Clinical course and peculiarities of Parechovirus and Enterovirus central nervous system infections in newborns: a single-center experience.

Parechovirus (HpEV) and Enterovirus (EV) infections in children mostly have a mild course but are particularly fearsome in newborns in whom they may cause aseptic meningitis, encephalitis, and myocarditis. Our study aimed to describe the clinical presentations and peculiarities of CNS infection by HpEV and EV in neonates. This is a single-center retrospective study at Istituto Gaslini, Genoa, Italy. Infants aged ≤ 30 days with a CSF RTq-PCR positive for EV or HpEV from January 1, 2022, to December 1, 2023, were enrolled. Each patient's record included demographic data, blood and CSF tests, brain MRI, therapies, length of stay, ICU admission, complications, and mortality. The two groups were compared to identify any differences and similarities. Twenty-five patients (15 EV and 10 HpEV) with a median age of 15 days were included. EV patients had a more frequent history of prematurity/neonatal respiratory distress syndrome (p = 0.021), more respiratory symptoms on admission (p = 0.012), and higher C-reactive protein (CRP) levels (p = 0.027), whereas ferritin values were significantly increased in HpEV patients (p = 0.001). Eight patients had a pathological brain MRI, equally distributed between the two groups. Three EV patients developed myocarditis and one HpEV necrotizing enterocolitis with HLH-like. No deaths occurred.  Conclusion: EV and HpEV CNS infections are not easily distinguishable by clinical features. In both cases, brain MRI abnormalities are not uncommon, and a severe course of the disease is possible. Hyper-ferritinemia may represent an additional diagnostic clue for HpEV infection, and its monitoring is recommended to intercept HLH early and initiate immunomodulatory treatment. Larger studies are needed to confirm our findings. What is Known: • Parechovirus and Enteroviruses are the most common viral pathogens responsible for sepsis and meningoencephalitis in neonates and young infants. • The clinical course and distinguishing features of Parechovirus and Enterovirus central nervous system infections are not well described. What is New: • Severe disease course, brain MRI abnormalities, and complications are not uncommon in newborns with Parechovirus and Enteroviruses central nervous system infections. • Hyper-ferritinemia may represent an additional diagnostic clue for Parechovirus infection and its monitoring is recommended.

Learning from the COVID-19 pandemic: IMCU as a more efficient model of pediatric critical care organization.

BACKGROUND: A significant proportion of children with SARs-CoV-2-related illnesses have been admitted to the Pediatric intensive care unit (ICU), although often for closer monitoring or concerns related to comorbidities or young age. This may have resulted in inappropriate ICU admissions, waste of resources, ICU overcrowding, and stress for young patients and caregivers. The Pediatric Intermediate Care Unit (IMCU) may represent an appropriate setting for the care of children whose monitoring and treatment needs are beyond the resources of a general pediatric ward, but who do not qualify for critical care. However, research on pediatric IMCUs and data on their performance is very limited. METHODS: We conducted a single-center retrospective study including all patients aged 0-18 with acute COVID-19 or multisystem inflammatory syndrome in children (MIS-C), admitted to a newly established stand-alone 12-bed pediatric IMCU at Gaslini Hospital, Genoa, Italy, between 1 March 2020 and 31 January 2022. Each IMCU room has a multiparameter monitor connected to a control station and can be equipped as an ICU room in case of need for escalation of care, up to ECMO support. IMCU and ICU are adjacent and located on the same floor, allowing a timely escalation from intermediate to critical care in the IMCU, with staff changes without the need for patient transfer. RESULTS: Among 550 patients hospitalized for acute COVID-19 or MIS-C, 106 (19.2%, 80 with acute COVID-19, and 26 MIS-C) were admitted to IMCU. Three of them (2.8%) required escalation to critical care due to the worsening of their conditions. Forty-seven patients (44%) were discharged home from the IMCU, while the remaining 57 (55%) were transferred to low-intensity care units after clinical improvement. CONCLUSIONS: In our study, the need for pediatric ICU admission was low for both acute COVID-19 patients (0.8%) and MIS-C patients (3.1%) compared to the literature data. The IMCU represented an adequate setting for children with COVID-19-related illness who need a higher level of care, but lack strict indications for ICU admission, thus preventing ICU overcrowding and wasting of economic and logistical resources. Further studies are needed to better assess the impact of an IMCU on hospital costs, ICU activity, and long-term psychological sequelae on children and their families.

Pediatric Extraskeletal Ewing Sarcoma Originating in the Heart: A Case Report and Review of the Literature.

Extraosseous Ewing sarcoma of primary cardiac origin is an extremely rare variety among pediatric cardiac neoplasms. We report a case of extraosseous Ewing sarcoma of primary cardiac origin in a 9-year-old girl, treated with debulking surgery, adjuvant chemotherapy, and radiotherapy.

Resection of primary tumor in stage 4S neuroblastoma: a second study by the Italian Neuroblastoma Group.

PURPOSE: To clarify the role of primary tumor resection in stage 4S neuroblastoma. METHODS: We investigated a cohort of 172 infants diagnosed with stage 4S neuroblastoma between 1994 and 2013. Of 160 evaluable patients, 62 underwent upfront resection of the primary tumor and 98 did not. RESULTS: Five-year progression-free and overall survival were significantly better in those who had undergone upfront surgery (83.6% vs 64.2% and 96.8% vs 85.7%, respectively). One post-operative death and four non-fatal complications occurred in the resection group. Three patients who had not undergone resection died of chemotherapy-related toxicity. Thirteen patients underwent late surgery to remove a residual tumor, without complications: all but one alive. Outcomes were better in patients diagnosed from 2000 onwards. CONCLUSION: Infants diagnosed with stage 4S neuroblastoma who underwent upfront tumor resection had a better outcome. However, this result cannot be definitely attributed to surgery, since these patients were selected on the basis of their favorable presenting features. Although the question of whether to operate or not at disease onset is still unsolved, this study confirms the importance of obtaining enough adequate tumor tissue to enable histological and biological studies to properly address treatment, to achieve the best possible outcome.

How has the SARS-CoV-2 pandemic changed the epidemiology and management of acute bronchiolitis?

OBJECTIVE: SARS-COV-2 pandemic profoundly impacted acute bronchiolitis epidemiology worldwide, especially respiratory syncytial virus (RSV) diffusion and the burden of disease, with remarkable implications on the management of health resources. We aimed to study the epidemiology and clinical course of bronchiolitis in the past 5 years in our region and to assess the trends that occurred during and after the SARS-COV-2 pandemic. METHODS: We conducted an observational study including all children aged 0-2 years with bronchiolitis admitted to a tertiary children's hospital during the last 5 years. Demographic, clinical, and microbiological data were collected. Comparisons between patient subgroups were carried out. RESULTS: A total of 647 patients admitted for bronchiolitis were included (median age 78 days). Molecular diagnostic tests were performed in 617 patients (95.4%) with RSV detected in 51.5% of patients in prepandemic years and 74.5% in pandemic years. Through the study period, we observed a progressive increase in the number of children requiring respiratory support, RSV infections, and children with a history of prematurity. Conversely, this was not true for mechanical ventilation, duration of respiratory support, intensive care unit admission, and length of stay. CONCLUSIONS: Clinical course and epidemiology of bronchiolitis showed a significant change through the study years with a heavy impact during the 2021-2022 season. The increase in the number of patients requiring respiratory support, although not associated with an increase in mechanical ventilation, may be explained by the higher prevalence of RSV. The change in epidemiology highlights the importance of surveillance systems to monitor RSV circulation, to plan prophylactic strategies, and prepare healthcare systems.

Sudden Onset of Severe Pulmonary Hypertension in a Preterm Infant: A Case Report on the Role of Maternal Use of Serotonin Re-Uptake Inhibitors During Pregnancy and Concurrent Risk Factors.

Persistent pulmonary hypertension of the newborn (PPHN) is a severe condition caused by failed circulatory adaptation at birth. Pulmonary hypertension is most common in full-term infants and rare in preterms, although it is increasingly diagnosed also in extremely preterm infants. Previous studies demonstrated the association between maternal use of selective serotonin re-uptake inhibitors during gestation and pulmonary hypertension. This brief report describes the complex physiopathological correlations that were identified in a case of severe pulmonary hypertension in a fetal growth restricted (FGR) preterm infant, with a history of maternal use of antidepressants during pregnancy. Perinatal factors, triggers and aggravating mechanisms caused a dramatic clinical course. Maternal history of escitalopram therapy throughout pregnancy was noted. Uteroplacental insufficiency, fetal hypoxia, FGR, preeclampsia, preterm delivery, antenatal steroids, and cesarean section were documented as concurrent risk factors. Myocardial immaturity and dysfunction, secondary to FGR and prematurity aggravated the hemodynamic compromise. The short time gap between pharmacological ductal closure and the onset of PPHN may suggest a cause-effect relationship, as observed in previous reports. Placental histopathologic findings are reported.

Delivery Room Intensive Care Unit: 5 Years' Experience in Assistance of High-Risk Newborns at a Referral Center.

Objective: The aim of the study is to describe a delivery room intensive care unit (DRICU) model and evaluate its effectiveness in preventing morbidity and mortality in high-risk newborns. Design: This retrospective case series includes all DRICU procedures performed from 2016 to 2020. Setting: Gaslini Children's Hospital is a major pediatric tertiary care center where high-risk pregnancies are centralized. The Neonatal and Pediatric Intensive Care Unit admits every year about 100 high-risk newborns. Patients: The selected patients are newborns at risk of critical conditions immediately after birth for respiratory or cardiovascular congenital disorders. Interventions: The perinatal plan is defined by the multidisciplinary team of Fetal and Perinatal Medicine. The DRICU procedure provides highly specialized care through a protocol that includes logistics, personnel, equipment, and clinical pathways. Main Outcome Measures: The primary outcome is the prevention of acute complications and mortality in the delivery room and early neonatal period. Results: From 2016 to 2020, 40 DRICU procedures were performed. The main prenatal diagnoses included congenital heart disease with a high risk of life-threatening events immediately after birth (38%), congenital diaphragmatic hernia (35%), and fetal hydrops/hydrothorax (23%). Mean gestational age was 35.9 weeks (range: 31-39), and mean birth weight was 2,740 grams (range: 1,480-3,920). DRICU assistance completed in all patients by neonatal intensivists included tracheal intubation and arterial and central venous cannulation; complex procedures such as ex-utero intrapartum technique and extracorporeal membrane oxygenation cannulation are described. No deaths nor severe acute complications occurred in the delivery room or in the immediate postnatal period. Conclusions: The outcome in critical newborns is potentially affected by planned assistance strategies and specialized competencies through the implementation of a DRICU protocol.

Listeria meningitis complicated by hydrocephalus in an immunocompetent child: case report and review of the literature.

BACKGROUND: Listeria monocytogenes is a Gram-positive bacteria transmitted to human by animal stools, contaminated water and food. In children, Listeria monocytogenes typically affects newborns and immunocompromised patients often leading to invasive syndromes including sepsis, brain abscesses, meningitis, meningoencephalitis and rhombencephalitis. In healthy and immunocompetent children, Listeria meningitis is rare, but can progress rapidly and may be associated with severe complications (hydrocephalus, ventriculitis, cranial nerves palsy and cerebrospinal abscesses) and high mortality rate. CASE PRESENTATION: We describe a very uncommon case of meningoencephalitis due to Listeria monocytogenes in a 11-month-old immunocompetent girl. Cerebrospinal fluid (CSF) culture was positive on the second day. Antibiotic therapy was promptly started but the disease was complicated by neurological deterioration and decompensated hydrocephalus. The child required a very demanding pediatric and neurosurgical management and was discharged after 40 days without major sequelae. CONCLUSION: Listeria is difficult to isolate and it is not susceptible to first-line treatment for bacterial meningitis with extended-spectrum cephalosporins. Early recognition is therefore crucial for a positive outcome. Pediatricians have to perform close clinical monitoring of these children and be aware of possible complications. A review of all cases of Listeria meningitis complicated by hydrocephalus in healthy children has been performed, to provide an overview on clinical features, treatment options and outcome.