Forceps Delivery Research Articles

Postpartum Pubic Diastasis with Significant Widening: A Rare Case Series.

Postpartum pubic symphysis diastasis is a relatively rare entity. It is usually associated with cephalopelvic disproportion, macrosomia, multiparity, precipitate labor, difficult labor, difficult forceps delivery, any other pelvic bone pathologies, and underlying connective tissue disorders. Management is typically conservative in most cases, but surgical intervention is sometimes required in cases where pubic symphysis is >4 cm and not responding to conservative management. Case with more than 4 cm of pubic diastasis is usually associated with disruption of the symphyseal ligament, sacroiliac joint capsule, and ligaments. Surgical management promotes early ambulation with good functional recovery and decreases the chances of symphyseal sclerosis, functional disability, and chronic pain. Four female patients with postpartum pubic diastasis of more than 7 cm with an age ranging from 20 to 30 years underwent open reduction and internal fixation using plates and screws.In all four cases, the patient got early ambulation and full functional recovery without any pain, discomfort, and disability at 3 months of follow up. Although conservative management has been advocated for postpartum pubic diastasis typically, surgical intervention should be sought for significant pubic diastasis (more than 4 cm) to promote early full functional recovery and avoid chronic pain, functional disability, and symphyseal sclerosis.

Pelvic floor-related sexual functioning in the first 24 months postpartum: Findings of a large cross-sectional study.

The pelvic floor is exposed to differing stresses and trauma depending on the mode of birth. At the same time, the pelvic floor plays a crucial role in female sexual functioning (FSF). Whereby FSF encompasses different dimensions, from subjective satisfaction to physiological aspects, such as lack of pain and orgasm ability. The aim of the study presented here is to assess FSF in relationship to postpartum pelvic floor disorder based on the Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire, IUGA-Revised (PISQ-IR), in a large convenience sample and to identify whether there is an association between mode of birth as well as perineal injuries and FSF of women up to 24 months postpartum. We conducted a cross-sectional online survey and recruited via social media women up to 24 months after birth of their last child. FSF was surveyed using the PISQ-IR. Details were also collected on all previous births and birth-related perineal trauma, as well as current breastfeeding, obesity, and socio-demographics. Multivariate models were then calculated to determine a possible association between FSF and birth mode. The data basis is the responses of 2106 survey participants within the first 24 months postpartum. Even 12-24 months postpartum, 21% of respondents are not sexually active, which burdens almost 44% of these women. With regard to mode of delivery, differences in FSF are only evident in individual dimensions of the PISQ-IR. The dimensions "Condition Impact" and "Condition Specific" were significantly associated with more impairments in sexually active respondents up to 12 months postpartum whose last mode of delivery was forceps or vacuum extraction. If a perineal tear had occurred during last birth, this was significantly associated with a lower PISQ-IR subscore in the "Condition Impact," "Condition-Specific," "Global Quality," "Partner-Related," and "Arousal" models. The low variance explanation shows that further relevant factors on female sexuality may exist. The issue of impairments in FSF following childbirth, persisting for an extended period of time, is a significant postpartum concern. Due to the very different dimensions of FSF, the influence of the mode of delivery must be considered in a differentiated way.

Neurodevelopment of Children Born with Forceps Delivery—A Single Tertiary Clinic Study

Neurodevelopment of Children Born with Forceps Delivery—A Single Tertiary Clinic Study

Anatomical and physiological aspects of the mutual influence of circulatory hypoxia of the myometrium and non-progressive labour

Non-progressive labour occurs in almost 10% of deliveries and is a main reason for unplanned cesarean sections and operative vaginal births using obstetric forceps or vacuum extraction. This article describes the morphological transformation of the myometrium and uterine blood vessels that occurs during pregnancy. It is shown that the myometrium inevitably experiences hypoxia at the microstructural level during each normal or pathological labour. We analyzed recent studies of the mutual influence of myometrial hypoxia and labour dystocia. Experimental and clinical studies showed relationship between the pH values and lactate levels determined in the myometrium on its contractility. Further research is justified, including the study of the pH and lactate values in amniotic fluid in patients with non-progressive labor. Finally, that will allow for clarifying the conditions and timing of labour stimulation with oxytocin and identifying a group of patients for whom oxytocin administration is contraindicated or hopeless.

Risk of cervical laceration in forceps vs vacuum delivery: Asystematic review and meta-analysis.

Cervical laceration is an obstetric injury associated with severe postpartum hemorrhage and subsequent spontaneous preterm birth. While operative vaginal delivery is a known risk factor for cervical laceration, it is unclear whether forceps and vacuum deliveries incur the same risk. The aim of this systematic review was to compare the risk of cervical laceration between operative instruments (forceps vs vacuum). Medline, Embase, Global Health, CENTRAL, Emcare, and Web of Science were searched from inception until August 2024 with terms related to operative vaginal delivery and cervical laceration. Studies comparing the risk of cervical laceration in individuals undergoing forceps or vacuum delivery were included. Two authors conducted screening, data extraction, and quality assessment of all studies. Random-effects models were used to pool risk ratios across studies and certainty of evidence was assessed using Cochrane methods and the GRADE approach. PROSPERO Registration Number CRD42023421890. Thirteen studies were eligible for inclusion, 3 randomized controlled trials (RCTs) and 10 observational studies. The overall rate of cervical laceration was 0.35% (990/284218 births) where 1.04% of forceps deliveries (456/43817) were complicated by cervical laceration compared to 0.22% of vacuum deliveries (534/240401). The risk of cervical laceration was 2-5 fold greater in forceps deliveries than in vacuum deliveries: pooled unadjusted risk ratio [RR] 4.83, 95% confidence interval [CI] 1.56-14.98 among RCTs and pooled unadjusted RR 1.89, 95% CI 1.59-2.24 among observational studies. The overall quality of evidence was low to moderate mainly due to the lack of attention to confounding in the included literature. The GRADE assessment indicated that the certainty of evidence was very low for observational studies and moderate for RCTs. Low certainty of evidence indicates that forceps deliveries may be associated with an increased risk of cervical laceration compared to vacuum deliveries.

The Risk Factors of Postpartum Urinary Retention for Women by Vaginal Birth: A Systematic Review and Meta-Analysis.

Postpartum urinary retention is one of the most common complications in women during the immediate postpartum period. The objective was to systematically assess risk factors for postpartum urinary retention after vaginal delivery. Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses, we retrieved relevant studies from PubMed, Embase, Cochrane Library, Web of Science Core Collection, China National Knowledge Internet, Wangfang Database, and Chinese Biomedical Database for observational studies investigating the risk factors for postpartum urinary retention from inception to 11 November 2022. The Newcastle-Ottawa Scale and Joanna Briggs Institute's tool were used to assess the risk of bias. We conducted a meta-analysis using RevMan 5.3. In total, 3,074 articles were screened and data from 27 studies were used in the meta-analysis. Sixteen risk factors were identified, namely, labor augmentation (OR = 1.72, 95% CI = 1.17-2.51), primiparity (OR = 2.36, 95% CI = 1.64-3.38), manual fundal pressure (OR = 2.84, 95% CI = 1.00-8.11), perineal hematoma (OR = 7.28, 95% CI = 1.62-32.72), vulvar edema (OR = 7.99, 95% CI = 5.50-11.63), the total duration of labor (MD = 90.10, 95% CI = 49.11-131.08), the duration of the first stage of labor (MD = 33.97, 95% CI = 10.28-57.65), the duration of the second stage of labor (MD = 14.92, 95% CI = 11.79-18.05), the duration of the second stage of labor > 60min (OR = 3.18, 95% CI = 1.32-7.67), mediolateral episiotomy (OR = 3.65, 95% CI = 1.70-7.83), severe perineal tear (OR = 3.21, 95% CI = 1.84-5.61), epidural analgesia (OR = 3.23, 95% CI = 1.50-6.96), forceps delivery (OR = 4.95, 95% CI = 2.88-8.51), vacuum delivery (OR = 2.44, 95% CI = 1.30-4.58), neonatal birth weight > 4,000g (OR = 3.61, 95% CI = 1.96-6.65), and neonatal birth weight > 3,500g (OR = 1.89, 95% CI = 1.12-3.19). Our results demonstrated that labor augmentation, primiparity, manual fundal pressure, perineal hematoma, vulvar edema, the total duration of labor, the duration of the first stage of labor, the duration of the second stage of labor, the duration of the second stage of labor > 60min, mediolateral episiotomy, severe perineal tear, epidural analgesia, forceps delivery, vacuum delivery, and neonatal birth weight > 4,000g and > 3,500g were risk factors for postpartum urinary retention in women with vaginal delivery. The specific ranges of the first and the second stages of labor causing postpartum urinary retention need to be clarified.

Traumatic hyphema in a neonate: An unusual presentation

Subconjunctival hemorrhages following forceps delivery are common. However, their presence with hyphema is rare. This case report describes a full-term neonate who was initially examined for trauma and subconjunctival hemorrhage in both eyes with diffuse hyphema in right eye following forceps delivery. The anterior segment showed nondilating pupil with fine blood vessels on the iris in one eye along with tunica vasculosa lentis. B-scan showed a hyperechoic line in the vitreous suggestive of unilateral persistent fetal vasculature.

Descemet Membrane Endothelial Keratoplasty for Late Corneal Edema Secondary to Obstetrical Forceps–Related Tears

Purpose: The purpose of our paper is to describe the outcome of Descemet membrane endothelial keratoplasty (DMEK) in patients with a history of known obstetrical forceps–related tears who developed clinically significant corneal edema in their eighth decade of life. Methods: Case series. Results: Two patients with a known history of obstetrical forceps–related tears presented with corneal edema and vertical tears of Descemet membrane consistent with birth trauma. DMEK was performed for both cases. Case 1 underwent pseudophakic DMEK, and Case 2 underwent combined phacoemulsification and DMEK (triple-DMEK). DMEK grafts were fully attached in both cases at postoperative 1-day and 1-week appointments, as confirmed on slit-lamp examination and anterior segment optical coherence tomography. There was marked improvement in best-corrected visual acuity and corneal edema in both patients. Conclusions: We demonstrate that DMEK can afford excellent results in patients with a history of obstetrical forceps injury, who experience corneal edema later in life. In addition, we show that the triple-DMEK can be done successfully in this entity.

Forceps-assisted delivery leads to the formation of a giant uterine isthmus diverticulum: A case report

The formation of uterine diverticula following forceps-assisted delivery is a rare complication characterized by irregular and prolonged postpartum menstruation. While ultrasound and MRI can assist in diagnosis, the identification of this condition often suffers from delayed recognition due to an absence of cesarean section history. Case Report: We present a case involving a 31-year-old woman who developed a uterine diverticulum as a result of forceps delivery and was misdiagnosed for four years. Conclusions: This case report highlights an uncommon complication associated with forceps-assisted delivery—uterine diverticula—and proposes strategies for the early identification and prevention of such conditions following these types of deliveries.

Obstetrical forceps induced Descemet’s membrane detachment (DMD)

Obstetrical forceps induced Descemet’s membrane detachment (DMD)

Temporal trends and regional variations in operative vaginal deliveries in Japan: A national representative cohort study.

To analyze temporal trends and regional variations in operative vaginal delivery (OVD) in Japan. Using the National Database of Health Insurance Claims and Specific Health Checkups of Japan from 2014 to 2021, we identified the numbers of vacuum and forceps deliveries. We analyzed annual totals and proportions of OVDs and calculated the mean age of women undergoing these deliveries. We also predicted trends in OVD for the next 20 years and compared geographical differences in the proportions of forceps deliveries among OVDs. During the observation period, out of 7 368 814 total births, 8.4% were through OVD, including 7.6% by vacuum and 0.8% by forceps. Both delivery methods showed an increasing trend from 2014 to 2021: vacuum deliveries rose from 7.0% to 8.7%, and forceps deliveries increased from 0.6% to 1.0%. Notably, the proportion of forceps deliveries in OVD increased from 8.1% to 10.5%. The mean age was higher for forceps deliveries than vacuum deliveries. According to our predictions, vacuum deliveries may continue to increase, but forceps deliveries may stabilize. The proportion of forceps deliveries among OVDs ranged from 0% to 38% across Japanese prefectures. This study shows an increase in the use of OVD in Japan from 2014 to 2021. There are large regional differences in the choice between vacuum and forceps deliveries. These findings can help us understand the practice of OVD in Japan.

Urinary incontinence, faecal incontinence and pelvic organ prolapse symptoms 20-26 years after childbirth: A longitudinal cohort study.

To investigate pelvic floor dysfunction (PFD; urinary incontinence (UI), faecal incontinence (FI) and prolapse) ≥20 years after childbirth and their association with delivery mode history and demographic characteristics. Cohort study with long-term follow-up. Maternity units in Aberdeen and Birmingham (UK) and Dunedin (NZ). Women giving birth in 1993/1994. Postal questionnaires at 20 (New Zealand) or 26 (United Kingdom) years after index birth (n = 6195). Regression analyses investigated associations between risk factors and UI, FI and prolapse symptoms. Prevalence of self-reported UI, FI, 'something coming down' from or in the vagina (SCD), and the Pelvic Organ Prolapse-Symptom Score, and relationships with delivery method. Thirty-seven per cent (n = 2270) responded at 20/26 years, of whom 61% reported UI (59% of whom reported more severe UI), 22% FI and 17% prolapse symptoms. Having only caesarean section (CS) was associated with a significantly lower risk of UI (OR 0.63, 95% CI 0.46-0.85), FI (OR 0.63, 95% CI 0.42-0.96) and SCD (OR 0.44, 95% CI 0.27-0.74) compared to only spontaneous vaginal deliveries (SVDs). Having any forceps delivery was associated with reporting FI compared to only SVDs (OR 1.29, 95% CI 1.00-1.66), but there was no association for UI (OR 0.95, 95% CI 0.76-1.19) or SCD (OR 1.05, 95% CI 0.80-1.38). Higher current BMI was associated with all PFD outcomes. Prevalence of PFD continues to increase up to 26 years following index birth, and differences were observed according to delivery mode history. Exclusive CS was associated with less risk of UI, FI and any prolapse symptoms.

Minimally Invasive Extraction System Benex-Clinical Evaluation and Comparison.

Tooth extraction is one of the oldest and most well-known surgical procedures in dental medicine. It is still routinely performed by general practitioners and dental undergraduates. The Benex extraction system allows for the extraction of teeth in a vertical direction, which avoids most trauma against surrounding alveolar bone and soft tissues. The study included 56 patients who were recruited from the Department of Oral Surgery, Medical University-Plovdiv. The patients were split into two groups of 28 patients-Group I (control group) and Group II (study group). For each group, the success of the extraction, buccal cortical plate preservation, pain experience and early wound healing were assessed. There was no statistical significance between the success of the extractions in both groups. The Benex extractions preserved the buccal cortical plate in 95% of the cases, whereas the forceps extractions preserved it in only 71.8%, which is statistically significant. On the seventh day, patients in Group II reported less pain, without a significant difference. There was a significantly bigger number of completely healed extraction wounds on the 10th day. Atraumatic extractions allow for more hard and soft tissues to be preserved in the extraction site. This is essential for a successful outcome and the aesthetically pleasing results of the following dental restoration.

Obstetric anal sphincter injuries during instrumental vaginal delivery: An observational study based on 18-years of real-world data.

To determine the prevalence and secular trends of obstetric anal sphincter injuries (OASIS) in vacuum and forceps deliveries in Norway, both with and without episiotomy. Population-based real-world data collected during 2001-2018. Medical Birth Registry Norway. Nulliparous women with singleton foetuses in a cephalic presentation delivered by either vacuum or forceps (n = 70 783). Logistic regression analyses were applied to the OASIS prevalence in six 3-year time periods. Both crude odds ratios and adjusted odds ratios (aORs) with 95% confidence intervals (CIs) were determined. OASIS prevalence. The OASIS prevalence in vacuum and forceps deliveries decreased from 14.8% during 2001-2003 to 5.2% during 2016-2018. The overall reduction between the first and last 3-year time period was 61% (aOR = 0.39, 95% CIs = 0.35-0.43). The only exception to this decreasing trend in OASIS was found in forceps deliveries performed without an episiotomy. The OASIS prevalence was approximately twofold higher in forceps compared to vacuum deliveries (aOR = 1.92, 95% CIs = 1.79-2.05). Performing either a mediolateral or lateral episiotomy was associated with a 45% decrease in the prevalence of OASIS relative to no episiotomy (aOR = 0.55, 95% CIs = 0.52-0.58). Opting for vacuum rather than forceps delivery in conjunction with a mediolateral or lateral episiotomy could significantly lower the OASIS prevalence in nulliparous women.

Risk factors for postpartum hemorrhage according to the Robson classification in a low-risk maternity hospital.

To evaluate the risk factors for postpartum hemorrhage (PPH) according to the Robson Classification in a low-risk maternity hospital. We conducted retrospective cohort study by analyzing the medical records of pregnant women attended in a low-risk maternity hospital, during from November 2019 to November 2021. Variables analyzed were: maternal age, type of delivery, birth weight, parity, Robson Classification, and causes of PPH. We compared the occurrence of PPH between pregnant women with spontaneous (Groups 1 and 3) and with induction of labor (2a and 4a). Chi-square and Student t-tests were performed. Variables were compared using binary logistic regression. There were 11,935 deliveries during the study period. According to Robson's Classification, 48.2% were classified as 1 and 3 (Group I: 5,750/11,935) and 26.1% as 2a and 4a (Group II: 3,124/11,935). Group II had higher prevalence of PPH than Group I (3.5 vs. 2.7%, p=0.028). Labor induction increased the occurrence of PPH by 18.8% (RR: 1.188, 95% CI: 1.02-1.36, p=0.030). Model including forceps delivery [x2(3)=10.6, OR: 7.26, 95%CI: 3.32-15.84, R2 Nagelkerke: 0.011, p<0.001] and birth weight [x2(4)=59.0, OR: 1.001, 95%CI:1.001-1.001, R2 Nagelkerke: 0.033, p<0.001] was the best for predicting PPH in patients classified as Robson 1, 3, 2a, and 4a. Birth weight was poor predictor of PPH (area under ROC curve: 0.612, p<0.001, 95%CI: 0.572-0.653). Robson Classification 2a and 4a showed the highest rates of postpartum hemorrhage. The model including forceps delivery and birth weight was the best predictor for postpartum hemorrhage in Robson Classification 1, 3, 2a, and 4a.

Oral management for a patient with trismus accompanied by Isaacs’ syndrome: a case report

BackgroundIsaacs’ syndrome, also known as neuromyotonia or peripheral nerve hyperexcitability, is a rare disorder that affects the peripheral nervous system. Clinical findings include cramps, fasciculations, and myokymia; however, there are few reports of dental treatment for trismus.Case presentationA patient with trismus due to Isaacs’ syndrome experienced swelling and pain in the gingiva surrounding his right lower first molar. He was diagnosed with chronic apical periodontitis by a dentist near his home. However, the patient was informed that dental treatment and medication could not be administered because of the presence of Isaacs’ syndrome, and he visited the Geriatric Dentistry and Perioperative Oral Care Center at Kyushu University Hospital 2 weeks later. The patient’s painless mouth-opening distance (between incisors) was 20 mm at that time, and medication, including amoxicillin capsules and acetaminophen, was administered because the dental extraction forceps or endodontic instruments were difficult to insert into the oral cavity for treatment. Two months after his initial visit, the patient visited us complaining of pain in the same area. However, he had recently undergone plasmapheresis treatment in neurology to alleviate limited mouth opening and systemic myalgia, resulting in a pain-free mouth-opening distance of approximately 35 mm. During this temporary period in which he had no restriction in mouth opening, we performed tooth extraction and bridge restoration on the mandibular right first molar and created an oral appliance for sleep bruxism.ConclusionsPlasmapheresis therapy transiently reduced trismus, rendering dental interventions feasible, albeit temporarily. This case report underscores the importance of close collaboration between neurologists and dentists who encounter similar cases while furnishing valuable insights to inform dental treatment planning.

Prediction of spontaneous vaginal delivery in the prolonged second stage using the delta angle of progression

It is clinically challenging to determine when to intervene in the prolonged second stage. Although individualized prediction of spontaneous vaginal delivery is crucial to avoid maternal and neonatal complications associated with operative deliveries, the approach has not been fully established. We aimed to evaluate the predictability of spontaneous vaginal delivery using the difference in angle of progression between pushing and rest, delta angle of progression, to establish a novel method to predict spontaneous vaginal delivery during the prolonged second stage in nulliparous women with epidural anesthesia. We retrospectively analyzed deliveries of nulliparous women with epidural anesthesia between September 2018 and October 2023. Women were included if their delta angle of progression during the second stage was available. Operative deliveries were defined as the cases that required forceps, vacuum, and cesarean deliveries due to labor arrest. Women requiring operative deliveries due to fetal and maternal concerns, or women with fetal occiput posterior presentation were excluded. The second stage was stratified into the prolonged second stage, the period after 3 hours in the second stage, and the normal second stage, the period from the beginning until the third hour of the second stage. The association of the delta angle of the progression measured during each stage with spontaneous vaginal delivery and operative deliveries was investigated. Furthermore, the predictability of spontaneous vaginal delivery was evaluated by combining the delta and rest angle of progression. A total of 129 women were eligible for analysis. The delta angle of progression measured during the prolonged second stage and normal second stage were significantly larger in women who achieved spontaneous vaginal delivery compared to operative deliveries (p<.001 and p<.05, respectively). During the prolonged second stage, a cutoff of 18.8 derived from the receiver operative characteristic curves in the context of the delta angle of progression predicted the possibility of spontaneous vaginal delivery (sensitivity, 81.8%; specificity, 60.0%; AUC, 0.76). Combining the rest angle of progression (>140) and delta angle of progression (>18.8) also provided quantitative prediction of spontaneous vaginal delivery (sensitivity, 86.7%; specificity, 70.0%; AUC, 0.80). The delta angle of progression alone or in combination with the rest angle of progression can be used to predict spontaneous vaginal delivery in the second stage in nulliparous women with epidural anesthesia. Quantitative analysis of the effect of pushing using the delta angle of progression provides an objective guide to assist with an assessment of labor dystocia in the prolonged second stage on an individualized basis, which may optimize labor management in the prolonged second stage by reducing neonatal and maternal complications related to unnecessary operative deliveries and prolonged second stage of labor.

Join point trends of instrumental vaginal deliveries and cesarean sections at the Lagos University Teaching Hospital, Lagos, Nigeria (2002-2017).

To determine the trends of instrumental vaginal delivery (IVD) and cesarean section (CS) at the Lagos University Teaching Hospital (LUTH), Nigeria, over 16 years, from 2002 to 2017. A retrospective cross-sectional study. The case records of all women who had IVD and CS during the study period were reviewed. The trends in the IVD and CS rates were evaluated using join point regression modeling. The average annual percent change (AAPC) and annual percent change (APC) with associated 95% confidence interval of segmental trends were calculated. The overall IVD rate was 1.36%. Vacuum delivery rate was higher than forceps (0.79% vs 0.57%). The CS rate was 44.9 per 100 deliveries; the rate increased by about 3.7% per annum. CS rates were 7.1-89.9 times the IVD rates within the study period. The number of IVDs performed in the hospital declined by about 83.02%, from 53 cases in 2002 to nine cases in 2017. Forceps delivery declined at a faster rate than vacuum delivery between 2002 and 2017 (AAPC for forceps: -12.6% [-17.5 to -7.5], P < 0.001 vs AAPC for vacuum: -6.2% [-14.3 to 2.7], P = 0.200). The commonest indication for IVD was prolonged second stage of labor (47/162, 29.01%) and shortening of the second stage of labor for maternal conditions (47/162, 29.01%). IVD rates are low and declining at LUTH. There is need to train accoucheurs on the safe use of IVDs to potentially reduce the CS rate.

Neonatal complications and risk factors associated with assisted vaginal delivery

To investigate neonatal injuries, morbidities and risk factors related to vaginal deliveries. This retrospective, descriptive study identified 3500 patients who underwent vaginal delivery between 2020 and 2022. Demographic data, neonatal injuries, complications arising from vaginal delivery and pertinent risk factors were documented. Neonatal injuries and morbidities were prevalent in cases of assisted vacuum delivery, gestational diabetes mellitus class A2 (GDMA2) and pre-eclampsia with severe features. Caput succedaneum and petechiae were observed in 291/3500 cases (8.31%) and 108/3500 cases (3.09%), respectively. Caput succedaneum was associated with multiparity (adjusted odds ratio [AOR] 0.36, 95% confidence interval [CI] 0.22–0.57, P < 0.001) and assisted vacuum delivery (AOR 5.18, 95% CI 2.60–10.3, P < 0.001). Cephalohaematoma was linked to GDMA2 (AOR 11.3, 95% CI 2.96–43.2, P < 0.001) and assisted vacuum delivery (AOR 16.5, 95% CI 6.71–40.5, P < 0.001). Scalp lacerations correlated with assisted vacuum and forceps deliveries (AOR 6.94, 95% CI 1.85–26.1, P < 0.004; and AOR 10.5, 95% CI 1.08–102.2, P < 0.042, respectively). Neonatal morbidities were associated with preterm delivery (AOR 3.49, 95% CI 1.39–8.72, P = 0.008), night-time delivery (AOR 1.32, 95% CI 1.07–1.63, P = 0.009) and low birth weight (AOR 7.52, 95% CI 3.79–14.9, P < 0.001). Neonatal injuries and morbidities were common in assisted vacuum delivery, maternal GDMA2, pre-eclampsia with severe features, preterm delivery and low birth weight. Cephalohaematoma and scalp lacerations were prevalent in assisted vaginal deliveries. Most morbidities occurred at night.Clinical trial registration: Thai Clinical Trials Registry 20220126004.

Which type of forceps is better for nonrotational operative births? A simulation study comparing Thierry spatulas and Simpson-Braun and Kielland forceps.

Obstetric forceps play an important role in safe childbirth, yet there is a lack of distinction between various forceps types in clinical practice. This study aimed to evaluate and compare perineal pressure and forces on the baby during nonrotational forceps-assisted births using Simpson-Braun forceps, Kielland forceps, and Thierry spatulas on a simulation model. This experimental study involved six obstetricians conducting 108 forceps-assisted births on a simulation model. Instruments were assessed for their impact on perineal pressure, traction force, and operator-assessed difficulty. Thierry's spatulas exerted the lowest force on the baby, while Kielland forceps exhibited the lowest perineal pressure, though not statistically significant. An experienced obstetrician demonstrated less perineal pressure with Simpson forceps. Notably, no significant differences in difficulty were observed between instruments. This study highlights distinctions in forceps performance, with Thierry spatulas applying the least force on the fetal head, while an experienced obstetrician fared better with Simpson forceps in terms of perineal pressure. Kielland forceps remain a viable alternative for nonrotational forceps births, showing comparable outcomes.