Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 82
Filtrar
Más filtros

Banco de datos
Tipo del documento
Intervalo de año de publicación
1.
N Engl J Med ; 383(27): 2639-2651, 2020 12 31.
Artículo en Inglés | MEDLINE | ID: mdl-33382931

RESUMEN

BACKGROUND: Limited data suggest that higher hemoglobin thresholds for red-cell transfusions may reduce the risk of cognitive delay among extremely-low-birth-weight infants with anemia. METHODS: We performed an open, multicenter trial in which infants with a birth weight of 1000 g or less and a gestational age between 22 weeks 0 days and 28 weeks 6 days were randomly assigned within 48 hours after delivery to receive red-cell transfusions at higher or lower hemoglobin thresholds until 36 weeks of postmenstrual age or discharge, whichever occurred first. The primary outcome was a composite of death or neurodevelopmental impairment (cognitive delay, cerebral palsy, or hearing or vision loss) at 22 to 26 months of age, corrected for prematurity. RESULTS: A total of 1824 infants (mean birth weight, 756 g; mean gestational age, 25.9 weeks) underwent randomization. There was a between-group difference of 1.9 g per deciliter (19 g per liter) in the pretransfusion mean hemoglobin levels throughout the treatment period. Primary outcome data were available for 1692 infants (92.8%). Of 845 infants in the higher-threshold group, 423 (50.1%) died or survived with neurodevelopmental impairment, as compared with 422 of 847 infants (49.8%) in the lower-threshold group (relative risk adjusted for birth-weight stratum and center, 1.00; 95% confidence interval [CI], 0.92 to 1.10; P = 0.93). At 2 years, the higher- and lower-threshold groups had similar incidences of death (16.2% and 15.0%, respectively) and neurodevelopmental impairment (39.6% and 40.3%, respectively). At discharge from the hospital, the incidences of survival without severe complications were 28.5% and 30.9%, respectively. Serious adverse events occurred in 22.7% and 21.7%, respectively. CONCLUSIONS: In extremely-low-birth-weight infants, a higher hemoglobin threshold for red-cell transfusion did not improve survival without neurodevelopmental impairment at 22 to 26 months of age, corrected for prematurity. (Funded by the National Heart, Lung, and Blood Institute and others; TOP ClinicalTrials.gov number, NCT01702805.).


Asunto(s)
Anemia/terapia , Transfusión de Eritrocitos , Hemoglobinas/análisis , Recien Nacido con Peso al Nacer Extremadamente Bajo/sangre , Recien Nacido Extremadamente Prematuro/sangre , Enfermedades del Prematuro/terapia , Trastornos del Neurodesarrollo/prevención & control , Algoritmos , Anemia/sangre , Anemia/mortalidad , Parálisis Cerebral/prevención & control , Trastornos del Conocimiento/prevención & control , Transfusión de Eritrocitos/efectos adversos , Pérdida Auditiva/prevención & control , Humanos , Recién Nacido/sangre , Recien Nacido Prematuro/sangre , Enfermedades del Prematuro/sangre , Enfermedades del Prematuro/mortalidad , Tasa de Supervivencia , Trastornos de la Visión/prevención & control
2.
J Pediatr ; 253: 165-172.e1, 2023 02.
Artículo en Inglés | MEDLINE | ID: mdl-36181871

RESUMEN

OBJECTIVE: The objective of this study was to document the practices and preferences of neonatal care stakeholders regarding location and duration of care for newborns with low illness acuity. STUDY DESIGN: We developed a survey instrument that comprised 14 questions across 2 global scenarios and 7 specific clinical conditions. The latter included apnea of prematurity, gestational age for neonatal intensive care unit admission, jaundice, neonatal opioid withdrawal, thermoregulation, and sepsis evaluation. Respondents reported their current practice and preferences for an alternative approach. We administered the survey to individuals in the membership email distribution lists of the American Academy of Pediatrics Section on Neonatal-Perinatal Medicine, the National Association of Neonatal Nurses, and the Vermont Oxford Network. RESULTS: Of 2284 respondents, 53% believed that infants were, in general, admitted to a higher level of care than was required, and only 13% reported that the level of care was too low. Length of stay was perceived to be generally too long by 46% of respondents and too short by 21%. Across 10 specific clinical questions, there was substantial variability in current practice and up to 35% of respondents reported discordance between current and preferred practice. These respondents preferred a lower level of care in 8 of 10 scenarios. CONCLUSIONS: A multidisciplinary sample of US clinicians reported significant variation in the level and duration of care for infants with low illness acuity. Among individuals reporting discordance between current and preferred practice, a majority believed that current management could be accomplished in a lower level of care location.


Asunto(s)
Recien Nacido Prematuro , Unidades de Cuidado Intensivo Neonatal , Lactante , Recién Nacido , Humanos , Niño , Edad Gestacional , Cuidados Críticos , Encuestas y Cuestionarios
3.
J Pediatr ; 245: 72-80.e6, 2022 06.
Artículo en Inglés | MEDLINE | ID: mdl-35304168

RESUMEN

OBJECTIVE: To describe the trend in costs over 10 years for tertiary-level neonatal care of infants born 220/7-286/7 weeks of gestation during an ongoing Canadian national quality improvement project. STUDY DESIGN: Clinical characteristics, outcomes, and third-party payor costs for the tertiary neonatal care of infants born 220/7-286/7 weeks of gestation between the years 2010 and 2019 were analyzed from the Canadian Neonatal Network database. Costs were estimated using resource use data from the Canadian Neonatal Network and cost inputs from hospitals, physician billing, and administrative databases in Ontario, Canada. Cost estimates were adjusted to 2017 Canadian dollars (CAD). A generalized linear mixed-effects model with gamma regression was used to estimate trends in costs. RESULTS: Between 2010 and 2019, the number of infants born <24 weeks of gestation increased from 4.4% to 7.7%. The average length of stay increased from 68 days to 75 days. Unadjusted average ± SD total costs per neonate were $120 717 ± $93 062 CAD in 2010 and $132 774 ± $93 161 CAD in 2019. After adjustment for year, center, and gestation, total costs and length of stay increased significantly, by $13 612 CAD (P < .01) and 8.1 days (P < .01) over 10 years, respectively; whereas costs accounting for LOS remained stable. CONCLUSIONS: The total costs and length of stay for infants 220/7-286/7 weeks of gestation have increased over the past decade in Canada during an ongoing national quality improvement initiative; however, there was an increase in the number and survival of neonates at the age of periviability.


Asunto(s)
Enfermedades del Prematuro , Cuidado Intensivo Neonatal , Canadá , Femenino , Edad Gestacional , Humanos , Lactante , Recién Nacido , Recien Nacido Prematuro , Unidades de Cuidado Intensivo Neonatal , Ontario , Embarazo , Estudios Retrospectivos
4.
BMC Pediatr ; 22(1): 27, 2022 01 07.
Artículo en Inglés | MEDLINE | ID: mdl-34996401

RESUMEN

BACKGROUND: Black very low birth weight (VLBW; < 1500 g birth weight) and very preterm (VP, < 32 weeks gestational age, inclusive of extremely preterm, < 28 weeks gestational age) infants are significantly less likely than other VLBW and VP infants to receive mother's own milk (MOM) through to discharge from the neonatal intensive care unit (NICU). The costs associated with adhering to pumping maternal breast milk are borne by mothers and contribute to this disparity. This randomized controlled trial tests the effectiveness and cost-effectiveness of an intervention to offset maternal costs associated with pumping. METHODS: This randomized control trial will enroll 284 mothers and their VP infants to test an intervention (NICU acquires MOM) developed to facilitate maternal adherence to breast pump use by offsetting maternal costs that serve as barriers to sustaining MOM feedings and the receipt of MOM at NICU discharge. Compared to current standard of care (mother provides MOM), the intervention bundle includes three components: a) free hospital-grade electric breast pump, b) pickup of MOM, and c) payment for opportunity costs. The primary outcome is infant receipt of MOM at the time of NICU discharge, and secondary outcomes include infant receipt of any MOM during the NICU hospitalization, duration of MOM feedings (days), and cumulative dose of MOM feedings (total mL/kg of MOM) received by the infant during the NICU hospitalization; maternal duration of MOM pumping (days) and volume of MOM pumped (mLs); and total cost of NICU care. Additionally, we will compare the cost of the NICU acquiring MOM versus NICU acquiring donor human milk if MOM is not available and the cost-effectiveness of the intervention (NICU acquires MOM) versus standard of care (mother provides MOM). DISCUSSION: This trial will determine the effectiveness of an economic intervention that transfers the costs of feeding VLBWand VP infants from mothers to the NICU to address the disparity in the receipt of MOM feedings at NICU discharge by Black infants. The cost-effectiveness analysis will provide data that inform the adoption and scalability of this intervention. TRIAL REGISTRATION: ClinicalTrials.gov: NCT04540575 , registered September 7, 2020.


Asunto(s)
Leche Humana , Madres , Lactancia Materna/métodos , Femenino , Humanos , Lactante , Recién Nacido , Recién Nacido de muy Bajo Peso , Unidades de Cuidado Intensivo Neonatal , Ensayos Clínicos Controlados Aleatorios como Asunto
5.
J Pediatr ; 231: 74-80, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-33338495

RESUMEN

OBJECTIVE: To determine associations between a graded approach to intravenous (IV) dextrose treatment for neonatal hypoglycemia and changes in blood glucose (BG), length of stay (LOS), and cost of care. STUDY DESIGN: Retrospective cohort study of 277 infants born at ≥35 weeks of gestation in an urban academic delivery hospital, comparing the change in BG after IV dextrose initiation, neonatal intensive care unit (NICU) LOS, and cost of care in epochs before and after a hospital protocol change. During epoch 1, all infants who needed IV dextrose for hypoglycemia were given a bolus and started on IV dextrose at 60 mL/kg/day. During epoch 2, infants received IV dextrose at 30 or 60 mL/kg/day based on the degree of hypoglycemia. Differences in BG outcomes, LOS, and cost of hospital care between epochs were compared using adjusted median regression. RESULTS: In epoch 2, the median (IQR) rise in BG after initiating IV dextrose (19 [10, 31] mg/dL) was significantly lower than in epoch 1 (24 [14,37] mg/dL; adjusted ß = -6.0 mg/dL, 95% CI -11.2, -0.8). Time to normoglycemia did not differ significantly between epochs. NICU days decreased from a median (IQR) of 4.5 (2.1, 11.0) to 3.0 (1.5, 6.5) (adjusted ß = -1.9, 95% CI -3.0, -0.7). Costs associated with NICU hospitalization decreased from a median (IQR) $14 030 ($5847, $30 753) to $8470 ($5650, $19 019) (adjusted ß = -$4417, 95% CI -$571, -$8263) after guideline implementation. CONCLUSIONS: A graded approach to IV dextrose was associated with decreased BG lability and length and cost of NICU stay for infants with neonatal hypoglycemia.


Asunto(s)
Glucemia/metabolismo , Glucosa/administración & dosificación , Costos de Hospital/estadística & datos numéricos , Hipoglucemia/tratamiento farmacológico , Unidades de Cuidado Intensivo Neonatal/estadística & datos numéricos , Tiempo de Internación/estadística & datos numéricos , Edulcorantes/administración & dosificación , Administración Intravenosa , Biomarcadores/sangre , Boston , Esquema de Medicación , Femenino , Glucosa/economía , Glucosa/uso terapéutico , Humanos , Hipoglucemia/sangre , Hipoglucemia/diagnóstico , Hipoglucemia/economía , Recién Nacido , Unidades de Cuidado Intensivo Neonatal/economía , Tiempo de Internación/economía , Masculino , Estudios Retrospectivos , Edulcorantes/economía , Edulcorantes/uso terapéutico , Resultado del Tratamiento
6.
Pediatr Res ; 89(4): 940-951, 2021 03.
Artículo en Inglés | MEDLINE | ID: mdl-32541844

RESUMEN

BACKGROUND: The COVID-19 pandemic threatens global newborn health. We describe the current state of national and local protocols for managing neonates born to SARS-CoV-2-positive mothers. METHODS: Care providers from neonatal intensive care units on six continents exchanged and compared protocols on the management of neonates born to SARS-CoV-2-positive mothers. Data collection was between March 14 and 21, 2020. We focused on central protocol components, including triaging, hygiene precautions, management at delivery, feeding protocols, and visiting policies. RESULTS: Data from 20 countries were available. Disease burden varied between countries at the time of analysis. In most countries, asymptomatic infants were allowed to stay with the mother and breastfeed with hygiene precautions. We detected discrepancies between national guidance in particular regarding triaging, use of personal protection equipment, viral testing, and visitor policies. Local protocols deviated from national guidance. CONCLUSIONS: At the start of the pandemic, lack of evidence-based guidance on the management of neonates born to SARS-CoV-2-positive mothers has led to ad hoc creation of national and local guidance. Compliance between collaborators to share and discuss protocols was excellent and may lead to more consensus on management, but future guidance should be built on high-level evidence, rather than expert consensus. IMPACT: At the rapid onset of the COVID19 pandemic, all countries presented protocols in place for managing infants at risk of COVID19, with a certain degree of variations among regions. A detailed review of ad hoc guidelines is presented, similarities and differences are highlighted. We provide a broad overview of currently applied recommendations highlighting the need for international context-relevant coordination.


Asunto(s)
COVID-19/terapia , Pandemias , Guías de Práctica Clínica como Asunto , Lactancia Materna , COVID-19/epidemiología , COVID-19/fisiopatología , COVID-19/virología , Femenino , Humanos , Recién Nacido , Transmisión Vertical de Enfermedad Infecciosa/prevención & control , Embarazo , Complicaciones Infecciosas del Embarazo/fisiopatología , SARS-CoV-2/aislamiento & purificación
7.
J Pediatr ; 205: 272-276.e1, 2019 02.
Artículo en Inglés | MEDLINE | ID: mdl-30291023

RESUMEN

Up to 20% of newborn infants retro-transferred to a lower level of care require readmission to a higher-level facility. In this study, we developed and validated a prediction rule (The Rule for Elective Transfer between Units for Recovering Neonates [RETURN]) to identify clinical characteristics of infants at risk for failing retro-transfer.


Asunto(s)
Recien Nacido Prematuro , Unidades de Cuidado Intensivo Neonatal/estadística & datos numéricos , Salas Cuna en Hospital/estadística & datos numéricos , Transferencia de Pacientes/normas , Derivación y Consulta , Femenino , Estudios de Seguimiento , Humanos , Recién Nacido , Masculino , Pronóstico , Curva ROC , Estudios Retrospectivos
12.
J Perinatol ; 44(7): 1001-1008, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38589537

RESUMEN

OBJECTIVES: The authors sought to measure and compare practice preference variation in neonatal respiratory care within and between neonatal intensive care units (NICUs) using the Neonatology Survey of Interdisciplinary Groups in Healthcare Tool (NSIGHT). STUDY DESIGN: Eleven NICUs completed the NSIGHT between 2019 and 2021. Net preference was measured by mean response; agreement was ranked by standard distribution of response values. Heat maps showed comparisons between NICUs and disciplines. RESULTS: NICUs and individuals agreed most often on use of pressure support with mandatory ventilation and on use of non-invasive positive pressure ventilation for apnea. High preference variation surrounded decisions for invasive ventilation versus continuous positive airway pressure for extremely low birth weight infants. Preference difference was most frequent between neonatologists and nurses. CONCLUSIONS: Patterns of practice preference variation in neonatal respiratory care are specific to clinical scenario. Measuring preference variation may inform psychology of change and strengthen quality improvement efforts.


Asunto(s)
Unidades de Cuidado Intensivo Neonatal , Mejoramiento de la Calidad , Humanos , Recién Nacido , Unidades de Cuidado Intensivo Neonatal/normas , Pautas de la Práctica en Medicina/estadística & datos numéricos , Neonatología/normas , Síndrome de Dificultad Respiratoria del Recién Nacido/terapia , Encuestas y Cuestionarios , Presión de las Vías Aéreas Positiva Contínua
14.
J Pediatr ; 162(1): 50-5.e2, 2013 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-22854328

RESUMEN

OBJECTIVE: To measure the influence of varying mortality time frames on performance rankings among regional neonatal intensive care units (NICUs) in a large state. STUDY DESIGN: We performed a cross-sectional data analysis of very low birth weight infants receiving care at 24 level 3 NICUs. We tested the effect of 4 definitions of mortality: (1) death between admission and end of birth hospitalization or up to 366 days; (2) death between 12 hours of age and the end of birth hospitalization or up to 366 days; (3) death between admission and 28 days; and (4) death between 12 hours of age and 28 days. NICUs were ranked by quantifying their deviation from risk-adjusted expected mortality and dividing them into 3 tiers: top 6, bottom 6, and in between. RESULTS: There was wide interinstitutional variation in risk-adjusted mortality for each definition (observed minus expected z-score range, -6.08 to 3.75). However, mortality-based NICU rankings and classification into performance tiers were very similar for all institutions in each of our time frames. Among all 4 definitions, NICU rank correlations were high (>0.91). Few NICUs changed relative to a neighboring tier with changes in definitions, and none changed by more than one tier. CONCLUSION: The time frame used to ascertain mortality had little effect on comparative NICU performance.


Asunto(s)
Mortalidad Infantil , Recién Nacido de muy Bajo Peso , Unidades de Cuidado Intensivo Neonatal/normas , Calidad de la Atención de Salud/normas , Estudios Transversales , Femenino , Humanos , Recién Nacido , Masculino , Terminología como Asunto
15.
Am J Perinatol ; 30(8): 631-42, 2013 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-23283805

RESUMEN

OBJECTIVE: A previous multisite, randomized, controlled trial of peer support compared with usual care for prevention of postpartum depression demonstrated a reduction in depression symptoms at 12 weeks postbirth. Our objective was to determine the cost-effectiveness of this intervention. STUDY DESIGN: Prospectively planned economic evaluation alongside the clinical trial to determine the cost per case of postpartum depression averted, using individual patient data (n = 610) and societal perspective. All costs were expressed in 2011 Canadian dollars. RESULTS: The mean cost per woman was $4,497 in the peer support group and $3,380 in the usual care group (difference of $1,117, p < 0.0001). There was a 95% probability that the program would cost less than $20,196 per case of postpartum depression averted. CONCLUSIONS: Although this is a volunteer-based program, it results in a net cost to the health care system and society. However, this cost is within the range for other accepted interventions for this population.


Asunto(s)
Depresión Posparto/prevención & control , Servicios Preventivos de Salud/economía , Apoyo Social , Telemedicina/métodos , Canadá , Análisis Costo-Beneficio , Femenino , Humanos , Grupo Paritario , Embarazo , Estudios Prospectivos , Resultado del Tratamiento , Voluntarios
16.
Semin Perinatol ; 47(5): 151783, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-37380528

RESUMEN

We present a systematic scoping review of the literature, which documents that only a very small number of interventions related to delivery room stabilization and resuscitation have been studied for their economic impact. Published analyses are mostly of programmatic interventions such as resuscitation training programs, are mostly in low-resource settings, and are of variable methodological quality. Investigators who are conducting clinical studies of delivery room interventions can address these deficiencies in the literature by engaging with health services researchers to assess economic outcomes alongside those studies. We provide a framework of five questions that clinical researchers may use to decide on when such an ancillary study is indicated, and to provide them with the necessary language to discuss the methodological details of potential evaluations with their health services colleagues. Emphasis should be given to interventions that are targeted to high volumes of patients, are expensive, or are likely to lead to changes in costly chronic outcomes.


Asunto(s)
Análisis Costo-Beneficio , Resucitación , Humanos , Recién Nacido , Resucitación/economía
17.
J Clin Med ; 12(17)2023 Aug 23.
Artículo en Inglés | MEDLINE | ID: mdl-37685526

RESUMEN

Our objective was to evaluate whether pregnancy is prolonged by the use of a proteomics-based maternal serum screening test followed by treatment interventions. This is a secondary analysis of the PREVENT-PTB randomized trial comparing screening with the PreTRM test versus no screening. The primary trial analysis found no significant between-group difference in the preterm birth rate. Rather than considering a dichotomous outcome (preterm versus term), we treated gestational age at birth as a continuous variable using survival analysis. We also evaluated between-group difference in NICU length of stay and duration of respiratory support. Results indicated that pregnancy was significantly prolonged in subjects screened with the PreTRM test compared to controls (adjusted hazard ratio 0.53, 95% confidence interval 0.36-0.78, p < 0.01). Newborns of screened subjects had significantly shorter NICU stays but no significant decrease in duration of respiratory support. In the PreTRM screen-positive group, interventions that were associated with pregnancy prolongation included care management and low-dose aspirin but not 17-hydroxyprogesterone caproate. We conclude that screening with the PreTRM test followed by interventions for screen-positive pregnancies may prolong pregnancy and reduce NICU LOS, but these observations need to be confirmed by additional research.

18.
Arch Dis Child Fetal Neonatal Ed ; 108(5): 458-463, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-36270779

RESUMEN

OBJECTIVE: Survival rates of extremely premature infants are rising, but changes in neurodevelopmental impairment (NDI) rates are unclear. Our objective was to perform a systematic review of intrainstitutional variability of NDI over time. DESIGN: Systematic review and meta-analysis. DATA SOURCES: Ovid MEDLINE, Embase, PubMed, Cochrane Library and Google Scholar. STUDY SELECTION: Study eligibility: (1) at least two discrete cohorts of infants born <27 weeks' gestation or <1000 g birth weight, (2) one cohort born after 1990 and at least one subsequent cohort of similar gestational age, (3) all cohorts cared for within the same Neonatal Intensive Care Unit(s) (NICU) and (4) neurodevelopmental outcomes at 18-36 months corrected age. MAIN OUTCOME: Change in NDI rates. Quality, validity and bias were assessed using Grading of Recommendations, Assessment, Development, and Evaluation and Quality in Prognosis Studies guidelines. RESULTS: Of 203 publications, 15 were eligible, including 13 229 infants. At the first time point, average NDI rate across study groups weighted by sample size was 41.0% (95% CI 34.0% to 48.0%). The average change in NDI between time points was -3.3% (95% CI -8·8% to 2.2%). For each added week of gestation at birth, the rate of NDI declined by 9.7% (95% CI 6.2% to 13.3%). Most studies exhibited moderate-severe bias in at least one domain, especially attrition rates. CONCLUSIONS: When comparing discrete same-centre cohorts over time, there was no significant change in NDI rates in infants born <27 weeks' gestation or <1000 g. Higher survival rates unaccompanied by improvement in neurodevelopment highlight urgency for renewed focus on the causes of NDI and evidence-based strategies to reduce brain injury.


Asunto(s)
Recien Nacido Extremadamente Prematuro , Enfermedades del Prematuro , Recién Nacido , Lactante , Humanos , Peso al Nacer , Edad Gestacional , Pronóstico , Enfermedades del Prematuro/epidemiología
19.
J Pediatr ; 160(3): 382-7, 2012 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-22048056

RESUMEN

OBJECTIVE: To develop and pretest a decision-aid to help parents facing extreme premature delivery during antenatal counseling regarding delivery room resuscitation. STUDY DESIGN: Semistructured interviews with 31 clinicians and with 30 parents of children born <26 weeks' gestation were conducted following standard methods of qualitative research. These characterized perceptions of prenatal counseling to identify information that parents value when making decisions regarding delivery room resuscitation. These parental needs were formatted into a decision-aid. We assessed the primary outcome of how effectively the decision-aid improved knowledge during a simulated counseling session. Two groups of women were studied: parents with a history of prematurity ("experienced") and healthy women without prior knowledge of prematurity ("naïve"). RESULTS: Interviewees thought that visual formats to present survival and short- and long-term outcome information facilitated their own preparation, recall, and understanding. Accordingly, we designed a decision-aid as a set of cards with pictures and pictographs to show survival rates and complications. There was significant improvement in knowledge in 13 "experienced" parents (P = .04) and 11 "naïve" women (P < .0001). Participants found the cards useful and easy to understand. CONCLUSIONS: A decision-aid for parents facing extreme premature delivery may improve their understanding of complicated information during antenatal counseling.


Asunto(s)
Consejo , Técnicas de Apoyo para la Decisión , Salas de Parto , Enfermedades del Prematuro/terapia , Padres/psicología , Nacimiento Prematuro/psicología , Resucitación/psicología , Adulto , Toma de Decisiones , Femenino , Edad Gestacional , Humanos , Recien Nacido con Peso al Nacer Extremadamente Bajo , Recién Nacido , Recien Nacido Prematuro , Masculino , Persona de Mediana Edad , Embarazo , Adulto Joven
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA