Tracking national neonatal transport activity and metrics using the UK Neonatal Transport Group dataset 2012-2021: a narrative review.

There are no internationally agreed descriptors for categories of neonatal transports which facilitate comparisons between settings. To continually review and enhance neonatal transport care we need robust categories to develop benchmarks. This review aimed to report on the development and application of key measures across a national neonatal transport service. The UK Neonatal Transport Group (UK-NTG) developed a core dataset and benchmarks for transported infants and collected annual national data. Data were reported back to teams to allow benchmarking and improvements. From 2012 to 2021, the rate of UK neonatal transfers increased from 18 to 22/1000 live births despite a falling birth rate. Neonatal transfers on nitric oxide increased until 2016 before plateauing. The proportion of transport services able to provide high frequency oscillation and servo-controlled therapeutic hypothermia increased over the study period. High-flow nasal cannula oxygen use increased, becoming the most frequently used non-invasive respiratory support mode. For infants <27 weeks of gestational age, transfers for uplift of care in the first 3 days of life have fallen from 420 (2016) to 288 (2020/2021) and for lack of neonatal capacity from 24 (2016) to 2 (2020/2021). The rate of ventilated infants completing transfer with CO2 out of the benchmark range varied from 9% to 13% with marked variation between transport services' rates of hypocapnia (0-10%) and hypercapnia with acidosis (0-9%). The development of the UK-NTG dataset supports national tracking of activity and clinical trends allowing comparison of patient-focused benchmarks across teams.

Impact of Transfer for Surgical Management of Preterm Necrotising Enterocolitis or Focal Intestinal Perforation.

OBJECTIVE: To compare outcomes after surgically managed necrotising enterocolitis (NEC) and focal intestinal perforation (FIP) in infants <32 weeks requiring transfer to or presenting in a single surgical centre. DESIGN: Retrospective review of transferred and inborn NEC or FIP, from January 2013 to December 2020. PATIENTS: 107 transfers with possible NEC or FIP contributed 92 cases (final diagnoses NEC (75) and FIP (17)); 113 inborn cases: NEC (84) and FIP (29). RESULTS: In infants with a final diagnosis of NEC, medical management after transfer was as common as when inborn (41% TC vs 54% p = 0.12). Unadjusted all-cause mortality was lower in inborn NEC (19% vs 27%) and FIP (10% vs 29%). In infants undergoing surgery unadjusted mortality attributable to NEC or FIP was lower if inborn (21% vs 41% NEC, 7% vs 24% FIP). In regression analysis of surgically treated infants, being transferred was associated with increased all-cause mortality (OR 2.55 (1.03-6.79)) and mortality attributable to NEC or FIP (OR 4.89 (1.80-14.97)). CONCLUSIONS: These data require replication, but if confirmed, suggest that focusing care for infants at highest risk of developing NEC or FIP in a NICU with on-site surgical expertise may improve outcomes.

Muscle Function, Body Composition, Insulin Sensitivity and Physical Activity in Adolescents Born Preterm: Impact of Gestation and Vitamin D Status.

Whilst several studies have explored adolescent metabolic and cognitive function after preterm birth, few have explored muscle function and physical activity. We set out to examine the relationship between gestational age and muscle metabolism in a cohort of adolescents who were born preterm. Participants were recruited from the Newcastle preterm birth growth study cohort. They did not have severe neurological disease and were not on daily medication. Participants underwent an assessment of oxidative muscle function using phosphorus magnetic resonance spectroscopy that included the half-time for recovery of equilibrium of phosphocreatine, τ½PCr. In addition, we measured key variables that might affect muscle function including physical activity levels determined by 3-day accelerometry, body composition using air displacement plethysmography, insulin sensitivity using the homeostatic model assessment/Matsuda index and serum vitamin D concentrations. 60 adolescents (35F) median age 15.6 years (range 12.1−18.8) with a median gestation of 31 weeks (range 24 to 34 weeks) underwent a single assessment. Males were more active and spent less time in sedentary mode. Time spent in light activity was associated with insulin sensitivity (IS) (Matsuda Index; p < 0.05) but there were no strong correlations between activity levels and gestational age. Greater fat mass, waist circumference and body mass index were all associated with lower IS. Gestational age was negatively associated with adjusted measures of oxidative muscle function (τ½PCr). In a stepwise multivariate linear regression model, gestational age at birth was the most significant predictor of oxidative muscle function (p = 0.005). Higher serum vitamin D levels were also associated with faster phosphocreatine recovery time (p = 0.045). Oxidative function in the skeletal muscle of adolescents born preterm is associated with gestational age and vitamin D concentrations. Our study suggests that being born preterm may have a long-term impact on muscle metabolism.

How does the BAPM Framework for Practice on Perinatal Management of Extreme Preterm Birth Before 27 Weeks of Gestation impact delivery of Newborn Life Support? A Resuscitation Council UK response.

In October 2019, the British Association of Perinatal Medicine (BAPM) published a Framework1 and associated infographic2 for 'Practice on Perinatal Management of Extreme Preterm Birth Before 27 Weeks of Gestation' This outlined an approach, based on data from the UK and abroad, to assist clinicians in decision-making relating to perinatal care at ≤26+6 weeks gestation. Many frontline providers of delivery room care of extremely preterm infants will have completed a Resuscitation Council UK (RCUK) Newborn Life Support or Advanced Resuscitation of the Newborn Infant course. This RCUK response to the BAPM Framework highlights how this might impact on their approach.

Neonatal palliative care: a practical checklist approach.

OBJECTIVES: Following publication of detailed national neonatal palliative care guidance, practical regional guidance, in the form of multidisciplinary 'checklists', was implemented aiming to improve the quality of neonatal palliative care. METHODS: Case note audit was used to examine the quality of locally delivered neonatal palliative care before and after regional guidance implementation. RESULTS: 27 patients were allocated to the 'before' cohort and 10 to the 'after' cohort. Introduction of the checklists was apparently associated with improvements in domains of pain relief and comfort care, monitoring, fluids and nutrition, completion of diagnostics, treatment ceiling decisions, resuscitation status and discussion with parents. Other support for parents was poorly adhered to. CONCLUSION: Regional guidance improved some aspects of palliative care delivery though other areas remained suboptimal. Other strategies, for example, consultation with paediatric palliative care services, need to be considered to further improve the quality of palliative care delivered to babies with life-limiting illnesses.

RSV: Immunoprophylaxis and non-invasive respiratory support in ex-preterms: A northern UK perspective.

Recent guidance has suggested that immunoprophylaxis with monoclonal antibody against respiratory syncytial virus (RSV) should be extended to ex-preterm infants who are moderate-to-late-preterm and discharged home during the RSV season. Noninvasive respiratory support (NIV) for infants with bronchiolitis is becoming widespread with little supporting evidence for efficacy over nonpressure support methods. We used multicentre prospective audit and service evaluation to evaluate whether extension of current practice in line with the guidance would provide a clinical or cost benefit, and whether NIV provides any benefits in the ex-preterm population. The prevalence of bronchiolitic illness requiring admission in our population was similar to other studies (2.5%). We found that the majority of ex-preterm infants with RSV positive bronchiolitis who required NIV did not meet the extended criteria for immunisation. Our data suggest that extending RSV prophylaxis as recommended would be unlikely to reduce numbers of infants requiring respiratory support for RSV. NIV use has been widely adopted (9% of 'bronchiolitic' admissions) in our region but the data do not support it as a useful adjunct for ex-preterms with RSV positive illness requiring respiratory support: it does not appear to reduce the need for subsequent formal ventilation. Our study does not support a case for change to more widespread, protocol driven immunisation for RSV. Further research is needed in a randomised, controlled setting to examine the use of NIV in bronchiolitis in a wider context.

Preterm birth and subsequent insulin sensitivity: a systematic review.

OBJECTIVE: The incidence of preterm birth is increasing worldwide. Evidence suggests that in later life these children are at increased risk of 'metabolic syndrome', which is itself associated with reduced insulin sensitivity (IS). We carried out a systematic review to examine whether preterm birth is associated with later changes in IS and whether a difference exists between those born small-for-gestational age (SGA) and appropriate-for-gestational age (AGA). METHODS: We used the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidance to structure our review with a priori data extraction criteria to answer the questions posed and then carried out our literature search. Only papers which included preterm infants in their study population and specifically assessed IS were included. Findings are reported by age group to enable change over the life course to be examined, even though the studies were mostly cross-sectional, observation studies. RESULTS: We identified and reviewed 26 suitable publications representing 20 separate cohorts, of which 16 had a term control group. The heterogeneity of the methods used to measure IS precluded meta-analysis. In infancy and early childhood there is a measurable association between IS and preterm birth. In later childhood and adulthood the strength of this association reduces, and current body composition becomes the variable most strongly associated with IS. CONCLUSIONS: There is an association between preterm birth and IS throughout the life course, but the data are conflicting and associations are likely to be affected by the heterogeneity of each study population and multiple confounding factors that may change over time. While the optimal nutritional strategy for preterm infants remains to be determined, standard public health guidance to avoid obesogenic lifestyle factors remains equally important to individuals born preterm.

Growth and metabolic outcome in adolescents born preterm (GROWMORE): follow-up protocol for the Newcastle Preterm Birth GRowth study (PTBGS).

BACKGROUND: Preterm infants represent up to 10% of births worldwide and have an increased risk of adverse metabolic outcomes in later life. Early life exposures are key factors in determining later health but current lifestyle factors such as diet and physical activity are also extremely important and provide an opportunity for targeted intervention. METHODS/DESIGN: This current study, GROWMORE, is the fourth phase of the Newcastle Preterm Birth Growth Study (PTBGS), which was formed from two randomised controlled trials of nutrition in early life in preterm (24-34 weeks gestation) and low birthweight infants. 247 infants were recruited prior to hospital discharge. Infant follow-up included detailed measures of growth, nutritional intake, morbidities and body composition (Dual X Ray Absorptiometry, DXA) along with demographic data until 2 years corrected age. Developmental assessment was performed at 18 months corrected age, and cognitive assessment at 9-10 years of age. Growth, body composition (DXA), blood pressure and metabolic function (insulin resistance and lipid profile) were assessed at 9-13 years of age, and samples obtained for epigenetic analysis. In GROWMORE, we will follow up a representative cohort using established techniques and novel metabolic biomarkers and correlate these with current lifestyle factors including physical activity and dietary intake. We will assess auxology, body composition (BODPOD), insulin resistance, daily activity levels using Actigraph software and use 31P and 1H magnetic resonance spectroscopy to assess mitochondrial function and intra-hepatic lipid content. DISCUSSION: The Newcastle PTBGS is a unique cohort of children born preterm in the late 1990's. The major strengths are the high level of detail of early nutritional and growth exposures, and the comprehensive assessment over time. This study aims to examine the associations between early life exposures in preterm infants and metabolic outcomes in adolescence, which represents an area of major translational importance.

How to use... alkaline phosphatase in neonatology.

Alkaline phosphatase (ALP) is regularly measured in clinical practice. Changes in serum levels are observed in a number of clinical conditions. In neonatology, it has been proposed as a useful marker for both a diagnosis and an indication of the severity of metabolic bone disease (MBD) in infants born preterm. Nutritional practices, aimed at reducing the occurrence or severity of MBD, have led to ALP being proposed as a stand-alone means of monitoring treatment. The current evidence does not support this use: ALP only achieves usefulness in a diagnostic and monitoring capacity when combined with other serum and imaging techniques.