Complications Of Prematurity Research Articles

Transcriptional profiling of lung macrophages identifies a predictive signature for inflammatory lung disease in preterm infants

Lung macrophages mature after birth, placing newborn infants, particularly those born preterm, within a unique window of susceptibility to disease. We hypothesized that in preterm infants, lung macrophage immaturity contributes to the development of bronchopulmonary dysplasia (BPD), the most common serious complication of prematurity. By measuring changes in lung macrophage gene expression in preterm patients at risk of BPD, we show here that patients eventually developing BPD had higher inflammatory mediator expression even on the first day of life. Surprisingly, the ex vivo response to LPS was similar across all samples. Our analysis did however uncover macrophage signature genes whose expression increased in the first week of life specifically in patients resilient to disease. We propose that these changes describe the dynamics of human lung macrophage differentiation. Our study therefore provides new mechanistic insight into both neonatal lung disease and human developmental immunology.

Characterization of the innate immune response in a novel murine model mimicking bronchopulmonary dysplasia.

Bronchopulmonary dysplasia (BPD), the most common complication of prematurity, arises from various factors that compromise lung development, including oxygen and inflammation. Hyperoxia has been used to mimic the disease in newborn rodents. The use of a second hit to induce systemic inflammation has been suggested as an added strategy to better mimic the inflammatory aspect of BPD. Here we report a novel 2 hit (2HIT) BPD model with in-depth characterization of the innate immune response, enabling mechanistic studies of therapies with an immunomodulatory component. C57BL/6N mice were exposed to 85% O2 from postnatal day (P)1 to P7, and received postnatally (P3) Escherichia coli LPS. At various timepoints, immune activation in the lung and at the systemic level was analyzed by fluorescence-activated cell sorting (FACS), and gene and protein expressions. 2HIT mice showed fewer alveoli, increased lung compliance, and right ventricular hypertrophy. A transient proinflammatory cytokine response was observed locally and systemically. Type 2 anti-inflammatory cytokine expression was decreased in the lung together with the number of mature alveolar macrophages. Simultaneously, a Siglec-F intermediate macrophage population emerged. This study provides long-term analysis of the 2HIT model, suggesting impairment of type 2 cytokine environment and altered alveolar macrophage profile in the lung. We have developed a novel 2HIT mouse BPD model with postnatal LPS and hyperoxia exposure, which enables mechanistic studies of potential therapeutic strategies with an immunomodulatory component. This is the first report of in-depth characterization of the lung injury and recovery describing the evolution of the innate immune response in a standardized mouse model for experimental BPD with postnatal LPS and hyperoxia exposure. The 2HIT model has the potential to help understand the link between inflammation and impaired lung development, and will enable testing of new therapies in a short and more robust manner.

Role of Nutrition in Prevention of Neonatal Spontaneous Intestinal Perforation and Its Complications: A Systematic Review.

Background: Spontaneous intestinal perforation (SIP) is a devastating complication of prematurity, and extremely low birthweight (ELBW < 1000 g) infants born prior to 28 weeks are at highest risk. The role of nutrition and feeding practices in prevention and complications of SIP is unclear. The purpose of this review is to compile evidence to support early nutrition initiation in infants at risk for and after surgery for SIP. Methods: A search of PubMed, EMBASE and Medline was performed using relevant search terms according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. s and full texts were reviewed by co-first authors. Studies with infants diagnosed with SIP that included information on nutrition/feeding practices prior to SIP and post-operatively were included. Primary outcome was time to first feed. Secondary outcomes were incidence of SIP, time to full enteral feeds, duration of parenteral nutrition, length of stay, neurodevelopmental outcomes and mortality. Results: Nineteen articles met inclusion criteria—nine studies included feeding/nutrition data prior to SIP and ten studies included data on post-operative nutrition. Two case series, one cohort study and sixteen historical control studies were included. Three studies showed reduced incidence of SIP with initiation of enteral nutrition in the first three days of life. Two studies showed reduced mortality and neurodevelopmental impairment in infants with early feeding. Conclusions: Available data suggest that early enteral nutrition in ELBW infants reduces incidence of SIP without increased mortality.

Morphometric and functional pulmonary changes of premature neonatal puppies after antenatal corticoid therapy

Among prematurity complications, the most important disorder is structural immaturity and inadequate production of pulmonary surfactant. Betamethasone is the drug of choice to artificially improve pulmonary capacity, thus we aimed to verify the effect of prenatal maternal treatment on lung development of premature puppies. Pregnant bitches were allocated in Term Group (n = 7), Preterm-Treated Group (interrupted pregnancies with maternal administration of betamethasone; n = 7), Preterm-Control Group (untreated interrupted pregnancies; n = 7), Extremely-Preterm Group (interrupted pregnancies at 55d; n = 6). Puppies were subjected to chest radiographic at birth, morphometric description of pulmonary structures and immunohistochemical analysis of surfactant protein B, proliferating cell nuclear antigen and cytokeratin were performed. In Preterm-Treated Group it was possible to more clearly identify cardiac silhouette and lung parenchyma by X-Ray. Saccular formation was higher in Preterm Groups, while Term Group had higher subsaccular development. Lung septation was higher in Treated and Term Groups. Term Group had higher number of cells marked for SP-B, whereas higher proliferation was observed in Extreme-Preterm and Preterm-Control Groups. Preterm Treated and Term Groups had higher tissue differentiation. In conclusion, antenatal maternal corticotherapy in dogs acted by increasing lung morphology and development of areas of gas exchange, regulate metabolism of pulmonary fluids rather than stimulate surfactant production.

Rho/SMAD/mTOR triple inhibition enables long-term expansion of human neonatal tracheal aspirate-derived airway basal cell-like cells.

Bronchopulmonary dysplasia remains one of the most common complications of prematurity, despite significant improvements in perinatal care. Functional modeling of human lung development and disease, like BPD, is limited by our ability to access the lung and to maintain relevant progenitor cell populations in culture. We supplemented Rho/SMAD signaling inhibition with mTOR inhibition to generate epithelial basal cell-like cell lines from tracheal aspirates of neonates. Single-cell RNA-sequencing confirmed the presence of epithelial cells in tracheal aspirates obtained from intubated neonates. Using Rho/SMAD/mTOR triple signaling inhibition, neonatal tracheal aspirate-derived (nTAD) basal cell-like cells can be expanded long term and retain the ability to differentiate into pseudostratified airway epithelium. Our data demonstrate that neonatal tracheal aspirate-derived epithelial cells can provide a novel ex vivo human cellular model to study neonatal lung development and disease. Airway epithelial basal cell-like cell lines were derived from human neonatal tracheal aspirates. mTOR inhibition significantly extends in vitro proliferation of neonatal tracheal aspirate-derived basal cell-like cells (nTAD BCCs). nTAD BCCs can be differentiated into functional airway epithelium. nTAD BCCs provide a novel model to investigate perinatal lung development and diseases.

Under-Five Mortality in Buea Health District, Southwest Cameroon: Evidence from a Community-Based Birth Cohort Study of Rate, Causes, and Age-Specific Patterns.

Background Updating the knowledge base on the causes and patterns of under-five mortality (U5M) is crucial for the design of suitable interventions to improve survival of children under five. Objectives To assess the rate, causes, and age-specific patterns of U5M in Buea Health District, Cameroon. Methods A retrospective cohort study involving 2000 randomly selected households was conducted. Live births registered between September 2004 and September 2009 were recorded. The under-five mortality rate (U5MR) was defined by the number of deaths that occurred on or before 5 years of age per 1000 live births. Causes of death were assigned using the InterVA-4 software. Results A total of 2210 live births were recorded. There were 92 deaths, and the U5MR was 42 per 1000 live births. The mean age at death was 11 ± 15.9 months. The most frequent causes of death were neonatal causes (37%), malaria (28%), and pneumonia (15%). Deaths during infancy accounted for 64.1% of U5M, with 43.5% neonatal (86% occurring within the first 24 hours of life) and 20.7% postneonatal. The main causes of death in infancy were birth asphyxia (37.5%), pneumonia (17.5%), complications of prematurity (10%), and malaria (10%). Child deaths accounted for 35.8% of U5M. Malaria, pneumonia, and diarrhoeal illnesses accounted for the majority of child deaths. Conclusions Almost half of U5M occurred during the neonatal period. Improvements in intrapartum care and the prevention and effective treatment of neonatal conditions, malaria, and pneumonia could considerably reduce U5M in Buea.

Identifying donor-dependent differences in the ability of umbilical cord msc to attenuate lung injury in a hyperoxic rodent bronchopulmonary dysplasia model

Background & Aim The chronic lung disease bronchopulmonary dysplasia (BPD) is the most severe complication of prematurity. BPD occurs following ventilator treatment with supplemental oxygen for acute respiratory failure, and early inflammation. The hallmarks of the lung pathology are arrested lung development including fewer and larger alveoli with less septation, thickening of alveolar septa and impaired development of the capillary network. These changes may lead to life-long respiratory morbidity including asthma, reduced exercise capacity, early onset emphysema and pulmonary hypertension. Currently, there is no treatment for BPD. Mesenchymal stromal cells derived from the umbilical cord (UC-MSCs) improve lung structure and function in experimental BPD, and early phase clinical trials are underway. However, the optimal UC-MSC donor remains to be determined. The aim of this project is to compare healing effects of UC-MSC donors in hyperoxia-induced experimental BPD. Methods, Results & Conclusion UC-MSCs derived from 5 human donors (1st term delivery [TMSC], 2nd term delivery [T2MSC], preterm delivery [PMSC], preterm delivery with preeclampsia [PPMSC], preterm delivery with chorioamnionitis [PCMSC]) were administered intratracheally at postnatal day (P) 4 in rat pups exposed to 85% oxygen from P0 to P14. At P21, survival, lung function (flexivent), lung structure (mean linear intercept), right ventricular hypertrophy (Fulton index), as well as lung vasculature at P35 (microCT) were assessed. Treatment with UC-MSCs increased survival in hyperoxia-exposed developing pups. In addition, TMSC, PMSC, PPMSC and PCMSC, but not T2MSC, improved lung compliance, lung growth and attenuated pulmonary hypertension when compared to control hyperoxic pups. Thus, donor source impacts beneficial effects of UC-MSCs in a rat BPD model. In the future, understanding the differences at the transcriptomic level between UC-MSC donors might improve the identification of the optimal MSC source for treatment of complications of extreme prematurity, the number one killer of infants below the age of 5.

Intraventricular Hemorrhage and Posthemorrhagic Ventricular Dilation: Current Approaches to Improve Outcomes.

Intraventricular hemorrhage (IVH) and posthemorrhagic ventricular dilation (PHVD) are important complications of prematurity with short- and long-term implications for the patient and for nursing care. Several approaches have been shown to reduce the incidence of IVH and, more recently, mitigate the impact of IVH on long-term neurodevelopment. This article discusses the pathophysiology of IVH, with a focus on prevention strategies. Posthemorrhagic ventricular dilation is a common complication of severe IVH and has implications for neurodevelopmental sequelae. Both surgical and nonsurgical interventions for PHVD are described.

A Combined Ultrasonic Backscatter Parameter for Bone Status Evaluation in Neonates.

Metabolic bone disease (MBD) is one of the major complications of prematurity. Ultrasonic backscatter technique has the potential to be a portable and noninvasive method for early diagnosis of MBD. This study firstly applied CAS to neonates, which was defined as a linear combination of the apparent integrated backscatter coefficient (AIB) and spectral centroid shift (SCS). The objective was to evaluate the feasibility of ultrasonic backscatter technique for assessing neonatal bone health using AIB, SCS, and CAS. Ultrasonic backscatter measurements at 3.5 MHz, 5.0 MHz, and 7.5 MHz were performed on a total of 505 newborns within 48 hours after birth. The values of backscatter parameters were calculated and compared among gestational age groups. Correlations between backscatter parameters, gestational age, anthropometric indices, and biochemical markers were analyzed. The optimal predicting models for CAS were determined. The results showed term infants had lower SCS and higher AIB and CAS than preterm infants. Gestational age and anthropometric indices were negatively correlated with SCS (|r| = 0.45 – 0.57, P < 0.001), and positively correlated with AIB (|r| = 0.36 – 0.60, P < 0.001) and CAS (|r| = 0.56 – 0.69, P < 0.001). Biochemical markers yielded weak or nonsignificant correlations with backscatter parameters. CAS had relatively stronger correlations with the neonatal variables than AIB and SCS. At 3.5 MHz and 5.0 MHz, only gestational age (P < 0.001) independently contributed to the measurements of CAS, and could explain up to 40.5% – 44.3% of CAS variation. At 7.5 MHz, the combination of gestational age (P < 0.001), head circumference (P = 0.002), and serum calcium (P = 0.037) explained up to 40.3% of CAS variation. This study suggested ultrasonic backscatter technique was feasible to evaluate neonatal bone status. CAS was a promising parameter to provide more information about bone health than AIB or SCS alone.

Genetic predisposition for vitamin D deficiency is not associated with adverse outcome of very low birth weight infants: A cohort study from the German Neonatal Network.

ObjectivePostnatal vitamin D supplementation is standard of care in neonates and preterm infants. Despite routine supplementation of vitamin D, a wide range of complications related to vitamin D deficiency has been described in the literature. Since standard vitamin D supplementation might be not sufficient in preterm infants with a genetic predisposition for vitamin D deficiency, we investigated the outcome of preterm infants with regard to their genetic estimated vitamin D levels.MethodsPreterm infants with a birth weight below 1500 grams were included in the German Neonatal Network at the time of their birth and tested at the age of five. The vitamin D level was genetically calculated based on three single nucleotide polymorphisms (SNPs: rs12794714, rs7944926 and rs2282679) which alter vitamin D synthesis pathways. Specific alleles of these polymorphisms are validated markers for low plasma vitamin D levels. Outcome data were based on baseline data at the time of birth, typical complications of prematurity, body measurements at the age of five and occurrence of bone fractures. T-test and Fisher’s exact test were used for statistical comparison.ResultsAccording to their genetic predisposition, 1,924 preterm infants were divided into groups of low (gsVitD < 20. Percentile), intermediate and high vitamin D level estimates. Low genetic vitamin D level estimates could not be shown to be associated with any adverse outcome measures examined. The analyses covered data on aforementioned determinants.ConclusionLow genetic vitamin D level estimates could not be shown to be associated with previously described adverse outcome in preterm infants.

Oropharyngeal colostrum therapy reduces the incidence of ventilator-associated pneumonia in very low birth weight infants: a systematic review and meta-analysis.

BackgroundOropharyngeal colostrum (OC) is a novel feeding strategy to prevent complications of prematurity. A meta-analysis was conducted to investigate whether very low birth weight infants (VLBWs) can benefit from OC.MethodsRandomized controlled trials (RCTs) were searched from Embase, PubMed, Web of Science, and Cochrane Central Register of Controlled Trials from the date of inception until May 2019. RCTs were eligible if they used OC therapy on VLBW infants. The primary outcomes included ventilator-associated pneumonia (VAP), necrotizing enterocolitis (NEC), bronchopulmonary dysplasia (BPD), late-onset sepsis, and death. The secondary outcomes included the time of full enteral feeding and the length of stay.ResultsEight RCTs involving 682 patients (OC group: 332; non-OC group: 350) were included in the meta-analysis. The results suggested that OC was associated with a significantly reduced incidence of VAP [odds ratio (OR) = 0.39, 95% confidence interval (CI): 0.17–0.88, P = 0.02] and full enteral feeding days (mean difference = −2.66, 95% CI: −4.51 to −0.80, P = 0.005), a potential significance of NEC (OR = 0.51, 95% CI: 0.26–0.99, P = 0.05), a trend toward downregulating mortality (OR = 0.60, 95% CI: 0.34–1.08, P = 0.09) and proven sepsis (OR = 0.64, 95% CI: 0.40–1.01, P = 0.06).ConclusionsOC could significantly reduce the occurrence of VAP, and consequently, its routine use should be considered for VLBWs to prevent infectious diseases.Impact OC significantly reduces the occurrence of VAP and NEC in VLBW infants.OC may reduce the incidence of VAP and NEC by increasing IgA levels.Early OC therapy for mechanical ventilation of low-weight infants may prevent the occurrence of VAP.

Hypertension and Micro-Vascular Complications Among Type 2 Dm Adult Patients in Mukalla, Yemen

The Background and Purpose: to assess the prevalence of hypertension and micro-vascular complications among type 2 diabetic patients registered in primary health care center in Mukalla city at eastern Yemen. Methods: A Cross-sectional study was conducted in a randomly selected eligible patients from the diabetic registry of the AL Noor Charity Center (ACC), Mukalla city in Yemen. Results: Prevalence of hypertension in the T2DM patients were 46.7% (56/120). Retinopathy is the most micro-vascular complications among the adults having T2DM (73/120, 60.8%) while nephropathy is the least prevalence (13/120, 10.8%), prevalence of neuropathy was 49.2% (59/120). a high prevalence of retinopathy in males (66%) than females (55.7%) and a high prevalence of neuropathy in male adults (52.2%) than females (46%).No statistical significant difference were exit related to gender for any studied complications. Similar findings were observed regarding age related variations. Conclusion: A high prevalence of hypertension, retinopathy and neuropathy were reported among T2DM patients in Mukalla. Adopting effective and safe treatment strategies are highly recommended to prevent premature death and complications due to DM.

Improving Skin-to-Skin Practice for babies in Kangaroo Mother Care in Malawi through the use of a customized baby wrap: A randomized control trial.

Complications of prematurity are a leading cause of newborn death in Malawi. Despite early adoption of Kangaroo mother care (KMC), coverage remains low and women have expressed challenges in using the traditional wrapper-chitenje. In 2016, a study was conducted to evaluate the acceptability and effectiveness of a customized KMC wrap in improving adherence to KMC practices among mothers. Mother-baby dyads (301) were randomized to receive either a customized CarePlus Wrap developed by Lærdal Global Health or a traditional chitenje. Enrolled mother-baby dyads were assessed in the KMC ward at 2-3 days after of admission, and then again at 7-15 days post-discharge. Topics covered included skin-to-skin practices, breastfeeding, perceptions of the wrap, and family/community support. Chi square tests were used to assess associations between wrap type and KMC practices. The study received ethics approval. This study found that a customized KMC wrap is highly acceptable to women and improved skin-to-skin practices in facility-based KMC: 44% of mothers using a customized wrap reported 20 or more hours per day, compared to 33% of mothers using the traditional chitenje. Women using the customized wrap reported being comfortable in keeping the baby in skin-to-skin position more often than women using the chitenje (96% vs. 71%), and they were able to tie on the wrap themselves (86% vs. 10%). At the time of discharge from KMC, more women who used the customized wrap were satisfied with the wrap than those who used the traditional chitenje (94% vs. 56%). The customized wrap did not appear to impact other newborn practices, such as breastfeeding. This study provides evidence that a customized KMC wrap is highly acceptable to mothers, and it can contribute to better skin-to-skin practices. Use of a customized wrap may be one mechanism to support mothers in practicing KMC and skin-to-skin contact in addition to other interventions.

The Role of Hemoglobin Oxidation Products in Triggering Inflammatory Response Upon Intraventricular Hemorrhage in Premature Infants.

Intraventricular hemorrhage (IVH) is a frequent complication of prematurity that is associated with high neonatal mortality and morbidity. IVH is accompanied by red blood cell (RBC) lysis, hemoglobin (Hb) oxidation, and sterile inflammation. Here we investigated whether extracellular Hb, metHb, ferrylHb, and heme contribute to the inflammatory response after IVH. We collected cerebrospinal fluid (CSF) (n = 20) from premature infants with grade III IVH at different time points after the onset of IVH. Levels of Hb, metHb, total heme, and free heme were the highest in CSF samples obtained between days 0 and 20 after the onset of IVH and were mostly non-detectable in CSF collected between days 41 and 60 of post-IVH. Besides Hb monomers, we detected cross-linked Hb dimers and tetramers in post-IVH CSF samples obtained in days 0–20 and 21–40, but only Hb tetramers were present in CSF samples obtained after 41–60 days. Vascular cell adhesion molecule-1 (VCAM-1) and interleukin-8 (IL-8) levels were higher in CSF samples obtained between days 0 and 20 than in CSF collected between days 41 and 60 of post-IVH. Concentrations of VCAM-1, intercellular adhesion molecule-1 (ICAM-1), and IL-8 strongly correlated with total heme levels in CSF. Applying the identified heme sources on human brain microvascular endothelial cells revealed that Hb oxidation products and free heme contribute to the inflammatory response. We concluded that RBC lysis, Hb oxidation, and heme release are important components of the inflammatory response in IVH. Pharmacological interventions targeting cell-free Hb, Hb oxidation products, and free heme could have potential to limit the neuroinflammatory response following IVH.

Late Rescue Therapy with Cord-Derived Mesenchymal Stromal Cells for Established Lung Injury in Experimental Bronchopulmonary Dysplasia.

Bronchopulmonary dysplasia (BPD), the main complication of extreme prematurity, has lifelong consequences for lung health. Mesenchymal stromal cells (MSCs) prevent lung injury in experimental BPD in newborn rodents when given in the immediate neonatal period. Whether MSC therapy can restore normal lung growth after established lung injury in adulthood is clinically relevant, but currently unknown. Experimental BPD was achieved by exposing newborn rats to 95% O2 from postnatal days 4-14. Human umbilical cord-derived MSCs were intratracheally administered to rats (1 × 106cells/kg body weight) as a single dose at 3 or 6 months of age followed by assessment at 5 or 8 months of age, respectively. Lung alveolar structure and vessel density were histologically analyzed. O2-exposed rats exhibited persistent lung injury characterized by arrested alveolar growth with airspace enlargement and a lower vessel density at both 5 and 8 months of age compared with controls. Single-dose MSC treatment at 3 months partially attenuated O2-induced alveolar injury and restored vessel density at 5 months. Treatment with a single dose at 6 months did not attenuate alveolar injury or vessel density at 8 months. However, treatment with multiple MSC doses at 6, 6.5, 7, and 7.5 months significantly attenuated alveolar injury and improved vessel density at 8 months of age. Treatment of the adult BPD lung with MSCs has the potential to improve lung injury if administered in multiple doses or at an early stage of adulthood.

N-acetylcysteine inhibits bacterial lipopeptide-mediated neutrophil transmigration through the choroid plexus in the developing brain

The etiology of neurological impairments associated with prematurity and other perinatal complications often involves an infectious or pro-inflammatory component. The use of antioxidant molecules have proved useful to protect the neonatal brain from injury. The choroid plexuses-CSF system shapes the central nervous system response to inflammation at the adult stage, but little is known on the neuroimmune interactions that take place at the choroidal blood-CSF barrier during development. We previously described that peripheral administration to neonatal mice of the TLR2 ligand PAM3CSK4 (P3C), a prototypic Gram-positive bacterial lipopeptide, induces the migration of innate immune cells to the CSF. Here we showed in neonatal rats exposed to P3C that the migration of neutrophils into the CSF, which occurred through the choroid plexuses, is abolished following administration of the antioxidant drug N-acetylcysteine. Combining light sheet microscopy imaging of choroid plexus, a differentiated model of the blood-CSF barrier, and multiplex cytokine assays, we showed that the choroidal epithelium responds to the bacterial insult by a specific pattern of cytokine secretion, leading to a selective accumulation of neutrophils in the choroid plexus and to their trafficking into CSF. N-acetylcysteine acted by blocking neutrophil migration across both the endothelium of choroidal stromal vessels and the epithelium forming the blood-CSF barrier, without interfering with neutrophil blood count, neutrophil tropism for choroid plexus, and choroidal chemokine-driven chemotaxis. N-acetylcysteine reduced the injury induced by hypoxia-ischemia in P3C-sensitized neonatal rats. Overall, the data show that a double endothelial and epithelial check point controls the transchoroidal migration of neutrophils into the developing brain. They also point to the efficacy of N-acetylcysteine in reducing the deleterious effects of inflammation-associated perinatal injuries by a previously undescribed mechanism, i.e. the inhibition of innate immune cell migration across the choroid plexuses, without interfering with the systemic inflammatory response to infection.

Frequency, Extent, and Correlates of Superficial Siderosis and Ependymal Siderosis in Premature Infants with Germinal Matrix Hemorrhage: An SWI Study.

Germinal matrix intraventricular hemorrhage is a common complication of prematurity. An underrecognized complication of germinal matrix intraventricular hemorrhage is superficial siderosis, and the clinical consequences of superficial siderosis are not well-known. We aimed to investigate the prevalence, anatomic distribution, and severity of superficial siderosis and ependymal siderosis in premature infants with germinal matrix intraventricular hemorrhage using SWI. In this retrospective study, we included 88 patients across all grades of germinal matrix intraventricular hemorrhage who underwent MR imaging at term-equivalent age. Images were evaluated for the presence, distribution, and severity of superficial siderosis and ependymal siderosis. Univariate and multivariate logistic regression analyses were performed to determine factors associated with superficial siderosis and ependymal siderosis. The agreement among T1, T2, and SWI sequences was examined. Seventy-two patients had brain stem superficial siderosis, and 79 patients had ependymal siderosis. The presence, extent, and severity of superficial siderosis and ependymal siderosis were closely related to the grade of germinal matrix intraventricular hemorrhage and intraventricular hematoma volume. Brain stem superficial siderosis had a stronger correlation with intraventricular hemorrhage than with cerebellar hemorrhage. Compared with SWI, T1 and T2 sequences detected only small proportions of patients with superficial siderosis (12.5% and 6.9%, respectively). The incidence of superficial siderosis and ependymal siderosis is very high in preterm infants with germinal matrix intraventricular hemorrhage when assessed by SWI at term-equivalent age. The presence and extent of superficial siderosis and ependymal siderosis are closely related to germinal matrix intraventricular hemorrhage grade and intraventricular hematoma volume. Additional prospective studies using SWI are needed to clearly determine the clinical consequences of germinal matrix intraventricular hemorrhage with superficial siderosis and ependymal siderosis.

A multidisciplinary quality improvement effort to reduce bronchopulmonary dysplasia incidence.

BackgroundBronchopulmonary Dysplasia (BPD) is the most common prematurity complication. Although several practices have been proposed for BPD prevention, none of these in isolation prevent BPD.MethodsOur initiative focused on two key drivers: oxygen management and noninvasive ventilation strategies. We created best practice guidelines and followed outcome measures using Shewhart control charts.ResultsPDSAs of protocols preceded a large-scale rollout of a “0.21 by 28” campaign in 2014 leading to a special cause reduction in the “any BPD” rate, and a decrease in severe BPD (from 57 to 29%). At the end of 2017, we reinvigorated the project, which led to dramatic decreases in the “any BPD” rate to 41% and the “severe BPD” rate to 21%.ConclusionsA multidisciplinary QI initiative focused on process improvement geared towards the pathophysiological contributors of BPD has successfully reduced the rate of BPD in an all referral level IV NICU.

Neonatal Profile and Outcome in Neonatal Intensive Care Unit Sanglah Hospital

Children face the highest risk of dying in their first month of life, at an average global rate of 2.5 million deaths in 2018. The highest neonatal mortality rate in 2018 occurred in Sub-Saharan Africa which reached 28 deaths per 1000 live births, followed by East Mediaterania with 25 deaths per 1000 live births. Meanwhile, based on Central Bureau of Statistics, the neonatal mortality rate in Indonesia were 15 deaths per 1000 live births in 2017. More than 80% death in neonates caused by 3 preventable factors such as complication of prematurity, complication of birth like asphyxia and neonatal infection (such as sepsis and pneumonia). Furthermore intensive care unit play crucial role in critically ill neonate. In this study we aimed to determine profile and outcome of neonates treated in Neonatal Intensive Care Unit (NICU) of Sanglah Hospital. This was a descriptive cross sectional study and data was taken retrospectively from medical record of neonates treated in NICU during 2019. We got 393 neonates admitted in NICU, but forty patients were excluded due to readmission and insufficient data. Finally there were 208 (62.1%) male neonates and 127 (37.9%) female neonates, with 208 subjects were premature neonates (<37 weeks). Their median length of stay was 7 days. Most cases were treated due to respiratory distress (84.1%). In 2019, we found 111 neonates passed away with sepsis as the most common cause of neonatal death. Neonates treated in NICU were dominated by premature neonates, male and low birth weight (<2500 gram). There was 28.2% neonatal death in 2019.

Short-term outcome of very low-birth-weight infants in a tertiary care hospital in Saudi Arabia over a decade.

Knowledge on short-term outcomes of preterm infants is important for quality control. Our objective was to analyze the outcomes of very low birth weight infants admitted to our neonatal intensive care unit over a ten years' period and to compare the results with internationally published data. We analyzed the outcome measures for all live born infants with birth weight (BW) of 400-1500 grams and gestational age (GA) of 23-32 weeks born at King Faisal Specialist Hospital & Research Centre between 2006 and 2015. Results were compared to data from four international neonatal networks. During the study period, we admitted 528 infants born at a gestational age of≥23 and≤32 weeks with a very low birth weight (VLBW) of 400-1500 grams. Mean (SD) GA was 28 (2.4) weeks and mean (SD) BW was 1007 (290) grams. A hundred and twenty-nine (24.4%) infants were small for gestational age and major congenital anomalies were present in 56 (10.6 %) infants. The rate of bronchopulmonary dysplasia (BPD) was 24.4 %, necrotizing enterocolitis (NEC) 9.1%, patent ductus arteriosus (PDA) 29.9%, severe intraventricular hemorrhage (IVH)10.8 %, periventricular leukomalacia (PVL) 5.7%, severe retinopathy of prematurity (ROP) 8%, and late-onset sepsis was 18.8%. The incidences of major neonatal outcomes such as CLD, NEC, severe IVH and severe ROP were comparable to the international cohorts. In our population of preterm infants, survival rates and complications of prematurity were comparable to international data.