Drivers for low-acuity pediatric emergency department visits in two tertiary hospitals in Switzerland: a cross-sectional, questionnaire-based study.

PURPOSE: Low-acuity pediatric emergency department (PED) visits are frequent in high-income countries and have a negative impact on patient care at the individual and health system levels. Knowing what drives low-acuity PED visits is crucial to inform adaptations in health care delivery. We aimed to identify factors associated with low-acuity PED visits in Switzerland, including socioeconomic status, demographic features, and medical resources of families. METHODS: We conducted a prospective, questionnaire-based study in the PEDs of two Swiss tertiary care hospitals, Bern and Lausanne. We invited all consecutive children and their caregiver attending the PED during data collection times representative of the overall PED consultation structure (e.g. day/night, weekdays/weekends) to complete a questionnaire on demographic features, socioeconomic status, and medical resources. We collected medical and administrative data about the visit and defined low-acuity visits as those meeting all of the following criteria: (1) triage category 4 or 5 on the Australasian Triage Scale, (2) no imaging or laboratory test performed, and (3) discharge home. We used a binary multiple logistic regression model to identify factors associated with low-acuity visits. RESULTS: We analysed 778 PED visits (September 2019 to July 2020). Most children visiting our PEDs had a designated primary care provider (92%), with only 6% not having seen them during the last year. Fifty-five per cent of caregivers had asked for medical advice before coming to the PED. The proportion of low-acuity visits was 58%. Low-acuity visits were associated with caregiver's difficulties paying bills (aOR 2.6, 95% CI 1.6 - 4.4), having already visited a PED in the last 6 months (aOR 1.7, 95% CI 1.1 - 2.5) but not with parental education status, nor parental country of birth, parental employment status or absence of family network. CONCLUSION: Economic precariousness is an important driver for low-acuity PED visits in Switzerland, a high-income country with compulsory health coverage where most children have a designated primary care provider and a regular pediatric follow-up. Primary care providers and PEDs should screen families for economic precariousness and offer anticipatory guidance and connect those in financial need to social support.

Using Clinical Vignettes to Understand the Complexity of Diagnosing Type 1 Diabetes in Sub-Saharan Africa.

Lack of awareness, access to insulin and diabetes care can result in high levels of morbidity and mortality for children with type 1 diabetes (T1DM) in sub-Saharan Africa (SSA). Improvements in access to insulin and diabetes management have improved outcomes in some settings. However, many people still present in diabetic ketoacidosis (DKA) in parallel to misdiagnosis of children with T1DM in contexts with high rates of communicable diseases. The aim of this study was to highlight the complexity of diagnosing pediatric T1DM in a healthcare environment dominated by infectious diseases and lack of adequate health system resources. This was done by developing clinical vignettes and recreating the hypothetico-deductive process of a clinician confronted with DKA in the absence of identification of pathognomonic elements of diabetes and with limited diagnostic tools. A non-systematic literature search for T1DM and DKA in SSA was conducted and used to construct clinical vignettes for children presenting in DKA. A broad differential diagnosis of the main conditions present in SSA was made, then used to construct a clinician's medical reasoning, and anticipate the results of different actions on the diagnostic process. An examination of the use of the digital based Integrated Management of Childhood Illness diagnostic algorithm was done, and an analysis of the software's efficiency in adequately diagnosing DKA was assessed. The main obstacles to diagnosis were low specificity of non-pathognomonic DKA symptoms and lack of tools to measure blood or urine glucose. Avenues for improvement include awareness of T1DM symptomatology in communities and health systems, and greater availability of diagnostic tests. Through this work clinical vignettes are shown to be a useful tool in analyzing the obstacles to underdiagnosis of diabetes, a technique that could be used for other pathologies in limited settings, for clinical teaching, research, and advocacy.

[Ten years of nurse consultation at the pediatric emergency department]. / Dix ans de consultation infirmière médico-déléguée aux urgences pédiatriques.

The Nurse consultation (CI) was implemented in 2013 at the emergency department of the Lausanne Children's Hospital. It offers medical delegated care for children aged three to 18. Ten years after its implementation, this article takes stock of its progress. Patients and families are satisfied with the care provided at a rate of 94.3 %. The CI seems to offer quality and safe healthcare. It allows the emergency team to have more time and resources for patients whose lives are at risk or need careful assessment due to their age or medical history. The CI is an innovative and relevant model of care in the context of uncomplicated childhood illnesses.

La consultation infirmière (CI) a été mise en place en 2013 aux urgences de l'Hôpital de l'enfance de Lausanne (HEL). Elle propose une prise en charge sous délégation médicale d'enfants âgés de trois à 18 ans. Dix ans après son implantation, cet article fait le point. Les patients et familles sont satisfaits de la prise en charge à 94,3 %. La CI semble offrir des soins de qualité et sécuritaires. Elle permet à l'équipe des urgences d'avoir plus de temps et de moyens pour les patients dont le pronostic vital est engagé ou qui sont à risque au vu de leur âge ou leurs antécédents. La CI est un modèle innovant et pertinent de prise en charge dans un contexte de pathologies simples de pédiatrie.

School-based HPV Vaccination: Variation in Inter-school Vaccine Uptake not Influenced by the Introduction of a New Information Brochure.

BACKGROUND: Switzerland, with an adolescent HPV vaccination coverage at 59%, remains far from reaching the crucial swiss national goal of 80% coverage. Our objective was to implement a new information brochure in schools to increase HPV vaccination uptake. METHODS: We designed a public health quality project. A new information brochure was produced and was distributed to a test group of 9th grade students from the Canton of Vaud, in Switzerland during the 2019-2020 school year. Vaccine uptake of the test group was compared to those of all other students in 2019-2020 and of students in the same schools in 2017-2018. RESULTS: 12,143 electronic records were analyzed. 713 students were enrolled in 6 schools where the new brochure was distributed. Median age was 13 years (IQR 12-13), and 6,031 (49.7%) were female. Vaccine uptake was 52% (6,299/12,143). The new brochure did not result in increased uptake. Age ≥ 13 years (aOR 1.39, 95% CI 1.22-1.58) was significantly associated with uptake. Uptake increased between 2017-2018 (51%, 3,216/6,307) and 2019-2020 (52.8%, 3,083/5,836, p=0.04) due to increased acceptance among boys. The only determinant of uptake in 2019-2020 was uptake in the same schools in 2017-2018. CONCLUSION: The introduction of a new information brochure was insufficient to increase HPV vaccination coverage. More innovative strategies are needed.

Off-label use of psychotropic drugs in a Swiss paediatric service: similar results from two different cohort studies.

BACKGROUND: The high off-label use of drugs in paediatric patients raises questions on the efficacy and safety when prescribing psychotropic drugs. In our studies, we aimed to characterise the use of psychotropic drugs in the paediatric service of a tertiary hospital and quantify the proportion of off-label prescriptions with respect to age, indication and dosage recommendations approved in Switzerland, France and the USA. METHODS: We conducted a retrospective cohort study (RCS) that included hospitalised patients from 1 December 2017, to 28 June 2018 with at least one PD prescription (n = 74) and a prospective cohort study (PCS) that included those hospitalised from 29 June 2018, to 30 November 2018 with at least one psychotropic drug prescription (n = 37). For both studies, we collected demographic, medical and medication data. Off-label prescriptions were identified by comparing the marketing authorisations published in the three selected countries. RESULTS: The average age of RCS and PCS patients were 13 ± 3 years and 14 ± 2 years, respectively. Of the 168 and 86 psychotropic prescriptions collected in the RCS and PCS, respectively, 70% and 71% prescriptions were off-label based on Swiss marketing authorisations. These rates declined when compared with French marketing authorisations (61% and 67% prescriptions) and were significantly lower when compared with American marketing authorisations (56% and 51% prescriptions). Psychotropic drugs were often prescribed as needed in both studies (53% and 43% of prescriptions), with only half of the patients actually receiving one of these prescribed psychotropic drugs. CONCLUSION: Our results showed a high proportion of off-label prescriptions of psychotropic drugs in a hospital setting. The off-label prescription rates according to Swiss marketing authorisations were the highest when compared with French and American marketing authorisations. Harmonisation of either international marketing authorisations or dosage recommendations at a national level could be a step forward to improved and evidence-based use of psychotropic drugs in children and adolescents.

Medical Facilities for Refugees in Europe: Creating a Consultation for Resettled Syrian Families.

The wave of migration that has hit Europe in recent years has led to several changes in the organization of asylum systems and medical care provided to migrants. Previous studies indicate that asylum seekers and refugees face multiple barriers in accessing health care. For that reason, adapted structures are needed. In this context, a family consultation service was implemented in our medical center in Lausanne, Switzerland. It aimed at addressing the unique health care needs of recently resettled families from Syria, which has been the leading source country for refugees since 2014. This intervention, developed through collaboration between the University Center for Primary Care and Public Health (Unisanté) and the Children's Hospital of Lausanne (HEL) involved a multidisciplinary team comprising a pediatrician, a general practitioner and a pediatric nurse. Bringing together a multidisciplinary team optimized care coordination, facilitated communication between care providers and enabled a more global vision of the family system with the aim of enhancing quality of care.

Characteristics of low-acuity paediatric emergency department consultations in two tertiary hospitals in Switzerland: a retrospective observational study.

Background: Low-acuity paediatric emergency department (PED) visits are common in high-income countries and are an increasing burden for the healthcare system and quality of care. Little is known about low-acuity PED visits in Switzerland. This study shows frequency and characteristics of such visits in two large PEDs in German-speaking and French-speaking regions of Switzerland. Methods: We conducted a retrospective observational study in the PED of two Swiss tertiary care hospitals, Bern and Lausanne. We extracted standardised administrative and medical data from the clinic information system for all PED visits of children aged 0-17 years from January to December 2018. We defined low-acuity visits as those meeting all of the following criteria: (1) triage category 4 or 5 on the Australasian Triage Scale, (2) no imaging or laboratory test performed and (3) discharge home. We used a binary multiple logistic regression model to identify factors associated with low-acuity visits. Results: We analysed 53 089 PED visits. The proportion of low-acuity visits was 54% (95% CI 53% to 54%, 28 556 visits). Low-acuity visits were associated with age younger than 5 years (adjusted OR, aOR 1.87, 95% CI 1.81 to 1.94), living within a 5 km radius of PED (aOR 1.27, 95% CI 1.22 to 1.32), and after hour presentations (weekends: aOR 1.14, 95% CI 1.10 to 1.18, nights: aOR 1.10, 95% CI 1.23 to 1.36). Conclusion: Low-acuity visits are frequent in our PEDs and associated with younger age and convenience factors (proximity of residency and after hour presentation), pointing to a high demand for paediatric urgent care services in Switzerland not currently covered by the primary healthcare system.

Performance of RT-PCR on Saliva Specimens Compared With Nasopharyngeal Swabs for the Detection of SARS-CoV-2 in Children: A Prospective Comparative Clinical Trial.

BACKGROUND: Saliva reverse transcriptase-Polymerase chain reaction (RT-PCR) is an attractive alternative for the detection of severe acute respiratory syndrome coronavirus 2 in adults with less known in children. METHODS: Children with coronavirus disease 2019 symptoms were prospectively enrolled in a 1-month comparative clinical trial of saliva and nasopharyngeal (NP) RT-PCR. Detection rates and sensitivities of saliva and NP RT-PCR were compared as well as discordant NP and saliva RT-PCR findings including viral loads (VLs). RESULTS: Of 405 patients enrolled, 397 patients had 2 tests performed. Mean age was 12.7 years (range, 1.2-17.9). Sensitivity of saliva was 85.2% (95% confidence interval: 78.2%-92.1%) when using NP as the standard; sensitivity of NP was 94.5% (89.8%-99.2%) when saliva was considered as the standard. For a NP RT-PCR VL threshold of ≥103 and ≥104 copies/mL, sensitivity of saliva increases to 88.7% and 95.2%, respectively. Sensitivity of saliva and NP swabs was, respectively, 89.5% and 95.3% in patient with symptoms less than 4 days (P = 0.249) and 70.0% and 95.0% in those with symptoms ≥4-7 days (P = 0.096). The 15 patients who had an isolated positive NP RT-PCR were younger (P = 0.034), had lower NP VL (median 5.6 × 103 vs. 3.9 × 107, P < 0.001), and could not drool saliva at the end of the sampling (P = 0.002). VLs were lower with saliva than with NP RT-PCR (median 8.7 cp/mL × 104; interquartile range 1.2 × 104-5.2 × 105; vs. median 4.0 × 107 cp/mL; interquartile range, 8.6 × 105-1 × 108; P < 0.001). CONCLUSIONS: While RT-PCR testing on saliva performed more poorly in younger children and likely after longer duration of symptoms, saliva remains an attractive alternative to NP swabs in children.

A hidden side of the COVID-19 pandemic in children: the double burden of undernutrition and overnutrition.

The COVID-19 pandemic has deteriorated key determinants of health and caused major upheavals around the world. Children, although less directly affected by the virus, are paying a heavy price through the indirect effects of the crisis, including poor diet, mental health impact, social isolation, addiction to screens and lack of schooling and health care, particularly among vulnerable groups. This paper is aimed at discussing the potential impact of this pandemic on children's nutrition and lifestyle. Preliminary data from the literature and from our survey show significant disruptions in nutrition and lifestyle habits of children. While undernutrition is expected to worsen in poor countries, obesity rates could increase in middle- and high-income countries especially among precarious groups widening the gap in health and social inequalities.The real impact of the COVID-19 pandemic on children extends well beyond that of a viral infection. This crisis has public health implications that could have life-long consequences on children. It requires effective and targeted measures mainly for vulnerable children and households to guarantee children's basic rights for optimal nutrition, health and development.

Prevalence and risk factors of lactic acidosis in children with acute moderate and severe asthma, a prospective observational study.

Lactic acidosis is a common complication of status asthmaticus in adults. However, data is sparse in children. The aim of this study was to describe the prevalence and risk factors for lactic acidosis in children hospitalised for acute moderate or severe asthma. A total of 154 children 2-17 years of age were enrolled in a prospective observational study conducted in a tertiary hospital. All had capillary blood gas assessment 4 h after the first dose of salbutamol in hospital. The primary endpoint was the prevalence of lactic acidosis. Potential contributing factors such as age, sex, BMI, initial degree of asthma severity, type of salbutamol administration (nebuliser or inhaler), steroids, ipratropium bromide, and glucose-containing maintenance fluid represented secondary endpoints. All in all, 87% of patients had hyperlactatemia (lactate concentration > 2.2 mmol/l). Lactic acidosis (lactate concentration > 5 mmol/l and anion gap ≥ 16 mmol/l) was observed in 26%. In multivariate analysis, age more than 6 years (OR = 2.8, 95% CI 1.2-6.6), glycemia above 11 mmol/l (OR = 3.2 95% CI 1.4-7.4), and salbutamol administered by nebuliser (OR = 10, 95% CI 2.7-47) were identified as risk factors for lactic acidosis in children with moderate or severe asthma.Conclusion: Lactic acidosis is a frequent and early complication of acute moderate or severe asthma in children. What is Known: • Lactic acidosis during acute asthma is associated with b2-mimetics administration. • Salbutamol-related lactic acidosis is self-limited but important to recognise, as compensatory hyperventilation of lactic acidosis can be mistaken for respiratory worsening and lead to inappropriate supplemental bronchodilator administration. What is New: • Lactic acidosis is a frequent complication of acute asthma in the paediatric population. • Age older than 6 years, hyperglycaemia, and nebulised salbutamol are risk factors for lactic acidosis during asthma.

Inhalation technique practical skills and knowledge among physicians and nurses in two pediatric emergency settings.

Introduction: Correct technique with a pressurized metered-dose inhaler (pMDI) equipped with a valved holding chamber (VHC) or spacer provides an important advantage for adequate control of asthma and virus-induced wheezing in young children. The aim of this study was to assess the ability and knowledge of physicians and nurses to use a pMDI with a masked VHC in two pediatric emergency units.Methods: Study design: Two-center observational study. Inhaler use technique was assessed in 50 physicians and 50 nurses using a child mannequin and a validated videotaped nine-step scoring method. The participants' knowledge was evaluated by a questionnaire.Results: The inhalation technique was perfectly mastered by 49% of the study participants and almost perfectly mastered by another 34% (mean score 8.3 ± 0.7; range 5-9). Nurses were more likely than doctors to demonstrate the technique perfectly (66% vs. 32%, p < 0.05). The two most common errors were forgetting to shake the pMDI between two consecutive puffs (38% of the participants) and putting the patient in an incorrect position (11%). About half of the participants reported that they checked each patient's inhalation technique at every opportunity and knew how to clean the VHC. A large majority did not employ a reliable method to determine the amount of medication remaining in pMDIs without a counter.Conclusion: Healthcare professionals' practical skills and knowledge on inhalation therapy were not completely mastered and could be improved with a mandatory training program.

Prevalence of tuberculosis in migrant children in Switzerland and relevance of current screening guidelines.

AIMS: Since 2016, Swiss guidelines recommend screening of all migrant children <5 years of age for tuberculosis (TB) and to screen older children only if they have risk factors for TB. Our goals were to describe the epidemiology of latent tuberculosis (LTBI) in migrant children at the Lausanne University Hospital, to identify determinants of LTBI and tuberculosis disease (TBD), and to evaluate the risk of a false-positive tuberculin skin test (TST) when using a positivity limit of 5 mm. METHODS: Newly arrived migrant children 0–18 years of age were prospectively enrolled from 31 August 2015 to 31 August 2017. Every migrant child was assessed for the risk of TB exposure and TBD and was administered a TST. A TB-spot test was performed in children ≥5 years of age when the TST was positive. Children with clinical and/or radiological signs of TBD were further investigated. Children ≥5 years of age with a positive TB-spot test and children <5 years of age with a positive TST, without clinico-radiological signs of TBD received a diagnosis of LTBI. A false-positive TST result was diagnosed in children ≥5 years of age when the TB-spot test was negative. Potential determinants of TB (LTBI and TBD) and of false-positive TSTs were identified. Student’s t-test or the Kruskal-Wallis test were used for continuous variables and the chi-square test or Fisher’s exact test for categorical variables. All variables with a p-value <0.05 were included in a multivariate logistic regression model. RESULTS: Two hundred and fifty-three patients were eligible for the study. The median age of the patients was 8.1 years (interquartile range [IQR] 4.5–12.8) and 104 (41%) were female. Twenty-four percent of the patients (62/253) came from a country with a moderate–high incidence of TBD (≥80 cases per 100,000 individuals). Twenty-eight patients (11%) had positive TSTs, and TB was confirmed in 17 (6.7%) of these patients (16 with LTBI and 1 with TBD). On multivariate analysis, moderate–high incidence of TBD in the country of origin (adjusted odds ratio [aOR] 18.8, 95% confidence interval [CI] 5.1–68.6; p <0.001), older age (aOR 1.1, 95% CI 1.0–1.3; p = 0.025), and contact with a TBD patient (aOR 8, 95% CI 1.8–36.2; p = 0.007) were associated with a diagnosis of TB. Among the 23 children over 5 years of age who had a positive TST with measurement available, a measure between 5–9 mm was more frequent in case of a false-positive TST (5/9, 56% vs 0/14, 0%, p = 0.002). BCG vaccination was the only predictor of a false-positive TST (p = 0.03). CONCLUSION: Screening migrant children ≥5 years of age for TB could confer a public health benefit even in the absence of other risk factors. The limit of TST positivity could be raised from ≥5 mm to ≥10 mm to decrease the rate of false-positive results. A national assessment of migrant children between the ages of 5 and 15 should be carried out to confirm our findings.

Nebulised hypertonic saline in moderate-to-severe bronchiolitis: a randomised clinical trial.

OBJECTIVES: To investigate whether nebulised hypertonic saline (HS) treatment would decrease length of hospital stay (LOS) among infants with moderate-to severe-bronchiolitis compared with standard supportive care (SC). METHODS: We conducted an open, multicentre, randomised clinical trial from 1 April 2013 to 31 March 2016, in Swiss children's hospitals. Patients aged 6 weeks to 24 months with a primary diagnosis of moderate or severe bronchiolitis were included. Children with previous episodes of wheezing, cardiac disease, chronic respiratory disease, immunodeficiency, prematurity (gestational age <34 weeks), corticotherapy in the preceding 2 weeks or inhaled bronchodilators within 24 hours before presentation were excluded. Patients were randomised to receive standard SC with nebulisation of 4 mL of 3% sodium chloride every 6 hours versus SSC. Main outcomes and measures were LOS duration of oxygen therapy, transfer to intensive care unit (ICU), readmission within 7 days following discharge and adverse events. RESULTS: 121 children were randomised. No statistically significant differences were found between treatment groups at baseline (age, Wang Score, atopic history, smoking exposure). Children in the HS group had a non-significant difference in length of stay -2.8 hours (-10; 16) compared with the SC group. There were no differences in oxygen therapy duration, transfer to ICU, readmission rate or adverse events. The intervention was discontinued at the parents' request in 16% of the cases. CONCLUSION: Our study does not support the use of HS nebulisation in children with moderate to severe bronchiolitis. TRIAL REGISTRATION NUMBER: NCT01812525.

Single doses of diphtheria-tetanus-pertussis and poliomyelitis vaccines are sufficient to generate a booster-type response to tetanus in most migrant children.

BACKGROUND: Immunization coverage for three doses of the diphtheria-tetanus-pertussis and poliomyelitis vaccines in infants is high worldwide, therefore despite the lack of documentation of past vaccinations, most migrant children do not require complete revaccination. Our strategy was to administer a single dose of a tetanus toxoid containing vaccine (TTCV) to migrant children followed by anti-tetanus toxoid (TT) serology to determine whether additional vaccine doses were required. Our goal was to estimate the basic TTCV coverage and to identify potential determinants of the vaccination response. METHODS: Newly arrived migrant children were prospectively enrolled between October 2014 and August 2017. We included patients aged 1-18 years with no proof of past vaccinations who accepted a single dose of TTCV. Anti-TT serology was performed after 4-6 weeks, and an anti-TT level ≥ 1 IU/mL was considered a booster-type antibody response with no need for additional doses of TTCV. Potential determinants of the vaccination response were identified using univariate and multivariate linear regression analyses. RESULTS: Two hundred and eight children were eligible for analysis. The mean age of the children was 9 (±4.5) years and 100 (48%) were female. The majority (n = 129, 62%) of the children came from the WHO Eastern Mediterranean region. Only three patients (1.4%) required additional vaccine doses. A Syrian origin (p < 0.001) and direct arrival primarily by airplane into Switzerland without transiting through other European countries (p = 0.029) associated with higher anti-TT levels in a multivariate regression model (multiple r2 = 0.210, p < 0.001). CONCLUSION: A single dose of TTCV is enough to generate long-term protection in most migrant children. In the context of high basic vaccination coverage, the strategy, which consists of administration of a single dose of TTCV followed by anti-TT serology, can be considered where serotesting is available and economical.

Retrospective study on the usefulness of pulse oximetry for the identification of young children with severe illnesses and severe pneumonia in a rural outpatient clinic of Papua New Guinea.

OBJECTIVE: This secondary analysis of data of a randomized controlled trial (RCT) retrospectively investigated the performance of pulse oximetry in identifying children with severe illnesses, with and without respiratory signs/symptoms, in a cohort of children followed for morbid episodes in an intervention trial assessing the efficacy of Intermittent Preventive Treatment for malaria in infants (IPTi) in Papua New Guinea (PNG) from June 2006 to May 2010. SETTING: The IPTi study was conducted in a paediatric population visiting two health centres on the north coast of PNG in the Mugil area of the Sumkar District. PARTICIPANTS: A total of 669 children visited the clinic and a total of 1921 illness episodes were recorded. Inclusion criteria were: age between 3 and 27 months, full clinical record (signs/symptoms) and pulse oximetry used systematically to assess sick children at all visits. Children were excluded if they visited the clinic in the previous 14 days. OUTCOMES: The outcome measures were severe illness, severe pneumonia, pneumonia, defined by the Integrated Management of Childhood Illness (IMCI) definitions, and hospitalization. RESULTS: Out of 1921 illness episodes, 1663 fulfilled the inclusion criteria. A total of 139 severe illnesses were identified, of which 93 were severe pneumonia. The ROC curves of pulse oximetry (continuous variable) showed an AUC of 0.63, 0.68 and 0.65 for prediction of severe illness, severe pneumonia and hospitalization, respectively. Pulse oximetry allowed better discrimination between severe and non-severe illness, severe and non-severe pneumonia, admitted and non-admitted patients, in children ≤12-months of age relative to older patients. For the threshold of peripheral arterial oxygen saturation ≤ 94% measured by pulse oximetry (SpO2), unadjusted odds ratios for severe illness, severe pneumonia and hospitalization were 6.1 (95% Confidence Interval (CI) 3.9-9.8), 8.5 (4.9-14.6) and 5.9 (3.4-10.3), respectively. CONCLUSION: Pulse oximetry was helpful in identifying children with severe illness in outpatient facilities in PNG. A SpO2 of 94% seems the most discriminative threshold. Considering its affordability and ease of use, pulse oximetry could be a valuable additional tool assisting the decision to admit for treatment.

High coverage of hepatitis B vaccination and low prevalence of chronic hepatitis B in migrant children dictate a new catch-up vaccination strategy.

BACKGROUND: Worldwide coverage of hepatitis B (HB) vaccination is increasing. This should be considered when determining the best strategy for catch-up HB vaccination in migrant children, who rarely have written proof of past immunizations. This study aimed to estimate HB vaccine protection, chronic HB prevalence and to identify determinants of vaccine protection. METHODS: Newly arrived migrant children at Lausanne University Hospital from October 2014 to July 2017 were prospectively enrolled. Children and adolescents aged 1-18 years were approached for inclusion if they had no proof of past vaccinations and accepted a single dose of injected HB vaccine. HB surface antibody (anti-HBs) serology was performed after 4-6 weeks. Anti-HBs ≥100 IU/L were considered consistent with a booster-type antibody response. Patients with anti-HBs <100 IU/L received additional dose(s) of HB vaccine, after exclusion of chronic HB in children with anti-HBs <10 IU/L. Potential determinants of vaccine response were compared between children with and without booster-type response. RESULTS: Two hundred children were available for analysis. Median age was 8.9 years (IQR 4.8-12.9), and 97 (49%) were female. The majority (n = 124, 62%) came from the region classified by the WHO as eastern Mediterranean. One hundred and sixty-one children (81%) had a booster-type antibody response. Only 1 patient (<1%) had chronic HB. In the multivariate analysis, younger age (OR per decreasing-year, 1.28; 95%CI, 1.05-1.57; p = 0.017) and migration from an urban area (OR 1.16; 95%CI, 1.01-1.33; p = 0.043) were the only significant determinants of booster-type response. CONCLUSION: Post-vaccine serology may be used to identify a high proportion of individuals in our pediatric migrant population with previous immunization for HB. Our study also showed extremely low prevalence of chronic HB. No variable could definitively determine the results of serology. Post-vaccine serology represents the most effective strategy in this context of high vaccine coverage.

Clinical signs of hypoxaemia in children aged 2 months to 5 years with acute respiratory distress in Switzerland and Senegal.

BACKGROUND: Hypoxaemia is a predictor of pneumonia-related mortality. WHO published recommendations for oxygen therapy based on clinical signs which state that, when oxygen is plentiful, it should be given to children with central cyanosis, inability to drink, severe chest indrawing, RR >70 breaths/min, grunting with every breath (in young infants) or those who display head nodding. These guidelines, however, are based on a few studies only. AIM: To assess the accuracy of combinations of clinical signs which predict hypoxaemia in pre-school children aged 2 months to 5 years with acute respiratory distress in hospitals in Switzerland and Senegal. METHODS: This observational study was conducted in four emergency units, two in Switzerland and two in Senegal. Patients aged 2 months to 5 years with acute respiratory distress were eligible for inclusion. Clinical signs were compared with transcutaneous blood saturation levels (SaO2). RESULTS: About 111 children were assessed, 67 in Switzerland and 44 in Senegal. The prevalence of hypoxaemia was 13%. Twelve models of combined symptoms were analysed. The WHO model, for when oxygen supply is ample, had the highest diagnostic performance with a sensitivity of 0.93 and a specificity of 0.60. CONCLUSIONS: Clinical signs alone are unreliable for the detection of hypoxaemia. The current WHO model, for ample oxygen supply proved to be the best clinical predictor, although a great number of non-hypoxaemic children were unnecessarily treated because of the low specificity of this model.

Risk behaviours among native and immigrant youths in Switzerland: a cross-sectional study.

QUESTION UNDER STUDY: Switzerland has been receiving migrants of various origins for more than 50 years. The adoption of risk-taking behaviours among migrant youths is unclear. Moreover, when studied, migrant youths are rarely analysed according to whether they are first or second generation, or just young people with mixed origins. The aim of this study was to assess whether there are any differences between first-and second-generation immigrants, youths of mixed origins and their native peers in Switzerland concerning their engagement in risk behaviours. METHODS: A total of 5834 youths from eleven post-mandatory schools in the canton of Fribourg (Switzerland) participated in the baseline survey of the GenerationFRee study, a longitudinal study to assess their lifestyle. Participants were divided by gender and by origin into: (a) natives: Swiss-born youths with Swiss-born parents, (b) first-generation migrants: foreign-born youths with foreign-born parents, (c) second-generation migrants: Swiss-born youths with foreign-born parents, (d) mixed-origin youths: Swiss-born youths with one Swiss-born parent and one foreign-born parent. Participants reported personal, family and school information, and attitudes towards eight risk behaviours. All significant variables at the bivariate level were included in a binary logistic regression. RESULTS: The logistic regression showed that, compared with natives, first-and second-generation migrant boys were less likely to misuse alcohol. Boys of mixed origins were similar to migrants, although at the bivariate level they were more exposed to risk behaviours than were migrants. First-and second-generation migrant girls were less likely to misuse alcohol but three times more likely to be excessive Internet users. Girls of mixed origin were more likely to have their parents not living together and reported antisocial behaviours almost twice more often. CONCLUSIONS: Our findings expose a lower engagement in risk behaviours among migrants. The migrant status in these two groups is clearly buffered if other control variables are considered. Thus, we can affirm that in the present study, migrants are not a high-risk population or not more at risk than the native group. Mixed origin youths showed higher risk behaviours than natives and migrants. Special attention should be given to this specific group, as they may be more vulnerable during adolescence.