Understanding and preventing vaccination errors.

INTRODUCTION: Vaccine-related medication errors can occur at each step of the vaccination process: prescribing, dispensing, preparation, administration, monitoring, transport, and storage. We aimed to describe current knowledge of vaccination-related errors to identify areas for improvement. MATERIAL AND METHODS: We performed a literature review on PubMed, using MeSH terms, from 1998 to 2020 to identify articles that would illustrate vaccine-related medication errors. We developed a questionnaire for health professionals concerning prescribing, dispensing, or administering vaccines via Facebook, and then identified priority areas for information to reduce vaccine-related medication errors. RESULTS: A total of 227 answers were collected from midwives (N = 90), pharmacists or technicians (N = 75), and physicians or interns (N = 62). Practitioners gave wrong answers on live vaccines administered during pregnancy (>10 % of physicians), incorrect acronyms for the DTCaP (diphtheria, tetanus, pertussis, poliomyelitis) vaccine corresponding to branded products (72 % of midwives), lack of marketing authorization knowledge for the influenza vaccine (46 %), duration of vaccine conservation outside of the refrigerator (52 %), or intravenous administration of the rotavirus vaccine (23 %). Most health professionals mentioned the possibility of writing procedures for the various steps of the vaccine process, but only few of them have actually done it (15 % for dispensing/administration versus 61 % for storage). Ten key points for initial or ongoing training of health professionals have been summarized. CONCLUSION: There is partial mastery of vaccine knowledge among health professionals. Our final table presents the most important elements of these results for educating health professionals on potential vaccine-related medication errors.

Use of continuous infusion of clonidine for sedation in critically ill infants and children.

BACKGROUND: Adequate sedation and analgesia are required for critically ill children in order to minimize discomfort, reduce anxiety, and facilitate care. This is commonly achieved through a combination of opioids and benzodiazepines. Prolonged use of these agents is associated with tolerance and withdrawal. Clonidine as an adjunctive sedative agent may reduce sedation-related adverse events. OBJECTIVE: Our first aim was to describe the indication for clonidine administration and its secondary effects in a mixed cohort of critically ill children. Our secondary aim was to measure the consumption of sedatives during two study periods: before and after the use of clonidine in our pediatric intensive care unit (PICU). METHODS: This was a single-center study conducted in a tertiary PICU and encompassed retrospective chart review of patients who received clonidine between November 2013 and April 2015. We collected data on clonidine dosage, duration of administration, indication for the prescription, and potential side effects. We analyzed the total consumption of sedatives over 18 months, before and after the introduction of clonidine in our sedation protocol. RESULTS: A total of patients received clonidine, with a mean age of 2.2 ± 2.8 years. The primary reason for intensive care admission was respiratory failure (48%). The main indication for clonidine administration was increasing requirement for morphine and midazolam (60%). The mean duration of clonidine infusion was 9 ± 7.3 days. Bradycardia and hypotension occurred in five patients (11.6%) and nine patients (21%), respectively. These side effects did not result in any major intervention. Younger age was a risk factor for clonidine-associated bradycardia. We observed a significant decrease in morphine and midazolam consumption with clonidine as a comedication. Compared with the pre-study period, consumption decreased by 19.7% for morphine and by 59% for midazolam (calculated as milligram/admission). CONCLUSION: Continuous infusion of clonidine in critically ill children is safe and effective. Clonidine is a sedative-sparing agent and this can help reduce complications associated with prolonged use of opioids and benzodiazepines.

[Enoxaparin and tinzaparin in pediatrics: Impact of recommendation on prescription quality and anti-Xa levels]. / Énoxaparine et tinzaparine en pédiatrie : impact de recommandations sur la qualité des prescriptions et l'activité anti-Xa.

OBJECTIVES: A protocol has been written and distributed in May 2017 to all prescribers in a pediatric hospital to standardize and to secure the prescriptions of enoxaparin and tinzaparin considered as two high risk medications. The aim of this study is to evaluate the impact of the protocol on those prescriptions in a pediatric population. METHODS: This is a monocentric retrospective study comparing prescriptions of this two low-molecular-weight heparins for patients under 18 years old in 2016 and 2018, thus before and after the protocol redaction. RESULTS: In 2016, 2246 prescriptions of enoxaparin and tinzaparin were analyzed for 627 patients. Among them, 142 (22.6%) patients have had at least one anti-Xa level dosed. On the other hand, in 2018, 2061 prescriptions were written for 628 patients including 96 (15.3%) who have had at least one anti-Xa level dosed. The conformity rate of the first dose in IU/kg/administration of the first enoxaparin prescription goes from 36.3% before protocol to 52.1% after (P=0.03*). Concerning tinzaparin, the conformity rate goes from 69.2% to 83.3%. (P=0.19). The rate of first anti-Xa level in the range 0.4 to 1.2 IU/ml increase between 2016 and 2018 from 27.7% to 43.8% (P<0.001*). CONCLUSION: This protocol enabled to improve the quality of prescriptions in terms of: dosage written in IU/kg/administration, frequency of administration, dilution conformity, and result of the first anti-Xa level. Some efforts must be made in writing the dose in IU not in mg or ml.

[Dermocorticoides and sun exposure: A misunderstanding?] / Dermocorticoïdes et exposition solaire : un malentendu ?

INTRODUCTION: Fear of dermocorticoids (DCs) or corticophobia is based on an overestimation of the risks of actual side effects and on unfounded beliefs such as DCs-induced photosensitivity among community pharmacists. The objective of this study was to assess the community pharmacy teams' fear of dermocorticoids in atopic dermatitis (DA) in sunny weather and its impact on drug use advice. MATERIAL ET METHODS: A questionnaire as a real case (a summer prescription for atopic dermatitis for an 18-month-old child) was posted on Facebook via groups of pharmacists, technicians and students. Data collected concerned the health professional, his or her reluctance to DCs, advice associated with dispensation, detailed concerns about the DC and sun association, and sources of information. RESULTS: In total, 126 participants responded (48.4% pharmacists, 40.5% technicians, 10.3% students): 12% were reluctant to DCs, 36% were reluctant to DCs and considered them photosensitizing, and 51% were not reluctant but considered them photosensitizing. The impact on the patient advice was: a suggestion to stop DC during sun exposure (28%), to stop or limit DC (dose, duration) (43%). Concerns about the association DC/sun were mainly due to UV rays (46%). Sources cited were: monographs (54%), Internet (6%), training courses (13%). CONCLUSION: The false belief of DC/sun incompatibility in DA is strong among pharmacists and impacts on patients' advice. The role of the official team in dispensing dermocorticoids is essential: training and information for professionals helps to fight false information.

[Mydriatic eye drops for children: Analysis of use]. / Collyres mydriatiques en pédiatrie : analyse des pratiques d'utilisation.

Mydriatic eye drops are indicated for ophthalmologic exams (fundus and cycloplegic effect for refraction diagnosis). Their use must be optimal to avoid adverse reactions. This is even more important in pediatrics, because few clinical studies were conducted in this population during drug development. We reviewed the use of mydriatic eye drops, gathering information from the Summary of Product Characteristics (SPC) from the Theriaque® database (CNHIM) and the manufacturers' information, in terms of dose, concentration and volume administered, age limit indications, recommendations for administration, and our local practice. This tool is useful in our hospital for physicians, pharmacists, and nurses but could be also useful for all healthcare providers using mydriatic eye drops for children.

A survey of pharmacists' knowledge and views of biosimilars in Quebec and France.

OBJECTIVE: The objective of this study was to survey pharmacists' knowledge and views of biosimilars in Quebec and France. METHODS: An online and anonymous survey was conducted. The survey was divided into two parts including: (1) ten multiple choice questions on main characteristics that distinguish biosimilars from generic drugs; (2) fifteen statements on biosimilars key issues (interchangeability, immunogenicity risk management…). Pharmacists were asked to indicate their level of agreement to these statements using a 5-item Likert scale. A descriptive statistical analysis of the results was performed. RESULTS: A total of 229 pharmacists answered the survey (141 in Quebec and 88 in France). Pharmacists know the main differences between generic drugs and biosimilars. Viewpoints of pharmacists on biosimilars key issues are alike: nomenclature of biosimilars is essential to avoid confusions with the reference drug; the creation of a list of biosimilar and interchangeable biologic drugs is necessary; responsibilities for immunogenicity risk management should be shared between pharmacists and physicians. However, viewpoints vary regarding the patient informed consent for biologic drugs substitution. CONCLUSION: Knowledge and views of pharmacists about biosimilars in Quebec and in France are alike. Pharmacists should be knowledgeable about the particularities and key issues of biosimilars because they will play a key role for their introduction in clinical practice. They should be aware of the evolution of the legal framework of biosimilars to ensure their safe and optimal use.

Guidelines for proton pump inhibitor prescriptions in paediatric intensive care unit.

Background Stress ulcer prophylaxis (SUP) is recommended in some situations to prevent upper gastrointestinal bleeding and is a component of standard care for patients admitted to the intensive care unit (ICU). Proton pump inhibitors (PPIs), already among the most widely prescribed drug classes, are being increasingly used. Objective To describe PPI prescribing patterns and their changes after the dissemination of guidelines. Setting Paediatric ICU (PICU), Robert-Debré Teaching Hospital, Paris, France, which admits about 800 patients annually, from full-term neonates to 18-year-olds. Method Prospective observational study with two 6-week observation periods (July-August and September-October, 2013), before and after dissemination in the PICU of PPI prescribing guidelines. Main outcome measure Changes in PPI prescribing patterns (prevalence, dosage, and indication) after the guidelines. Results The number of patients admitted to the PICU was 77 (mean age 4.6 years [range 1 day-18 years]) before and 70 (mean age 3.8 years [range 1 day-17 years]) after the guidelines. During both periods, SUP was the most common reason for PPI prescribing. The proportion of patients prescribed PPIs dropped significantly, from 51% before the guidelines to 30% after the guidelines (p < 0.001). Mean daily dosage also decreased significantly, from 1.5 mg/kg/(range 0.5-4.4) to 1.1 mg/kg (range 0.7-1.8) (p < 0.002). None of the patients experienced upper gastrointestinal bleeding during either period. Conclusion Off-label PPI prescribing for SUP was common in our PICU. The introduction of guidelines was associated with a significant decrease in PPI use and dosage. This study confirms that guidelines can change PPI prescribings patterns in paediatric practice.

[Consensus validation of a tool to identify inappropriate prescribing in pediatrics (POPI)]. / Validation par consensus d'un outil d'identification de prescriptions inappropriées en pédiatrie (POPI).

OBJECTIVE: Medication errors including inappropriate prescriptions and drug omissions are one of the causes of adverse drug events in children. Our aim was to develop a preliminary screening tool to detect omissions and inappropriate prescriptions in pediatrics based on French and international guidelines. MATERIEL AND METHODS: Disease classification was based on the prevalence rate of pathology and hospital statistics. The criteria were obtained by reviewing many French and international references. The Delphi consensus technique was used to establish the content validity of POPI. The level of agreement and the proposals of healthcare professionals was noted on a nine-point Likert scale. RESULTS: The criteria were categorized according to the main physiological systems (gastroenterology, respiratory infections, pain, neurology, dermatology, and miscellaneous). They were distributed to 16 French pediatric panelists (eight pharmacists, eight pediatricians who were hospital-based [50%] or working in the community [50%]). After two rounds of the Delphi process, 101 of 108 criteria were chosen with strong consensus (76 inappropriate prescriptions and 25 omissions). CONCLUSIONS: POPI is the first screening tool to detect inappropriate prescriptions and omissions in pediatrics. It is now necessary to conduct a prospective study to determine inter-rater reliability and the tool's detection capacity.

Evaluation of frequency of paediatric oral liquid medication dosing errors by caregivers: amoxicillin and josamycin.

OBJECTIVE: To study reconstitution and preparation dosing errors of liquid oral medications given by caregivers to children. METHODS: A prospective observational study was carried out in the departments of general paediatrics and emergency paediatrics at the Robert-Debré Children's University Hospital. An interview with caregivers involved (1) practical reconstitution and preparation of an oral liquid medication from a prescription drawn at random (amoxicillin (Clamoxyl, dosing spoon) or josamycin (Josacine, dose-weight pipette)) and (2) a questionnaire about their use. RESULTS: One hundred caregivers were included. Clamoxyl and Josacine were incorrectly reconstituted in 46% (23/50) and 56% (28/50) of cases, respectively, with a risk of underdosing of Clamoxyl (16/23) and overdosing of Josacine (23/28). Dose preparation with the dosing spoon was incorrect in 56% of cases, and in 10% of cases with the dose-weight pipette. Female sex, native French speaker, and age were significantly associated with correct reconstitution. Male sex and medication were significantly associated with correct preparation. CONCLUSIONS: This study highlights the high incidence of errors made by caregivers in reconstituting and preparing doses of these liquid oral medicines, which are associated with considerable risks of over- and underdosing. Factors associated with these errors have been identified which could help health professionals to optimise their strategy for educating families about the use of liquid oral medications and the need to check that they understand these instructions.

[Attitudes and experiences of off-label prescribing among paediatricians in a French university teaching hospital]. / Attitudes et expériences des médecins face à la prescription hors autorisation de mise sur le marché dans un hôpital pédiatrique français.

PURPOSE: The lack of drugs specifically assessed for paediatric use results in a widespread off-label drug use. The aim of this work is to identify experiences and attitudes towards paediatrics off-label prescribing in a university teaching paediatric hospital. METHODS: A questionnaire of 24 items was sent by email to 409 paediatricians in February 2013. DATA COLLECTED: frequency of off-label prescribing, sources of information, concern about safety and adverse events with off-label drug use, proportion of parents informed and order with "off-label" mention. RESULTS: Eighty questionnaires were returned. Over 81% of responders were familiar with the concept of off-label drugs prescribing. The most common reason given for off-label prescribing was for a younger age (74%) and for another indication (28%). They (79%) used a colleague's opinion and the most important sources of information used were the literature (72%), international guidelines (62%), the French National Formulary Vidal (56%) and national guidelines (46%). Although 54% of responders expressed concerns about safety about off-label prescription, only 29% had observed adverse event with off-label drug use. Two third of respondents informed the parents but off-label prescribing cannot be always explained to family. Many respondents (81%) did not write "off-label" mention on prescription. However, 52% stated that they would be willing to undertake off-label prescription monitoring with a local observatory. CONCLUSION: Our study describes the perceptions and attitudes of paediatrician's regarding off-label prescribing for children. Patient information and documentation in the patient file remain incomplete. The prospective collection of off-label prescription will locally be performed.

NSAIDs in paediatrics: caution with varicella!

Anti-inflammatory drugs have been suspected on several occasions to have promoted development of bacterial infection among varicella patients. Some countries have not implemented childhood varicella vaccination. Three cases in our hospital suggested the predisposing role of NSAIDs in varicella patient deterioration. Open access to these drugs widely increases their use and patient information should be continually provided in the medical offices and at dispensing pharmacy counters. Taking account of the benefit/risk balance and applying the simple precautionary principle, it would be appropriate to be cautious about the use of NSAIDs in the paediatric population.

Development of a consensus-base list of criteria for prescribing medication in a pediatric population.

BACKGROUND: Although many people are involved in the optimal use of a medication within this process, the use of medications carries risks of adverse events, which are greater in the pediatric population because of many factors. OBJECTIVE: In this context, our aim was to develop a consensus-based list of criteria for the safety of the pediatric medication-use process or circuit (referred to from now on as the CIRCUS tool: CIRcuit-of-Child-drug-USe). SETTING: Multicenter with a trio of experts from eight university hospitals. METHODS: A literature search (1998-2013) was conducted in order to identify the different safety practice domains for the pediatric medication use process. Twenty-six safety practice domains were identified and 48 compliance criteria were formulated. In order to reach a consensus on the most relevant compliance criteria for safety practices, an international 24 French-speaking multidisciplinary panelists (8 doctors, 8 pharmacists and 8 nurses) selected to represent a broad range of experience levels and specialties took part in a two round Delphi survey which was conducted between March and July 2013. Each panelist was asked to rate each proposed criterion on a 1-9 Likert scale in order to show their level of agreement (i.e. 1 reflects strong disagreement and 9 reflects strong agreement). MAIN OUTCOME MEASURE: Development of a consensus-base list for safety practices in pediatrics. RESULTS: Twenty-two of the 24 professionals invited to take part in this survey (92% participation rate) completed the two Delphi rounds. At the end of the two Delphi rounds, a total of 38/48 (79%) safety practice compliance criteria achieved consensus by the panelists. The criteria were grouped into 23 domains. CONCLUSION: This study presents the development of a self-assessment tool for safety practices in the pediatric drug-use process using a Delphi method. This tool may be used in order to record and compare the prevalence of best safety practices in the pediatric drug-use process.

[Evaluation of the impact of a training program on vitamin K antagonists (VKA) implemented by pharmacy students aiming at improving the knowledge of patients receiving vitamin K antagonists during their hospital clinical training course]. / Évaluation de l'impact d'un programme de formation aux antagonistes de la vitamine K (AVK) pour les étudiants en pharmacie sur l'amélioration des connaissances des patients traités par AVK pris en charge au cours de leur stage clinique hospitalier.

INTRODUCTION: We developed a training program for pharmacy students aiming at supporting patients receiving vitamin K antagonists (VKAs). The objective was to estimate how the program impacts VKA-treated patient knowledge acquisition and/or improvement on their anticoagulant treatment. METHOD: Using dedicated tools, pharmacy students received education on VKA treatment. Once appointed to clinical wards of Assistance publique-Hôpitaux de Paris, they were in charge of evaluating patient's knowledge on VKA treatment before and after training. Evaluation was conducted using a face-to-face standardized interview (14-item questionnaire). A global score was calculated for each patient. An univariate and multivariate analysis was performed to identify potential variables influencing score result. RESULTS: One hundred and seventy VKA-treated patients were recruited in seven hospitals for evaluation of their knowledge on VKA treatment and on clinical at risk situations. Before intervention, patients obtained an average score of 12.3±3.2 (maximum: 18). Factors significantly associated with the score were possession of a VKA information booklet, VKA treatment duration, treatment initiation and age. Fifty-two patients with a low score were further trained by the pharmacy student. After intervention, their initial score was improved significantly, from 9.9±3.3 to 13.5±2.3 (P<0.0001). DISCUSSION AND CONCLUSION: Increasing patient knowledge is a way to decrease the rate of adverse effects. This study demonstrates that patients with primary poor knowledge improved it significantly thanks to pharmacy students' intervention. This may contribute to lower the VKA-associated risk of adverse events and consequently to the improvement of patients quality of life and healthcare expenditures.

[Determinants of the evolution of hospital pharmacy in France and Quebec: Perception of hospital pharmacists]. / Déterminants de l'évolution de la pharmacie hospitalière en France et au Québec : perception de pharmaciens hospitaliers.

BACKGROUND: Hospital pharmacy practice has evolved differently between France and Quebec. While this development is part of broader systems, French and Quebec hospitals have undergone significant changes over the years to cope with challenges, among others, the economic and demographic realities. PURPOSE: The main objective is to evaluate and compare the perception of French and Quebec hospital pharmacists about the factors that have contributed to the evolution of pharmacy practice in their respective context. METHODS: This is a descriptive cross-sectional study. The study focuses on a sample of experienced hospital pharmacists in France and Quebec. We targeted a convenience sample of 50 respondents per country. An online questionnaire with 15 pharmaceutical activities to which are connected nine factors that may have influenced the implementation of each of these activities in each country was used. The mean score was calculated for each of the nine factors for each activity. The perception of French and Quebec hospital pharmacists was then compared. A P value less than 0.05 was considered statistically significant. RESULTS: Two hundred and sixty hospital pharmacists were directly contacted in France and 79 in Quebec. Seventy-eight French pharmacists and 77 Quebec pharmacists responded to the survey, that is a respective response rate of 30% and 97%, respectively. The hierarchy of factors that contributed to the evolution of pharmacy practice was similar between the two countries, legislative and regulatory factors as well as the concern for risk management and quality dominate; scientific human, economic factors and training have a relatively similar position. For cons, the news factor (6th in France against the 10th position in Quebec) and the academic factor (10th position in France against the 6th position in Quebec) obtained inverse scores between France and Quebec. CONCLUSION: There are few data on the determinants of the evolution of hospital pharmacy in France and Quebec. The hierarchy of factors that contributed to the evolution of pharmacy practice is similar between the two countries, although differences of rank were found for the news and academic factors. Further studies are needed to better understand the factors that influence the evolution of pharmacy practice in health care institutions.

[Treatment of scabies and Ascabiol(®) supply disruption: what about the pediatric population?]. / Traitement de la gale et rupture d'Ascabiol(®) : quid de la population pédiatrique ? Gale chez l'enfant et rupture d'Ascabiol(®)

Scabies is a disease in steady increase in Île-de-France region. Standard treatment, Ascabiol(®) (benzyl benzoate/sulfiram), is back-order for several months and its return remains uncertain. Facing this drug shortage, French Drug Agency (ANSM) has imported a drug from Germany, Antiscabiosum 10 % (benzyl benzoate), to treat patients having contraindications for other scabicides available in France (ivermectin, esdepallethrine). However, infants less than 1 year (<15 kg) and asthmatics infants have no alternative treatment. A multidisciplinary workgroup explored the various existing therapeutic alternatives in France and worldwide. From ANSM's recommendations and group's experience, a decision algorithm was proposed for treating patients. However, pediatric context implied the use of off-label drugs. Proposed treatments widely known by practitioners, prescriptions-types, dose, modalities of use and dispensation, and flyers to patients were realized to optimize treatment efficacy.

[Is pediatrics excluded from pharmaceutical innovation?]. / La pédiatrie, toujours exclue de l'innovation pharmaceutique ?

OBJECTIVE: The development of therapeutic strategies for children depends unequivocally on the commercial launching of drugs with pediatric indications. New therapeutic drugs differ from one country to another, particularly considering children. The objective of this study was to compare access to new drugs by children in France (FR) and Canada (CA). MATERIAL AND METHODS: Retrospective study comparing newly marketed drugs in FR and CA from 1 January to 31 December 2009. Data were collected through independent sources: (HAS, Thériaque, ANSM for FR and CEPMB, BDPP for CA). RESULTS: Respectively, 37 and 30 new drugs were put on the market in 2009 in FR and CA. Among them, 38% (n=14) and 27% (n=8) had a pediatric indication. For 91% (FR) and 95% (CA) of the drugs not indicated for children, no clinical study has been planned to define pediatric indications. All the drugs (100%) with pediatric indications presented dosages based on age or weight, but it should be noted that two drugs had no form adapted to children. Fifty-seven percent of these drugs were first available on the French market and later on the Canadian market, with a median delay of 8.5months. CONCLUSION: This study highlights the obvious lack of pediatric drugs contributing to large prescriptions of off-label drugs for children, with no dosage or adapted pharmaceutical form for this population.

[Prioritization of healthcare programs by pharmacy students from France and from Quebec, according to the perceived impact of a decentralized pharmacist]. / Hiérarchisation des programmes de soins par des étudiants en pharmacie de France et du Québec selon la perception de l'impact de la présence de pharmaciens dans les services de soins.

INTRODUCTION: Healthcare decision makers need to establish priorities and their decisions must be justified. However, few data is available on the prioritization process of the healthcare programs that should benefit from decentralized pharmacists. PATIENTS AND METHODS: The main objective was to prioritize healthcare programs according to the perceived impact of a decentralized pharmacist for outpatient and inpatient clienteles. The secondary objective was to compare the prioritization made by pharmacy students from two Quebec universities and from one French university. Two different approaches were developed (perceived impact according to three indicators and according to the global impact). RESULTS: The majority of healthcare programs with a high evidence based literature quality score (5/6 outpatient programs and 5/8 inpatient programs) were highly prioritized by at least two out of three cohorts. The median rank that was attributed for each healthcare program was significantly different between the three cohorts for 8/17 (47%) of outpatient programs and for 10/18 (56%) of inpatient programs. DISCUSSION: A higher rank was attributed to healthcare programs when the evidence based literature quality score was high. The prioritization was also influenced by the difference in pharmaceutical practice between France and Quebec (e.g. sterilization and medical devices in France). CONCLUSIONS: This study presented two approaches for the prioritization of healthcare programs that should benefit from a decentralized pharmacist, according to students from France and from Quebec.

Impact of implementing French antibiotic guidelines for acute respiratory-tract infections in a paediatric emergency department, 2005-2009.

Acute respiratory tract infections (ARTIs) are the main reason for antibiotic prescription in children. In 2005, the French Drug Agency published guidelines to minimise inappropriate use of antibiotics for ARTI. The purpose of this study was to assess the impact of implementing these guidelines in a paediatric emergency department. We retrospectively analysed data collected prospectively in a French paediatric emergency department from November 2005 (date of guideline implementation) to October 2009. For each child diagnosed with ARTI, we collected age, diagnosis, and prescribed antibiotics. We computed antibiotic prescription rates in the study population. During the study period, 53,055 children were diagnosed with ARTI and 59% of the 22,198 antibiotic prescriptions given at discharge were related to ARTI. The proportion of ARTI patients given antibiotic prescriptions fell from 32.1% during the first year to 21% in year 4 (p<10(-4), Cochran-Armitage test). Amoxicillin-clavulanic acid and amoxicillin accounted for 50% and 34% of antibiotic prescriptions for ARTI, respectively. French antibiotic guidelines led to significant decreases in antibiotic prescription for ARTI in our paediatric emergency department.