [Accepted: 09/06/2013] [Indexed: 06/02/2023]
Abstract
OBJECTIVE To investigate whether head-perineum distance (HPD) measured by transperineal ultrasound is predictive of vaginal delivery and time remaining in labor in nulliparous women with prolonged first stage of labor and to compare the predictive value with that of angle of progression (AoP). METHODS This was a prospective observational study at Stavanger University Hospital, Norway and Addenbrooke's Hospital, Cambridge, UK from January 2012 to April 2013, of nulliparous women with singleton pregnancies with cephalic presentation at term with prolonged first stage of labor. We used transperineal ultrasound to measure HPD (shortest distance between the outer bony limit of the fetal skull and the perineum) and AoP (angle between a line through the long axis of the symphysis and the tangent to the fetal head) and transabdominal ultrasound to classify fetal head position. The main outcomes were vaginal delivery and time remaining in labor. RESULTS Of 150 women enrolled, 39 underwent delivery by Cesarean section. The area under the receiver-operating characteristics curve for the prediction of vaginal delivery was 81% (95% CI, 73-89%) using HPD as the test variable and 72% (95% CI, 63-82%) using AoP. HPD was ≤ 40 mm in 84 (56%) women, of whom 77 (92%; 95% CI, 84-96%) delivered vaginally. HPD was > 40 mm in the other 66 (44%) women, of whom 34 (52%; 95% CI, 40-63%) delivered vaginally. AoP was ≥ 110° in 84 of the 145 (58%) in whom this was available and, of these, 74 (88%; 95% CI, 79-93%) delivered vaginally. AoP was < 110° in the other 61 (42%) women, of whom 35 (57%; 95% CI, 45-69%) delivered vaginally. Multivariable logistic regression analysis showed that HPD ≤ 40 mm (odds ratio (OR), 4.92; 95% CI, 1.54-15.80), AoP ≥ 110° (OR, 3.11; 95% CI, 1.01-9.56), non-occiput posterior position (OR, 3.36; 95% CI, 1.24-9.12) and spontaneous onset of labor (OR, 4.44; 95% CI, 1.42-13.89) were independent predictors for vaginal delivery. Both ultrasound methods were predictive for the time remaining in labor. CONCLUSION Transperineal ultrasound measurement of HPD and AoP provide important information about the likelihood of vaginal delivery and the time remaining in labor in nulliparous women with prolonged labor.
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Affiliation(s)
- T M Eggebø
- Department of Obstetrics and Gynecology, Stavanger University Hospital, Stavanger, Norway; National Center for Fetal Medicine, Trondheim University Hospital (St Olavs Hospital), Trondheim, Norway
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Eggebø TM. Ultrasound is the future diagnostic tool in active labor. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2013; 41:361-363. [PMID: 23641509 DOI: 10.1002/uog.12417] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Affiliation(s)
- T M Eggebø
- Department of Obstetrics and Gynecology, Stavanger University Hospital, Stavanger, Norway.
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Fouché CJ, Simon EG, Potin J, Perrotin F. Le suivi échographique de la deuxième partie du travail. ACTA ACUST UNITED AC 2012; 40:658-65. [DOI: 10.1016/j.gyobfe.2012.09.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Indexed: 10/27/2022]
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Ghi T, Maroni E, Youssef A, Cariello L, Salsi G, Arcangeli T, Frascà C, Rizzo N, Pilu G. Intrapartum three-dimensional ultrasonographic imaging of face presentations: report of two cases. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2012; 40:117-118. [PMID: 22223511 DOI: 10.1002/uog.11077] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Sherer DM. Can sonographic depiction of fetal head position prior to or at the onset of labor predict mode of delivery? ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2012; 40:1-6. [PMID: 22753319 DOI: 10.1002/uog.11213] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Affiliation(s)
- D M Sherer
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, State University of New York (SUNY), Downstate Medical Center, 450 Clarkson Avenue, Box 24, Brooklyn, NY 11203, USA.
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