Lower uterine segment

子宫下段
  • 文章类型: Journal Article
    这项研究检查了拉下子宫颈并将其填入阴道穹窿(PC-PVF)对子宫下段产后出血(PPH-LUS)的疗效。
    对2019年1月至2022年12月在两家三级医院阴道分娩后的所有PPH-LUS病例进行回顾性调查。保守治疗成功的患者仅分为常规治疗(40例),常规治疗+早期PC-PVF(33例),常规治疗+晚期PC-PVF(51例)组。常规治疗包括子宫按摩,子宫内膜,和氨甲环酸给药。通过比较分娩后24h内的出血量和出血率来评估治疗效果。
    总共124例患者接受了保守治疗,除了3例因子宫下段不完全破裂而在PC-PVF失败后进行剖腹止血的患者。仅常规治疗的疗效为44%(40/91),与PC-PVF联合用于PPH-LUS的疗效为100%。产妇年龄差异无统计学意义,孕周,新生儿体重,和阿普加得分。但常规治疗+早期PC-PVF组的总失血量(657.27ml±131.61ml)明显低于其他两组,分别为847.13ml±250.37ml(p<0.01)和1040.78ml±242.70ml(p<0.01),分别。常规治疗+早期PC-PVF组填塞后出血率明显下降。
    PC-PVF是PPH-LUS的安全有效治疗方法。早期识别PPH-LUS并及时应用PC-PVF可有效减少阴道分娩后的失血量。
    产后出血严重威胁孕产妇安全,仍是孕产妇死亡的主要原因。目前,阴道分娩后缺乏对PPH-LUS的早期识别和有针对性的保守治疗.仍然非常需要治疗PPH-LUS的创新,因为,根据目前可用的管理策略,结果仍然不一致,增加并发症的风险,基层医院的准入有限。根据临床数据统计和比较,事实证明,PC-PVF是一种简单的,快速,本研究采用非侵入性方法治疗阴道分娩后的PPH-LUS。由于其简单的技术要求,易于获取的材料,成本低,PC-PVF适用于各级医院。
    UNASSIGNED: This study examined the efficacy of pulling down the cervix and packing it in the vaginal fornix (PC-PVF) on postpartum hemorrhage in the lower uterine segment (PPH-LUS).
    UNASSIGNED: All cases of PPH-LUS after vaginal delivery at two tertiary hospitals between January 2019 and December 2022 were retrospectively investigated. Patients treated successfully with conservative measures were divided into routine treatment only (40 patients), routine treatment + early PC-PVF (33 patients), and routine treatment + late PC-PVF (51 patients) groups. Routine treatment consisted of uterine massage, uterotonics, and tranexamic acid administration. The therapeutic effect was evaluated by comparing the volume and rate of bleeding within 24 h after delivery.
    UNASSIGNED: A total of 124 patients were treated conservatively, except for three patients who underwent laparotomy for hemostasis after PC-PVF failed for incomplete rupture of the lower uterine segment. The efficacy of treatment was 44% (40/91) for routine treatment only and 100% when combined with PC-PVF for PPH-LUS. There was no significant difference in maternal age, gestational week, neonatal weight, and Apgar score. But the total blood loss in the conventional treatment + early PC-PVF group (657.27 ml ± 131.61 ml) was significantly lower than that in the other two groups, which was 847.13 ml ± 250.37 ml(p < .01) and 1040.78 ml ± 242.70 ml (p < .01), respectively. The bleeding rate in the routine treatment + early PC-PVF group decreased significantly after tamponade.
    UNASSIGNED: PC-PVF is a safe and effective treatment for PPH-LUS. Early identification of PPH-LUS and prompt application of PC-PVF can effectively reduce blood loss after vaginal delivery.
    Postpartum hemorrhage is a serious threat to maternal safety and remains to be the leading cause of maternal death. At present, there is a lack of early identification and targeted conservative treatment of PPH-LUS after vaginal delivery. Innovations for the treatment of PPH-LUS are still greatly needed because, with currently available management strategies, there is still inconsistency in outcomes, increased risk of complications, and limited access in primary hospitals. Based on clinical data statistics and comparison, it is proved that PC-PVF is a simple, rapid, and noninvasive method for the treatment of PPH-LUS after vaginal delivery in this study. Because of its simple technical requirements, easily accessible materials, and low cost, PC-PVF is suitable for hospitals at all levels.
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  • 文章类型: Journal Article
    目的:评价止血效果,并发症,前置胎盘行子宫下段垂直压迫缝合联合宫内球囊填塞(热狗法)以实现剖宫产后止血的妊娠结局。
    方法:我们回顾性分析了117例诊断为前置胎盘的单胎妊娠妇女的数据,这些妇女在妊娠29至38周之间进行了剖宫产。治疗方法如下:(1)胎盘脱离后常规静脉给予催产素,并根据需要在脱离部位缝合出血点(常规组)(n=47)。(2)单独宫内球囊填塞(球囊组)(n=41)。(3)垂直压迫缝线+宫内球囊填塞(热狗组)(n=29)。
    结果:球囊组和热狗组的胎盘植入谱患病率明显高于常规组。与气球组相比,热狗组的前置胎盘患病率明显更高。与常规组相比,热狗组的术中失血量和总失血量明显更高。热狗与气球组的术后失血量明显较低。与常规组和球囊组相比,热狗组需要更少的其他手术来管理术后出血。传统的后续怀孕次数,气球,热狗组为11组(23.4%),8(19.5%),和4(13.8%),分别;所有结果都是足月活产,没有严重的产科并发症。
    结论:热狗方法是一种简单而安全的前置胎盘止血技术,可以保留生育能力并控制严重出血。
    OBJECTIVE: To evaluate hemostatic efficacy, complications, and subsequent pregnancy outcomes in women with placenta previa who underwent combined vertical compression sutures in the lower uterine segment and intrauterine balloon tamponade (Hot-Dog method) to achieve hemostasis after cesarean section.
    METHODS: We retrospectively reviewed data for 117 women with singleton pregnancy diagnosed with placenta previa who underwent cesarean section between 29 and 38 weeks\' gestation. Treatments were as follows: (1) conventional-intravenous oxytocin administration after placental detachment and suturing of bleeding points at the detachment site as needed (conventional group) (n = 47). (2) Intrauterine balloon tamponade alone (balloon group) (n = 41). (3) Vertical compression sutures + intrauterine balloon tamponade (Hot-Dog group) (n = 29).
    RESULTS: The placenta accreta spectrum prevalence was significantly higher in the balloon and Hot-Dog groups versus the conventional group. The prevalence of anteriorly located placenta was significantly higher in the Hot-Dog versus balloon groups. Intraoperative and total blood loss were significantly higher in the Hot-Dog versus conventional groups. Postoperative blood loss was significantly lower in the Hot-Dog versus balloon groups. Fewer additional procedures for managing postoperative hemorrhage were required in the Hot-Dog versus conventional and balloon groups. The number of subsequent pregnancies in the conventional, balloon, and Hot-Dog groups was 11 (23.4%), 8 (19.5%), and 4 (13.8%), respectively; all resulted in live births at term without serious obstetric complications.
    CONCLUSIONS: The Hot-Dog method is a straightforward and safe hemostasis technique for placenta previa that preserves fertility and controls severe bleeding.
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  • 文章类型: Journal Article
    目的:为了评估超声测量子宫下段(LUS)厚度的准确性,并研究其与在资源有限的情况下进行一次剖腹产(CD)后阴道分娩成功率的相关性。
    方法:前瞻性研究。
    方法:加纳某三级医院妇产科。
    方法:先前有一张CD的妇女正在接受分娩试验(TOLAC)或选择性CD。
    方法:采用经阴道超声(TVUS)测量子宫肌层子宫下段厚度(mLUS)和全子宫下段厚度(fLUS)。根据当地协议对妇女进行管理,临床医生对超声测量结果视而不见。术中测量LUS以与超声测量进行比较。
    方法:剖腹时子宫下段发现,阴道分娩成功。
    结果:共有311名既往有CD的孕妇入选;147名妇女接受了选择性CD,164名妇女接受了TOLAC。在接受TOLAC的女性中,96名(58.5%)妇女阴道分娩成功。MLUS与LUS厚度<5mm(偏差为0.01,95%CI-0.10至0.12mm)的择期CD组的术中测量结果相当,而fLUS高估了LUS<5mm(偏差为0.93,95%CI0.80-1.06mm)。成功的阴道分娩率与mLUS值的增加相关(比值比1.30,95%CI1.03-1.64)。记录子宫缺损12例。LUS测量≤2.0mm与子宫缺损风险增加相关,敏感性为91.7%(95%CI61.5-99.8%),特异性为81.8%(95%CI75.8-86.8%)。
    结论:在资源有限的情况下,LUS的精确TVUS测量在技术上是可行的。这种方法可以帮助在资源有限的环境中对出生方式做出更安全的决定。
    OBJECTIVE: To assess the accuracy of ultrasound measurement of the lower uterine segment (LUS) thickness against findings at laparotomy, and to investigate its correlation with the success rate of vaginal birth after one previous caesarean delivery (CD) in a resource-limited setting.
    METHODS: Prospective study.
    METHODS: Obstetrics and Gynaecology department in a tertiary hospital in Ghana.
    METHODS: Women with one previous CD undergoing either a trial of labour (TOLAC) or elective CD.
    METHODS: Myometrial lower uterine segment thickness (mLUS) and full lower uterine segment thickness (fLUS) were measured with transvaginal ultrasound (TVUS). The women were managed according to local protocols with the clinicians blinded to the ultrasound measurements. The LUS was measured intraoperatively for comparison with ultrasound measurements.
    METHODS: Lower uterine segment findings at laparotomy, successful vaginal birth.
    RESULTS: A total of 311 pregnant women with one previous CD were enrolled; 147 women underwent elective CD and 164 women underwent a TOLAC. Of the women that underwent TOLAC, 96 (58.5%) women had a successful vaginal birth. The mLUS was comparable to the intraoperative measurement in the elective CD group with LUS thickness <5 mm (bias of 0.01, 95% CI -0.10 to 0.12 mm) whereas fLUS overestimated LUS <5 mm (bias of 0.93, 95% CI 0.80-1.06 mm). Successful vaginal birth rate correlated with increasing mLUS values (odds ratio 1.30, 95% CI 1.03-1.64). Twelve cases of uterine defect were recorded. LUS measurement ≤2.0 mm was associated with an increased risk of uterine defects with a sensitivity of 91.7% (95% CI 61.5-99.8%) and specificity of 81.8% (95% CI 75.8-86.8%).
    CONCLUSIONS: Accurate TVUS measurement of the LUS is technically feasible in a resource-limited setting. This approach could help in making safer decisions on mode of birth in limited-resource settings.
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  • 文章类型: Journal Article
    鉴于剖宫产子宫切除术治疗胎盘植入谱(PAS)的并发症风险较高,任何手术方法和技术都可以降低手术发病率。这里,我们建议将3-2-1方法作为一种模式,在适当的环境中实施PAS剖宫产子宫切除术.3-2-1方法从三个解剖标志的手术解剖开始,最终有助于子宫血管结扎和横切的安全手术部位。第一步是确定三个解剖标志,即(i)子宫下段腹膜后去血清化,(ii)侧面识别输尿管,和(iii)膀胱前剥离术。从后到前的进展避免了手术早期在子宫下段的致密粘连和血管过多。Further,允许更好地动员子宫,以识别横向和前部的解剖标志。第二步是部署双手技术,外科医生将一只手向前放置,另一只手向后放置在胎盘床下方的子宫下段中。外科医生将双手与弯曲的手指垂直于子宫组织,轻轻地将子宫和胎盘从骨盆中抬起,并确保与周围结构的安全解剖距离。第三步是考虑宫颈上子宫切除术。总之,这种3-2-1方法反映了PAS中子宫下段扩大的解剖结构,是一种逐步的模式,可以帮助外科医生完成剖宫产子宫切除术。以改善手术结果为目标。
    Given the high risk of complications associated with cesarean hysterectomy for placenta accreta spectrum (PAS), any surgical approach and technique can yield utility in reducing the surgical morbidity. Here, we propose the 3-2-1 approach as a schema to be implemented in the proper setting for the surgical management of a PAS cesarean hysterectomy. The 3-2-1 approach begins with the surgical dissection of three anatomical landmarks that ultimately facilitate a safe surgical site for the ligation and transection of the uterine vessels. First-step is identification of the three anatomical landmarks which are (i) posterior lower uterine segment peritoneum de-serosalization, (ii) identification of the ureters laterally, and (iii) anterior bladder dissection. Posterior-to-anterior progression avoids encountering dense adhesions and hypervascularity in the anterior lower uterine segment early in the surgery. Further, allows better mobilization of the uterus to identify the anatomical landmarks laterally and anteriorly. Second-step is to deploy the 2-hand technique where the surgeon places one hand anteriorly and the other hand posteriorly in the lower uterine segment below the placental bed. The surgeon brings both hands together with flexed fingers perpendicular to the uterine tissue and gently elevates the uterus and placenta out of the pelvis and ensures safe anatomical distance to surrounding structures. Third-step is the consideration of a supracervical hysterectomy. In summary, this 3-2-1 approach to reflect the anatomy of enlarged lower uterine segment in PAS is a stepwise schema that can aid surgeons in the completion of a cesarean hysterectomy, with the goal to improve surgical outcomes.
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  • 文章类型: Journal Article
    背景:有限的数据提示子宫内膜癌累及子宫下段(LUSI)可能与其他不良预后因素有关。我们评估了LUSI对子宫内膜癌预后的影响。
    方法:生物学:在2002-2022年间进行手术分期后,对病理样本进行了修订,并从患者记录中收集了临床数据。比较和分析了有和没有LUSI的女性的特征和结果。KaplanMeyer存活曲线比较了总存活期(OS)和无进展存活期(PFS)。
    结果:包括429名女性,其中45人(10.5%)患有LUSI。在人口统计学或临床特征方面,两组之间未发现差异。LUSI与淋巴血管间隙侵犯显著相关(40%vs.22%p=0.01),淋巴结受累(6.4%vs.9.1%,p=0.05),较短的PFS(4vs.5.5年,p=0.01)和OS(5.6vs.11.5年,p=0.03)。多变量分析显示OS和PFS的风险比更高(分别为1.5595CI0.79-3.04和1.2995CI0.66-2.53),但即使在子宫内膜样组织学的亚分析中,这些风险比也不重要(分别为1.7695CI0.89-3.46和1.3595CI0.69-2.65)。所有病例的KaplanMeyer存活曲线显示了PFS和OS下降的趋势(对数秩检验p分别为0.5和0.29),子宫内膜样组织学(对数秩检验p分别为0.06和0.51)和早期疾病(对数秩检验p分别为0.63和0.3)。
    结论:LUSI可能与子宫内膜癌预后较差有关,并且可能是考虑辅助治疗时需要考虑的另一个因素。尤其是子宫内膜样型和早期疾病。
    BACKGROUND: Limited data suggests lower uterine segment involvement (LUSI) in endometrial cancer may be associated with other poor prognostic factors. We assessed the unclear impact of LUSI on prognosis in endometrial cancer.
    METHODS: ology: A revision of pathological samples following surgical staging between the years 2002-2022 was performed and clinical data collected from patients\' records. Characteristics and outcomes of women with and without LUSI were compared and analysed. Kaplan Meyer survival curves compared overall survival (OS) and progression-free survival (PFS).
    RESULTS: 429 women were included, of which 45 (10.5%) had LUSI. No differences were found between the groups regarding demographic or clinical characteristics. LUSI was significantly associated with lympho-vascular space invasion (40% vs. 22% p = 0.01), lymph node involvement (6.4% vs. 9.1%, p = 0.05), shorter PFS (4 vs. 5.5 years, p = 0.01) and OS (5.6 vs. 11.5 years, p = 0.03). Multivariate analysis showed higher hazard ratios for OS and PFS (1.55 95%CI 0.79-3.04 and 1.29 95%CI 0.66-2.53, respectively) but these were insignificant even in a sub-analysis of endometrioid histology (1.76 95%CI 0.89-3.46 and 1.35 95%CI 0.69-2.65, respectively). A trend towards decreased PFS and OS was demonstrated in the Kaplan Meyer survival curves for all cases (log rank test p = 0.5 and 0.29 respectively), endometrioid histology (log rank test p = 0.06 and 0.51 respectively) and early-stage disease (log rank test p = 0.63 and 0.3 respectively).
    CONCLUSIONS: LUSI may be related to poorer outcome of endometrial cancer and may represent an additional factor to consider when contemplating adjuvant treatment, especially in endometrioid-type and early-stage disease.
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  • 文章类型: Journal Article
    该研究旨在证明一种创新的止血技术在子宫下段S.Rao螺旋缝合术(SRSS)治疗前置胎盘和植入频谱中的有效性和安全性。
    在Nishtar医科大学妇产科第二单元进行的这项回顾性研究中,Multan在2018年12月至2021年1月期间,对一百三十名同意的患者的临床记录进行了评估,并采用了主要程度的前置胎盘/胎盘植入谱,选择操作或在紧急情况下出现,有或没有剖宫产史。入选患者接受了SRSS,手术的有效性和安全性通过产科子宫切除术的数量来衡量,手术所需的时间,估计失血量,输血量,需要任何其他止血技术,膀胱外伤,盆腔感染,瘢痕部位血肿或脓肿,脓毒症,住院时间和孕产妇死亡率。
    在130名患者中,17人(12.6%)有胎盘植入,86(66.3%),和27(21%)Percreta。胎盘位置在102例(78.4%)中占前部,在17例(8.4%)中占后部。在接受手术的病人中,由于未控制的出血,只有2例需要产科子宫切除术。127名患者的手术时间为3至5分钟,3名患者的手术时间为5至7分钟。关于术中输血,54.6%的患者输血1000-2000毫升,和5.38%需要>3000毫升。任何患者术后均不需要输血。产后出血,感染,发烧,术后未在任何患者中观察到脓毒症。没有患者遭受膀胱损伤。所有患者均按常规出院。
    SRSS是一种创新,安全,有效,前置胎盘和Accreta频谱患者的简单缝合技术。
    UNASSIGNED: The study aimed to demonstrate the efficacy and safety of an innovative hemostatic technique in managing Placenta Previa and Accreta Spectrum by S. Rao Spiral Suturing (SRSS) of a lower uterine segment.
    UNASSIGNED: In this retrospective study conducted at Department of Obstetrics & Gynecology Unit-II of Nishtar Medical University, Multan between December 2018 to January 2021, one hundred and thirty consenting patients\' clinical records were reviewed with major degree placenta previa/placenta accrete spectrum, either operated electively or presented in an emergency, with or without a history of previous cesarean section. The enrolled patients underwent SRSS, procedure\'s efficacy and safety were measured by the number of obstetrical hysterectomies, the time required for the procedure, estimated blood loss, blood transfusion volume, need for any other hemostatic technique, bladder trauma, pelvic infection, scar site hematoma or abscess, sepsis, duration of hospital stay and maternal mortality.
    UNASSIGNED: Out of 130 patients, 17(12.6%) had Placenta Accreta, 86(66.3%) Increta, and 27(21%) Percreta. The Placenta location was anterior dominant in 102(78.4%) cases and posterior in 17(8.4%). Of the patients who underwent surgery, only two required obstetrical hysterectomy due to uncontrolled bleeding. The procedure took three to five minutes in 127 patients and five to seven minutes in three patients. Regarding intraoperative blood transfusion, 54.6% of patients were transfused 1000-2000 ml blood, and 5.38% required > 3000 ml. No blood transfusion was required postoperatively in any patient. Postpartum hemorrhage, infection, fever, and sepsis were not observed in any patient postoperatively. None of the patients suffered bladder injury. All patients were discharged as per routine.
    UNASSIGNED: SRSS is an innovative, safe, effective, and simple suturing technique for patients with Placenta Previa and Accreta spectrum.
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  • 文章类型: Journal Article
    准确的经阴道超声(TVU)宫颈长度(CL)对于获得早产(PTB)的最佳预测至关重要。当没有看到子宫下段(LUS)收缩(CTX)时,应最佳地获得TVUCL。对于大约20周的通用TVUCL筛查,选择是在膀胱空后立即进行TVU(这种方法的16-43%存在LUSCTX),或等待直到解剖扫描结束(理想情况下在膀胱排尿后30分钟内),以减少LUSCTX的机会。如果LUSCTX在等待20分钟或更长时间后仍然存在,仅应报告真实的TVUCL。特别是在先前有自发性PTB的患者中,如果LUSCTX持续存在,即使存在正常(>25mm)CL,TVUCL也可以在7天或更短时间内重复。就像血压袖带必须具有合适的尺寸以进行适当的BP测量一样,血糖仪必须正确校准,使用TVUCL进行筛查只能遵循适当和标准化的技术,包括尽可能避免LUSCTX的存在。
    An accurate transvaginal ultrasound cervical length is paramount to obtain the best prediction for preterm birth. Transvaginal ultrasound cervical length should be optimally obtained when a lower uterine segment contraction is not seen. For universal transvaginal ultrasound cervical length screening at approximately 20 weeks of gestation, the options are to do the transvaginal ultrasound soon after bladder void (lower uterine segment contractions present in 16%-43% of this approach) or to wait until the end of the anatomy scan (ideally within 30 minutes after bladder voiding) to decrease the chance of a lower uterine segment contraction. If the lower uterine segment contraction persists even after waiting up to 20 minutes or more, only the true transvaginal ultrasound cervical length should be reported. In particular, in patients with a previous spontaneous preterm birth, if the lower uterine segment contraction persists, the transvaginal ultrasound cervical length can be repeated in ≤7 days even in the presence of a normal (>25 mm) cervical length. Similar to a blood pressure cuff that must be of the right size for proper blood pressure measurement and a glucometer that must be properly calibrated, screening with transvaginal ultrasound cervical length should only be performed following a proper and standardized technique, including avoiding as much as feasible the presence of lower uterine segment contractions.
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  • 文章类型: Journal Article
    子宫是一个高度神经支配的器官,在分娩过程中,这种神经支配处于最高水平。氧化纤维素纤维在分娩和分娩中起着重要作用,特别是,子宫下段,子宫颈,和眼底都是由运动神经纤维控制的。催产素是一种神经激素,作用于位于子宫肌层光滑细胞膜上的受体。在劳动和分娩阶段,它的结合导致肌纤维收缩,这使得子宫底可以充当中介。这项研究的目的是调查在90名患者的队列中,延长和非延长的分娩难中存在催氧纤维。在第一和第二阶段进行评估。收集子宫肌层组织样本并通过电子显微镜进行评估,为了量化研究和对照组患者之间神经纤维浓度的差异。该实验的作者表明,在非延长和延长的阵痛传递之间,催氧能纤维的浓度不同。特别是,在长时间的分娩中,与非长期分娩困难相比,催产素纤维含量较低。催产素的增加在经历了长时间分娩困难的患者中似乎无效。因为在这组患者中检测到的催产素能纤维的存在改变导致分娩困难。
    The uterus is a highly innervated organ, and during labor, this innervation is at its highest level. Oxytocinergic fibers play an important role in labor and delivery and, in particular, the Lower Uterine Segment, cervix, and fundus are all controlled by motor neurofibers. Oxytocin is a neurohormone that acts on receptors located on the membrane of the smooth cells of the myometrium. During the stages of labor and delivery, its binding causes myofibers to contract, which enables the fundus of the uterus to act as a mediator. The aim of this study was to investigate the presence of oxytocinergic fibers in prolonged and non-prolonged dystocic delivery in a cohort of 90 patients, evaluated during the first and second stages of labor. Myometrial tissue samples were collected and evaluated by electron microscopy, in order to quantify differences in neurofibers concentrations between the investigated and control cohorts of patients. The authors of this experiment showed that the concentration of oxytocinergic fibers differs between non-prolonged and prolonged dystocic delivery. In particular, in prolonged dystocic delivery, compared to non-prolonged dystocic delivery, there is a lower amount of oxytocin fiber. The increase in oxytocin appeared to be ineffective in patients who experienced prolonged dystocic delivery, since the dystocic labor ended as a result of the altered presence of oxytocinergic fibers detected in this group of patients.
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  • 文章类型: Journal Article
    背景:经阴道超声成像已成为产前评估子宫下段和子宫颈解剖结构的重要工具,但关于经阴道超声在处理出生时胎盘植入频谱高危患者中的作用的数据有限。
    目的:本研究的目的是评估妊娠晚期经阴道超声检查在预测出生时胎盘植入谱概率高的患者结局中的作用。
    方法:这是一项前瞻性收集的单胎妊娠患者资料的回顾性分析,至少有一次既往剖宫产史,并在产前诊断为前低位/前置胎盘,32周后择期分娩.所有患者在分娩前两周内进行了至少一次详细的超声检查,包括经腹和经阴道扫描。两位经验丰富的操作员,在不了解临床数据的情况下,我们要求对胎盘植入谱的可能性进行判断:胎盘植入谱的可能性低或高,并预测主要手术结局(保守性与围产期子宫切除术).当一个或多个胎盘子叶在分娩时或在子宫切除术或部分子宫肌层切除术标本的大体检查期间不能与子宫壁数字分离时,就可以确认植入胎盘的诊断。
    结果:本研究共纳入111例患者。出生时胎盘组织附着异常76例(68.5%),组织学检查证实浅层绒毛附着(creta)和深层绒毛附着(intrta)11例和65例,分别。72例(64.9%)患者进行了围产期子宫切除术,其中13例由于未能重建子宫下段和/或出血过多而在出生时没有PAS的证据。经腹和经阴道超声检查的胎盘位置分布存在显着差异(X2=12.66;p=0.002),但两种超声技术在识别出生时确认的植入胎盘方面具有相似的可能性得分。经腹扫描,只有较高的腔隙评分与子宫切除术的机会增加显著相关(p=0.02),而在经阴道扫描中发现子宫切除术的需要与子宫下段远端部分的厚度显著相关(p=0.003),子宫颈结构的变化(p=0.01),子宫颈血管增加(p=0.001),和胎盘腔隙的存在(p=0.005)。对于非常薄(<1mm)的远端子宫下段,围产期子宫切除术的比值比为5.01(95CI1.25;20.1),以及5.62(95CI1.41;22.5)3+腔隙评分。
    结论:经阴道超声检查有助于有或没有提示PAS超声征象的CD病史患者的产前管理和手术结果预测。经阴道超声检查子宫下段和子宫颈应纳入临床方案,以术前评估有复杂剖宫产风险的患者,在影像学上有或没有提示PAS的迹象。
    Transvaginal ultrasound imaging has become an essential tool in the prenatal evaluation of the lower uterine segment and anatomy of the cervix, but there are only limited data on the role of transvaginal ultrasound in the management of patients at high risk of placenta accreta spectrum at birth.
    This study aimed to evaluate the role of transvaginal sonography in the third trimester of pregnancy in predicting outcomes in patients with a high probability of placenta accreta spectrum at birth.
    This was a retrospective analysis of prospectively collected data of patients presenting with a singleton pregnancy and a history of at least 1 previous cesarean delivery and patients diagnosed prenatally with an anterior low-lying placenta or placenta previa delivered electively after 32 weeks of gestation. All patients had a least 1 detailed ultrasound examination, including transabdominal and transvaginal scans, within 2 weeks before delivery. Of note, 2 experienced operators, blinded to the clinical data, were asked to make a judgment on the likelihood of placenta accreta spectrum as a binary, low or high-probability of placenta accreta spectrum, and to predict the main surgical outcome (conservative vs peripartum hysterectomy). The diagnosis of accreta placentation was confirmed when one or more placental cotyledons could not be digitally separated from the uterine wall at delivery or during the gross examination of the hysterectomy or partial myometrial resection specimens.
    A total of 111 patients were included in the study. Abnormal placental tissue attachment was found in 76 patients (68.5%) at birth, and histologic examination confirmed superficial villous attachment (creta) and deep villous attachment (increta) in 11 and 65 cases, respectively. Of note, 72 patients (64.9%) had a peripartum hysterectomy, including 13 cases with no evidence of placenta accreta spectrum at birth because of failure to reconstruct the lower uterine segment and/or excessive bleeding. There was a significant difference in the distribution of placental location (X2=12.66; P=.002) between transabdominal and transvaginal ultrasound examinations, but both ultrasound techniques had similar likelihood scores in identifying accreta placentation that was confirmed at birth. On transabdominal scan, only a high lacuna score was significantly associated (P=.02) with an increased chance of hysterectomy, whereas on transvaginal scan, significant associations were found between the need for hysterectomy and the thickness of the distal part of the lower uterine segment (P=.003), changes in the cervix structure (P=.01), cervix increased vascularity (P=.001), and the presence of placental lacunae (P=.005). The odds ratio for peripartum hysterectomy were 5.01 (95% confidence interval, 1.25-20.1) for a very thin (<1-mm) distal lower uterine segment and 5.62 (95% confidence interval, 1.41-22.5) for a lacuna score of 3+.
    Transvaginal ultrasound examination contributes to both prenatal management and the prediction of surgical outcomes in patients with a history of previous cesarean delivery with and without ultrasound signs suggestive of placenta accreta spectrum. Transvaginal ultrasound examination of the lower uterine segment and cervix should be included in clinical protocols for the preoperative evaluation of patients at risk of complex cesarean delivery.
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  • 文章类型: Letter
    目的:我们的目的是确定是否大肌瘤,特别是那些尺寸超过10厘米的,与产后出血(PPH)有关。目前,关于超声和PPH.1-5的各种纤维瘤特征之间的关系的数据有限。number,或位置增加PPH需要充血红细胞输血(PPH+PRBC)的风险。
    方法:回顾性队列研究所有单胎妊娠和肌瘤患者,在≥18周时进行产前超声检查,他从2019年至2022年在纽约一个大型卫生系统内的七家医院分娩。如果患者在研究期间有多次分娩,只有第一个被纳入分析。超声检查由注册诊断医学超声医师(RDMS)进行,其发现由母胎医学主治医师进行审查。收集了肌瘤特征,包括尺寸,number,和位置。纤维组织大小分类为小(<5厘米),中等(5-10厘米),和大(>10厘米)。主要结果是PPH+PRBC。采用多因素logistic回归分析子宫肌瘤特征与PPH+PRBC的相关性,调整子宫手术史和入院分娩时的血红蛋白水平。
    结果:共纳入4,421例患者。PPH+PRBC的总发生率为4.5%(201/4,421)。小,中等,大肌瘤占64.9%(2,868/4,421),30.5%(1,347/4,421),和4.7%(206/4,421)的怀孕,分别,PPH+PRBC的相应发生率为3.5%(99/2,868),6.1%(82/1,347),和9.7%(20/206),分别。大多数患者(61.7%,2,726/4,421)只有一个记录在案的纤维瘤。患者较少(16.0%,707/4,421)的肌瘤位于子宫下段或子宫颈。未调整和调整的结果示于表中。与小肌瘤患者相比,患有中型和大型肌瘤的患者更可能经历PPHPRBC的1.65倍(95%CI1.19-2.29)和2.44倍(95%CI1.41-4.23),分别。子宫下段或子宫颈有肌瘤的患者与该位置无肌瘤的患者相比,PPH+PRBC的可能性是其1.49倍(95%CI1.05-2.13)。在校正混杂因素后,肌瘤数量和前肌瘤位置与结果无关。
    结论:子宫下段或子宫颈的纤维瘤大小和位置,但不是数字,与PPH+PRBC相关。这种产科急诊的风险随着肌瘤大小的增加而增加。
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