Gender disparities in preterm neonatal outcomes

Aim

From birth to old age, males generally have poorer disease outcomes compared to females. Preterm infants display a marked gender disparity in disease outcomes, and the underlying mechanisms are not well delineated. Our aim was to review the literature on clinical outcomes between preterm infants of different genders and discuss the potential mechanisms underlying the differences observed.

Methods

A literature review was undertaken for experimental and clinical research related to gender differences in preterm outcomes.

Results

Preterm male infants appear to have consistently worse outcomes compared to females, and the aetiology of these differences, while mostly undetermined, is likely multifactorial.

Conclusion

The male disadvantage in preterm outcomes is likely multifactorial with hormonal, genetic and immunological differences likely playing key roles. Gender is an important variable in preterm outcome and should be considered when designing clinical and experimental research.

     

Unexpected collapse of healthy newborn infants: risk factors,supervision and hypothermia treatment

Aim

To determine the occurrence and risk factors of sudden unexpected postnatal collapse (SUPC) in presumably healthy newborn infants.

Methods

All live‐born infants during a 30‐month period, in five major delivery wards in Stockholm, were screened, and possible cases of SUPC thoroughly investigated. Infants were ≥35 weeks of gestation, had an Apgar score >8 at 10 min and collapsed within 24 h after birth. Maternal, infant, event characteristics and outcome data were collected.

Results

Twenty‐six cases of SUPC were found among 68 364 live‐born infants, an incidence of 38/100 000 live births. Sixteen of these cases of SUPC required resuscitation with ventilation >1 min, and 14 of these remained unexplained (21/100 000). Fifteen of the 26 children were found in a prone position, during skin‐to‐skin contact, 18 were primipara, and 13 occurred during unsupervised breastfeeding at <2 h of age. Three cases occurred during smart cellular phone use by the mother. Five developed hypoxic–ischaemic encephalopathy (HIE) grade 2, and 4 underwent hypothermia treatment. Twenty‐five infants had a favourable neurological outcome.

Conclusion

SUPC in apparent healthy babies is associated with initial, unsupervised breastfeeding, prone position, primiparity and distractions. Guidelines outlining the appropriate monitoring of newborns and safe early skin‐to‐skin contact should be implemented.

     

Observation study showed that the continuity of skin‐to‐skin contact with low‐birthweight infants in Uganda was suboptimal

Aim

Kangaroo mother care (KMC) is a safe and effective method of reducing neonatal mortality in resource‐limited settings, but there has been a lack of data on the duration of skin‐to‐skin contact (SSC) in busy, low‐resource newborn units. Previous studies of intermittent KMC suggest the duration of SSC ranged from 10 minutes to 17 hours per day.

Methods

This was an observational study of newborn infants born weighing less than 2000 g, which collected quantitative data on SSC over the first week after birth. The study took place in July 2016 in the newborn unit of a low‐resource facility in Uganda.

Results

The mean daily duration of SSC over the first week after birth was three hours. This differed significantly from the World Health Organization recommendation of at least 20 hours of SSC per day. SSC was provided by mothers most of the time (73.5%), but other family members also took part, especially on the day of birth.

Conclusion

Our study found a disappointingly low daily duration of SSC in this Ugandan newborn unit. However, advocacy and community education of SSC may help to decrease the stigma of KMC, improve overall acceptance and reduce the age at SSC initiation.

     

Detection of gastro‐oesophageal reflux in the neonatal unit

Aim

To determine whether a pH probe or multichannel intraluminal impedance (MII) more frequently detected gastro‐oesophageal reflux and test the hypothesis that acid reflux was associated with lower baseline impedance.

Methods

A prospective study of infants in whom reflux was suspected and evaluated using combined pH and multichannel impedance. Studies were considered abnormal if the acid index was >10% or there were >79MII reflux events in 24 hours. The acid index was the percentage of total study time with a pH

Results

Forty‐two infants [median gestational age 31 (range 23–42) weeks] were assessed. Only nine infants (21%) had abnormal studies, seven detected by pH monitoring, one by MII monitoring and one by both techniques (p = 0.04). After correcting for gestational age and post‐natal age, baseline impedance remained negatively correlated with the acid index (r = ?0.34, p = 0.038) and the maximum ACT (r = ?0.44, p = 0.006).

Conclusion

Clinical suspicion of reflux was frequently incorrect, and reflux was more frequently detected by a pH probe. The inverse relationship of acid reflux to baseline impedance suggests that mucosal disruption may result from acid reflux in this population.

     

Vitamin D deficiency at the Arctic Circle – a study in food‐allergic adolescents and controls

Aim

At the extremes of latitude, UVB intensity is insufficient for adequate vitamin D synthesis in winter. Fatty fish, vitamin D enriched milk, margarine and eggs are main dietary sources of vitamin D. Their elimination may increase the risk of vitamin D deficiency. The aim was to assess vitamin D status in food‐allergic adolescents eliminating milk, egg and/or fish compared with adolescents on normal diets.

Methods

In winter, vitamin D intake was assessed by a food frequency questionnaire in 20 food‐allergic adolescents and 42 controls in the population‐based Obstructive Lung Disease In Northern Sweden (OLIN) cohort studies. Vitamin D supplementation was queried. Serum 25‐hydroxyvitamin D [S‐25(OH)D] and S‐parathormone (S‐PTH) levels were determined.

Results

Mean (SD) dietary vitamin D intake was 7.9 (3.6) μg/day in allergic adolescents and 7.8 (3.4) in controls (p > 0.05). Mean (SD) S‐25(OH)D levels in supplement consumers were 44 (18) nmol/L compared with 35 (10) in non‐consumers (p = 0.03). S‐25(OH)D and S‐PTH levels were similar in food‐allergic adolescents and controls (p > 0.05). Eighty‐two percentage had deficient S‐25(OH)D levels <50 nmol/L, and none reached levels >75 nmol/L.

Conclusion

Vitamin D deficiency was as common in food‐allergic adolescents as in controls although the vitamin D intake met national recommendations. Large‐scale studies on the prevalence of vitamin D deficiency in this region are needed.

     

Nutritional therapy complications in children with ultra‐short bowel syndrome include growth deficiency but not cholestasis

Aim

Children with ultra‐short bowel syndrome (USBS) have not been extensively studied to date because the condition is rare. The aim of the study was to assess the nutritional status of children with USBS receiving home parenteral nutrition, using citrulline serum concentration and cholestasis.

Methods

We studied 17 patients with USBS, with a median age of 6.6 years and median duration of parenteral nutrition of 6.6 years. The study was carried out at The Children's Memorial Health Institute, Warsaw, from January 2014 to January 2015.

Results

The median standard deviation score (SDS) was ?1.2 for body mass according to chronological age, ?1.72 according to height and ?0.59 according to height for age. Patients requiring seven days per week parenteral nutrition had a citrulline concentration below 10 μmol/L. Decreased bone‐mineral density was observed in 87% of the patients. Low values of 25‐hydroxyvitamin D were found in 53% of the children. None of the patients had elevated conjugated bilirubin levels above 34.2 μmol/L.

Conclusion

Children with USBS were growth deficient according to their chronological age, with frequent abnormal bone mineralisation and vitamin D deficiency. Children requiring parenteral nutrition seven days a week had citrulline concentrations below 10 μmol/L. Cholestasis was not seen.

     

Review shows that parental reassurance and nutritional advice help to optimise the management of functional gastrointestinal disorders in infants

Aim

Regurgitation, infantile colic and functional constipation are common functional gastrointestinal disorders (FGIDs) during infancy. Our aim was to carry out a concise review of the literature, evaluate the impact of these common FGIDs on infants and their families, and provide an overview of national and international guidelines and peer‐reviewed expert recommendations on their management.

Methods

National and international guidelines and peer‐reviewed expert recommendations on the management of regurgitation, infantile colic and functional constipation were examined and summarised.

Results

Regurgitation, infantile colic and functional constipation cause frequent parental concerns, lead to heavy personal and economic costs for families and impose a financial burden on public healthcare systems. Guidelines emphasise that the first‐line management of these common FGIDs should focus on parental education, reassurance and nutritional advice. Nutritional advice should stress the benefits of continuing breastfeeding, while special infant formulas may be considered for non‐breastfed infants with common FGIDs. Drug treatment is seldom required, with the exception of functional constipation.

Conclusion

By providing complete and updated parental education, reassurance and nutritional advice, healthcare professionals can optimise the management of FGIDs and related symptoms and reduce the inappropriate use of medication or dietary interventions.

     

Perspectives on periviability counselling and decision‐making differed between neonatologists in the United States and the Netherlands

Aim

American guidelines suggest that neonatal resuscitation be considered at 23 weeks of gestation, one week earlier than in the Netherlands, but how counselling practices differ at the threshold of viability is unknown. This pilot study compared prenatal periviability counselling in the two countries.

Methods

In 2013, a cross‐sectional survey was sent to 121 Dutch neonatologists as part of a nationwide evaluation of prenatal counselling. In this pilot study, the same survey was sent to a convenience sample of 31 American neonatologists in 2014. The results were used to compare the organisation, content and decision‐making processes in prenatal counselling at 24 weeks of gestation between the two countries.

Results

The survey was completed by 17 (55%) American and 77 (64%) Dutch neonatologists. American neonatologists preferred to meet with parents more frequently, for longer periods of time, and to discuss more intensive care topics, including long‐term complications, than Dutch neonatologists. Neonatologists from both countries preferred shared decision‐making when deciding whether to initiate intensive care.

Conclusion

Neonatologists in the United States and the Netherlands differed in their approach to prenatal counselling at 24 weeks of gestation. Cross‐cultural differences may play a role.

     

Accurate and fast neonatal heart rate assessment with a smartphone‐based application – a manikin study

Aim

This study determined the accuracy and speed of the NeoTapLifeSupport (NeoTapLS), a free smartphone application that aims to assess a neonate's heart rate.

Methods

We asked 30 participants with a variety of backgrounds to test the NeoTapLS, which was developed by our own nonprofit organisation Tap4Life, to determine a randomly selected heart rate by auscultation or palpation. The study was carried out in 2014 at Sachs’ Children and Youth Hospital, Sweden, using a Laerdal SimNewB manikin that simulates true values. The NeoTapLS calculates the heart rate based on the user's last three taps on the smartphone screen.

Results

A total of 1200 measurements were carried out. A high correlation was found between measured and true values by auscultation (correlation coefficient 0.993) as well as by palpation (correlation coefficient 0.986) with 93.5% of the auscultations and 86.3% of the palpations differing from the true value by five beats or fewer. The mean time to the first estimated heart rate was 14.9 seconds for auscultation and 16.3 seconds for palpation.

Conclusion

Heart rates could be accurately and rapidly assessed using the NeoTapLS on a manikin. A globally accessible mobile health system could offer a low‐cost alternative to expensive medical equipment.

     

Virus detection in critically ill children with acute respiratory disease: a new profile in view of new technology

Aim

To describe the epidemiology of critically ill children admitted to a paediatric intensive care unit (PICU) with acute respiratory disease. The association with intubation was analysed for the three most prevalent viruses and in those with and without viral co‐infection.

Methods

Patients admitted to the PICU (2004–2014) with acute respiratory disease were included. Analyses were performed utilising each respiratory viral infection or multiple viral infections as an exposure.

Results

There were 1766 admissions with acute respiratory disease of which 1372 had respiratory virus testing and 748 had one or more viruses detected. The risk of intubation before or during the PICU stay was higher if parainfluenza virus was detected compared to respiratory syncytial virus (RSV) (OR: 2.20; 95% CI: 1.06–4.56). Sixty‐three admissions had two or more viruses detected, and the combination of RSV and Rhinovirus/enterovirus was the most common. No significant difference was observed in the risk of intubation between patients with multiple and single viral infections.

Conclusion

Higher risk of intubation was found in patients with parainfluenza as compared to RSV. The risk of intubation comparing parainfluenza virus to other viruses and for patients with multiple versus single virus needs to be further studied.

     

Review shows that Icelandic society is taking firmer steps to tackle the diverse forms of child abuse and neglect that its children are exposed to

Aim

This review examined and summarised the research published on child abuse in Iceland, which was mainly in the country's native language, to make the findings more accessible to English speakers. It specifically focused on child rearing and the physical, emotional and sexual abuse, neglect and intrafamilial conflicts suffered by children at the hands of their parents and other carers.

Method

The review drew on published research, books and reports and compared the findings with Nordic research and global estimates of child abuse.

Results

Qualitative and quantitative research revealed that the prevalence of different forms of child abuse, child neglect and intra‐familial conflicts in Iceland was similar to, or higher than, global and Nordic estimates. Younger respondents reported less physical abuse than older respondents, but higher levels of emotional abuse. Legislation, greater awareness, public debates and research on child abuse in Iceland have contributed to the growing recognition of the negative consequences of child abuse and strengthened support for prevention strategies.

Conclusion

Icelandic children have reportedly experienced diverse forms of child abuse and neglect from their parents and other carers. Diverse initiatives have been put in place that underline the urgent need to tackle such behaviour.

     

Aetiology of neonatal conjunctivitis evaluated in a population‐based setting

Aim

Our aim was to study prospectively the aetiology of neonatal conjunctivitis in a population‐based setting.

Methods

Altogether 173 neonates with clinical conjunctivitis aged on average 20 (SD 10) days were recruited from child welfare clinics in Oulu, Finland, in 2010–2015. Conjunctival specimens were collected from 167 neonates for multiplex polymerase chain reaction to detect 16 respiratory viruses, from 163 for polymerase chain reaction to detect Chlamydia trachomatis and Neisseria gonorrhoeae and from 160 for bacterial culture studies. The cases were followed up until the age of 18 months.

Results

Viral conjunctivitis was diagnosed in 8/167 (4.8%; 95% CI 2.1–9.2%), chlamydial or gonococcal conjunctivitis in 0/163 cases (0%; 95% CI 0–2.2%) and other bacterial conjunctivitis in 58/160 (36%; 95% CI 29–44%). Rhinovirus was found at the ocular site in 4/167 (2.4%) neonates, adenovirus in 3/167 (1.8%) and bocavirus in 1/167 (0.6%). The most commonly isolated bacteria included Staphylococcus aureus (16%), Moraxella catarrhalis (9.4%) and Streptococcus pneumoniae (3.1%). None of these pathogens was associated with the 4/173 (2.3%) cases later operated on for persistent nasolacrimal duct obstruction.

Conclusion

Chlamydia trachomatis was a rare pathogen in neonatal conjunctivitis in a population‐based setting, but respiratory viruses were detected more frequently than indicated earlier.

     

Eight-year-old very and extremely preterm children showed more difficulties in performance intelligence than verbal intelligence

Aim

This study determined possible discrepancies between verbal IQ and performance IQ in 8-year-old very preterm (VPT) and extremely preterm (EPT) children, and examined associations between verbal IQ and performance IQ, and sociodemographic factors, perinatal factors, early cognitive outcomes and also with school achievement scores.

Methods

This prospective cohort study included 120 eight-year-old VPT/EPT children. Cognitive development was assessed at the ages of 2, 5 and 8 years. Eight years’ school achievement results in arithmetic, reading and spelling were collected. Multiple regression analyses were performed to determine predictors of verbal IQ and performance IQ at the age of 8 years and to determine associations with school achievement scores.

Results

Mean performance IQ (89.8) was significantly lower than mean verbal IQ (99.4; Cohen's d = 0.59) at the age of 8 years. Gestational age (GA), small for GA status, and cognitive scores at the ages of 2 and 5 years significantly predicted verbal IQ and performance IQ at the age of 8 years. Performance IQ at age 8 years was an important predictor for arithmetic scores (β = 0.42).

Conclusion

Performance IQ was more strongly affected than verbal IQ in 8-year-old VPT/EPT children and was strongly related to mathematical difficulties.

     

Comparative study of preterm infants fed new and existing human milk fortifiers showed favourable markers of gastrointestinal status

Aim

This study examined the influence of different human milk fortifiers on biomarkers of gastrointestinal immaturity and inflammation in preterm infants.

Methods

We report secondary outcomes from a controlled, double-blind, randomised, parallel group study conducted from 2011 to 2014 in neonatal intensive care units at 11 metropolitan hospitals in France, Belgium, Germany, Switzerland and Italy. Preterm infants born at up to 32 weeks or weighing up to 1500 g were randomised to a new powdered human milk fortifier (n = 77) or a control fortifier (n = 76) for a minimum of 21 days. We analysed faecal markers of gut inflammation, namely alpha-1 antitrypsin and calprotectin, and maturity, namely elastase-1.

Results

Faecal alpha-1 antitrypsin was slightly lower in the new than control fortifier group after 21 days of full enteral feeding, with a geometric mean and standard deviation of 1.52 ± 1.32 vs 1.82 ± 1.44 mg/g stools (P = .01). There was no significant difference in faecal calprotectin (median [Q1-Q3] of 296 [136-565] μg/g stools in both groups combined at study day 21). Faecal elastase-1 was lower in the new fortifier than control fortifier group (202.5 ± 1.6 vs 257.7 ± 1.5 μg/g stools, P = .016).

Conclusion

Mean values for each parameter were within the ranges in healthy term infants, indicating favourable markers of gastrointestinal status in both groups. In addition, for faecal calprotectin, the relatively high concentration observed in preterm infants fed fortified human milk suggests that the threshold level for detecting necrotising enterocolitis should be revised.

     

Predicting respiratory distress syndrome at birth using a fast test based on spectroscopy of gastric aspirates: 2. Clinical part

Aim

To evaluate the accuracy of our new rapid point-of-care (POC) test for lung maturity. The method as we describe in an accompanying article was developed with the purpose of improving the outcome from respiratory distress syndrome (RDS). The test enables the delivery of surfactant in infants with immature lungs already at birth and ensures that infants with mature lungs are not treated unnecessarily.

Methods

Fresh gastric aspirate (GAS) was sampled at birth in a cohort of preterm infants with gestational ages ranging between 24 and 31 completed weeks for lung surfactant measurement as lecithin–sphingomyelin ratio (L/S). L/S was prospectively compared with RDS development. The clinical outcome was blinded for the investigators of L/S. The time for analysis was <15 minutes.

Results

GAS was obtained from 72 infants. Forty-four (61%) developed RDS. The cut-off for L/S was 3.05; predicting RDS with a sensitivity of 91% and specificity of 79%.

Conclusion

The new improved spectroscopic L/S method of lung maturity on GAS has high sensitivity. The method is designed for use as a POC test at birth, and a spectroscopic prototype has been developed for bedside use. Clinical trials with this new lung maturity test are planned.

     

Three times as much physical education reduced the risk of children being overweight or obese after 5 years

Aim

We evaluated the effect that increasing physical education lessons from 1.5 to 4.5 hours per week for 5 years had on the body mass index (BMI) and waist circumferences of children aged 5-11 years at inclusion.

Methods

From 2008 to 2013, six intervention schools in Svendborg, Denmark, delivered 4.5 hours of physical education lessons per week to 750 children. Meanwhile, four matched control schools gave 549 children the standard 1.5 hours of physical education lessons per week. Measurements were taken at baseline and yearly for 5 years. Of the 1299 children, 81 joined the schools after 2008.

Results

At baseline, the percentage of overweight children was 12% in the intervention schools and 13% in the control schools, whereas 15% and 19% were abdominal obese, respectively. After 5 years, the respective risks of remaining abdominal obese or overweight were 43% and 51% in the intervention schools and 78% and 84% in the control schools. Mean BMI increased 0.450 kg/m² more in the control group over the five-year period. The intervention was not effective in decreasing the average waist circumference.

Conclusion

Three times as much physical education lessons per week, for 5 years, effectively decreased BMI and the likelihood of remaining overweight or obese.

     

Quality of life in children with retinoblastoma after enucleation in China

Objective

To study the quality of life of Chinese pediatric patients with retinoblastoma (RB) after enucleation and the influencing factors.

Methods

A questionnaire survey was performed on 71 cases of pediatric patients with RB after enucleation and 80 cases of healthy children, using the Pediatric Quality of Life Inventory 4.0 Generic Core Scales (PedsQL? 4.0).

Results

The social dimension scores, school dimension scores, and total scores for the PedsQL? 4.0 among the pediatric patients with RB were statistically significantly lower than those of healthy children. The influencing factors were unilateral/bilateral affected eyes, diagnosis age, and ocular prosthesis satisfaction.

Conclusion

Early discovery, timely treatment, increased eye salvage rate, and cosmetic effects of ocular prosthesis were key factors for increasing the quality of life of pediatric patients with RB. Attention should be paid to the health, social, and school development of pediatric patients with RB.

     

Possible effect of maternal safe food preparation behavior on child malnutrition in Benin,Africa

Background

In many developing countries, faulty complementary feeding practises and frequently contaminated foods are contributing factors to child malnutrition. The aims of this study were to evaluate the nutrition status of, and clarify the maternal safe food preparation behaviors associated with malnutrition in, children aged <5 years in Cotonou, Benin.

Methods

This study targeted 300 mother–child pairs visiting the University Hospital of Mother and Child Cotonou Lagoon. Mothers were interviewed using a structured questionnaire. Child height/length and weight measurements were determined and Z ‐scores were calculated using the 2006 World Health Organization Child Growth Standards. Children with Z ‐score < ?2 were considered to have stunting or be underweight. On logistic regression analysis, significant variables on bivariate analysis, the associations of which were clarified in previous studies, were established as independent variables. Approximately 80% of the children who participated in this study were aged < 1 year. Being underweight was analyzed as a dependent variable.

Results

Regarding nutrition status, 11.0% of the children had stunting and 14.7% were underweight. On logistic regression analysis, underweight was correlated significantly with birthweight. As a remarkable point, food refrigeration was statistically significant. Food refrigeration can possibly be regarded as a maternal safe food preparation behavior.

Conclusions

Maternal safe food preparation behaviors can prevent child malnutrition, even after considering biological and socioeconomic factors.

     

Prevailing head position to one side in early infancy—A population-based study

Aim

To determine the prevalence of prevailing head position to one side (PHP) in young infants and to evaluate its associations with reaching performance, neurological condition and perinatal and socio-economic factors.

Methods

Observational study in 500 infants (273 boys) 2-6 months corrected age, representative of the Dutch population (median gestational age 39.7 weeks (27-42); birthweight 3438 g (1120-4950). Prevailing head position to one side and reaching performance were assessed with the Infant Motor Profile; neurological condition with the Standardized Infant NeuroDevelopmental Assessment. Socio-economic information and perinatal information were obtained by questionnaire and medical records. Associations were analysed with uni- and multivariable statistics.

Results

Prevailing head position to one side was observed in 100 infants (20%), and its prevalence decreased from 49% at 2 months to 0% at 6 months. Only in infants aged 4-5 months PHP was significantly associated with worse reaching and an at-risk neurological score. Prevailing head position to one side was weakly associated with prenatal substance exposure, post-natal admission to a paediatric ward and paternal native Dutch background.

Conclusion

Prevailing head position to one side at 2-3 months is a frequently occurring sign with limited clinical significance. Yet, PHP at 4-5 months is associated with a worse functional and neurological condition. Therefore, PHP at 4-5 months could serve as a red flag indicating possible challenges in later development.