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Highlights from this issue  |
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It all depends where you disembark Whimsical metaphor? Not intentionally. In the context of this (or any other month’s issue), the role of the column in guiding a reader to a station of disembarkation/paper is very important. This month’s issue is very strong on global health, endocrinology and infectious disease. None of the excellent papers I describe are difficult conceptually, all are practical and each rewarded reading. I know you will enjoy them too. New WHO initiatives Last month after both extensive and intensive consultations, WHO released a new set of standards aimed at improving child and adolescent health. These are centred on eight key areas, and though clinical aspects form one spoke, they take us a step beyond standard practice guidance in that central tenets are child and parent appropriateness, quality improvement and the psychological and environmental aspects of illness. Like the Millennium and Sustainable... |
New WHO standards for improving the quality of healthcare for children and adolescents  |
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In the last 25 years there has been an increasing recognition of the importance of quality of health services as a public health issue.1 2 Quality in healthcare is now represented in national policies, and demanded by health boards and consumers alike. The drive for quality began with the recognition that hospital-acquired adverse events were frequent, costly and often deadly in high-income countries. Since 2000, in many low-income and middle-income countries, assessments have shown that there was much scope for improving quality in many aspects of paediatric care, especially in district-level and provincial-level hospitals, and experience has grown in how to do this.3–12 Many populations and environments have seen little of the quality of healthcare revolution. This is especially the case in health facilities in... |
Graves disease. Time to move on  |
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Graves’ disease remains a challenge for a young person, their family and the healthcare team. There have been no new treatment options for the newly presenting patient for over 55 years1 and the reality is that most young people will ultimately become adults who take long-term thyroid hormone replacement. This is because most young people will relapse after a course of antithyroid drug (ATD)—irrespective of whether this is of 2, 4 or 6 years’ duration. Patients who relapse and who do not want to return to ATD treatment have no option but to undergo definitive thyroid gland surgical removal or destruction by radioiodine. A small minority of patients will develop potentially dangerous early side effects of ATD and are forced in the direction of surgery or radioiodine sooner rather than later. The most notable of these side effects is agranulocytosis which resolves when the ATD is stopped. Thyroid hormone replacement... |
Effective screening leads to better outcomes in sickle cell disease  |
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The importance of newborn screening for sickle haemoglobinopathies is now recognised, and its use has been expanding worldwide in recent years. This crucial blood test, often administered shortly after birth, can accurately diagnose sickle cell disease, allowing early interventions. As more countries adopt sickle cell screening programmes, it becomes essential to have periodic data assessments to determine overall effectiveness and identify areas for improvement. In this context, two timely reviews of the nationwide England programme have now been conducted. With the possible exception of childhood immunisations, newborn screening can be considered one of the most successful public health programmes ever developed for improving child health. Newborn screening provides the means for early detection of congenital diseases, typically through laboratory testing of blood collected soon after birth. Abnormal screening results should always be confirmed, and then followed by prompt intervention and early disease management, with the specific goal of preventing... |
Assessment and support of children and adolescents with gender dysphoria  |
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Introduction There has been a large increase in the number of children and adolescents who question conventional gender expectations and seek recognition and acceptance of their gender diversity, wishing to develop a body that is congruent with their gender feelings.1 Professionals may be unsure how best to provide supportive care, how to access the national Gender Identity Development Service (GIDS) for children and adolescents, or how to deal with a transgender young person presenting with another clinical problem unrelated to their gender transition. Faced with very distressed young people, they may feel under pressure to initiate physical intervention without consultation with psychosocial colleagues. It is important that all professionals are aware of the care pathway for transgender children that may be of relevance in a range of paediatric settings. The purpose of this practice review is to present an up-to-date perspective on the care of transgender children... |
Long-term outcome of thyrotoxicosis in childhood and adolescence in the west of Scotland: the case for long-term antithyroid treatment and the importance of initial counselling  |
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Background
Thyrotoxicosis is both rarer and more severe in children than in adults, rendering management difficult and often unsatisfactory.
Objective
To ascertain outcome in a geographically defined area of Scotland between 1989 and 2014.
Method
Retrospective case note review with follow-up questionnaire to family doctors for patients with Graves’ disease and Hashimoto’s thyroiditis.
Results
Sixty-six patients (58 females:8 males) comprising 53 with Graves’ disease and 13 with Hashimoto’s thyroiditis were diagnosed at median 10.4 (2.9–15.8) years and followed up for 11.8 (2.6–30.2) years. Antithyroid drug (ATD) therapy was stopped electively in 35 patients after 4.5 (1.5–8.6) years, resulting in remission in 10/13 Hashimoto’s thyroiditis and 10/22 Graves’ disease. Side effects occurred in 12 patients receiving carbimazole, six of whom changed to propylthiouracil; no adverse events occurred in the latter patients.
Second-line therapy was given to 37 patients (34 with Graves’ disease), comprising radioiodine (22) at 15.6 (9.3–24.4) years for relapse (6), poor control/adherence (14) or electively (2); and surgery (16) at 12 (6.4–21.3) years for relapse (4), poor control/adherence (5) and electively (7). Adherence problems with thyroxine replacement were reported in 10/33 patients in adulthood.
Conclusions
Hashimoto’s thyroiditis should be distinguished from Graves’ disease at diagnosis since the prognosis for remission is better. Remission rates for Graves’ disease are low (10/53 patients), time to remission variable and adherence with both ATD and thyroxine replacement often problematic. We recommend (a) the giving of long-term ATD rather than a fixed course of treatment in GD and (b) meticulous and realistic counselling of families from the time of diagnosis onwards.
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Risk of Invasive Pneumococcal Disease in Children with Sickle Cell Disease in England: A National Observational Cohort Study, 2010-2015  |
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Objective
To describe the clinical presentation, risk factors, serotype distribution and outcomes of invasive pneumococcal disease (IPD) in children with sickle cell disease (SCD) following the introduction of the 13-valent pneumococcal conjugate vaccine (PCV13) in the UK.
Design
Prospective national newborn screening for SCD and enhanced national IPD surveillance.
Participants
Children with SCD born in England between 1 September 2010 and 31 August 2014 who developed laboratory-confirmed IPD by 31 December 2015.
Main outcomes and measures
Risk of IPD in children with SCD compared with children without SCD during the surveillance period.
Results
Eleven children homozygote for haemoglobin S (HbSS) and one double heterozygote for haemoglobin S and C (HbSC) developed IPD. Septicaemia (n=7) and lower respiratory tract infection (n=4) were the main clinical presentations, and serogroup 15 (not present in PCV13) was responsible for 73% (8/11) of cases. Three children with HbSS (27%) died compared with <5% nationally. Children with HbSS had a 49-fold (95% CI 27 to 89, P<0.001) higher risk of IPD compared with their peers without SCD.
Conclusions
Children with SCD remain at increased risk of IPD despite national newborn screening, early penicillin prophylaxis and high pneumococcal vaccine uptake. They are also more likely to die of their infection compared with their peers without SCD. Most IPD cases are now due to serotypes not covered by PCV13. Healthcare professionals need to work more closely with families with SCD and local communities to emphasise the importance of penicillin prophylaxis, explore barriers, allay misguided beliefs and facilitate rapid access to healthcare.
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Evaluation of newborn sickle cell screening programme in England: 2010-2016  |
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Objective
To evaluate England’s NHS newborn sickle cell screening programme performance in children up to the age of 5 years.
Design
Cohort of resident infants with sickle cell disease (SCD) born between 1 September 2010 and 31 August 2015 and followed until August 2016.
Participants
1317 infants with SCD were notified to the study from all centres in England and 1313 (99%) were followed up.
Interventions
Early enrolment in clinical follow-up, parental education and routine penicillin prophylaxis.
Main outcome measures
Age seen by a specialist clinician, age at prescription of penicillin prophylaxis and mortality.
Results
All but two resident cases of SCD were identified through screening; one baby was enrolled in care after prenatal diagnosis; one baby whose parents refused newborn screening presented symptomatically. There were 1054/1313 (80.3%, 95% CI 78% to 82.4%) SCD cases seen by a specialist by 3 months of age and 1273/1313 (97%, 95% CI 95.9% to 97.8%) by 6 months. The percentage seen by 3 months increased from 77% in 2010 to 85.4% in 2015. 1038/1292 (80.3%, 95% CI 78.1% to 82.5%) were prescribed penicillin by 3 months of age and 1257/1292 (97.3%, 95% CI 96.3% to 98.1%) by 6 months. There were three SCD deaths <5 years caused by invasive pneumococcal disease (IPD) sensitive to penicillin.
Conclusion
The SCD screening programme is effective at detecting affected infants. Enrolment into specialist care is timely but below the programme standards. Mortality is reducing but adherence to antibiotic prophylaxis remains important for IPD serotypes not in the current vaccine schedule.
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Hypothermia for perinatal asphyxia: trial-based quality of life at 6-7 years  |
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Objective
To assess the impact of hypothermic neural rescue at birth on health-related quality of life (HRQL) in middle childhood.
Design
Six-year to 7-year follow-up of surviving children from the Total Body Hypothermia for Neonatal Encephalopathy (TOBY) Trial.
Setting
Community study including a single parental questionnaire to collect information on children’s HRQL.
Patients
145 children (70 in the control group, 75 in the hypothermia group) whose parents consented and returned the questionnaire.
Interventions
Intensive care with cooling of the body to 33.5°C for 72 hours or intensive care alone.
Main outcome measures
HRQL attributes and utility scores using the Health Utilities Index (HUI).
Results
At 6–7 years, speech appeared disproportionately affected when compared with other aspects of HRQL but levels of normal emotional functioning were similar in both groups. The mean (SE) HUI3 HRQL scores were 0.73 (0.05) in the hypothermia group and 0.62 (0.06) in the control group; mean difference (95% CI) 0.11 (–0.04 to 0.26).
Conclusions
Findings of non-significant differences were not unexpected; the study used data from long-term survivors in a neonatal trial and was underpowered. However, results favoured moderate hypothermia and so complement the clinical results of the TOBY Children study. The work provides further insight into the long-term HRQL impact of perinatal asphyxial encephalopathy and provides previously unavailable utility data with which to contemplate the longer term cost-effectiveness of hypothermic neural rescue.
Trial registration number
This study reports on the follow-up of the TOBY clinical trial: ClinicalTrials.gov number NCT01092637.
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Acid suppressants for managing gastro-oesophageal reflux and gastro-oesophageal reflux disease in infants: a national survey  |
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Objectives
To evaluate the diagnosis and management of reflux and gastro-oesophageal reflux disease (GORD) in infants aged <1 year presenting to general practitioners (GPs).
Design, setting and participants
A nationally representative, prospective, cross-sectional survey of GP activity in Australia, 2006–2016 (Bettering the Evaluation And Care of Health Study). Annually, a random sample of around 1000 GPs recorded details for 100 consecutive visits with consenting, unidentified patients.
Outcome measures
Diagnoses of reflux and GORD and their management including prescribing of acid-suppressant medicines (proton pump inhibitors (PPIs) and histamine receptor antagonists (H2RAs)) and counselling, advice or education.
Results
Of all infants’ visits, 512 (2.7%) included a diagnosis of reflux (n=413, 2.2%) or GORD (n=99, 0.5%). From 2006 to 2016, diagnostic rates decreased for reflux and increased for GORD. Prescribing of acid suppressants occurred in 43.6% visits for reflux and 48.5% visits for GORD, similar to rates of counselling, advice or education (reflux: 38.5%, GORD: 43.4% of visits). Prescribing of PPIs increased (statistically significant only for visits for reflux), while prescribing of H2RAs decreased.
Conclusions
Overprescribing of acid suppressants to infants may be occurring. In infants, acid-suppressant medicines are no better than placebo and may have significant negative side effects; however, guidelines are inconsistent. Clear, concise and consistent guidance is needed. GPs and parents need to understand what is normal and limitations of medical therapy. We need a greater understanding of the influences on GP prescribing practices, of parents’ knowledge and attitudes and of the pressures on parents of infants with these conditions.
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Invasive bacterial infections in young afebrile infants with a history of fever  |
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Objective
To determine the prevalence of invasive bacterial infections (IBI, pathogenic bacteria in blood or cerebrospinal fluid) in infants less than 90 days old with fever without a source related to the presence or absence of fever on arrival to the emergency department (ED).
Design
Prospective registry-based cohort study.
Setting
Paediatric ED of a tertiary teaching hospital.
Patients
We included infants less than 90 days old with a history of fever evaluated in the ED from 2003 to 2016.
Main outcomes and measures
The prevalence of IBI in patients with a history of fever who were febrile and afebrile on arrival to the ED.
Results
We included 2470 infants: 678 afebrile and 1792 febrile when evaluated in the ED. Fifty-nine (2.4%) were diagnosed with an IBI (bacteraemia 46, meningitis 7 and sepsis 6): 16 in the group of afebrile infants with a history of fever (2.4%, 95% CI 1.4 to 3.8 vs 43 in the febrile group, 2.4%, 95% CI 1.8 to 3.2). Of the 16 afebrile infants with a history of fever diagnosed with an IBI, 14 were well appearing. The rate of non-IBI (pathogenic bacteria in urine or stools) was similar in both groups (15.5% and 16.7%).
Conclusions
The prevalence of IBI in infants ≤90 days with a history of fever is similar regardless of the presence of fever on the arrival at the ED. The approach to infants with a history of fever who are afebrile in the ED should not differ from that recommended for infants who are febrile in the ED.
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Endocarditis in children and adolescents with congenital heart defects: a Norwegian nationwide register-based cohort study  |
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Objectives
Congenital heart defects (CHD) are the most common birth defects worldwide and are an important cause of morbidity and early death. A significant number of deaths occur among patients with infections. CHDs predispose to the development of infective endocarditis (IE) and represent a risk factor for increased mortality due to IE. The aim of this study was to investigate the occurrence and outcomes of IE in children and adolescents with CHDs.
Methods
Data on all children with CHD and IE born in Norway between 1994 and 2016 were retrieved from the Oslo University Hospital’s Clinical Registry for Congenital Heart Defects. Survivors were followed through 2016, and supplementary information was retrieved from medical records.
Results
In this nationwide register-based cohort study, which included all 1 357 543 live births in Norway between 1994 and 2016, the incidence of IE according to the European Society of Cardiology diagnostic criteria was 2.2 per 10 000 person-years among children and adolescents with CHDs. The incidence was stable throughout the period. Most patients with IE had severe CHDs (75%) and had undergone open chest cardiac surgery or catheter-based cardiac interventions the last year before IE. IE-related mortality among children with CHDs and IE was 8% during the follow-up period (mean 12.4 years (±5.5 years)).
Conclusions
The incidence of IE among children and adolescents with CHDs was higher than the reported incidence in the general population. IE was associated with severe CHDs and recent complex cardiac interventions, and had significant mortality.
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Children and adolescents experiences of primary lymphoedema: semistructured interview study  |
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Background
Congenital lymphoedema is a lifelong condition that has detrimental physical and psychosocial outcomes for young patients and burdensome treatment responsibilities that may hamper patients’ motivation for self-management. There is limited research from the perspective of young people with primary lymphoedema. We aimed to describe the experiences and views of children and adolescents with lymphoedema to inform patient-centred practice.
Methods
Twenty patients (aged 8–21 years) with primary lymphoedema were purposively sampled from two paediatric clinics in Sydney, Australia, to participate in a semistructured interview. The transcripts were analysed thematically.
Results
We identified six themes: reinforcing abnormality (damaging self-esteem, self-consciousness, frustrating restrictions and isolation); negotiating uncertainties (fearing condition worsening, deprioritised and sidelined, questioning cause and permanence, widespread unawareness); vulnerability and caution (avoiding pain and discomfort, preventing severe and permanent consequences, depending on permission, limiting goals and aspirations); disruptive transition (resisting change, losing progress and support, avoiding treatment costs); developing resilience (focusing on the positives, embracing individuality, recalibrating normality, prioritising coping) and taking responsibility (individualising treatment, needing support, external pressure and motivation, sticking to a routine, seeking independence).
Conclusion
Children and adolescents learn to adjust to the daily demands of lymphoedema management by individualising and accepting their treatment, but many continue to struggle with their self-esteem and lifestyle restrictions. Strategies are needed to empower young patients to advocate for themselves during their transition to adult care. Treatment plans that minimise social restrictions, address emotional consequences and incorporate patients’ preferences could improve adherence, satisfaction and outcomes.
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Diastematomyelia in a 3-year-old girl  |
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A 3-year-old girl was referred to our paediatrics department with a hairy patch over her lower spine (figure 1). There was a hairy patch encompassing the lumbar spine in the midline, her right leg and foot were thinner than the left and there was bilateral toe curling. There was no evidence of weakness and walking, and bladder and bowel control were normal. She had an absent right ankle jerk, but other neurology was intact. An MRI showed diastematomyelia at L2/3 level due to a prominent bony spur extending between the disc and the lamina consistent with a split cord malformation (SCM) type 1 (figure 2. The cleft in the cord extended from lower L1 level to upper L3 (figure 3). The conus was abnormally low at L3/4 level (normally no lower than the inferior border of L2) with a taut filum terminale. Diastematomyelia is a rare... |
Gene therapy for beta-thalassaemia  |
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The list of life-limiting inherited conditions for which radically new gene-based treatments are appearing continues to grow. The latest is β-thalassaemia, which affects over 1/4 million people worldwide. The majority of sufferers have a lifelong continuing blood transfusion requirement, with all the complications that come with it, such as iron overload. Those fortunate enough to have a compatible relative can sometimes be ‘cured’ by a bone marrow transplant, but that won’t work for many. Virus vectors have been developed as a means of introducing modified DNA into deficient cells. Researchers in the US and France successfully trialled using a lentiviral vector to transduce an extended β-globin gene structure into thalassaemic haemopoietic stem cells in the lab (Thompson A et al. NEJM 2018. doi: 10.1056/NEJMoa1705342). They then went on to carry out a multicentre phase 1–2 clinical trial, in 22 transfusion-dependent patients aged 12 to 35 (mean 19) years. Nine... |
Evaluating the process and outcomes of child death review in the Solomon Islands  |
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While maternal and perinatal mortality auditing has been strongly promoted by the World Health Organization (WHO), there has been very limited promotion or evaluation of child death auditing in low/middle-income settings. In 2017, a standardised child death review process was introduced in the paediatric department of the National Hospital in Honiara, Solomon Islands. We evaluated the process and outcomes of child death reviews. The child death auditing process was assessed through systematic observations made at each of the weekly meetings using the following standards for evaluation: (1) adapted WHO tools for paediatric auditing; (2) the five stages of the audit cycle; (3) published principles of paediatric audit; and (4) WHO and Solomon Islands national clinical standards of Hospital Care for Children. Thirty-three child death review meetings were conducted over 6 months, reviewing 66 neonatal and child deaths. Some areas of the process were satisfactory and other areas were identified for improvement. The latter included use of a more systematic classification of causes of death, inclusion of social risk factors and community problems in the modifiable factors and more follow-up with implementation of action plans. Areas for improvement were in communication, clinical assessment and treatment, availability of laboratory tests, antenatal clinic attendance and equipment for high dependency neonatal and paediatric care. Many of the changes recommended by audit require a quality improvement team to implement. Child death auditing can be done in resource-limited settings and yield useful information of gaps which are linked to preventable deaths; however, using the data to produce meaningful changes in practice is the greatest challenge. Audit is an iterative and evolving process that needs a structure, tools, evaluation, and needs to be embedded in the culture of a hospital as part of overall quality improvement, and requires a quality improvement team to follow-up and implement action plans.
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How to calculate probability of UTI in febrile infants  |
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Urinary tract infection (UTI) in pre-verbal infants is not only one of the most common bacterial infections we see, but also the most difficult to diagnose. The younger the infant, the more it matters and the more difficult it is. How can we pick out the few with a potentially kidney-damaging UTI from the mass that present with fever and no focus? The Holy Grail would be a simple instant test that could distinguish harmful bacteriuria with 100% specificity and sensitivity, so that no UTIs are missed, and unnecessary invasive urine collection and antibiotic prescription is avoided. No such test exists as yet, so it seems worth trying to do better with what we have. Researchers from Pittsburgh, USA, analysed a database of 384 infants aged 2 to 23 months who had presented to their emergency department with a fever of 38°C or more, between 2007 and 2013 (Shaikh... |
Parental absence in early childhood and onset of smoking and alcohol consumption before adolescence  |
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Background
Parental absence, due to death or separation from a parent, has been associated with smoking and alcohol consumption in adolescence and adulthood. The aim of this study was to investigate whether parental absence in early childhood was associated with smoking and alcohol uptake before adolescence.
Methods
Data on 10 940 children from the UK's Millennium Cohort Study were used. Logistic regression was used to test associations between parental absence (0–7 years) and reports of smoking and alcohol consumption at age 11.
Results
Children who experienced parental absence were more likely to have smoked (OR=2.58, 95% CI 1.88 to 3.56) and consumed alcohol (OR=1.46, 95% CI 1.25 to 1.72). No differences were found by child sex or age, or parent absent. Children who experienced parental death were less likely to have drunk alcohol but those who had were more likely to have consumed enough to feel drunk.
Conclusions
Parental absence was associated with early uptake of risky health behaviours in a large, nationally representative UK cohort. Children who experience parental absence should be supported in early life in order to prevent smoking and alcohol initiation.
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Pharmacokinetic studies in children: recommendations for practice and research  |
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Optimising the dosing of medicines for neonates and children remains a challenge. The importance of pharmacokinetic (PK) and pharmacodynamic (PD) research is recognised both in medicines regulation and paediatric clinical pharmacology, yet there remain barriers to undertaking high-quality PK and PD studies. While these studies are essential in understanding the dose–concentration–effect relationship and should underpin dosing recommendations, this review examines how challenges affecting the design and conduct of paediatric pharmacological studies can be overcome using targeted pharmacometric strategies. Model-based approaches confer benefits at all stages of the drug life-cycle, from identifying the first dose to be used in children, to clinical trial design, and optimising the dosing regimens of older, off-patent medications. To benefit patients, strategies to ensure that new PK, PD and trial data are incorporated into evidence-based dosing recommendations are needed. This review summarises practical strategies to address current challenges, particularly the use of model-based (pharmacometric) approaches in study design and analysis. Recommendations for practice and directions for future paediatric pharmacological research are given, based on current literature and our joint international experience. Success of PK research in children requires a robust infrastructure, with sustainable funding mechanisms at its core, supported by political and regulatory initiatives, and international collaborations. There is a unique opportunity to advance paediatric medicines research at an unprecedented pace, bringing the age of evidence-based paediatric pharmacotherapy into sight.
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The paediatrician and the management of common gynaecological conditions  |
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Paediatric gynaecology is an emerging discipline. Since 2000, there has been an advanced training programme in paediatric gynaecology available for obstetric and gynaecology trainees; additionally, a set of clinical standards 1 for the care of paediatric and adolescent patients has been developed by The British Society of Paediatric and Adolescent Gynaecology (BritSPAG). BritSPAG is a multidisciplinary group of professionals including gynaecologists, paediatricians, paediatric urologists and endocrinologists.
Girls with gynaecological conditions are often seen in general paediatric services; it is important that those assessing them are confident in identifying patients who require more specialist care. Despite this, gynaecology does not appear in the Royal College of Paediatrics and Child Health curriculum. This article aims to increase the knowledge base and confidence of paediatricians in dealing with common paediatric and adolescent gynaecological conditions.
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Question 1: Is oral dexamethasone as good as oral prednisolone for childhood wheeze requiring steroids?  |
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Scenario A 5-year-old boy presents to the emergency department (ED) with an acute exacerbation of asthma, is assessed as having a tight chest and has an oxygen requirement. He is followed up regularly in a paediatric respiratory clinic and is normally on a preventer inhaler. Along with back-to-back mixed nebulisers, you prescribe oral prednisolone, which he vomits 10 min later. The paediatric specialty trainee says she has heard of a recent randomised controlled trial (RCT) that shows that a single dose of oral dexamethasone is as good as 3 days of prednisolone in the management of acute wheeze, and you know from your own experience that oral dexamethasone is usually well tolerated by kids presenting with croup. Given how often you see children vomit prednisolone, you ask yourself whether the ED should switch to oral dexamethasone instead for childhood wheeze. Structured clinical question For (children presenting to... |
What is experimental?  |
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We’ve said before that evidence-based medicine is about using the ‘best available’ evidence, and that while we’d love all our treatments to be supported by large randomised clinical trials and systematic reviews, Archimedes is living proof that this often isn’t the case. Sometimes we’ll be in the situation where the treatment could be quite reasonably subjected to a randomised trial. But there isn’t a trial that’s up and open to be accessed. So if we offer that treatment ... is it experimental? What makes a treatment ‘experimental’? What does ‘experimental’ even mean? The concept I have is that an ‘experimental’ therapy is one where we haven’t used it for this indication. The drug may well have been used in humans, in children even, but the basis for the choice is entirely pathological. Each time we use a new drug though, it’s surely an ‘experiment’ for each child? This is... |
Question 2: Should nasal mask or binasal prongs be used for continuous positive airway pressure in preterm infants?  |
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Scenario An infant born to primigravida mother at 29 weeks’ gestational age (GA) has respiratory distress syndrome (RDS). The fellow on call elected to start nasal continuous positive airway pressure (NCPAP) support. A paediatric resident in her neonatology rotation asks whether nasal mask is better than binasal prongs or vice versa for applying NCPAP support. Structured clinical question In a preterm infant <37 weeks’ GA with RDS (patient) whether NCPAP applied with a nasal mask (intervention) compared with that with binasal prongs (comparison) reducesendotracheal ventilation or NCPAP failure (defined by authors) in first 72 hours (primary outcome) nasal trauma (all grades, moderate to severe (excoriation/breakdown, bleeding or narrowing of nasal passages)) (secondary outcome) and chronic lung disease (CLD) (all grades, moderate to severe (oxygen or pressure requirements)) at 36 weeks’ GA (secondary outcome). Search Study selection: randomised or quasirandomised clinical trials and systematic reviews comparing NCPAP (bubble,... |
Easier to see the speck in your critical peers eyes than the log in your own? Response to Debelle et al  |
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Once again a group of paediatricians1 has made critical comments about our systematic review of the shaken baby literature.2 3 Surprisingly, however, this time the criticism includes accusations of circular reasoning! Surprisingly, because the main reason that we assessed the shaken baby studies as biased was that they were based on circular reasoning.2 3 Even though it may be easier to observe ‘the speck in your friend’s eye than the log in your own’, it is remarkable that Debelle et al1 avoid criticising circular reasoning within their own research area. On the contrary, the authors maintain that the clinical investigations of suspected cases of shaken baby syndrome (SBS)/abusive head trauma (AHT are based on ‘rigorous assessment’, ‘comprehensive clinical investigations’ and ‘sound clinical, evidence-based practice, with the child’s interest at its core1’. We agree that determination of... |
Dont blame the messenger: a response to Debelle et al and the Royal College of Paediatrics and Child Health  |
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Instead of acknowledging the clear lessons of the Swedish Agency for Health Technology Assessment and Assessment of Social Services (SBU’s) review, Debelle et al1 choose to attack the messenger for delivering news about the impoverished state of the medical literature on shaken baby syndrome/abusive head trauma. They criticise the SBU’s literature search, but fail to put forward the body of unbiased literature that the SBU has supposedly overlooked, which suggests that the SBU has been thorough. They claim the SBU is inconsistent by saying that shaking may cause the triad and that there is insufficient evidence that the triad is diagnostic for shaking. However, this is no more inconsistent than saying that influenza can cause headache but headache is not diagnostic of influenza. They claim that the SBU’s research question, the specificity of the triad as an indication of shaking, is clinically irrelevant. Yet elsewhere they acknowledge... |
Response to comments from Professor Niels Lynoe et al and Dr Nicholas R Binney et al  |
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We welcome scientific debate around the recognition of abusive head trauma. The Swedish Agency for Health Technology Assessment and Assessment of Social Services (SBU) report concludes, ‘There is limited scientific evidence that the triad and therefore its components can be associated with traumatic shaking.’1 We have provided a methodological critique of the SBU report2 which we hope provides points for others to consider when interpreting it. We would just like to correct a couple of inaccuracies presented in the letter from Binney et al3 and reiterate the importance of correct terminology in this field. Binney et al state that we ‘claim the SBU are inconsistent by saying that shaking may cause the triad,’ then concluding ‘that there is insufficient evidence that the triad is diagnostic for shaking.’ And second that we ‘argue that studies the SBU dismiss due to circularity bias would if... |
Highlights from the literature  |
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Can Zika virus treat brain tumours? Sometimes in medicine, something that seems unequivocally bad turns out to have a therapeutic use—think of botulinum toxin. Zika virus has caused a devastating epidemic of microcephaly, mostly in South America, as result of maternal exposure in pregnancy. The virus has now been characterised, and researchers in Brazil wondered if its known neuro-destructive properties could be demonstrated in neurons that are rapidly dividing in postnatal life, as with some brain tumours (Kaid C et al. Cancer Research 2018. doi: 10.1158/0008-5472.CAN-17-3201). First they exposed tumour cell lines in vitro to the Brazilian strain of the virus (ZIKVBR), and found that it selectively infected neuromalignant cells, especially embryonic cell lines, but was ineffective against other tumour cells (breast, prostate etc.). Then in mouse model experiments, they xeno-grafted human embryonic tumour cells (effectively medulloblastoma and teratoma cells) in to mice and injected ZIKVBR into their... |
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