RESUMEN
INTRODUCTION: Neonatal resuscitation may require urgent umbilical venous catheter (UVC) placement. Complications can be observed with umbilical venous catheterization, especially in a stressful context. Inspired by the aeronautic environment, medical routine checklists, also called "cognitive aids," secure the equipment and environment for the patients once they are admitted to the operating room. We hypothesized that reading a cognitive aid for UVC placement in the delivery room during neonatal resuscitation simulation scenarios can (a) improve the performance in reducing catheterization duration and (b) can limit complications. METHODS: This was a prospective single-center randomized study. A total of 23 dyads for a simulation scenario were included: 12 in the control group and 11 in the cognitive aid group. In the cognitive aid group, the cognitive aid was read by the same facilitator for every scenario. RESULTS: No significant difference concerning the duration of the procedure was identified between the cognitive aid and control groups: 412 s [342; 420] vs. 374 s [338;402], respectively (p = 0.781). Nevertheless, there were significantly fewer deviations from hygiene guidelines and improved prevention of air embolism in the cognitive aid group compared with the control group. CONCLUSION: The UVC insertion time was similar between the control and cognitive aid groups. Moreover, cognitive aid can limit infectious complications or air embolism by allowing caregivers to follow UVC placement standards.
Asunto(s)
Venas Umbilicales , Humanos , Estudios Prospectivos , Recién Nacido , Femenino , Masculino , Cateterismo Periférico/métodos , Cateterismo Periférico/efectos adversos , Entrenamiento Simulado/métodos , Resucitación/métodos , Adulto , Lista de VerificaciónRESUMEN
PURPOSE: To elucidate the association between arterial and venous Doppler ultrasound parameters and the risk of secondary cesarean delivery for intrapartum fetal compromise (IFC) and neonatal acidosis in small-for-gestational-age (SGA) fetuses. METHODS: This single-center, prospective, blinded, cohort study included singleton pregnancies with an estimated fetal weight (EFW) < 10th centile above 36 gestational weeks. Upon study inclusion, all women underwent Doppler ultrasound, including umbilical artery (UA) pulsatility index (PI), middle cerebral artery (MCA) PI, fetal aortic isthmus (AoI) PI, umbilical vein blood flow (UVBF), and modified myocardial performance index (mod-MPI). Primary outcome was defined as secondary cesarean section due to IFC. RESULTS: In total, 87 SGA pregnancies were included, 16% of which required a cesarean section for IFC. Those fetuses revealed lower UVBF corrected for abdominal circumference (AC) (5.2 (4.5-6.3) vs 7.2 (5.5-8.3), p = 0.001). There was no difference when comparing AoI PI, UA PI, ACM PI, or mod-MPI. No association was found for neonatal acidosis. After multivariate logistic regression, UVBF/AC remained independently associated with cesarean section due to IFC (aOR 0.61 [0.37; 0.91], p = 0.03) and yielded an area under the curve (AUC) of 0.78 (95% CI, 0.67-0.89). A cut-off value set at the 50th centile of UVBF/AC reached a sensitivity of 86% and specificity of 58% for the occurrence of cesarean section due to IFC (OR 8.1; 95% CI, 1.7-37.8, p = 0.003). CONCLUSION: Low levels of umbilical vein blood flow (UVBF/AC) were associated with an increased risk among SGA fetuses to be delivered by cesarean section for IFC.
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Cesárea , Recién Nacido Pequeño para la Edad Gestacional , Arteria Cerebral Media , Ultrasonografía Doppler , Ultrasonografía Prenatal , Arterias Umbilicales , Humanos , Femenino , Embarazo , Estudios Prospectivos , Adulto , Arterias Umbilicales/diagnóstico por imagen , Arteria Cerebral Media/diagnóstico por imagen , Arteria Cerebral Media/embriología , Recién Nacido , Acidosis , Venas Umbilicales/diagnóstico por imagen , Flujo Pulsátil , Sufrimiento Fetal/diagnóstico por imagen , Retardo del Crecimiento Fetal/diagnóstico por imagen , Peso FetalRESUMEN
INTRODUCTION: Citral is a low-toxicity monoterpene that has a vasodilator effect on various smooth muscles, and The present study aimed to evaluate its vasorelaxant effect on umbilical vessels of normotensive parturients (NTP) and with preeclampsia parturients (PEP). METHOD: Segments of human umbilical artery (HUA) and vein (HUV) of NTP or PEP were mounted in a bath to record the force of contraction, under tension of 3.0 gf and contracted with the contracting agents: K+ (60 mM), 5 -HT (10 µM) and Ba2+ (1-30 mM). Next, the effect of citral (1-3000 µM) on these contractions and on basal tone was evaluated. RESULTS: In HUA and HUV, citral (1-1000 µM), in NTP condition, inhibited contractions evoked by K+ (IC50 of 413.5 and 271.3, respectively) and by 5-HT (IC50 of 164.8 and 574.3). In the PEP condition, in HUA and HUV, citral also inhibited the contractions evoked by K+ (IC50 of 363.3 and 218.3, respectively) and 5-HT (IC50 of 432.1 and 520.4). At a concentration of 1000 µM, citral completely or almost completely (>90 %) inhibited all contractions. At a concentration of 100-1000 µM, citral, in general, was already able to reduce the contraction induced by 1-3 mM Ba2+ in both AUH and VUH, under NTP and PEP conditions. DISCUSSION: Citral has been shown to be an effective HUA and HUV vasodilator in NTP and PEP. As its toxicity is low, it suggests that this substance can be considered a potential therapeutic agent.
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Monoterpenos Acíclicos , Monoterpenos , Preeclampsia , Arterias Umbilicales , Vasodilatadores , Humanos , Femenino , Embarazo , Preeclampsia/fisiopatología , Monoterpenos Acíclicos/farmacología , Monoterpenos/farmacología , Arterias Umbilicales/efectos de los fármacos , Adulto , Vasodilatadores/farmacología , Venas Umbilicales/efectos de los fármacos , Vasodilatación/efectos de los fármacosRESUMEN
INTRODUCTION: To evaluate the maternal and fetal hemodynamic effects of treatment with a nitric oxide donor and oral fluid in pregnancies complicated by fetal growth restriction. METHODS: 30 normotensive participants with early fetal growth restriction were enrolled. 15 participants were treated until delivery with transdermal glyceryl trinitrate and oral fluid intake (Treated group), and 15 comprised the untreated group. All women underwent non-invasive assessment of fetal and maternal hemodynamics and repeat evaluation 2 weeks later. RESULTS: In the treated group, maternal hemodynamics improved significantly after two weeks of therapy compared to untreated participants. Fetal hemodynamics in the treated group showed an increase in umbilical vein diameter by 18.87 % (p < 0.01), in umbilical vein blood flow by 48.16 % (p < 0.01) and in umbilical vein blood flow corrected for estimated fetal weight by 30.03 % (p < 0.01). In the untreated group, the characteristics of the umbilical vein were unchanged compared to baseline. At the same time, the cerebro-placental ratio increased in the treated group, while it was reduced in the untreated group, compared to baseline values. The treated group showed a higher birthweight centile (p = 0.03) and a lower preeclampsia rate (p = 0.04) compared to the untreated group. DISCUSSION: The combined therapeutic approach with nitric oxide donor and oral fluid intake in fetal growth restriction improves maternal hemodynamics, which becomes more hyperdynamic (volume-dominant). At the same time, in the fetal circuit, umbilical vein flow increased and fetal brain sparing improved. Although a modest sample size, there was less preeclampsia and a higher birthweight suggesting beneficial maternal and fetal characteristics of treatment.
Asunto(s)
Retardo del Crecimiento Fetal , Donantes de Óxido Nítrico , Venas Umbilicales , Humanos , Femenino , Retardo del Crecimiento Fetal/metabolismo , Retardo del Crecimiento Fetal/fisiopatología , Embarazo , Proyectos Piloto , Donantes de Óxido Nítrico/farmacología , Donantes de Óxido Nítrico/administración & dosificación , Adulto , Nitroglicerina/farmacología , Nitroglicerina/administración & dosificación , Hemodinámica/efectos de los fármacos , Feto/irrigación sanguínea , Feto/metabolismo , Adulto Joven , Oxígeno/metabolismo , Oxígeno/sangreRESUMEN
Intrauterine growth restriction (IUGR) is a common complication of pregnancy. We previously demonstrated that IUGR is associated with an impaired nitric oxide (NO)-induced relaxation in the human umbilical vein (HUV) of growth-restricted females compared to appropriate for gestational age (AGA) newborns. We found that phosphodiesterase (PDE) inhibition improved NO-induced relaxation in HUV, suggesting that PDEs could represent promising targets for therapeutic intervention. This study aimed to investigate the effects of PDE inhibition on human umbilical arteries (HUAs) compared to HUV. Umbilical vessels were collected in IUGR and AGA term newborns. NO-induced relaxation was studied using isolated vessel tension experiments in the presence or absence of the nonspecific PDE inhibitor 3-isobutyl-1-methylxanthine (IBMX). PDE1B, PDE1C, PDE3A, PDE4B, and PDE5A were investigated by Western blot. NO-induced vasodilation was similar between IUGR and AGA HUAs. In HUAs precontracted with serotonin, IBMX enhanced NO-induced relaxation only in IUGR females, whereas in HUV IBMX increased NO-induced relaxation in all groups except IUGR males. In umbilical vessels preconstricted with the thromboxane A2 analog U46619, IBMX improved NO-induced relaxation in all groups to a greater extent in HUV than HUAs. However, the PDE protein content was higher in HUAs than HUV in all study groups. Therefore, the effects of PDE inhibition depend on the presence of IUGR, fetal sex, vessel type, and vasoconstrictors implicated. Despite a higher PDE protein content, HUAs are less sensitive to IBMX than HUV, which could lead to adverse effects of PDE inhibition in vivo by impairment of the fetoplacental hemodynamics.NEW & NOTEWORTHY The effects of phosphodiesterase inhibition on the umbilical circulation depend on the presence of intrauterine growth restriction, the fetal sex, vessel type, and vasoconstrictors implicated. The human umbilical vascular tone regulation is complex and depends on the amount and activity of specific proteins but also probably on the subcellular organization mediating protein interactions. Therefore, therapeutic interventions using phosphodiesterase inhibitors to improve the placental-fetal circulation should consider fetal sex and both umbilical vein and artery reactivity.
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Retardo del Crecimiento Fetal , Óxido Nítrico , Inhibidores de Fosfodiesterasa , Arterias Umbilicales , Venas Umbilicales , Vasodilatación , Humanos , Femenino , Arterias Umbilicales/efectos de los fármacos , Masculino , Vasodilatación/efectos de los fármacos , Vasodilatación/fisiología , Venas Umbilicales/efectos de los fármacos , Inhibidores de Fosfodiesterasa/farmacología , Retardo del Crecimiento Fetal/tratamiento farmacológico , Retardo del Crecimiento Fetal/fisiopatología , Óxido Nítrico/metabolismo , Embarazo , Recién Nacido , Fosfodiesterasas de Nucleótidos Cíclicos Tipo 5/metabolismo , 1-Metil-3-Isobutilxantina/farmacología , Factores Sexuales , Hidrolasas Diéster Fosfóricas/metabolismoRESUMEN
OBJECTIVES: To assess the risk of intrauterine fetal death (IUFD) and fetal growth restriction (FGR) in fetuses with an isolated fetal intra-abdominal umbilical vein varix (i-FIUVV). METHODS: A retrospective cohort study combined with a systematic review and meta-analysis of the literature was performed. In the retrospective cohort study, all singleton fetuses with an i-FIUVV in the fetal medicine units of the Amsterdam UMC (between 2007 and 2023) were analyzed. The primary outcome measures were IUFD and FGR. The sample proportions of IUFD and FGR were depicted as risk percentages. The IUFD proportion was compared to the regional reference population and the FGR proportion was compared to the reported proportions in Europe. The secondary outcome measures were gestational age at diagnosis, initial and maximal FIUVV diameter, fetal monitoring in pregnancy, turbulent flow in the varix, thrombus formation in the varix, induction of labor, gestational age at birth, and birthweight centile. The proportion of fetuses with a birthweight below the 10th centile was compared with that of the regional reference population. The systematic review included all cases from eligible literature published between 2007 and 2023 supplemented by the data of our retrospective cohort study. In the systematic review and meta-analysis, the pooled proportions of IUFD and FGR were assessed in fetuses with i-FIUVV. RESULTS: The retrospective cohort included 43 singletons with an i-FIUVV. The IUFD risk was 0% [Confidence Interval, CI: 0%-8.2%], which did not differ significantly from 0.3% in the reference population, p = 1.0. The risk of FGR was 16.3% [CI: 6.8%-30.7%] in the studied population, which is higher than the reported incidence of FGR in Europe ranging from 5%-10%. The proportion of fetuses with birthweights below the 10th centile was higher in our cohort compared with the reference population (23.3 vs. 9.9%, p < 0.01). The systematic review included 12 articles, three abstracts, and our current cohort. In total, 513 cases with an i-FIUVV were included. The pooled risk was 0.4% [CI: 0.1%-1.7%] for IUFD and 5.2% [CI: 1.1%-21.3%] for FGR. The mean gestational age at birth did not exceed 39 weeks in neither the cohort (38.7 weeks) nor the pooled literature (37.6 weeks). CONCLUSION: An i-FIUVV in singletons is not associated with an increased IUFD risk up to 39 weeks of gestation but is possibly associated with FGR. The incidence of FGR in our cohort was higher than in the pooled literature (16.3% vs. 5%) but FGR definitions in the included studies varied. The proportion of birthweights below the 10th percentile in our cohort was significantly higher than in the reference group. Thus, based on these findings, we suggest conducting sonographic growth assessments while simultaneously assessing the i-FIUVV. No further monitoring and follow-up are indicated up to 39 weeks of gestation. After 39 weeks of gestation, data on fetuses with i-FIUVV and their outcomes are lacking.
Asunto(s)
Muerte Fetal , Retardo del Crecimiento Fetal , Venas Umbilicales , Várices , Adulto , Femenino , Humanos , Embarazo , Estudios de Cohortes , Muerte Fetal/etiología , Retardo del Crecimiento Fetal/epidemiología , Edad Gestacional , Estudios Retrospectivos , Ultrasonografía Prenatal , Venas Umbilicales/diagnóstico por imagen , Várices/epidemiología , Várices/diagnóstico por imagenRESUMEN
PURPOSE: Fetal intra-abdominal umbilical vein varix (FIUVV) can cause thrombosis, fetal growth restriction (FGR), and intrauterine fetal death (IUFD). However, its management and evaluation to avoid fetal risks have not been elucidated. The aim of this study was to develop a novel method to evaluate fetal risks, including FGR and fetal dysfunction via frequent ultrasound examinations. METHODS: A 28-year-old pregnant woman was diagnosed with FIUVV via ultrasound at 26 weeks of gestation and admitted to our hospital. Ultrasound examinations were performed two to three times weekly to evaluate size and shape of the FIUVV and umbilical vein blood flow at the inflow and outflow sites of the FIUVV. RESULTS: The outflow site of the FIUVV was constricted and collapsed, and the blood flow velocity at the inflow site of the FIUVV was decreased. At 32 weeks of gestation, spontaneous echo contrast (SEC), which indicates increased echogenicity, appeared. At 35 weeks of gestation, the patient noticed decreased fetal movement, and CTG showed non-reassuring fetal status. SEC in the FIUVV was remarkable. Fetal movement could not be confirmed at ultrasound. Cesarean section was performed and a 1,854-g healthy infant was delivered with an umbilical cord arterial pH of 7.266. CONCLUSION: The echographic changes, such as decreased umbilical vein blood flow and SEC, in FIUVV observed in this case could indicate thrombus formation, which can lead to fetal dysfunction. Frequent ultrasound examinations can help determine the timing of delivery and improve the neonatal prognosis.
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Ultrasonografía Prenatal , Venas Umbilicales , Várices , Humanos , Femenino , Venas Umbilicales/diagnóstico por imagen , Venas Umbilicales/fisiopatología , Embarazo , Adulto , Ultrasonografía Prenatal/métodos , Várices/diagnóstico por imagen , Várices/embriología , Várices/fisiopatología , Trombosis/diagnóstico por imagen , Trombosis/fisiopatología , Velocidad del Flujo Sanguíneo , Enfermedades Fetales/diagnóstico por imagenRESUMEN
BACKGROUND: Umbilical catheters are commonly inserted in newborns in the neonatal intensive care unit (NICU) yet are associated with serious adverse events (AEs) such as malposition, migration, infection, thrombosis, hepatic complications, cardiac effusion, and cardiac tamponade. There is a need to determine the incidence and risk factors for AEs to inform safe practice. OBJECTIVES: The objective of this study was to determine the incidence and risk factors for AEs (all-cause and individual types) associated with umbilical venous catheters (UVCs) and umbilical arterial catheters (UACs) in the NICU. METHODS: A retrospective cohort study was conducted in an Australian level-VI NICU over a 3-year period. Any newborn who had both a UVC and UAC insertion attempt was included. RESULTS: There were 236 neonates who had 494 catheters (245 UVCs and 249 UACs). Of these, 71% of UVCs (95% confidence interval [CI]: 65.6-76.9%; incidence rate: 181.1-237.3 per 1000 catheter days) and 43.8% of UACs (95% CI: 38-50.5%; incidence rate: 102.0-146.3 per 1000 catheter days) were associated with an AE. The most common AE was malposition on first X-ray for UVCs (60.1%, 95% CI: 55.1-67.3) and UACs (32.6%, 95% CI: 26.8-39.6). A dwell time of ≥7 days was a significant predictor of UAC failure (incidence risk ratio: 1.5, 95% CI: 1.1-2.1, p = 0.006) and migration of the UVC (incidence risk ratio: 3.5, 95% CI: 1.0-11.5, p = 0.043). CONCLUSION: Adverse events related to insertion occurred in a relatively high percentage of umbilical catheters placed. Increased dwell time remains a significant risk factor for catheter migration and overall failure. Practice change and consideration of risk factors for both individual and overall AE risk are necessary to reduce complications.
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Unidades de Cuidado Intensivo Neonatal , Venas Umbilicales , Humanos , Estudios Retrospectivos , Recién Nacido , Femenino , Masculino , Factores de Riesgo , Incidencia , Arterias Umbilicales , Australia/epidemiología , Cateterismo Periférico/efectos adversosRESUMEN
INTRODUCTION: Neonatal portal vein thrombosis (PVT) is frequently related to umbilical venous catheterization (UVC), but risk factors remain unclear. This study aims to analyze the variables associated to PVT in near- to full-term newborns with UVC, with a focus on newborns exposed to controlled therapeutic hypothermia (CTH) for hypoxic ischemic encephalopathy (HIE). METHODS: This is retrospective cohort study of infants delivered at or after 36 weeks and with a birthweight over 1,500 g. All infants were assessed for UVC location and PVT using ultrasonography performed between day 5 and day 10 after catheterization. RESULTS: Among 213 eligible patients, PVT was diagnosed in 57 (27%); among them, 54 (95%) were localized in the left portal vein branch. With all significant factors in univariate analysis considered, higher gestational age at birth (adjusted OR 1.35; 95% CI: 1.12-1.64, p = 0.002) and duration of UVC placement (adjusted OR 1.36; 95% CI: 1.11-1.67, p = 0.004) were the main risk factors of PVT. Among 87 infants who were cooled for HIE, 31 (36%) had PVT compared to 26 (21%) in infants without CTH. Using a multivariate model including variables linked to treatment procedures only, an increased PVT incidence was statistically associated with UVC duration (adjusted OR 1.33; 95% CI: 1.08; 1.63, p = 0.01) and CTH (adjusted OR 1.94; 95% CI: 1.04-3.65, p = 0.04). CONCLUSION: Left PVT was frequently observed in near- to full-term neonates with UVC. Among factors linked to treatment procedures, both duration of UVC and CTH exposure for HIE were found to be independent risk factors of PVT.
Asunto(s)
Asfixia Neonatal , Edad Gestacional , Hipotermia Inducida , Vena Porta , Venas Umbilicales , Trombosis de la Vena , Humanos , Recién Nacido , Estudios Retrospectivos , Femenino , Vena Porta/diagnóstico por imagen , Venas Umbilicales/diagnóstico por imagen , Masculino , Trombosis de la Vena/etiología , Trombosis de la Vena/epidemiología , Factores de Riesgo , Asfixia Neonatal/terapia , Asfixia Neonatal/complicaciones , Hipotermia Inducida/efectos adversos , Hipoxia-Isquemia Encefálica/etiología , Hipoxia-Isquemia Encefálica/terapia , Ultrasonografía , Cateterismo Periférico/efectos adversosRESUMEN
INTRODUCTION: There is variability in clinical practice regarding the number of radiographic views required to accurately determine umbilical venous catheter (UVC) tip position. Some units prefer performing a single anteroposterior (AP) view and others do both AP and lateral views. The aim of this study was to compare the need for one versus two radiographical views to accurately determine UVC tip position. METHODS: Radiographs of 382 infants (all gestations) from two level six neonatal units were included in the study. Patients with congenital anomalies and those who had adjustment of UVC position between AP and lateral films being performed were excluded. Six clinicians reviewed anonymized AP only images and documented UVC tip position. Subsequently, they reviewed both AP and lateral views and again documented the UVC tip position. Results were compared to the expert consensus which was taken from the consensus of two paediatric radiologists. RESULTS: The study population had a mean gestational age of 32.8 weeks and birth weight of 2190 g, with 58% males. The UVC tip positions were accurately determined 76% times by the AP view alone and 82% times by using both the AP and lateral views (P < 0.001). The low placed UVC tip position which is the most inappropriate for use was more accurately determined by two images (78% times) rather than single image (70% times) (P < 0.001). CONCLUSIONS: Utilising both AP and lateral views was superior in accurately determining UVC tip position to AP view alone.
Asunto(s)
Venas Umbilicales , Humanos , Recién Nacido , Estudios Retrospectivos , Venas Umbilicales/diagnóstico por imagen , Masculino , FemeninoRESUMEN
PURPOSE: Exposure to procedures varies in the neonatal intensive care unit (NICU). A method to teach procedures should be available without patient availability, expert oversight, or simulation laboratories. To fill this need, we developed a virtual reality (VR) simulation for umbilical vein catheter (UVC) placement and sought to establish its face and content validity and usability. METHODS: Engineers, software developers, graphic designers, and neonatologists developed a VR UVC placement simulator following a participatory design approach. The software was deployed on the Meta Quest 2 head-mounted display (HMD). Neonatal nurse practitioners (NNPs) from a level 4 NICU used the simulator and completed an 11-item questionnaire to establish face and content validity. Participants also completed the validated simulation task load index and system usability scale to assess the usability of the simulator. Group 1 tested the VR simulation, which was optimized based on feedback, prior to Group 2's participation. RESULTS: A total of 14 NNPs with 2-37 years of experience participated in testing. Participants scored the content and face validity of the simulator highly, with most giving scores ≥ 4/5. Usability was established with relatively high average system usability scores for both groups (Group 1: 67.14 ± 7.8, Group 2: 71 ± 14.1) and low SIM-TLX scores indicating manageable load while using the simulator. CONCLUSION: After optimization, Group 2 found the UVC simulator to be realistic and effective. Both groups felt the simulator was easy to use and did not cause physical or cognitive strain. All participants felt the UVC simulator provided a safe environment to make mistakes, and the majority would recommend this experience to trainees.
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Venas Umbilicales , Realidad Virtual , Humanos , Recién Nacido , Entrenamiento Simulado/métodos , Interfaz Usuario-Computador , Cateterismo Periférico/métodos , Femenino , Masculino , Encuestas y Cuestionarios , Unidades de Cuidado Intensivo Neonatal , Adulto , Simulación por ComputadorRESUMEN
This is part of a series of articles on vascular access in emergencies. The other two articles were on intra osseous lines and central venous lines. These are critical lifesaving emergency skills for the primary care professional. In this article, we will provide an overview of umbilical vein catheterisation highlighting its importance, the indications, contraindications, techniques, complications and nursing considerations. By familiarising healthcare providers with this procedure, we hope to enhance their knowledge and skills, ultimately leading to improved outcomes in the neonatal population.
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Cateterismo , Médicos de Familia , Humanos , Recién Nacido , Cateterismo/métodos , Infusiones Intraóseas/métodos , Atención Primaria de Salud , Venas UmbilicalesRESUMEN
PURPOSE: To evaluate the type of umbilical-portal anastomosis in late-onset fetal growth restriction (LO-FGR) and appropriate for gestational age (AGA) fetuses. To investigate the impact of the type of umbilical-portal anastomosis on the adverse outcomes in LO-FGR. METHOD: This study observed 150 pregnancies with AGA fetuses and 62 pregnancies with fetuses with LO-FGR. In each case, the point of reference for measuring the abdominal circumference was established. The type of umbilical-portal anastomosis was evaluated as T-shaped, X-shaped, and H-shaped according to the shape of main portal vein and portal sinus. Incidences of the type of umbilical-portal anastomosis in AGA and LO-FGR fetuses were evaluated. RESULTS: T-shaped anastomosis was the most common (56.7%) in the AGA group and X-shaped (66.1%) in the LO-FGR group. In LO-FGR, T-shape anastomosis was significantly lower and X-shape anastomosis was significantly higher than AGA (p < 0.001). X-shaped anastomosis was associated with LO-FGR and the RR was 2.3 (95% CI 1.5-3.6; p < 0.001). Incidences of admission to NICU and emergency C/S for fetal distress were higher in fetuses with X -shaped anastomosis in the LO-FGR (p < 0.05). CONCLUSION: X-shaped umbilical-portal anastomosis have a prognostic significance in LO-FGR fetuses.
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Retardo del Crecimiento Fetal , Vena Porta , Ultrasonografía Prenatal , Humanos , Retardo del Crecimiento Fetal/diagnóstico por imagen , Femenino , Embarazo , Estudios de Casos y Controles , Ultrasonografía Prenatal/métodos , Adulto , Vena Porta/anomalías , Vena Porta/cirugía , Vena Porta/diagnóstico por imagen , Vena Porta/embriología , Venas Umbilicales/diagnóstico por imagen , Venas Umbilicales/cirugía , Edad GestacionalRESUMEN
OBJECTIVES: To investigate midbrain growth, including corpus callusum (CC) and cerebellar vermis (CV) and cortical development in late fetal growth restricted (FGR) subclassified according to the umbilical vein blood flow (UVBF) values. METHODS: This was a prospective study on singleton fetuses late FGR with abnormal placental cerebral ratio (PCR). FGR fetuses were further subdivided into normal (≥fifth centile) and abnormal (Asunto(s)
Retardo del Crecimiento Fetal
, Mesencéfalo
, Ultrasonografía Prenatal
, Venas Umbilicales
, Humanos
, Femenino
, Retardo del Crecimiento Fetal/diagnóstico por imagen
, Retardo del Crecimiento Fetal/fisiopatología
, Embarazo
, Estudios Prospectivos
, Estudios Transversales
, Venas Umbilicales/diagnóstico por imagen
, Adulto
, Ultrasonografía Prenatal/métodos
, Mesencéfalo/diagnóstico por imagen
, Mesencéfalo/irrigación sanguínea
, Mesencéfalo/embriología
, Desarrollo Fetal/fisiología
, Corteza Cerebral/diagnóstico por imagen
, Corteza Cerebral/irrigación sanguínea
, Corteza Cerebral/embriología
RESUMEN
OBJECTIVE: The aim of this study was to describe the anatomy of the portal system in fetuses with persistent right umbilical vein (PRUV). METHODS: Prospective observational study of fetuses diagnosed with PRUV. All patients underwent a comprehensive portal system anatomy scan supplemented by two-dimensional (2D) and three-dimensional (3D) color doppler modalities. RESULTS: 29 fetuses with PRUV were studied. We perceived an identical anatomical pattern in 28 fetuses. The right umbilical vein drains to the portal sinus (future right portal vein, RPV), which has a configuration of a left portal vein (LPV) in the normal left portal system, with three emerging branches: inferior (RPVi), medial (RPVm) and superior (RPVs). The RPV then courses to the left, towards the stomach to the point of the bifurcation of the main portal vein (MPV) to become the left portal vein. The LPV has an RPV configuration in a normal portal system with anterior (LPVa) and posterior (RPVp) branches. This anatomical layout mimics a mirror image of the normal anatomy of left portal system. CONCLUSION: PRUV has unique umbilical portal venous anatomy, which is a mirror image of the normal left portal system. It can be demonstrated prenatally and serve as an additional tool for prenatal diagnosis of PRUV.
Asunto(s)
Abdomen , Fumaratos , Estearatos , Ultrasonografía Prenatal , Embarazo , Femenino , Humanos , Venas Umbilicales/diagnóstico por imagen , Ultrasonografía Prenatal/métodos , Diagnóstico Prenatal , Vena Porta/diagnóstico por imagenRESUMEN
INTRODUCTION: Umbilical vein catheterization (UVC) can cause portal venous thrombosis, leading to the development of extrahepatic portal venous obstruction (EHPVO) and portal hypertension (PHT). The feasibility of the Meso-Rex bypass (MRB) for the treatment of EHPVO in patients with a history of UVC has been questioned. We compared the feasibility of performing an MRB in patients with or without a history of previous UVC. METHODS: A retrospective review of patients with EHPVO and known UVC status explored for a possible MRB at our institution was performed (1997-2022). Patients were categorized in two groups: with (UVC(+)) or without (UVC(-)) a history of UVC for comparison. A p-value less than 0.05 was considered significant. RESULTS: One hundred and eighty-seven patients were included (n = 57 in UVC(+); n = 130 in UVC(-)). Patients in the UVC group were significantly younger at surgery and the incidence of prematurity was higher. Other risk factors for the development of EHPVO were similar between the groups, but only history of UVC could predict the ability to receive MRB (odds ratio [OR]: 7.4 [3.5-15.4]; p < 0.001). The success rate of MRB was significantly higher in patients with no history of UVC (28/57 [49.1%] in UVC(+) vs. 114/130 [87.7%] in UVC(-); p < 0.001). However, MRB patency at discharge (25/28 [89.3%] in UVC(+) vs. 106/114 [94.7%] in UVC(-); p = 0.3) was equally high in both groups. CONCLUSION: Our results indicate that a history of UVC is not a contraindication to MRB. Half of the patients were able to successfully receive an MRB. Patients with symptomatic PHT from EHPVO should not be excluded from consideration for MRB based on UVC history.
Asunto(s)
Hipertensión Portal , Trombosis de la Vena , Niño , Humanos , Vena Porta/cirugía , Venas Umbilicales , Hipertensión Portal/etiología , Hipertensión Portal/cirugía , Cateterismo/efectos adversosRESUMEN
BACKGROUND: Isolated agenesis of ductus venosus (ADV) is usually a benign condition, but it may be associated with cardiovascular defects, hydrops, growth restriction, and chromosomal abnormalities. Additionally, persistent left superior vena cava (PLSVC) and bovine aortic arch are relatively common fetal anomalies. To the author's knowledge, this is the first report of prenatal detection of DV agenesis and PLSVC associated with the postnatal bovine aortic arch with a hypoplastic transverse aortic arch. CASE: A 25-year-old, G2P1 woman was referred to our department at 31 weeks due to fetal growth restriction and short femur. On fetal echocardiography, DV could not be viewed via two-dimensional (2D) and Doppler ultrasound (US) imaging; there was also evidence of the co-occurrence of PLSVC and an aortic arch anomaly. We revealed the intrahepatic continuation of the umbilical vein. A weekly follow-up program was scheduled for the patient and the rest of the pregnancy was uneventful. Postnatal, thorax computer tomography and transthoracic echocardiography (TTE) demonstrated PLSVC and bovine aortic arch associated with hypoplastic transverse aortic arch. Routine echocardiographic examinations revealed that the blood flow of the aortic arch had increased gradually, and the male infant's aortic arch had significantly widened and reached the normal range until the baby was discharged from the hospital. CONCLUSION: DV agenesis and PLSVC are usually benign conditions but underlying serious heart diseases may accompany them. Therefore, in situations like ours, a prenatal aortic arch evaluation is of capital importance. Postnatal hemodynamic changes should be taken into consideration in the management of these cases. This is the first example in the literature that these abnormalities co-existed in one case.