Development and validation of a diagnostic prediction model for severe periventricular-intraventricular hemorrhage in newborns: insights from a retrospective analysis utilizing the MIMIC-III database

Abstract Objective: Periventricular-intraventricular hemorrhage is the most common type of intracranial bleeding in newborns, especially in the first 3 days after birth. Severe periventricular-intraventricular hemorrhage is considered a progression from mild periventricular-intraventricular hemorrhage and is often closely associated with severe neurological sequelae. However, no specific indicators are available to predict the progression from mild to severe periventricular-intraventricular in early admission. This study aims to establish an early diagnostic prediction model for severe PIVH. Method: This study was a retrospective cohort study with data collected from the MIMIC-III (v1.4) database. Laboratory and clinical data collected within the first 24 h of NICU admission have been used as variables for both univariate and multivariate logistic regression analyses to construct a nomogram-based early prediction model for severe periventricular-intraventricular hemorrhage and subsequently validated. Results: A predictive model was established and represented by a nomogram, it comprised three variables: output, lowest platelet count and use of vasoactive drugs within 24 h of NICU admission. The model's predictive performance showed by the calculated area under the curve was 0.792, indicating good discriminatory power. The calibration plot demonstrated good calibration between observed and predicted outcomes, and the Hosmer-Lemeshow test showed high consistency (p = 0.990). Internal validation showed the calculated area under a curve of 0.788. Conclusions: This severe PIVH predictive model, established by three easily obtainable indicators within the NICU, demonstrated good predictive ability. It offered a more user-friendly and convenient option for neonatologists.

Early-onset neonatal sepsis as a risk factor for peri-intraventricular hemorrhage in premature infants / Sepse precoce como fator de risco para hemorragia peri-intraventricular em prematuros

ABSTRACT Objective: To assess early-onset sepsis as a risk factor of peri-intraventricular hemorrhage in premature infants born at less than or equal to 34 weeks' gestation and admitted to a neonatal intensive care unit (NICU). Methods: This retrospective cohort study included premature patients born at less than or equal to 34 weeks' gestation who were admitted to the NICU of a tertiary hospital in southern Brazil, and born from January 2017 to July 2021. Data were collected from patients' medical records. Early-onset sepsis was measured according to the presence or absence of diagnosis within the first 72 hours of life, whereas the outcome, peri-intraventricular hemorrhage, was described as the presence or absence of hemorrhage, regardless of its grade. Results: Hazard ratios were calculated using Cox regression models. A total of 487 patients were included in the study, of which 169 (34.7%) had some degree of peri-intraventricular hemorrhage. Early-onset sepsis was present in 41.6% of the cases of peri-intraventricular hemorrhage, which revealed a significant association between these variables, with increased risk of the outcome in the presence of sepsis. In the final multivariate model, the hazard ratio for early-onset sepsis was 1.52 (95% confidence interval 1.01-2.27). Conclusion: Early-onset sepsis and the use of surfactants showed to increase the occurrence of the outcome in premature children born at less than or equal to 34 weeks' gestation. Meanwhile, factors such as antenatal corticosteroids and gestational age closer to 34 weeks' gestations were found to reduce the risk of peri-intraventricular hemorrhage.

RESUMO Objetivo: O objetivo do presente trabalho foi avaliar a sepse precoce como fator de risco para hemorragia peri-intraventricular (HPIV) em prematuros com 34 semanas ou menos, admitidos em Unidade de Terapia Intensiva (UTI) Neonatal. Métodos: Este estudo de coorte retrospectivo incluiu pacientes prematuros com 34 semanas ou menos, que receberam alta da UTI Neonatal de hospital terciário, no sul do Brasil, nascidos no período de janeiro de 2017 a julho de 2021. Os dados foram coletados por meio dos prontuários desses pacientes. A sepse precoce foi mensurada conforme a presença ou a ausência do diagnóstico nas primeiras 72 horas de vida. Já o desfecho, hemorragia peri-intraventricular, foi descrito conforme a presença ou ausência da hemorragia, independentemente do grau. Resultados: Hazard ratios (HR) foram calculados por meio de modelos de regressão de Cox. Foram incluídos no estudo 487 pacientes. Destes, 169 (34,7%) apresentaram algum grau de hemorragia peri-intraventricular. A sepse precoce esteve presente em 41,6% dos casos de hemorragia peri-intraventricular e apresentou associação significativa, elevando o risco do desfecho quando presente. No modelo multivariável final, o HR para a sepse precoce foi de 1,52 (intervalo de confiança de 95% — IC95% 1,01-2,27). Conclusão: Sepse precoce e uso de surfactante demonstraram aumentar a ocorrência do desfecho em crianças prematuras até 34 semanas, enquanto fatores como corticoide antenatal e idades gestacionais mais próximas a 34 semanas mostraram reduzir o risco de ocorrência hemorragia peri-intraventricular.

Hipernatremia en pacientes con estado crítico por afecciones neurológicas

Fundamento: los trastornos del sodio son los más comunes y menos entendidos en pacientes con lesión cerebral aguda debido al papel principal que desempeña el sistema nervioso central en la regulación de la homeostasis del sodio y agua lo que puede llevar a complicaciones graves y resultados adversos, incluyendo la muerte. Objetivo: determinar la contribución a la mortalidad de la hipernatremia en pacientes con estado crítico por afecciones neurológicas. Métodos: estudio observacional analítico sobre 55 pacientes que ingresaron en las unidades de atención al grave del Hospital Universitario Arnaldo Milián Castro, entre octubre del 2020 y mayo del 2022, con independencia del valor del sodio plasmático a su admisión en el servicio, así como durante su estadía en las unidades de atención al grave. Se emplearon métodos estadísticos univariados y bivariados en el análisis de los datos. Resultados: el promedio de edad fue de 60±16 años. Los diagnósticos más relevantes fueron la hemorragia intraparenquimatosa (56,37 %), el trauma craneoencefálico y el accidente cerebrovascular isquémico (ambos 30 %). Las concentraciones plasmáticas de sodio mostraron diferencias significativas (pX2= 0,000), siendo la media mayor a las 24 horas de ingreso (174,2±133,6) y la menor al 5to día (102,9±72,9). Existió correlación significativa entre las concentraciones plasmáticas de sodio al ingreso ( 24 h y 72 h) y el estado al egreso. En el análisis bivariado individual por período, solo a las 24 horas hubo relación significativa, en este periodo la hipernatremia contribuyó a la mortalidad en 1,78 veces más que en aquellos que no tenían el sodio elevado (OR=1,78 con IC: 1,39-3,4). Conclusiones: la hipernatremia en el paciente con estado crítico por afecciones neurológicas se asocia con incremento de la mortalidad.

Background: sodium disorders are the most common and least understood in patients with acute brain injury due to the major role played by the central nervous system in regulating sodium and water homeostasis, which can lead to serious complications and adverse outcomes, including death. Objective: to determine the hypernatremia contribution to mortality in patients with neurological conditions in critical state. Methods: longitudinal analytical observational study on 55 patients who were admitted to the acute care units at the Arnaldo Milián Castro University Hospital, between October 2020 and May 2022, regardless of the plasma sodium value upon admission to the service, as well as during their stay in the critical care units. Univariate and bivariate statistical methods were used in data analysis. Results: the average age was 60 ± 16 years. The most relevant diagnoses were intraparenchymal hemorrhage (56.37%), head trauma, and ischemic stroke (both 30%). Plasma sodium concentrations showed significant differences (pX2= 0.000), with the highest average at 24 hours of admission (174.2 ± 133.6) and the lowest at the 5th day (102.9 ± 72.9). There was a significant correlation between plasma sodium concentrations at admission, 24h and 72h with the state at discharge. In the individual bivariate analysis by period, there was only a significant relationship after 24 hours. In this period, hypernatremia contributed 1.78 times more to mortality than in those who did not have elevated sodium (OR=1.78 with CI: 1,39-3,4). Conclusions: hypernatremia in critically ill patients with neurological conditions is associated with increased mortality.

Cirugía neuroendoscópica intraventricular en pacientes adultos con hidrocefalia obstructiva. Serie corta de casos

Introducción: la hidrocefalia es una patología neuroquirúrgica que presenta varias alternativas de tratamiento. A pesar de esto, el índice de disfunción y reintervención de los pacientes es considerablemente elevado. Objetivo: describir los resultados de la cirugía neuroendoscópica intraventricular en pacientes operados de hidrocefalia obstructiva. Materiales y métodos: se trata de un estudio observacional, descriptivo, transversal, de serie de casos, en el que se describen variables clínicas, de imagen y quirúrgicas de pacientes operados mediante neuroendoscopia intraventricular. Después de aplicar criterios de inclusión y exclusión, la muestra quedó conformada por cinco pacientes. Resultados: la escala de coma de Glasgow de los pacientes al momento de la cirugía, fue mayor de 12 puntos en todos los casos. El 60 % de los casos presentó un grado 4 en la escala de Frisen para evaluar la gravedad del papiledema. El promedio del índice de Evans medido por tomografía fue de 0,39; el del tercer ventrículo fue de 14,75 mm, mientras que el promedio de los cuernos temporales fue de 4,1 mm. En tres casos se presentaron variedades anatómicas dilatadas de los forámenes de Monro, mientras que en dos presentaban diámetros medianos. El tiempo quirúrgico promedio fue de 45 minutos. Entre las complicaciones posoperatorias estuvo la disfunción del estoma quirúrgico en un paciente con tercer ventriculostomía. Conclusiones: la cirugía neuroendoscópica intraventricular es un método efectivo para tratar pacientes con hidrocefalia obstructiva en pacientes seleccionados.

Introduction: hydrocephalus is a neurosurgical pathology that presents several treatment alternatives. Despite this, the rate of dysfunctions and re-interventions of the patients is considered high. Objective: to describe the results of intraventricular neuro-endoscopic surgery in patients operated on for obstructive hydrocephalus. Materials and methods: this is an observational, descriptive, cross-sectional study, of case series, where clinical, imaging and surgical variables of patients operated by intraventricular neurosurgery are described. After applying inclusion and exclusion criteria, the sample was made up of five patients. Results: the Glasgow coma scale of the patients at the moment of surgery was greater than 12 points in all cases. 60% of the cases presented a grade 4 on Frisen scale to assess the severity of papilledema. The average Evans index, measured by tomography was 0.39; that of the third ventricle was 14.75 mm, while the average of the temporal horns was 4.1 mm. In three cases there were dilated anatomical variants of the foramens of Monro f, while in two they presented medium diameters. The average surgical time was 45 minutes. Surgical stoma dysfunction in one patient with a third ventriculostomy was among the postoperative complications. Conclusions: intraventricular neuro-endoscopic surgery is an effective method for treating patients with obstructive hydrocephalus in selected patients.

Circular RNA hsa_circ_0087893 participates in intraventricular hemorrhage occurrence and progression possibly as a competitive endogenous RNA in preterm infants / 南方医科大学学报

OBJECTIVE@#To screen for differentially expressed circular RNAs (circRNAs) in the serum of preterm infants with intraventricular hemorrhage (IVH) and explore the competitive endogenous RNA (ceRNA) mechanism of circRNAs in IVH in these infants.@*METHODS@#Fifty preterm infants (gestational age of 28 to 34 weeks) admitted in our department between January, 2019 and January, 2020 were enrolled in this study, including 25 with a MRI diagnosis of IVH and 25 without IVH. Serum samples were collected from 3 randomly selected infants from each group for profiling differentially expressed circRNAs using circRNA array technique. Gene ontology (GO) and pathway analyses were performed to reveal the function of the identified circRNAs. The circRNA-miRNA-mRNA network was constructed to identify the co-expression network of hsa_circ_ 0087893.@*RESULTS@#A total of 121 differentially expressed circRNAs were identified in the infants with IVH, including 62 up-regulated and 59 down-regulated circRNAs. GO and pathway analyses showed that these circRNAs were involved in multiple biological processes and pathways, including cell proliferation, activation and death, DNA damage and repair, retinol metabolism, sphingolipid metabolism, cell adhesion molecules. Among these circRNAs, hsa_circ_0087893 was found to have significant down-regulation in IVH group and co-express with 41 miRNAs and 15 mRNAs (such as miR-214-3p, miR-761, miR-183-5p, AKR1B1, KRT34, PPP2CB, and HPRT1).@*CONCLUSION@#The circRNA hsa_circ_0087893 may function as a ceRNA and play an important role in the occurrence and progression of IVH in preterm infants.

Reference values for cerebral ventricular size in neonates with gestational age of 33 +0-41 +6 weeks / 中华围产医学杂志

Objective:To establish the reference values and neurological intervention cutoffs for cerebral ventricular size in neonates born at 33 +0-41 +6 weeks of gestation and to investigate the influential factors and reliability of the related indices. Methods:This study prospectively recruited 1 370 1-to 7-day neonates born or hospitalized at the Hunan Provincial Maternal and Child Health Care Hospital from February to August 2021. All the neonates, who were born between 33 +0 and 41 +6 weeks of gestation, were subjected to ultrasound scanning to obtain the indices, including ventricular index (VI), anterior horn width (AHW), thalamo-occipital distance (TOD), and ventricular height (VH). The reference value and neurological intervention cutoff for each index were set. Quantile regression was used to estimate the correlation between each index and continuous covariates [gestational age at birth (GA) and birth weight (BW)]. Mann-Whitney U test was used to analyze the differences in the medians of indices in different categorical covariates groups (males/females, left/right lateral ventricles, vaginal delivery/cesarean section, and singleton/multiple births). Intraclass correlation coefficient (ICC) calculated by a two-way mixed effect model and absolute agreement was used to access intra-rater reliability; ICC via a two-way random effect model and absolute agreement was utilized to rate inter-rater reliability (pool reliability: ICC below 0.50; moderate reliability: ICC between 0.50 and 0.75; good reliability: ICC between 0.75 and 0.90; excellent reliability: ICC exceeding 0.90). Results:The upper limits of reference values for AHW, TOD, VI, and VH in 555 (40.5%) preterm neonates were 2.7-3.5 mm, 20.9-22.5 mm, 12.6-13.7 mm, and 3.8-4.9 mm, and in 815 (59.5%) term newborns were 3.4-4.3 mm, 18.6-21.3 mm, 14.2-14.7 mm, and 3.4-3.8 mm, respectively. The cutoff of neurosurgical intervention for each index was the upper limit of reference value plus 4 mm. AHW median was positively correlated with GA [partial regression coefficient (PRC): 0.12, P<0.05], while TOD and VH medians were negatively correlated with GA (PRC:－0.31 and－0.06, both P<0.05). VI, AHW, and TOD medians were positively associated with BW (PRC: 0.46, 0.23, and 0.97, all P<0.05). The medians of VH, AHW, and TOD in the left cerebral ventricular exceeded those in the right cerebral ventricular, respectively (VH: 2.0 vs 1.8 mm, U=836 071.50; AHW: 1.8 vs 1.7 mm, U=874 141.50; TOD: 13.6 vs 12.5 mm, U=738 409.00, all P<0.05). The medians of AHW and VI in male neonates were greater than those in female newborns, respectively (AHW: 1.8 vs 1.7 mm, U=834 124.00; VI: 11.1 vs 10.8 mm, U=884 156.50, both P<0.05). The neonates delivered vaginally had greater AHW median, but smaller TOD median than those delivered by cesarean section (AHW: 2.0 vs 1.6 mm, U=685 546.00, P<0.001; TOD: 13.1 vs 12.9 mm, U=850 797.00, P=0.010). The AHW median in singleton newborns exceeded that in multiple births (1.9 vs 1.4 mm, U=356 999.00, P<0.001). The lower limits of 95% confidence intervals for intra-rater and inter-rater ICCs exceeded 0.75 and 0.50, respectively. Conclusion:Reference values and surgical intervention thresholds for VI, AHW, TOD, VH of newborns with a gestational age of 33 +0-41 +6 weeks were preliminarily established, and the reliability of these indicators were verified.

Risk factors of hydrocephalus secondary to severe intraventricular hemorrhage in preterm infants / 中国新生儿科杂志

Objective:To study the risk factors of secondary hydrocephalus after severe intraventricular hemorrhage (IVH) in preterm infants for prevention and early identification of post-hemorrhagic hydrocephalus (PHH).Methods:From June 2013 to June 2021, preterm infants with severe IVH admitted to our hospital were retrospectively analyzed. They were assigned into PHH group and non-PHH group. Rank sum test or chi-square test was used for comparison between the two groups and multivariate logistic regression analysis was used to analyze the risk factors of PHH in preterm infants.Results:A total of 246 preterm infants with severe IVH were enrolled, including 68 cases (27.6%) in the PHH group and 178 cases (72.4%) in the non-PHH group. Multivariate logistic stepwise regression analysis showed that male gender ( OR=2.014, 95% CI 1.063-3.817), gestational age ≤30 week ( OR=2.240, 95% CI 1.210-4.146), 5-min Apgar score ≤5 ( OR=3.980, 95% CI 1.483-10.685), placental abruption ( OR=2.940, 95% CI 1.324-6.531) were independent risk factors for PHH in preterm infants and thrombocytopenia was the protective factor for PHH in preterm infants ( OR=0.305, 95% CI 0.147-0.632). The incidence of moderate thrombocytopenia in non-PHH group was significantly higher than PHH group ( P<0.05). No significant differences existed in the incidences of mild and severe thrombocytopenia between the two groups ( P>0.05). Conclusions:Male gender, gestational age ≤30 week, 5-min Apgar score ≤5, placental abruption are risk factors for PHH in premature infants with severe IVH and moderate thrombocytopenia has protective effects.

Ventricular hemorrhage secondary to spontaneous intracerebral hemorrhage: pathophysiological, imaging evaluation and treatment / 国际脑血管病杂志

Intraventricular hemorrhage (IVH) accounts for about 3%-5% of all intracerebral hemorrhage, which can be divided into primary and secondary IVH. Primary IVH is mostly caused by choroid plexus vascular or subependymal artery rupture, and secondary IVH refers to spontaneous intracerebral hemorrhage that breaks into the ventricle and the prognosis was poor. This article reviews the pathophysiological mechanism, severity assessment, and treatment progress of secondary IVH.

Dilated optic nerve sheath by ultrasound predicts mortality among patients with acute intracerebral hemorrhage / A bainha do nervo óptico dilatada na ultrassonografia prediz mortalidade na hemorragia intraparenquimatosa aguda

Abstract Background Intracerebral hemorrhage (ICH) is a deadly disease and increased intracranial pressure (ICP) is associated with worse outcomes in this context. Objective We evaluated whether dilated optic nerve sheath diameter (ONSD) depicted by optic nerve ultrasound (ONUS) at hospital admission has prognostic value as a predictor of mortality at 90 days. Methods Prospective multicenter study of acute supratentorial primary ICH patients consecutively recruited from two tertiary stroke centers. Optic nerve ultrasound and cranial computed tomography (CT) scans were performed at hospital admission and blindly reviewed. The primary outcome was mortality at 90-days. Multivariate logistic regression, ROC curve, and C-statistics were used to identify independent predictors of mortality. Results Between July 2014 and July 2016, 57 patients were evaluated. Among those, 13 were excluded and 44 were recruited into the trial. Their mean age was 62.3 ± 13.1 years and 12 (27.3%) were female. On univariate analysis, ICH volume on cranial CT scan, ICH ipsilateral ONSD, Glasgow coma scale, National Institute of Health Stroke Scale (NIHSS) and glucose on admission, and also diabetes mellitus and current nonsmoking were predictors of mortality. After multivariate analysis, ipsilateral ONSD (odds ratio [OR]: 6.24; 95% confidence interval [CI]: 1.18-33.01; p = 0.03) was an independent predictor of mortality, even after adjustment for other relevant prognostic factors. The best ipsilateral ONSD cutoff was 5.6mm (sensitivity 72% and specificity 83%) with an AUC of 0.71 (p = 0.02) for predicting mortality at 90 days. Conclusion Optic nerve ultrasound is a noninvasive, bedside, low-cost technique that can be used to identify increased ICP in acute supratentorial primary ICH patients. Among these patients, dilated ONSD is an independent predictor of mortality at 90 days.

Resumo Antecedentes A hemorragia intraparenquimatosa (HIP) aguda apresenta elevada morbimortalidade e a presença de hipertensão intracraniana (HIC) confere um pior prognóstico. Objetivo Avaliamos se a dilatação do diâmetro da bainha do nervo óptico (DBNO) através do ultrassom do nervo óptico (USNO) na admissão hospitalar seria preditora de mortalidade. Métodos Estudo multicêntrico e prospectivo de pacientes consecutivos com HIP supratentorial primária aguda admitidos em dois centros terciários. Ultrassom do nervo óptico e tomografia computadorizada (TC) de crânio foram realizados na admissão e revisados de forma cega. O desfecho primário do estudo foi a mortalidade em 3 meses. Análises de regressão logística, curva de característica de operação do receptor (ROC, na sigla em inglês) e estatística-C foram utilizadas para identificação dos preditores independentes de mortalidade. Resultados Entre julho de 2014 e julho de 2016, 44 pacientes foram incluídos. A idade média foi 62,3 (±13,1) anos e 12 (27,3%) eram mulheres. Na análise univariada, o volume da HIP na TC de crânio, DBNO ipsilateral à HIP, glicemia, escala de coma de Glasgow (ECG) e NIHSS na admissão hospitalar, e também diabetes mellitus e não-tabagista foram preditores de mortalidade. Após análise multivariada, o DBNO ipsilateral à HIP permaneceu como preditor independente de mortalidade (odds ratio [OR]: 6,24; intervalo de confiança [IC] de 95%: 1,18-33,01; p = 0,03). O melhor ponto de corte do DBNO ipsilateral como preditor de mortalidade em 3 meses foi 5,6mm (sensibilidade 72% e especificidade 83%) e área sob a curva (AUC, na sigla em inglês) 0,71 (p = 0,02). Conclusão O USNO é um método não-invasivo, beira-leito, de baixo custo, que pode ser empregado para estimar a presença de HIC em pacientes com HIP supratentorial primária aguda. A presença de DBNO dilatada é um preditor independente de mortalidade em 3 meses nesses pacientes.

Tamaño del léxico en niños(as) muy prematuros y prematuros extremos de 24 meses: un estudio transversal / Vocabulary size in very preterm and extremely preterm infants: a cross-sectional study

Las investigaciones muestran que un número importante de niños nacidos prematuros (antes de las 37 semanas de gestación) presentan dificultades en su desarrollo, entre ellas el desarrollo lingüístico. Las investigaciones previas indican que algunas complicaciones biomédicas, como la hemorragia intraventricular (los grados III y IV), la leucomalacia periventricular y la displasia broncopulmonar, incrementan la probabilidad de presentar alteraciones en el desarrollo de la cognición y/o del lenguaje, por lo que se hace necesario realizar investigaciones que proporcionen más información y con ello poder anticiparse a posibles consecuencias en los aprendizajes futuros de estos niños nacidos bajo la condición de prematuridad. Es así, que los objetivos de este estudio fueron medir el tamaño del léxico temprano en niños muy prematuros y prematuros extremos (con y sin complicaciones biomédicas) a los 24 meses de edad corregida, así como también determinar la asociación entre número de complicaciones biomédicas presentes y el tamaño del léxico. Para ello, se trabajó con 108 niños divididos en tres grupos: 39 niños prematuros de alto riesgo (con complicaciones biomédicas), 36 niños prematuros de bajo riesgo (sin complicaciones biomédicas asociadas a alteraciones del lenguaje y /o cognición) y 33 niños nacidos de término. Todos fueron evaluados con el Inventario II de Desarrollo de Habilidades Comunicativas MacArthur-Bates. Los resultados muestran que los niños nacidos de término tienen significativamente mayor tamaño del léxico que los prematuros, no existiendo diferencias en los resultados entre prematuros de bajo riesgo y los prematuros de alto riesgo. Por otra parte, el tamaño del léxico no presenta correlación con las complicaciones biomédicas.

Research shows that a significant number of children born preterm (before 37 weeks of gestation) have developmental difficulties, among them disturbances in language development. Studies indicate that some biomedical complications such as intraventricular hemorrhage (grades III and IV), periventricular leukomalacia, and bronchopulmonary dysplasia increase the probability of cognitive and/or language development disorders. Therefore, there is a need to conduct more studies that provide information that allows anticipating possible consequences in the learning process of children born prematurely. The aims of this study were to measure the early vocabulary size in very preterm and extremely preterm children (with and without biomedical complications) at 24 months of corrected age and to determine the association between the number of biomedical complications and vocabulary size. To that effect, we worked with 108 children divided into three groups: 39 high-risk preterm children (with biomedical complications), 36 low-risk preterm children (without biomedical complications associated with language and/or cognitive disturbances), and 33 full-term children. All children were evaluated using the MacArthur-Bates Communicative Development Inventory II. The results show that the vocabulary size of full-term children is significantly larger than that of preterm children and that no differences exist between the group of high-risk versus low-risk preterm children. On the other hand, vocabulary size does not correlate withbiomedical complications.

Risk factors and prognosis of hypotension within 72 hours after birth in extremely preterm infants / 中国当代儿科杂志

OBJECTIVES@#To investigate the risk factors and prognosis of hypotension within 72 hours after birth in extremely preterm infants.@*METHODS@#A retrospective analysis was conducted on clinical data of extremely preterm infants admitted to the Children's Hospital of Zhejiang University School of Medicine from January 2019 to April 2022. Based on the presence of hypotension within 72 hours after birth, the eligible infants were divided into a hypotension group (41 cases) and a normotension group (82 cases). The clinical characteristics, echocardiographic parameters within 72 hours after birth, and early complications were compared between the two groups. Multivariate logistic regression analysis was used to explore the risk factors for hypotension within 72 hours after birth, and receiver operating characteristic curve analysis was performed to evaluate the predictive value of relevant indicators for the occurrence of hypotension within 72 hours after birth in the preterm infants.@*RESULTS@#The proportion of infants who required medication or surgical closure of patent ductus arteriosus (PDA), the proportions of infants with intraventricular hemorrhage ≥ grade III and severe pulmonary hemorrhage, and the mortality rate within 7 days in the hypotension group were significantly higher than those in the normotension group (P<0.05). Multivariate logistic regression analysis showed that lower birth weight, larger PDA diameter, and hemodynamically significant PDA were risk factors for the occurrence of hypotension within 72 hours after birth in extremely preterm infants (P<0.05). The receiver operating characteristic curve analysis showed that the combination of birth weight, PDA diameter, and hemodynamically significant PDA had an area under the curve of 0.873 (95%CI: 0.802-0.944, P<0.05) for predicting hypotension within 72 hours after birth, with a sensitivity of 73.2% and specificity of 91.5%.@*CONCLUSIONS@#Hypotension within 72 hours after birth is closely related to birth weight and PDA, and increases the risk of early severe complications and mortality in extremely preterm infants.

Intraventricular metastasis from carcinoma breast masquerading as choroid plexus neoplasm: A case report

Metastatic tumors in the brain represent the most common type of intracranial neoplasm, comprising 8–10% of all brain tumors. 30% of such tumors are primarily of breast origin in females. Brain parenchymal metastasis is the more common presentation. Intraventricular spread is rare, seen in less than 5% of cases in a metastatic scenario. Here, we report a case of 41-year-old female presenting with intraventricular brain metastasis in a follow-up case of carcinoma breast. Five years post-surgery, the patient presented with complaints of headache. On evaluation, magnetic resonance imaging (MRI) brain showed an intraventricular lesion in the fourth ventricle. She was operated on for the same and the biopsy revealed a tumor with a complex papillary pattern resembling choroid plexus papilloma. On immunohistochemistry (IHC), the tumor cells were positive for cytokeratin 7 (CK7), Epithelial membrane antigen (EMA), GATA3, and mammaglobin favoring a metastasis from breast origin. Hence, a possibility of brain metastasis should be kept in mind in patients presenting with solitary ventricular masses due to the lack of definite radiological characteristics in such locations and histological overlap. Also, organ-specific IHC is a must in today's evidence-based era as is reflected in our case.

Primary intra-ventricular hemorrhage in 33-year-old man: a case report

The aim of the study wasto provide insight into cases of primary intra-ventricular hemorrhagecaused by arterial venous malformations. A 33-year-old man visited the emergency room and admitted that he had a chief complaint of headache for the last 7 days. Neurological clinical examination only found nuchal rigidity. The CT scan of the head showed intra-ventricular hemorrhage and the CTA results showed an AVM with a left occipital nidus with arterialization of the posterior cerebral artery. One day before the DSA was performed, the patient had a seizure and based on a repeat CT scan, the bleeding spread to the parenchyma. The patient refused decompression and decided to go home after his condition stabilized and his complaints improved with anti-edema treatment. A repeat DSA action was planned but the patient had financial problems. Primary intra-ventricular hemorrhage occurs when the nidus arterial venous malformation is adjacent to the ventricle although this is only 7% of all cases of primary intra-ventricular hemorrhage. In the case of primary intra-ventricular hemorrhage, complications need to bewary of when hydrocephalus appears. In addition, digital subtraction angiography should be performed prior to endovascular surgery as the main modality of therapy. Arterial venous malformation can be one of the causes. Digital angiography and Endovascularmeasures should be performed in this patient to prevent further complications. However, the refusal of the patient and family until the time of this case report was made is a separate obstacle in the diagnostic and therapeutic process.

Role of External Ventricular Drainage (EVD) in Treating Spontaneous Intraventricular Haemorrhage

Background: There is no consensus in the literature on the effects of the development of hydrocephalus on survival and disability after intracerebral haemorrhage (ICH) and the benefits of external ventricular drainage (EVD). This study is planned to describe the role of external ventricular drainage in treating patients of spontaneous, either primary or secondary, intraventricular haemorrhage with hydrocephalus.Material & Methods:A hospital based prospective interventional study was conducted in the Department of Neurosurgery of Dhaka Medical College Hospital, which is a tertiary level hospital, from April 2016 to September 2017.Total 42 patients of spontaneous intraventricular haemorrhage, either primary or secondary, with hydrocephalus were selected for this study. All the collected data were entered into IBM SPSS software, Version 24. For statistical analysis, paired t-test to compare the preoperative GCS with postoperative GCS at 24 hours was done.Results:Among 42 patients, age range was 26-75 years with the mean age 65.2 � 10.87 years. Male were 26 (61.9%) and female were 16 (38.1%). Male-Female ratio was 1.625:1. No patient needed conversion of EVD into VP shunt. EVD drain became blocked in 5 cases which were managed accordingly. 5 patients developed ventriculitis among which 2 patients died and rest 3 improved with antibiotics.Conclusions:The results of present study shows that EVD has a good role in the treatment of spontaneous IVH with hydrocephalus when ICH volume is low (<30ml) and modified Graeb Score is low (?10 found in this in this study. Preoperative higher GCS or initial improvement in GCS or initial improvement in GCS at 24 hours positively correlates with Glasgow outcome scale which is an indication of good function outcome.

Tigeciclina intraventricular como tratamiento de ventriculitis por Chryseobacterium indologenes multirresistente. A propósito de un caso pediátrico / Intraventricular tigecycline as a treatment for multidrug-resistant Chryseobacterium indologenes ventriculitis. About a pediatric case

Resumen La ventriculitis por Chryseobacterium indologenes puede ser un reto terapéutico importante, sobre todo cuando el germen adquiere resistencia intra tratamiento a los antimicrobianos habituales. La tigeciclina intraventricular podría ser una excelente opción en estos casos. Se presenta el caso de una escolar que recibió tratamiento intraventricular con tigeciclina, ante la ausencia de alternativas terapéuticas, con suceso exitoso.

Summary Ventriculitis due to Chryseobacterium indologenes can be a major therapeutic challenge, especially when the germ acquires intra-treatment resistance to common antimicrobials. Intraventricular tigecycline could be an excellent option in these cases. We present a schoolgirl`s case who received successfully intraventricular treatment with tigecycline.

Structure Design and Finite Element Analysis on Patch in Intraventricular Tunnel / 医用生物力学

ObjectiveT o explore the influence of patch shape for intraventricular tunnel (IVT) construction on biomechanical performance of the double outlet right ventricle after correction. Methods Based on the idealized IVT model, a two-dimensional IVT patch was designed. Six groups of patch models with the rhombic long-to-short axis ratio of 1∶0.625, 1∶0.3, 1∶0.2, 1∶0.15, 1∶0.125, 1∶0.1 were established according to the difference between the long and short axis of the rhombus patch in the turning part, and finite element analysis method was used to numerically simulate the process of stitching, holding and propping up the patch into a three-dimensional (3D) IVT model. Results The maximum stresses on suture line of 6 patch models were mainly concentrated at acute-angle corners of the rhombus. As rhombic long-to-short axis ratio of the patch increased, the maximum stress of the IVT suture line first decreased and then increased, and the volume showed an increasing trend. The pressure difference between two ends of the tunnel first decreased and then increased. The patch with the long-to-short axis ratio of 1∶0.15 had a uniform surface stress distribution, and the maximum stress on the suture line was the smallest. Meanwhile the right ventricular volume was less encroached on, and the pressure difference at both ends of the tunnel was small. Conclusions The IVT shape can influence stresses of suture line, the right ventricle volume and the pressure difference of IVT with non-monotonic variations. The suture effect of the patch with the long-to-short axis ratio of 1∶0.15 is relatively better among the constructed models.

Influence of umbilical cord milking versus delayed cord clamping on the early prognosis of preterm infants with a gestational age of <34 weeks: a Meta analysis / 中国当代儿科杂志

OBJECTIVES@#To study the influence of umbilical cord milking versus delayed cord clamping on the early prognosis of preterm infants with a gestational age of <34 weeks.@*METHODS@#PubMed, Web of Science, Embase, the Cochrane Library, CINAHL, China National Knowledge Infrastructure, Wanfang Data, Weipu Database, and SinoMed were searched for randomized controlled trials on umbilical cord milking versus delayed cord clamping in preterm infants with a gestational age of <34 weeks published up to November 2021. According to the inclusion and exclusion criteria, two researchers independently performed literature screening, quality evaluation, and data extraction. Review Manger 5.4 was used for Meta analysis.@*RESULTS@#A total of 11 articles were included in the analysis, with 1 621 preterm infants in total, among whom there were 809 infants in the umbilical cord milking group and 812 in the delayed cord clamping group. The Meta analysis showed that compared with delayed cord clamping, umbilical cord milking increased the mean blood pressure after birth (weighted mean difference=3.61, 95%CI: 0.73-6.50, P=0.01), but it also increased the incidence rate of severe intraventricular hemorrhage (RR=1.83, 95%CI: 1.08-3.09, P=0.02). There were no significant differences between the two groups in hemoglobin, hematocrit, blood transfusion rate, proportion of infants undergoing phototherapy, bilirubin peak, and incidence rates of complications such as periventricular leukomalacia and necrotizing enterocolitis (P>0.05).@*CONCLUSIONS@#Compared with delayed cord clamping, umbilical cord milking may increase the risk of severe intraventricular hemorrhage in preterm infants with a gestational age of <34 weeks; however, more high-quality large-sample randomized controlled trials are needed for further confirmation.

Evaluation of diastolic left ventricular relative pressure in patients with type 2 diabetes mellitus by vector flow mapping / 中华超声影像学杂志

Objective:To evaluate the distribution of diastolic left ventricular pressure in patients with type 2 diabetes mellitus (T2DM) by relative pressure imaging (RPI) based on vector flow mapping (VFM), and to explore the clinical risk factors for the diastolic left ventricular pressure distribution.Methods:Thirty patients with T2DM and thirty normal controls were included from August 2020 to July 2021 in Fuwai Central China Cardiovascular Hospital. All selected subjects underwent conventional echocardiography.Left intraventricular pressure difference (IVPD) and left intraventricular pressure gradient (IVPG) were measured using RPI of VFM in isovolumic relaxation (IR), rapid filling (RF), atrial contraction (AC), isovolumic contraction (IC) and rapid ejection (RE) phases. The relationships between IVPD with other parameters were analyzed.Results:①Compared with the control group, E/A, e′, IVPD-IR, IVPG-IR, IVPD-RF, IVPG-RF, IVPD-AC, and IVPG-AC were significantly lower and E/e′ was significantly greater in the T2DM group ( P<0.05). ②IVPD-IR, IVPD-RF, and IVPD-AC were positively correlated with E/A ( r=0.309, P<0.05; r=0.274, P<0.05; r=0.273, P<0.05). IVPD-IR, IVPD-RF, and IVPD-AC were negatively correlated with E/e′ ( r=-0.587, P<0.05; r=-0.273, P<0.05; r=-0.415, P<0.05). IVPD-IR and IVPD-AC were positively correlated with e′ ( r=0.451, P<0.05; r=0.431, P<0.05). ③Multivariable linear regression analysis showed that hemoglobin A 1c (HbA 1c) was an independent risk factor affecting IVPD-IR, IVPD-RF, and IVPD-AC (β=-0.417, P<0.05; β=-0.451, P<0.05; β=-0.460, P<0.05). Conclusions:RPI of VFM can quantitatively evaluate diastolic left ventricular pressure distribution in patients with T2DM. HbA 1c is an independent risk factor affecting IVPD-IR, IVPD-RF, and IVPD-AC.

The incidence and risk factors of periventricular-intraventricular hemorrhage in extremely preterm infants / 中国新生儿科杂志

Objective:To study the incidence and risk factors of periventricular- intraventricular hemorrhage (PIVH) in extremely preterm infants (EPI) with gestational age (GA)<28 weeks.Methods:A retrospective study was performed in 304 cases of EPI hospitalized between January 2016 and December 2018. The infants were assigned into two groups according to whether PIVH occurred. Univariate analysis and Logistic regression analysis were used to determine the risk factors of PIVH.Results:Among the 304 cases,101 (33.2%) developed PIVH and 44 (14.5%) developed severe PIVH.The incidences of PIVH and severe PIVH in EPI with birth weight (BW) <750 g were 50.6% and 31.0%. The incidences of PIVH and severe PIVH in EPI with GA<26 weeks were 51.4% and 27.5%. Logistic regression analysis revealed that advanced GA ( OR=0.697, 95% CI 0.543~0.895, P=0.005) decreased the risk of PIVH. Prolonged invasive mechanical ventilation ( OR=1.121, 95% CI 1.007~1.249, P=0.037) and use of vasoactive drugs ( OR=1.373, 95% CI 1.040~1.812, P=0.025) within the first week of life increased the risk of PIVH. Conclusions:The incidences of PIVH and severe PIVH in EPI are quite high. Smaller GA, longer use of invasive mechanical ventilation and vasoactive drugs within the first week will increase the risk of PIVH in EPI.

Application of relative pressure imaging in assessing changes of diastolic left intraventricular pressure in hypertensive patients with different left ventricular configurations / 中华超声影像学杂志

Objective:To investigate the changes of intraventricular pressure differences (IVPDs) and intraventricular pressure gradients (IVPGs) in different diastolic phases of hypertensive patients with different left ventricular configurations by relative pressure imaging (RPI) based on vector flow mapping (VFM), and to explore its diagnostic value for diastolic function in hypertensive patients with different left ventricular configurations.Methods:Totally 180 patients with hypertension were selected from April 2020 to March 2021 in the Outpatient Clinic of the Second Affiliated Hospital of Harbin Medical University. According to the relative wall thickness (RWT) and left ventricular mass index (LVMI), the patients were divided into normal geometry group (NG group, n=62), concentric remodeling group (CR group, n=62) and concentric hypertrophy group (CH group, n=56). Sixty-one healthy volunteers were selected as the control group. Clinical data and echocardiographic parameters were collected and the differences of each parameter among 4 groups were compared. IVPDs and IVPGs in four diastolic phases were obtained by RPI, including isovolumic relaxation (IR), rapid filling (RF), slow filling (SF) and atrial contraction (AC). The differences of IVPDs and IVPGs in each phase of diastole among 4 groups and their correlations with echocardiographic parameters were analyzed, and the diagnostic efficacy of RPI parameters in NG group patients with reduced diastolic function was analyzed by the ROC curve. Results:The absolute values of IVPDs and IVPGs were greater in all subgroups of hypertension than those of the control group at each diastole phase( P<0.001). Pairwise comparisons showed statistically significant differences of IVPDs-IR and IVPGs-IR among 4 groups( P<0.001). They were correlated with E/e′( rs=-0.615, -0.605; all P<0.001). IVPDs-IR and IVPGs-IR had good diagnostic efficacy for the decrease of diastolic function of patients in NG group, the cutoff values were <-0.705 mmHg (AUC=0.935, P<0.001) and <-0.130 mmHg/cm (AUC=0.926, P<0.001). Conclusions:RPI can precisely assess different degrees of diastolic function changes in hypertensive patients with different configurations. IVPDs-IR and IVPGs-IR can be used as potential new indicators for non-invasive early diagnosis of hypertensive patients with reduced diastolic function, which is of great significance for timely clinical intervention and treatment of reversing ventricular remodeling.