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1.
J Midwifery Womens Health ; 68(3): 353-363, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37073545

RESUMEN

INTRODUCTION: This study seeks to understand the experiences of Utah midwives and doulas caring for patients during the recent coronavirus disease 2019 (COVID-19) pandemic. Specifically, the goal of the study was to describe the perceived impact on the community birth system and explore differences in the access and use of personal protective equipment (PPE) between in- and out-of-hospital births. METHODS: This study used a cross-sectional, descriptive study design. A 26-item survey developed by the research team was sent via email to Utah birth workers, including nurse-midwives, community midwives, and doulas. Quantitative data were collected during December 2020 and January 2021. Descriptive statistics were used in the analysis. RESULTS: Of the 409 birth workers who were sent a link to the survey, 120 (30%) responded: 38 (32%) CNMs, 30 (25%) direct-entry or community midwives, and 52 (43%) doulas. The majority (79%) reported changes to clinical practice during the COVID-19 pandemic. Community midwives (71%) who responded indicated practice volume increased. Survey participants reported an increased patient preference for home births (53%) and birth center births (43%). Among those with one or more patient transfers to the hospital, 61% experienced a change in the process. One participant reported that it took 43 minutes longer to transfer to the hospital. Community midwives and doulas reported poor access to a regular source of PPE. DISCUSSION: Survey participants reported changes to planned birth locations during the COVID-19 pandemic. When necessary, transfers to hospitals were reported to be slower. Community midwives and doulas reported having insufficient access to PPE and reported limited knowledge about COVID-19 testing resources and resources for educating patients on COVID-19. This study adds an important perspective to the existing literature on COVID-19 by indicating that policymakers should include community birth partners in community planning for natural disasters and future pandemics.


Asunto(s)
COVID-19 , Doulas , Partería , Embarazo , Femenino , Humanos , COVID-19/epidemiología , Utah/epidemiología , Prueba de COVID-19 , Pandemias , Estudios Transversales
2.
Am J Obstet Gynecol ; 228(2): 217.e1-217.e14, 2023 02.
Artículo en Inglés | MEDLINE | ID: mdl-35970202

RESUMEN

BACKGROUND: Delayed cord clamping and umbilical cord milking provide placental transfusion to vigorous newborns. Delayed cord clamping in nonvigorous newborns may not be provided owing to a perceived need for immediate resuscitation. Umbilical cord milking is an alternative, as it can be performed more quickly than delayed cord clamping and may confer similar benefits. OBJECTIVE: We hypothesized that umbilical cord milking would reduce admission to the neonatal intensive care unit compared with early cord clamping in nonvigorous newborns born between 35 and 42 weeks' gestation. STUDY DESIGN: This was a pragmatic cluster-randomized crossover trial of infants born at 35 to 42 weeks' gestation in 10 medical centers in 3 countries between January 2019 and May 2021. The centers were randomized to umbilical cord milking or early cord clamping for approximately 1 year and then crossed over for an additional year or until the required number of consented subjects was reached. Waiver of consent as obtained in all centers to implement the intervention. Infants were eligible if nonvigorous at birth (poor tone, pale color, or lack of breathing in the first 15 seconds after birth) and were assigned to umbilical cord milking or early cord clamping according to their birth hospital randomization assignment. The baseline characteristics and outcomes were collected following deferred informed consent. The primary outcome was admission to the neonatal intensive care unit for predefined criteria. The main safety outcome was hypoxic-ischemic encephalopathy. Data were analyzed by the intention-to-treat concept. RESULTS: Among 16,234 screened newborns, 1780 were eligible (905 umbilical cord milking, 875 early cord clamping), and 1730 had primary outcome data for analysis (97% of eligible; 872 umbilical cord milking, 858 early cord clamping) either via informed consent (606 umbilical cord milking, 601 early cord clamping) or waiver of informed consent (266 umbilical cord milking, 257 early cord clamping). The difference in the frequency of neonatal intensive care unit admission using predefined criteria between the umbilical cord milking (23%) and early cord clamping (28%) groups did not reach statistical significance (modeled odds ratio, 0.69; 95% confidence interval, 0.41-1.14). Umbilical cord milking was associated with predefined secondary outcomes, including higher hemoglobin (modeled mean difference between umbilical cord milking and early cord clamping groups 0.68 g/dL, 95% confidence interval, 0.31-1.05), lower odds of abnormal 1-minute Apgar scores (Apgar ≤3, 30% vs 34%, crude odds ratio, 0.72; 95% confidence interval, 0.56-0.92); cardiorespiratory support at delivery (61% vs 71%, modeled odds ratio, 0.57; 95% confidence interval, 0.33-0.99), and therapeutic hypothermia (3% vs 4%, crude odds ratio, 0.57; 95% confidence interval, 0.33-0.99). Moderate-to-severe hypoxic-ischemic encephalopathy was significantly less common with umbilical cord milking (1% vs 3%, crude odds ratio, 0.48; 95% confidence interval, 0.24-0.96). No significant differences were observed for normal saline bolus, phototherapy, abnormal 5-minute Apgar scores (Apgar ≤6, 15.7% vs 18.8%, crude odds ratio, 0.81; 95% confidence interval, 0.62-1.06), or a serious adverse event composite of death before discharge. CONCLUSION: Among nonvigorous infants born at 35 to 42 weeks' gestation, umbilical cord milking did not reduce neonatal intensive care unit admission for predefined criteria. However, infants in the umbilical cord milking arm had higher hemoglobin, received less delivery room cardiorespiratory support, had a lower incidence of moderate-to-severe hypoxic-ischemic encephalopathy, and received less therapeutic hypothermia. These data may provide the first randomized controlled trial evidence that umbilical cord milking in nonvigorous infants is feasible, safe and, superior to early cord clamping.


Asunto(s)
Enfermedades del Recién Nacido , Clampeo del Cordón Umbilical , Cordón Umbilical , Femenino , Humanos , Recién Nacido , Embarazo , Transfusión Sanguínea , Constricción , Estudios Cruzados , Hemoglobinas , Hipoxia-Isquemia Encefálica/etiología , Recien Nacido Prematuro , Placenta , Cordón Umbilical/cirugía , Clampeo del Cordón Umbilical/métodos , Enfermedades del Prematuro/cirugía , Enfermedades del Prematuro/terapia , Enfermedades del Recién Nacido/cirugía , Enfermedades del Recién Nacido/terapia
3.
Elife ; 92020 08 27.
Artículo en Inglés | MEDLINE | ID: mdl-32851975

RESUMEN

Retinoic acid-related orphan receptor beta (RORß) is a transcription factor (TF) and marker of layer 4 (L4) neurons, which are distinctive both in transcriptional identity and the ability to form aggregates such as barrels in rodent somatosensory cortex. However, the relationship between transcriptional identity and L4 cytoarchitecture is largely unknown. We find RORß is required in the cortex for L4 aggregation into barrels and thalamocortical afferent (TCA) segregation. Interestingly, barrel organization also degrades with age in wildtype mice. Loss of RORß delays excitatory input and disrupts gene expression and chromatin accessibility, with down-regulation of L4 and up-regulation of L5 genes, suggesting a disruption in cellular specification. Expression and binding site accessibility change for many other TFs, including closure of neurodevelopmental TF binding sites and increased expression and binding capacity of activity-regulated TFs. Lastly, a putative target of RORß, Thsd7a, is down-regulated without RORß, and Thsd7a knock-out alone disrupts TCA organization in adult barrels.


Asunto(s)
Neuronas , Miembro 2 del Grupo F de la Subfamilia 1 de Receptores Nucleares , Corteza Somatosensorial , Animales , Antígenos de Superficie/química , Antígenos de Superficie/genética , Antígenos de Superficie/metabolismo , Femenino , Masculino , Proteínas de la Membrana/química , Proteínas de la Membrana/genética , Proteínas de la Membrana/metabolismo , Ratones , Ratones Noqueados , Neuronas/química , Neuronas/citología , Neuronas/metabolismo , Miembro 2 del Grupo F de la Subfamilia 1 de Receptores Nucleares/química , Miembro 2 del Grupo F de la Subfamilia 1 de Receptores Nucleares/genética , Miembro 2 del Grupo F de la Subfamilia 1 de Receptores Nucleares/metabolismo , Corteza Somatosensorial/química , Corteza Somatosensorial/citología , Corteza Somatosensorial/metabolismo , Corteza Somatosensorial/fisiología , Tálamo/química , Tálamo/metabolismo , Factores de Transcripción/química , Factores de Transcripción/genética , Factores de Transcripción/metabolismo , Transcriptoma/genética
4.
Front Pediatr ; 2: 120, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-25414842

RESUMEN

OBJECTIVE: Chronic neurological deficits are a significant complication of preterm birth. Magnesium supplementation has been suggested to have neuroprotective function in the developing brain. Our objective was to determine whether higher neonatal serum magnesium levels were associated with better long-term neurodevelopmental outcomes in very-low birth weight infants. STUDY DESIGN: A retrospective cohort of 75 preterm infants (<1500 g, gestational age <27 weeks) had follow-up for the outcomes of abnormal motor exam and for epilepsy. Average total serum magnesium level in the neonate during the period of prematurity was the main independent variable assessed, tested using a Wilcoxon rank-sum test. RESULTS: Higher average serum magnesium level was associated with a statistically significant decreased risk for abnormal motor exam (p = 0.037). A lower risk for epilepsy in the group with higher magnesium level did not reach statistical significance (p = 0.06). CONCLUSION: This study demonstrates a correlation between higher neonatal magnesium levels and decreased risk for long-term abnormal motor exam. Larger studies are needed to evaluate the hypothesis that higher neonatal magnesium levels can improve long-term neurodevelopmental outcomes.

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