Severity Of Neonatal Disease Research Articles

Modified Sick Neonatal Score (MSNS) in Predicting the Outcome of Neonates in Tertiary Care Hospital

Introduction: Neonatal disease severity scoring systems are widely used to predict severity of illness. Existing scoring systems contain variables like pH, PO2 / FiO2 ratio, and base excess, which are difficult to obtain in resource-limited settings. Modified sick neonatal score (MSNS) is based on eight clinical variables which are easy to calculate and are also accurate enough at the same time. This study was done to evaluate MSNS for predicting the outcome of neonates in our settings.
 Methods: This was prospective observational study done at neonatal intensive care unit (NICU) of tertiary care hospital in Nepal from February 2021 to January 2022. The parameters required for the score were recorded at admission. Total score was calculated and outcome was noted. Data collected was analyzed using SPSS Statistics for Windows, v21.0. Chi square test, Mann-Whitney U test and ROC analysis were used for statistical analysis.
 Results: Total of 195 neonates were discharged and 37 expired. The mean MSNS score among expired was 8.16 ± 1.625 and discharged was 10.99 ± 1.753. For a cutoff score of ≤ 10, sensitivity and specificity; Positive and negative predictive value were 89.2% and 60.5%; 30.7% and 98.3% respectively. The area under the curve (AUC) of MSNS was 0.875 (CI 95%; 0.817 - 0.934). Lower MSNS score was also associated with requirement of iontrope and ventilator support.
 Conclusions: MSNS can be used as an important clinical tool for predicting the severity of disease in neonates in resource limited settings.

Clinical Characteristics and Outcomes of SARS-CoV-2 Positive Neonates Born to Persons With SARS-CoV-2 Infection in Pregnancy in Los Angeles County, California, May 22, 2020-February 22, 2021.

It is well established that pregnant persons with SARS-CoV-2 are at an increased risk for preterm birth, however, less is known about perinatal outcomes for neonates with intrauterine exposure to SARS-CoV-2. Characteristics of 50 SARS-CoV-2 positive neonates born to SARS-CoV-2 pregnant persons positive between May 22, 2020, and February 22, 2021, in Los Angeles County, CA, were assessed. Pattern of neonate SARS-CoV-2 test results and time to positive test was analyzed. Objective clinical severity criteria were applied to assess neonatal disease severity. Median gestational age was 39 weeks with 8 (16%) neonates born preterm. Most (74%) were asymptomatic, while 13 (26%) were symptomatic from any cause. Four (8%) symptomatic neonates met criteria for severe disease, of which 2 (4%) were likely secondary to COVID-19. The other 2 with severe disease had more likely alternate diagnoses, and 1 of these neonates subsequently died at 7 months of life. Among 12 (24%) that were positive within 24 hours after birth, one was persistently positive and represented likely intrauterine transmission. Sixteen (32%) were admitted to the neonatal intensive care unit. In this case series of 50 SARS-CoV-2 positive mother-neonate pairs, we found that most neonates were asymptomatic regardless of when they tested positive during the 14 days after birth, that there was relatively low risk of COVID-19 associated severe disease, and that intrauterine transmission can occur in rare cases. Although short-term outcomes are mostly promising, more research is needed to study long-term consequences of SARS-CoV-2 infection in neonates born to positive pregnant persons.

Validation of modified sick neonatal score, a simple clinical score for assessment of severity of illness and outcome in new-borns for resource poor settings

Background: India contributes to 25% of the neonatal deaths worldwide each year. Neonatal disease severity scoring systems are needed to make standardized comparison between performances of different units and also give prognostic information. Existing scoring systems are unsuitable for resource-limited settings which lack investigations like pH, pO2/FiO2 ratio and base excess. Modified sick neonatal score (MSNS) is based on eight routinely measured clinical variables in NICUs namely respiratory effort, heart rate, axillary temperature, capillary refill time, random blood sugar, pulse oximeter saturation, gestational age and birth weight found to be useful in resource poor settings. The aim of the study was to validate MSNS score for its clinical utility in predicting mortality.Methods: This was a cross sectional study done at NICU of Mamata Medical College Hospital. The parameters required for the score were recorded immediately at admission in NICU from 1 January 2020 to 1 January 2021 and scored using Modified sick neonatal score (MSNS). The total score was calculated and outcome was noted. The data collected were coded and analzed using SPSS Statistics for Windows, v21.0 Chi square test, Mann-Whitney U test and ROC analysis.Results: Total of 355 neonates got discharged, while 45 neonates expired. For a cutoff score of ≤10, sensitivity and specificity were 85.9% and 51.1%, respectively. Positive predictive value and negative predictive value were 93.3% and 31.5%, respectively. The Area under the curve (AUC) was 0.811 (95%CI: 0.788-0.835), which indicates the accuracy of 81.1%.Conclusions: MSNS is a better suited neonatal disease severity score for resource poor settings.

Prevalence, serotypes and virulence genes of Streptococcus agalactiae isolated from pregnant women with 35\u201337\u2009weeks of gestation

BackgroundIn pregnant women Streptococcus agalactiae (GBS) can be transmitted to newborn causing severe infections. It is classified into 10 serotypes (Ia, Ib, II-IX). The severity of neonatal disease is determined by the capsular serotype and virulence factors such as the polysaccharide capsule, encoded by the cps gene, protein C, which includes the Cα surface proteins (bca gene), Rib (rib gene) and Cβ (bac gene); the proteins Lmb (lmb gene), FbsB (fbsB gene), FbsA (fbsA gene), the cyl operon encoding a β-hemolysin (hylB gene), the CAMP factor (cfb gene) and the C5a peptidase (scpB gene). The aim of this work was to determine the degree of GBS colonization in pregnant women, the serotypes distribution and to investigate virulence-associated genes.MethodsWe worked with 3480 samples of vagino-rectal swabs of women with 35–37 weeks of gestation. The identification of the strains was carried out using conventional biochemical tests and group confirmatory serology using a commercial latex particle agglutination kit. Two hundred GBS strains were selected. Their serotype was determined by agglutination tests. The monoplex PCR technique was used to investigate nine virulence-associated genes (cps, bca, rib, bac, lmb, fbsB, fbsA, hylB and scpB).ResultsThe maternal colonization was 9.09%. The serotypes found were: Ia (33.50%), III (19.00%), Ib (15.50%), II (14.00%), V (7.00%) and IX (5.50%). 5.50% of strains were found to be non-serotypeable (NT). The nine virulence genes investigated were detected simultaneously in 36.50% of the strains. The genes that were most frequently detected were scpB (100.00%), fbsA (100.00%), fbsB (100.00%), cylB (95.00%), lmb (94.00%) and bca (87.50%). We found associations between serotype and genes bac (p = 0.003), cylB (p = 0.02), rib (p = 0.01) and lmb (p < 0.001).ConclusionsThe frequency of vaginal-rectal colonization, serotypes distribution and associated virulence genes, varies widely among geographical areas. Therefore, epidemiological surveillance is necessary to provide data to guide decision-making and planning of prevention and control strategies.

Correlation of Oxygen Saturation Index and Oxygenation Index in Hypoxaemic Respiratory Failure among Neonates

Introduction: Hypoxaemic Respiratory Failure (HRF) is severe arterial hypoxaemia that is refractory to supplemental oxygen. Oxygen Saturation Index (OSI) can be an alternate method of diagnosing and assessing the severity of HRF as it uses Oxygen Saturation (SpO2) in place of Partial Pressure of Oxygen (PaO2) and may be utilised with reasonable sensitivity and specificity. Aim: To evaluate the correlation between OSI and Oxygenation Index (OI) in HRF in neonates. Materials and Methods: The prospective observational study was conducted in Kempegowda Institute of Medical Sciences and Hospital, Bengaluru, Karnataka, India, from December 2016 to July 2018. Fifty neonates who were admitted to Neonatal Intensive Care Unit (NICU) and conventionally ventilated in view of HRF were included. Arterial blood gases in the first 24 hours of life and corresponding oxygen saturations and ventilator settings were recorded. OI and OSI was calculated using the standard formula and their correlation was analysed. Results: The neonates were all on first day of life at admission to NICU and were invasively ventilated due to HRF. The mean birth weight was 1.89±0.84 kg. Of the 50 neonates, 22 (44%) were preterm babies (&lt;34 weeks), 17 (34%) belonged to late preterm group (34 weeks to 36 weeks +6 days), 9 (18%) were term babies (&gt;37 weeks), two neonates were extremely preterm (less than 28 weeks). In this study, OSI and OI significantly associated and correlated (p-value &lt;0.01) with a correlation coefficient r=0.727. Area under the Receiver Operating Characteristic (ROC) curve for OSI was 0.912 which indicates that OSI is an excellent test to assess the severity of HRF. Conclusion: That OSI can be used to diagnose and assess the severity of lung disease in neonates having HRF.

Saturation oxygenation pressure index: a non-invasive bedside measure for severity of respiratory disease in neonates on CPAP.

The treatment of respiratory distress in neonates ranges from non-invasive continuous positive airway pressure (CPAP) to advanced invasive mechanical ventilation. Monitoring on CPAP is often done by calculating oxygenation after blood gas analysis which is an invasive procedure. Saturation oxygen pressure index (SOPI) is a simple, non-invasive, bedside tool to monitor the severity of respiratory illness in neonates on CPAP. This study was aimed at validation of SOP index against AaDO2 and determine the cut-off values of SOPI for A-aDO2 of 70, 85 and100. This was a prospective observational study on 126 neonates with respiratory distress and treated with CPAP. The correlation between SOPI and A-aDO2 was validated using Bootstrap method. There was a significant positive correlation between SOPI and A-aDO2 with the Spearman correlation coefficient (rho) being 0.815 (p = 0). The mean coefficient of correlation after Bootstrap was 0.827 (p value < 0.0001). SOPI values of 1.52, 1.57 and 1.6 predicted A-aDO2 value of 70, 85 and 100 with a sensitivity of above 80% and specificity above 90%, respectively.Conclusion: SOPI has a significant positive correlation of 82.7% against A-aDO2 and can be a valuable tool to assess respiratory distress in neonates without arterial blood gas.What is Known:• Saturation oxygen pressure index (SOPI) is a non-invasive monitoring tool for neonates on N-CPAP.• SOPI has a good correlation with AaDO2.What is New:• Correlation of SOPI with AaDO2 is now validated.• Values between 1.52 and 1.88 indicate clinically useful range of AaDO2 for escalation of respiratory support from CPAP.

Perinatal aspects on the covid-19 pandemic: a practical resourcefor perinatal-neonatal specialists.

BackgroundLittle is known about the perinatal aspects of COVID-19.ObjectiveTo summarize available evidence and provide perinatologists/neonatologists with tools for managing their patients.MethodsAnalysis of available literature on COVID-19 using Medline and Google scholar.ResultsFrom scant data: vertical transmission from maternal infection during the third trimester probably does not occur or likely it occurs very rarely. Consequences of COVID-19 infection among women during early pregnancy remain unknown. We cannot conclude if pregnancy is a risk factor for more severe disease in women with COVID-19. Little is known about disease severity in neonates, and from very few samples, the presence of SARS-CoV-2 has not been documented in human milk. Links to websites of organizations with updated COVID-19 information are provided. Infographics summarize an approach to the pregnant woman or neonate with suspected or confirmed COVID-19.ConclusionsAs the pandemic continues, more data will be available that could lead to changes in current knowledge and recommendations.

Korelasi kadar laktat dengan Score for Neonatal Acute Physiology Perinatal Extension II (SNAPPE II) pada neonatus yang dirawat di NICU RSUP Sanglah, Bali, Indonesia

Background: Infant mortality rate is one of the indicators of public health degree that determines the human development index. Various attempts were made to early detect the problems, one of which was by assessing the severity of neonatal disease using Score for Neonatal Acute Physiology Perinatal Extension-II (SNAPPE II) which was associated with lactate levels as a metabolic response and organ dysfunction due to critical illness that were suffered at the Neonatal Intensive Care Unit (NICU).Methods: A cross-sectional analytic study was conducted among 48 critically ill neonates treated at the Sanglah Hospital Denpasar NICU. Samples were selected from affordable populations by consecutive sampling. Data analysis was performed by Saphiro-Wilk data normality test, correlation analysis using the Pearson correlation coefficient, significant results if the value of p &lt;0.05. Data were analyzed using SPSS version 17 for Windows.Results: Most of the respondents were males (67%), the mean of neonatal gestational age was 33 (± 3,2) weeks with the median neonatal age at lactate sampling being 24 (24-48) hours. The average age of the mother at delivery was 24 (21-40) years. The mean lactate level in critically ill neonatal patients admitted to the NICU was 3.2 (± 0,5) mmol / L. The mean SNAPPE II score on the subject was 32 (20-42). There was a significant positive correlation between the levels of lactate and the severity of the disease in critically ill neonates in the NICU assessed by SNAPPE II (r = 0.45; p = 0.004).Conclusion: Lactate levels has a moderate positive correlation with the severity of the disease in critically ill neonates in the NICU assessed by SNAPPE II

Modified Sick Neonatal Score (MSNS): A Novel Neonatal Disease Severity Scoring System for Resource-Limited Settings.

Neonatal disease severity scoring systems are needed to make standardized comparison between performances of different units and to give prognostic information to parents of individual babies admitted. Existing scoring systems are unsuitable for resource-limited settings which lack investigations like pH, pO2/FiO2 ratio, and base excess. This study was planned to evaluate Modified Sick Neonatal Score (MSNS), a novel neonatal disease severity score designed for resource-constrained settings. It was a facility-based cross-sectional analytical study, conducted in the “Special Newborn Care Unit” (SNCU) of government district hospital, attached to Kasturba Medical College, Mangalore, India from November 2016 to October 2017. A convenience sample of 585 neonates was included. Disease severity was assessed immediately at admission using MSNS. MSNS had 8 parameters with 0, 1, and 2 scores for each. 41% of study population was preterm (n=240), and 84.1% had birth weight less than 2500 grams (n=492). The mean (SD) of the total MSNS scores for neonates who expired and discharged was, respectively, 8.22 (2.96) and 13.4 (2.14), a difference being statistically significant at P < 0.001. Expired newborns had statistically significant frequency of lower scores across each of the parameters. An optimum cutoff score of ≤10 with 80% sensitivity and 88.8% specificity in predicting mortality was obtained when the ROC curve was generated with the MSNS score as the test variable. Area under the curve was 0.913 (95% CI: 0.879–0.946). In conclusion, MSNS is a practicable disease severity score in resource-restricted settings like district SNCUs. It is for application in both term and preterm neonates. Total score ≤10 has a good sensitivity and specificity in predicting mortality of admitted neonates when used early during the course of hospitalization. MSNS could be used as a tool to compare performance of SNCUs and also enable early referral of individual cases to units with better facilities.

The Correlation Between ABO Blood Group and Neonatal Disease Severity

The Correlation Between ABO Blood Group and Neonatal Disease Severity

Predictive value of Score for Neonatal Acute Physiology and Perinatal Extension II for neonatal mortality in Sanglah Hospital, Denpasar, Indonesia

Background Neonatal mortality, which is largely caused by severe illness, is the biggest contributor to overall infant mortality. The World Health Organization (WHO) estimated that 4 million neonates die yearly worldwide, often due to severe infection and organ system immaturity. Neonates with severe illness require treatment in the neonatal intensive care unit (NICU), in which a reliable assessment tool for illness severity is needed to guide intensive care requirements and prognosis. Neonatal disease severity scoring systems have been developed, including Score for Neonatal Acute Physiology and Perinatal Extension II (SNAPPE II), but it has never been validated in our setting.ObjectiveTo study the prognostic value of SNAPPE II as a predictor of neonatal mortality in Sanglah Hospital, Denpasar, Indonesia.Methods This prospective cohort study was conducted in the NICU of Sanglah Hospital, Denpasar from November 2014 to February 2015. All neonates, except those with congenital anomaly, were observed during the first 12 hours of admission and their outcomes upon discharge from the NICU was recorded. We assessed the SNAPPE II cut-off point to predict neonatal mortality. The calibration of SNAPPE II was done using the Hosmer-Lemeshow goodness-of-fit test, and discrimination of SNAPPE II was determined from the receiver-operator characteristic (ROC) curve and area under the curve (AUC) value calculation.ResultsDuring the period of study, 63 children were eligible, but 5 were excluded because of major congenital abnormalities. The SNAPPE II optimum cut-off point of 37 gave a high probability of mortality and the ROC showed an AUC of 0.92 (95%CI 0.85 to 0.99). The Hosmer-Lemeshow goodness-of-fit test showed a good calibration with P = 1.0Conclusion The SNAPPE II has a good predictive ability for neonatal mortality in Sanglah Hospital, Denpasar, Indonesia.

Are Cytokines Useful Biomarkers to Determine Disease Severity in Neonates with Congenital Diaphragmatic Hernia?

Background This study investigates plasma cytokine levels in neonates with the more common left-sided congenital diaphragmatic hernia (CDH) and correlates them with severity of disease indicated by position of the liver. An intrathoracic part of liver is associated with higher need for extracorporeal membrane oxygenation (ECMO) and higher risk for chronic lung disease (CLD). Methods A total of 28 newborns with CDH were subdivided by their liver position in partially intrathoracic (n = 16) and only abdominal (n = 12) position. Only liver-up patients went on ECMO (n = 9) and developed severe/moderate CLD (n = 5). Controls consisted of 19 healthy matched-term neonates. Laboratory samples were extracted from umbilical cord blood and during the neonatal period. Results In umbilical cord blood, CDH patients showed decreased IL-8 values while MIP-1a (macrophage inflammatory protein-1) values were increased. Concerning the severity of CDH, we measured significantly higher levels of TGFb2 in CDH patients with liver-up than in liver-down cases and controls (p < 0.006). During the neonatal period, the concentration of IL-10 and vascular endothelial growth factor (VEGF) showed significant deviations in the liver-up group with need for ECMO (p < 0.009). Conclusion In neonates with CDH, plasma cytokine levels are already altered in utero. TGFb2 may work as an early predictor for severity of disease. VEGF and IL-10 could serve as potential biomarkers predicting the course of disease in CDH.

Maternal HLA genotyping is not useful for predicting severity of fetal and neonatal alloimmune thrombocytopenia.

Lack of reliable laboratory parameters is the main challenge in the management of fetal and neonatal alloimmune thrombocytopenia (FNAIT). Despite the long-known association between the HLA-DRB3*01:01 allele and human platelet antigen 1a (HPA-1a) alloimmunisation, maternal human leucocyte antigen (HLA) typing has been of little clinical value. Recently, other DRB3 allele variants have been suggested to predict the severity of FNAIT. In this nationwide population-based retrospective cohort study, we performed extensive HLA typing of 96 women, accounting for 87% of our cohort of 110 families with confirmed or possible HPA-1a-immunisation. The HLA type was compared with anti-HPA-1a levels, severity of neonatal disease and responsiveness to maternally administrated intravenous gammaglobulin (IVIG). HLA haplotypes were constructed to investigate further HLA associations. Despite significantly lower anti-HPA-1a levels in DRB3*01:01-negative women, the carrier status of this particular allele could not be used to confirm or rule out FNAIT in the absence of detectable antibodies. In the haplotype analysis, the DRB3*01:01 allele was the actual factor associated with FNAIT. No other HLA allele was shown to be of additional value as a predictor of severe FNAIT or non-responsiveness to IVIG treatment. Thus, HLA genotyping was not found useful in differentiating high- and low-risk pregnancies or in guiding antenatal treatment in affected families.

Group B streptococcus infections in neonates admitted to a German NICU: Emphasis on screening and adherence to pre-analytical recommendations

BackgroundInfections by group B streptococci (GBS), e.g. Streptococcus agalactiae, presenting as early-onset disease (EOD) or late-onset disease (LOD), are leading causes of severe infections in newborn and premature patients. Although screening and intra partum antibiotic prophylaxis are frequently performed, vertically transmitted GBS remain a challenge for pediatrics. AimsIn order to prevent or reduce potential life-threatening events, this study retrospectively investigated epidemiological, microbiological and clinical aspects of infants admitted to the Division of Neonatology at the Department of Pediatrics at the University Hospital Frankfurt, Germany (UHF). Study design and subjectsBetween January 2010 and January 2016, perinatal GBS screening status, clinical presentation of EOD or LOD and therapeutic management of neonates admitted to UHF were retrospective analysed. Infants tested positive for GBS within their first three months of life were included; patient data were obtained from the chart report. Severity of neonatal disease was analysed by using the NEOMOD and CRIB score. Results108 GBS infected infants born to 105 mothers were observed. N=101 of them (93.5%) presented with EOD, whereof n=9 (10%) primarily presented with pneumonia or pneumothorax. In 82 (78%) mothers of infected infants GBS status was unknown prior to hospitalization of the neonate. 3/108 (2.8%) infants died from GBS septicemia. ConclusionAvoidance of GBS transmission sub partu is the key issue in preventing neonatal GBS infection and should be the focus of preventive strategies. Our results highlight the impact of perinatal screening.

Pain coping strategies: Neonatal intensive care unit survivors in adolescence

BackgroundData on long-term consequences of preterm birth on pain coping later in life are limited. AimTo assess whether gestational age, birth weight and neonatal disease severity have effect on pain coping style in adolescents born preterm or with low birth weight. Study designObservational, longitudinal study (Project On Preterm and SGA-infants, POPS-19). SubjectsWe analyzed data of 537 adolescents at the age of 19 years, who were born at a gestational age <32 weeks or with a birth weight <1500g. Outcome measuresParticipants completed the pain coping questionnaire (PCQ) that assesses pain coping strategies in three higher-order factors: approach (“to deal with pain”), problem-focused avoidance (“to disengage from pain”) and emotion-focused avoidance (“expression of pain”). Furthermore, their pain coping effectiveness, pain controllability and emotional reactions to pain were assessed. All participants completed an IQ test. ResultsUnivariate analysis showed no significant correlation between length of stay, sepsis and necrotizing enterocolitis and any of the higher-order factors. Approach was only correlated with IQ. Problem-focused avoidance was, in the multiple regression analysis (including gestational age, IVH and IQ), only correlated with IQ. For emotion-focused avoidance (including birth weight, SGA, IVH, respiratory support and IQ) three independent predictors remained: IVH was positively correlated, while respiratory support and IQ were negatively correlated with emotion-focused avoidance. ConclusionsEarly neonatal characteristics and neonatal disease severity have limited effect on pain coping style in adolescence. Higher IQ was associated with the use of adaptive coping strategies, while maladaptive strategies were used less.

The Correlation Between ABO Blood Group and Neonatal Disease Severity

The Correlation Between ABO Blood Group and Neonatal Disease Severity

Lung function over the first 3 years of life in children with congenital diaphragmatic hernia.

Infants with congenital diaphragmatic hernia (CDH) have variable degrees of pulmonary hypoplasia at birth. Few reports of lung function over the first years of life exist in this group of children. Pulmonary function abnormalities correlate with severity of neonatal disease and intensity of neonatal therapies needed. We also hypothesized that longitudinal measurements of lung function over the usual period of rapid lung growth would lend some insight into how the lung remodels in CDH infants. Ninety-eight infants with CDH between 11 days and 44 months of age underwent pulmonary function testing (PFT) on 1-5 occasions using the raised volume rapid thoracic compression technique. Demographic data were also collected. Forced expiratory flows were below normal. Total lung capacity was normal, but residual volume and functional residual capacity were elevated. Children requiring patch closure, ECMO, or pulmonary vasodilators generally had lower lung functions at follow up. Additionally, longer duration of mechanical ventilation correlated with worse lung function. Lung functions of survivors of CDH remain abnormal throughout the first 3 years of life. The degree of pulmonary function impairment correlated both with markers of the initial degree of pulmonary hypoplasia and the duration of mechanical ventilation. Understanding the relationship between the phenotypic presentation of CDH and the potential for subsequent lung growth could help refine both pre- and postnatal therapies to optimize lung growth in CDH infants.

CD144+ endothelial microparticles as a marker of endothelial injury in neonatal ABO blood group incompatibility.

ABO antigens are expressed on the surfaces of red blood cells and the vascular endothelium. We studied circulating endothelial microparticles (EMP) in ABO haemolytic disease of the newborn (ABO HDN) as a marker of endothelial activation to test a hypothesis of possible endothelial injury in neonates with ABO HDN, and its relation with the occurrence and severity of haemolysis. Forty-five neonates with ABO HDN were compared with 20 neonates with Rhesus incompatibility (Rh HDN; haemolytic controls) and 20 healthy neonates with matched mother and infant blood groups (healthy controls). Laboratory investigations were done for markers of haemolysis and von Willebrand factor antigen (vWF Ag). EMP (CD144(+)) levels were measured before and after therapy (exchange transfusion and/or phototherapy). vWF Ag and pre-therapy EMP levels were higher in infants with ABO HDN or Rh HDN than in healthy controls, and were significantly higher in babies with ABO HDN than in those with Rh HDN (p<0.05). In ABO HDN, pre-therapy EMP levels were higher in patients with severe hyperbilirubinaemia than in those with mild and moderate disease or those with Rh HDN (p<0.001). Post-therapy EMP levels were lower than pre-therapy levels in both the ABO HDN and Rh HDN groups; however, the decline in EMP levels was particularly evident after exchange transfusion in ABO neonates with severe hyperbilirubinaemia (p<0.001). Multiple regression analysis revealed that the concentrations of haemoglobin, lactate dehydrogenase and indirect bilirubin were independently correlated with pre-therapy EMP levels in ABO HDN. Elevated EMP levels in ABO HDN may reflect an IgG-mediated endothelial injury parallel to the IgG-mediated erythrocyte destruction and could serve as a surrogate marker of vascular dysfunction and disease severity in neonates with this condition.

Usefulness of maternal anti‐HPA‐1a antibody quantitation in predicting severity of foetomaternal alloimmune thrombocytopenia

To study the clinical usefulness of maternal anti-HPA-1a antibody levels in predicting severe foetomaternal alloimmune thrombocytopenia (FMAIT). Recent studies using an international anti-HPA-1a standard have shown a correlation between maternal antibody levels and neonatal thrombocytopenia. Cut-off values for identifying high-risk pregnancies have also been suggested. In 1986-2010, HPA-1a alloimmunisation was confirmed in 84 women with 129 pregnancies. Maternal samples were obtained at delivery and during subsequent pregnancies. Anti-HPA-1a was quantified using a MAIPA assay with a detection limit of 0·8 IU mL(-1) (WHO reference serum 03/152). Antibody levels were compared with the severity of neonatal disease in the index and in the subsequent pregnancies. In the index cases, the correlation between an anti-HPA-1a level and neonatal platelet count did not reach statistical significance (n = 77, P = 0·074). However, the platelet counts and antibody levels in cases with cutaneous (n = 45) or intracranial haemorrhage (n = 7) were significantly different from cases with no evidence of bleeding (n = 20). In the subsequent pregnancies, there was a stronger association between the second trimester anti-HPA-1a level and the foetal platelet count (n = 16, P = 0·046). The positive predictive value of the maternal antibody level for a foetal platelet count <20 × 10(9) L(-1) was 90%, but the negative predictive value only 31%. Although a higher anti-HPA-1a level correlated with a more severe neonatal disease, barely detectable antibody levels were also observed in severely affected pregnancies. Cut-off values with sufficient sensitivity and specificity to identify these foetuses could not be found. A previous obstetric history still remains the most useful predictive parameter for severe FMAIT in clinical practice.

100 Neonatal Disease Severity Scores and their Predictive Value 3For Early Mortality: A Population-Based Study on Subgroups of VLBW Infants

Background and aimsBenchmarking of newborn mortality needs risk-adjustment of data for heterogeneous sub-populations. To assess utility of neonatal disease severity scores CRIB, CRIB-II and PREM and impact of influenceable items...