1240 Transfusion-associated necrotising enterocolitis (TANEC) cases reported to the UK haemovigilance organisation 2011–2019

ObjectiveThe objective was to describe outcomes and investigate factors affecting prognosis at 1 year post intervention for infants with surgical necrotising enterocolitis (NEC).DesignUsing the British Association of Paediatric Surgeons Congenital Anomalies Surveillance System, we conducted a prospective, multicentre cohort study of every infant reported to require surgical intervention for NEC in the UK and Ireland between 1 March 2013 and 28 February 2014. Association of independent variables with 1-year mortality was investigated using multivariable logistic regression analysis.SettingAll 28 paediatric surgical centres in the UK and Ireland.PatientsInfants were eligible for inclusion if they were diagnosed with NEC and deemed to require surgical intervention, regardless of whether that intervention was delivered.OutcomesPrimary outcome was mortality within 1 year of the decision to intervene surgically.Results236 infants were included in the study. 208 (88%) infants had 1-year follow-up. 59 of the 203 infants with known survival status (29%, 95% CI 23% to 36%) died within 1 year of the decision to intervene surgically. Following adjustment, key factors associated with reduced 1-year mortality included older gestational age at birth (adjusted OR (aOR) 0.87, 95% CI 0.78 to 0.96). Being small for gestational age (SGA) (aOR 3.6, 95% CI 1.4 to 9.5) and requiring parenteral nutrition at 28 days post-decision to intervene surgically (aOR 3.5, 95% CI 1.1 to 11.03) were associated with increased 1-year mortality.ConclusionsParents of infants undergoing surgery for NEC should be counselled that there is approximately a 1:3 risk of death in the first post-operative year but that the risk is lower for infants who are of greater gestational age at birth, who are not SGA and who do not require parenteral nutrition at 28 days post-intervention.

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A UK wide cohort study describing management and outcomes for infants with surgical Necrotising Enterocolitis

Scientific Reports ◽

10.1038/srep41149 ◽

2017 ◽

Vol 7 (1) ◽

Cited By ~ 9

Author(s):

Benjamin Allin ◽

◽

Anna-May Long ◽

Amit Gupta ◽

Marian Knight ◽

...

Keyword(s):

Congenital Anomaly ◽

Cohort Study ◽

Parenteral Nutrition ◽

Royal College ◽

Intestinal Perforation ◽

Primary Outcome ◽

Surgical Intervention ◽

Necrotising Enterocolitis ◽

Secondary Outcomes ◽

The Uk

Abstract The Royal College of Surgeons have proposed using outcomes from necrotising enterocolitis (NEC) surgery for revalidation of neonatal surgeons. The aim of this study was therefore to calculate the number of infants in the UK/Ireland with surgical NEC and describe outcomes that could be used for national benchmarking and counselling of parents. A prospective nationwide cohort study of every infant requiring surgical intervention for NEC in the UK was conducted between 01/03/13 and 28/02/14. Primary outcome was mortality at 28-days. Secondary outcomes included discharge, post-operative complication, and TPN requirement. 236 infants were included, 43(18%) of whom died, and eight(3%) of whom were discharged prior to 28-days post decision to intervene surgically. Sixty infants who underwent laparotomy (27%) experienced a complication, and 67(35%) of those who were alive at 28 days were parenteral nutrition free. Following multi-variable modelling, presence of a non-cardiac congenital anomaly (aOR 5.17, 95% CI 1.9–14.1), abdominal wall erythema or discolouration at presentation (aOR 2.51, 95% CI 1.23–5.1), diagnosis of single intestinal perforation at laparotomy (aOR 3.1 95% CI 1.05–9.3), and necessity to perform a clip and drop procedure (aOR 30, 95% CI 3.9–237) were associated with increased 28-day mortality. These results can be used for national benchmarking and counselling of parents.

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Dissemination and pathogenesis of toxigenic Clostridium perfringens strains linked to neonatal intensive care units and Necrotising Enterocolitis

10.1101/2021.08.03.454877 ◽

2021 ◽

Author(s):

Raymond Kiu ◽

Alex Shaw ◽

Kathleen Sim ◽

Harley Bedwell ◽

Emma Cornwell ◽

...

Keyword(s):

Clostridium Perfringens ◽

Neonatal Intensive Care ◽

Bacterial Pathogen ◽

Necrotising Enterocolitis ◽

Neonatal Intensive Care Units ◽

Infection Model ◽

Mouse Infection Model ◽

Infant Gut Microbiome ◽

The Uk

Background: Clostridium perfringens is an anaerobic toxin-producing bacterium that has long been associated with intestinal diseases, particularly in neonatal humans and animals. More recently, infant gut microbiome studies have suggested an important link between C. perfringens and the devastating preterm-associated disease Necrotising Enterocolitis (NEC), but in-depth studies on this pathogen (genomics and mechanistic) are lacking. Methods/Materials: We isolated and whole-genome sequenced 274 infant-associated C. perfringens isolates from 5 hospitals across the UK between 2011-2016 (including longitudinal samples from 31 individuals). We performed in-depth genomic analyses, phenotypically characterised pathogenic traits of 10 strains (including 4 C. perfringens from NEC patients) and established a novel oral-challenge C57BL/6 mouse infection model for microbe-host studies. Results: Pore-forming toxin encoding genes pfoA and cpb2 were enriched within hypervirulent lineages that exclusively consisted of C. perfringens-associated NEC (CPA-NEC) strains, in addition to overabundance of colonisation factors. Importantly, we identified a circulating C. perfringens variant, eventually linked to a fatal CPA-NEC case. The variant was detected consistently within 6 individuals in two sister hospitals across a 40-day window, demonstrating for the first time the intra- and inter-hospital dissemination of C. perfringens. CPA-NEC isolates were determined phenotypically to be more virulent (linked with overabundance of gene pfoA) than isolates obtained from non-NEC preterm babies. In addition, two pfoA-positive CPA-NEC C. perfringens strains were confirmed to induce clinical inflammatory tissue lesions in vivo. Conclusions: Hypervirulent lineages are linked to CPA-NEC, potentially due to the production of pore-forming toxins, coupled with higher metabolic, transmission, and pathogenic capacities. These studies indicate C. perfringens is an important bacterial pathogen in preterm infants and highlights the requirement for further investigation into development of intervention and therapeutic strategies.

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Necrotising enterocolitis, late-onset sepsis and mortality after routine probiotic introduction in the UK

Archives of Disease in Childhood - Fetal and Neonatal Edition ◽

10.1136/archdischild-2021-322252 ◽

2021 ◽

pp. fetalneonatal-2021-322252

Author(s):

Claire Granger ◽

Elda Dermyshi ◽

Eve Roberts ◽

Lauren C Beck ◽

Nicholas Embleton ◽

...

Keyword(s):

Birth Weight ◽

Low Birthweight ◽

Late Onset ◽

Necrotising Enterocolitis ◽

Late Onset Sepsis ◽

Antenatal Steroid ◽

Before And After ◽

Focal Intestinal Perforation ◽

The Uk ◽

Extremely Low Birthweight

ObjectiveTo compare necrotising enterocolitis (NEC), late-onset sepsis (LOS), focal intestinal perforation (FIP) and mortality in infants from a single neonatal unit before and after probiotic introduction.DesignRetrospective review of infants <32 weeks admitted January 2009–December 2012 (no probiotic) and January 2013–December 2017 (routine probiotics). Infants included were admitted before day 3, and not transferred out before day 3. NEC, LOS and FIP were defined with standard definitions.Patients1061 infants were included, 509 preprobiotic and 552 postprobiotic. Median gestation, birth weight and antenatal steroid use did not differ, and proportions of extremely low birthweight infants were similar (37% and 41%).ResultsOverall unadjusted risk of NEC (9.2% (95% CI 7.1 to 12.1) vs 10.6% (95% CI 8.2 to 13.4), p=0.48), LOS (16.3% (95% CI 13.2 to 19.6) vs 14.1% (95% CI 11.5 to 17.4), p=0.37) and mortality (9.2% (95% CI 7.1 to 12.1) vs 9.7% (95% CI 7.6 to 12.6), p=0.76) did not differ, nor proportion of surgical NEC. In multiple logistic regression, accounting for gestation, birth weight, antenatal steroid, maternal milk, chorioamnionitis and sex, probiotic receipt was not significantly associated with NEC (adjusted OR (aOR) 1.08 (95% CI 0.71 to 1.68), p=0.73), LOS or mortality. In subgroup (645 infants) >28 weeks, aOR for NEC in the probiotic cohort was 0.42 (95% CI 0.2 to 0.99, p=0.047). FIP was more common in the probiotic cohort (OR 2.3 (95% CI 1.0 to 5.4), p=0.04), not significant in regression analysis (2.11 (95% CI 0.97 to 4.95), p=0.05).ConclusionsProbiotic use in this centre did not reduce overall mortality or rates of NEC, LOS or FIP but subgroup analysis identified NEC risk reduction in infants >28 weeks, and LOS reduction <28 weeks.

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