Compliance with the pregnancy prevention program among women initiating isotretinoin treatment between 2014 and 2021: A nationwide cohort study on the French Health Data System (SNDS).

BACKGROUND: Despite the French pregnancy prevention program (PPP), a considerable number of pregnancies are potentially exposed to oral isotretinoin. New measures were taken by the French Medicines Agency, including the restriction of initial isotretinoin prescriptions to dermatology specialists in May 2015 and a new information campaign on teratogenicity in January 2019. OBJECTIVES: The aims were to: describe, between 2014 and 2021, compliance with PPP recommendations: isotretinoin use as a second-line treatment, first prescription by a dermatology specialist, monthly prescription renewal and pregnancy testing (PT); assess the effect of the 2015 and 2019 measures on PT compliance; and identify the determinants of PT noncompliance. METHODS: A retrospective cohort study was conducted among women aged 11-50 years initiating isotretinoin between 2014 and 2021 using the French Health Data System. PT compliance corresponded to pregnancy test completion and specific delays between prescription and dispensation. Time series analyses were performed to evaluate the effect of the 2015 and 2019 measures on PT compliance, and log-binomial and Poisson multivariate regression models were used to identify the determinants of PT noncompliance. RESULTS: Isotretinoin was prescribed as a second-line treatment in 64% of initiations, mainly by dermatology specialists (92%). A new monthly prescription was observed in 98% of dispensations. PT compliance reached 61%, 72% and 25% at initiation, renewals and end of treatment, respectively. The 2015 measure was associated with better PT compliance at initiation and renewals. The 2019 measure had no significant effect on PT compliance at the initiation or end of treatment but was associated with a decrease in PT compliance at renewals. Age, low socioeconomic level, initiation by a nondermatology specialist and during summer were associated with PT noncompliance. CONCLUSIONS: Understanding factors associated with PT noncompliance could help to target specific subpopulations of women treated with isotretinoin.

Patients' productivity losses and informal care costs related to ischemic stroke: a French population-based study.

BACKGROUND AND PURPOSE: Large societal costs of stroke should not be ignored. We aimed to estimate patients' productivity losses and informal care costs during the first year after ischemic stroke. METHODS: A cross-sectional survey was performed within the STROKE69 regional population-based cohort study. At 1 year post-stroke, each patient and the corresponding main informal caregiver received questionnaires followed by a telephone interview if necessary. Time losses were valued using the human capital approach and proxy good method for patients with and without a professional activity, respectively. RESULTS: Among the 222 patients with ischemic stroke (58% men; mean age 68 years; and 86% with a modified Rankin Scale (mRS) score of <3 at 3 months), 54%, 32%, and 25% received informal, formal, and both cares, respectively. Among the 108 main informal caregivers, 63% were women, 74% lived with the patient, and 57% were retired or unemployed. The mean cost of productivity losses was estimated at €7589 ± €12 305 per patient in the first post-stroke year with 5.4%, 71.2%, and 23.4% of these being attributed to presenteeism, absenteeism, and leisure time, respectively. Informal care was given at an average of 25 h/week. The annual mean estimated total cost of informal care was €10 635 per caregiver. CONCLUSIONS: Informal care and productivity losses of patients with ischemic stroke during the first post-stroke year represent a significant economic burden for society comparable to direct costs. These costs should be included in economic evaluations with the adoption of a societal perspective to avoid underestimating the societal stroke economic burden.

Repeated bullying at the workplace in medical students and young doctors: the MESSIAEN national study.

Despite clues indicating high Bullying at the Work Place (BWP) rates in French hospitals, there has been no quantitative study so far. To determine the prevalence of repeated BWP in a national sample of French young physicians; its risk factors, and the mental health consequences of BWP. The study is a cross-sectional observational epidemiological national study addressed to young physicians. The online internet anonymous questionnaire was elaborated according to previous studies exploring BWP. In addition, we explored the quality of initial training. BWP was defined according to the French legal definition. Mental health was assessed by Hamilton Anxiety and Depression scale, psychotropic drug consumption and psychotherapy follow-up. A Structured Equation Modeling (SEM) was carried out to confirm our theoretical model. 2003 participants of the 37 French medical faculties were included. At least one history of BWP was identified in 41.7% of the participants. The SEM model showed good fit (RMSEA = 0.025, CFI = 0.93, TLI = 0.92, WRMR = 1.285). In the SEM model, BWP was associated with age and number of monthly night shifts and weekly worked hours. Obstetric gynecology, psychiatry, surgery, and medical specialties and low-quality initial training were associated with higher risk of BWP. BWP was associated with increased anxiety and depressive symptoms, daily antidepressant and anxiolytic consumption, and psychotherapy follow-up. Decreasing worked hours and night shifts and improving the quality of the initial training may help preventing BWP among medical students and young physicians. Obstetric gynecology, surgical and medical specialties, and psychiatry should be targeted with a focus on developing prevention programs.

Short and long-term impact of four sets of actions on acute ischemic stroke management in Rhône County, a population based before-and-after prospective study.

BACKGROUND: Optimizing access to recanalization therapies in acute ischemic stroke patients is crucial. Our aim was to measure the short and long term effectiveness, at the acute phase and 1 year after stroke, of four sets of actions implemented in the Rhône County. METHODS: The four multilevel actions were 1) increase in stroke units bed capacity and development of endovascular therapy; 2) improvement in knowledge and skills of healthcare providers involved in acute stroke management using a bottom-up approach; 3) development and implementation of new organizations (transportation routes, pre-notification, coordination by the emergency call center physician dispatcher); and 4) launch of regional public awareness campaigns in addition to national campaigns. A before-and-after study was conducted with two identical population-based cohort studies in 2006-7 and 2015-16 in all adult ischemic stroke patients admitted to any emergency department or stroke unit of the Rhône County. The primary outcome criterion was in-hospital management times, and the main secondary outcome criteria were access to reperfusion therapy (either intravenous thrombolysis or endovascular treatment) and pre-hospital management times in the short term, and 12-month prognosis measured by the modified Rankin Scale (mRS) in the long term. RESULTS: Between 2015-16 and 2006-7 periods ischemic stroke patients increased from 696 to 717, access to reperfusion therapy increased from 9 to 23% (p < 0.0001), calls to emergency call-center from 40 to 68% (p < 0.0001), first admission in stroke unit from 8 to 30% (p < 0.0001), and MRI within 24 h from 18 to 42% (p < 0.0001). Onset-to-reperfusion time significantly decreased from 3h16mn [2 h54-4 h05] to 2h35mn [2 h05-3 h19] (p < 0.0001), mainly related to a decrease in delay from admission to imaging. A significant decrease of disability was observed, as patients with mild disability (mRS [0-2]) at 12 months increased from 48 to 61% (p < 0.0001). Pre-hospital times, however, did not change significantly. CONCLUSIONS: We observed significant improvement in access to reperfusion therapy, mainly through a strong decrease of in-hospital management times, and in 12-month disability after the implementation of four sets of actions between 2006 and 2016 in the Rhône County. Reducing pre-hospital times remains a challenge.

[Algorithms to identify chronic inflammatory rheumatism and psoriasis in medico-administrative databases: A review of the literature]. / Algorithmes d'identification des rhumatismes inflammatoires chroniques et du psoriasis dans les bases médico-administratives : revue de la littérature.

BACKGROUND: We aimed to describe and discuss the algorithms used to identify chronic inflammatory rheumatisms and psoriasis in medico-administrative databases. METHODS: We performed a literature review on the Medline database of articles published up to 31 January 2018. Our inclusion criteria were: original articles using medico-administrative databases in accordance with the International Classification of Diseases, version 10 (ICD-10) and concerning rheumatoid arthritis (RA) or ankylosing spondylitis (AS) or psoriatic arthritis (PsoA) or Psoriasis (Pso). Our exclusion criteria were: letters to the editor, commentaries on published articles, studies using codes other than those of the ICD or a previous version. RESULTS: Out of the 590 articles identified, 37 studies were included. Concerning RA (n=10), all studies used the M05 code, associated with the M06 code in six studies. The remaining four studies specifically targeted codes M06.0, M06.2, M06.3, M06.8, M06.9, and two of them also used code M12.3. For AS (n=8), 7 studies used the M45 code, while only one study used M45.9, M46.1 or M46.8. For Pso (n=17), all studies used the L40 code and/or at least two dispensations of vitamin D. Concerning PsoA (n=13), all studies used the same codes: M07.0, M07.1, M07.2, M07.3. CONCLUSION: We recommend using codes M05 and M06 rather than M06.1 and M06.4 for RA, M45 for AS, the algorithm L40 and/or two dispensations of topical vitamin D for psoriasis, and codes M070 to M073 to identify PsoA patients in medico-administrative databases.

Are there socio-economic inequities in access to reperfusion therapy: The stroke 69 cohort.

BACKGROUND AND PURPOSE: Low socio-economic status of individuals has been reported to be associated with a higher incidence of stroke and influence the diagnosis after revascularization. However, whether it is associated with poorer acute stroke management is less clear. To determine whether social deprivation was associated with a poorer access to reperfusion therapy, either intravenous thrombolysis (IVT) and/or endovascular thrombectomy (EVT) in a population-based cohort. METHODS: Over a 14-month period, all consecutive adult patients admitted to any emergency department or a comprehensive or primary stroke center (CSC/PSC) of the Rhône county with a confirmed ischemic stroke were included. The socioeconomic status of each patient was measured using the European Deprivation Index (EDI). The association between EDI and access to reperfusion therapy was assessed in univariate and multivariate logistic regression analyses. RESULTS: Among the 1226 consecutive IS patients, 316 (25%) were admitted directly in a PSC or CSC, 241 (19.7%) received a reperfusion therapy; 155 IVT alone, 20 EVT alone, and 66 both therapies. Median age was 79 years, 1030 patients had an EDI level of 1 to 4, and 196 an EDI of 5 (the most deprived group). The most deprived patients (EDI level 5) did not have a poorer access to reperfusion therapy compared to all other patients in univariate (OR 1.22, 95%CI [0.85; 1.77]) nor in multivariate analyses (adjOR 0.97, 95%CI [0.57; 1.66]). CONCLUSIONS: We did not find any significant association between socioeconomic deprivation and access to reperfusion therapy. This suggests that the implementation of EVT was not associated with increased access inequities.

[Exposure to professional violence by young physicians in the hospital: MESSIAEN national study]. / Exposition aux violences professionnelles à l'hôpital chez les jeunes médecins : l'étude nationale MESSIAEN.

BACKGROUND: Hospital professional violence is defined as hostile and aggressive behavior exerted by health professionals on other health professionals. No quantitative study has been carried out to date on French hospital professional violence among young physicians, while recent qualitative studies have suggested a potential high frequency. The main objective was to determine the prevalence of exposure of young doctors to hospital violence. The secondary objective was to determine their characteristics and consequences as well as to determine if students and young physicians (resident and young MD) differed. METHODS: The study was a national cross-sectional observational epidemiological study that included 4th-year medical students and young physicians (MD for less than 2 years). Thirty-seven French faculties of medicine were contacted for email recruitment of participants. Social networks were used to increase the visibility of the study. The questionnaire was developed after exhaustive review of the international literature dealing with professional violence in hospitals, its characteristics and its consequences in terms of mental health, addiction, personal and professional life. The report of these events was also explored. RESULTS: In total, 2003 participants have been included. More than nine out of ten participants were exposed to hospital violence at least once and nearly 42% to moral harassment as defined by the French law. This violence does not differ between the students and the residents/young MDs, suggesting that working time in the hospital does not seem to affect this risk. Nearly 80 % of interns and young MDs reported working more than the legal time. The perpetrators of violence include in almost all cases at least one man, often a senior doctor, but students reported the presence of at least one woman among the perpetrators in ¾ of cases. The victims are as often men as women. Compared to the undergraduate medical students, residents and young MDs more frequently reported poor outcomes on their mental health, addictive behavior, personal and professional lives. The majority of victims reported the event to a peer but fewer than 10% to the head of the department, a professor or an instance that could have acted. In almost all cases, participants reported the continuation of abusive behavior after the event. In total, 42% of students think that this is simple part of medical studies that they must endure. CONCLUSION: These results suggest the need to develop specific information and prevention programs for professional hospital violence in France.

Interventions to improve osteoporosis care: a systematic review and meta-analysis.

Osteoporosis (OP) is a major public health concern, but still OP care does not meet guidelines. Interventions have been developed to improve appropriate OP management. The objective of the present study was to systematically review the current literature to ascertain the efficacy of interventions to improve OP care and characterize interventions taking into account elements related to their potential cost and feasibility. Studies published from 2003 to 2018 were retrieved from PubMed/MEDLINE, Science Direct, Web of Science, Cochrane, and Wiley Online Library databases. Screening of references and quality assessment were independently performed by two reviewers. We classified interventions into three types according to the target of the intervention: health system (structural interventions), healthcare professional (HCP), and patient. Meta-analysis was performed by type of intervention and their effect on two outcomes: prescription of BMD measurement and prescription of OP therapy. A total of 4268 records were screened; 32 studies were included in the qualitative analysis and 29 studies in the quantitative analysis. Structural interventions strongly and significantly improved prescription of BMD measurement (OR = 9.99, 95% CI 2.05; 48.59) and treatment prescription (OR = 3.82, 95% CI 2.16; 6.75). The impact of HCP-centered interventions on BMD measurement prescription did not reach statistical significance (OR = 2.19, 95% CI 0.84; 5.73) but significantly improved treatment prescription (OR = 3.82, 95% CI 2.16; 6.75). Interventions involving patients significantly improved the prescription of BMD measurement (OR = 2.16, 95% CI 1.62; 2.89) and treatment prescription (OR = 1.70, 95% CI 1.35; 2.14). Interventions to improve OP management had a significant positive impact on prescription of BMD measurement but a more limited impact on treatment prescription.

Cost-effectiveness of stent-retriever thrombectomy in large vessel occlusion strokes of the anterior circulation: Analysis from the French societal perspective.

OBJECTIVES: To determine the cost-effectiveness of stent retriever thrombectomy (SRT) added to standard of care (SOC) in large vessel occlusion (LVO) strokes, adopting the French societal perspective given the lack of published studies with such perspective. METHODS: We developed an hybrid model (decision tree until one year post-stroke followed by a Markov model from one year onward). The time horizon was 20 years. We calculated transition probabilities across the modified Rankin Scale (mRS) based on a published meta-analysis. The main outcome measure was quality adjusted life-years (QALYs) gained. Resources and input costs were derived from a literature search. We calculated the incremental cost-effectiveness ratio (ICER) expressed as cost/QALY. We used 1-way deterministic and probabilistic sensitivity analysis (PSA) to evaluate the model uncertainty. RESULTS: In the base-case, adding SRT to SOC resulted in increased effectiveness of 0.73 QALY while total costs were reduced by 3,874€ (ICER of -5,400€/QALY). In the scenario analysis adopting the French healthcare system perspective, the ICER was 4,901€/QALY. Parameters the most influential were the relative risks of SRT over SOC for 90-days mortality and for 90-days mRS 0-2, and the time horizon. PSA showed the 95% confidence interval of the ICER was -21,324 to 4,591€/QALY, with SRT having 85.5% chance to be dominant and 100% to be cost-effective at a threshold of 50,000€/QALY. CONCLUSION: SRT was dominant from a French societal perspective, from 9 years post-stroke onwards. Cost-effectiveness of SRT added to SOC becomes undisputable with evidences from payer and societal viewpoints.

Stent retriever thrombectomy for acute ischemic stroke: A systematic review and meta-analysis of randomized controlled trials, including THRACE.

BACKGROUND AND PURPOSE: Endovascular thrombectomy has become the reference therapy for patients with large vessel occlusion (LVO). However, no meta-analysis including the THRACE Trial has yet been reported. Thus, the present review assessed the outcomes of stent retriever thrombectomy added to medical care compared with medical care alone in LVO patients. MATERIALS AND METHODS: A systematic review was conducted of all randomized controlled trials (RCTs) examining stent retrievers added to medical care vs medical care alone in the MEDLINE, Embase and Web of Science databases. Meta-analyses of 90-day functional outcomes and mortality, and the occurrence of symptomatic intracranial hemorrhage (sICH), with thrombectomy plus medical care vs medical care alone were performed. RESULTS: Six multicenter RCTs involving 1673 patients were included. Successful recanalization (modified thrombolysis in cerebral ischemia grades 2b-3) was seen in 71% of patients (95% CI: 62-79%) after thrombectomy. These patients also had significantly higher rates of 90-day functional independence (mRS scores 0-2) compared with those receiving medical care only (OR: 2.14, 95% CI: 1.72-2.67; P<0.00001), as well as excellent outcomes (mRS scores 0-1, OR: 2.05, 95% CI: 1.58-2.67; P<0.00001). Also, the rate of functional independence was higher (OR: 2.39, 95% CI: 1.88-3.04; P<0.00001) in the subgroup analysis without the THRACE Trial. The effect of endovascular therapy on 90-day mortality was inconclusive (OR: 0.82, 95% CI: 0.62-1.07; P=0.15), and there was no increased occurrence of sICH (OR: 1.11, 95% CI: 0.66-1.88; P=0.70). CONCLUSION: Stent retriever thrombectomy added to medical care improved 90-day functional outcomes compared with medical care alone with no impact on mortality and risk of sICH in LVO patients.

Prevalence of drug-related problems associated with direct oral anticoagulants in hospitalized patients: a multicenter, cross-sectional study.

WHAT IS KNOWN AND OBJECTIVE: The complex dose regimens of the direct-acting oral anticoagulants (DOAC) make their appropriate prescribing highly challenging. Inappropriate prescribing of the DOAC remains poorly addressed. We studied the patterns of DOAC prescription and estimated the prevalence of drug-related problems (DRPs) associated with their use. METHODS: A cross-sectional study was conducted using data from medical records system of the Lyon teaching hospitals. DRPs, identified among patients who received a DOAC, between 1 January 2010 and 31 July 2013, were categorized according to the Pharmaceutical Care Network Europe Classification System. The prevalence of hospital stays with a DRP was estimated, and a subgroup analysis according to DOAC and their indication for use was provided. Clinical outcomes were not assessed. RESULTS: Of the 4154 hospital stays with at least one DOAC administration [3412 patients; median age (range): 71 years (14-98), 57% female], 70·8% were excluded from the analysis mainly due to missing information for renal function and/or patient weight. Of the 1188 hospital stays that were screened, 100 DRPs were identified (prevalence 8·4%; 95% CI, 6·8-10·0). The highest prevalence was found among patients who received rivaroxaban for atrial fibrillation (14·6%; 95% CI, 10·7-18·5). A too low drug dose was the most frequent DRP (n = 56; 4·7%), followed by a too high drug dose (n = 37; 3·1%), contraindication (n = 5; 0·4%), and pharmacokinetic problem requiring dose adjustment (n = 2; 0·2%). WHAT IS NEW AND CONCLUSION: Drug-related problems associated with the DOACs occur quite commonly among hospitalized patients. Although these DRPs were considered to be of minor severity, prescribing protocols to support better prescribing should be disseminated to reduce the risk to patients. Renal function and body weight data should be mandatory on prescriptions to allow cross-checking.

[Algorithms for the identification of hospital stays due to osteoporotic femoral neck fractures in European medical administrative databases using ICD-10 codes: A non-systematic review of the literature]. / Algorithmes d'identification des séjours pour fracture du col du fémur d'origine ostéoporotique dans les bases médico-administratives européennes utilisant la CIM-10 : revue non systématique de la littérature.

BACKGROUND: Osteoporotic hip fractures (OHF) are associated with significant morbidity and mortality. The French medico-administrative database (SNIIRAM) offers an interesting opportunity to improve the management of OHF. However, the validity of studies conducted with this database relies heavily on the quality of the algorithm used to detect OHF. The aim of the REDSIAM network is to facilitate the use of the SNIIRAM database. The main objective of this study was to present and discuss several OHF-detection algorithms that could be used with this database. METHODS: A non-systematic literature search was performed. The Medline database was explored during the period January 2005-August 2016. Furthermore, a snowball search was then carried out from the articles included and field experts were contacted. The extraction was conducted using the chart developed by the REDSIAM network's "Methodology" task force. RESULTS: The ICD-10 codes used to detect OHF are mainly S72.0, S72.1, and S72.2. The performance of these algorithms is at best partially validated. Complementary use of medical and surgical procedure codes would affect their performance. Finally, few studies described how they dealt with fractures of non-osteoporotic origin, re-hospitalization, and potential contralateral fracture cases. CONCLUSIONS: Authors in the literature encourage the use of ICD-10 codes S72.0 to S72.2 to develop algorithms for OHF detection. These are the codes most frequently used for OHF in France. Depending on the study objectives, other ICD10 codes and medical and surgical procedures could be usefully discussed for inclusion in the algorithm. Detection and management of duplicates and non-osteoporotic fractures should be considered in the process. Finally, when a study is based on such an algorithm, all these points should be precisely described in the publication.

Sexual-orientation based discrimination is associated with anxiety and depression in young physicians. A national study.

INTRODUCTION: The professional risk factors for depression and anxiety are underexplored in young physicians. While there has been increasing research on the mental health and well-being of lesbian, gay and bisexual patients, few studies have examined the mental health and well-being of lesbian, gay and bisexual young physicians. OBJECTIVE: The objective of the present study was to determine the prevalence of Sexual Orientation-Based Discrimination (SOBD) in French young physicians and if SOBD was associated with increased anxiety and depression in this population. METHOD: This national study is a cross-sectional observational epidemiological national study. The participants were recruited between April 1st 2019 and June 31st 2019. One question with binary answer was asked on SOBD. Mental health was assessed by Hamilton Anxiety & Depression scales. RESULTS: On the 2003 participants, 148 (7%) reported SOBD exposure, 647 (32%) current anxiety disorders and 174 (9%) a current major depressive disorder according to their HAD score. SOBD was almost twice more frequently reported in participants with anxiety disorder and major depression (respectively 10%,vs 6% and 12% vs. 7%, p<0.05). In the first model of multivariate analyses, current anxiety disorder was significantly associated with being woman (adjusted odds ratio aOR=1.688, 95%CI 1.350-2.110, p<0.001) and SOBD (aOR=1.729, 95%CI 1.226-2.440, p=0.002). In the second model of multivariate analyses, current major depression was significantly associated with only SOBD (aOR=1.748, 95%CI 1.057-2.888, p=0.029). CONCLUSION: SOBD has been associated with increased rates of anxiety disorder and major depression in young physicians and should be targeted in mental health prevention programs.

Sexual harassment exposure and impaired mental health in medical students. The MESSIAEN national study.

BACKGROUND: A previous national study has suggested that around 20% of French working women reported sexual harassment (SH) at work but we lack of data in medical students of French hospitals to guide prevention programs. OBJECTIVES: To determine SH prevalence in a national sample of French medical students and to validate a theoretical model explaining SH causes and its impact of mental health. METHODS: The study is a cross-sectional observational epidemiological national study. SH was defined according to the French legal definition. We further explored other discriminations and their potential association with impaired mental health in medical students. Mental health was assessed by Hamilton Anxiety & Depression scale, psychotropic drug consumption and psychotherapy follow-up. A Structured Equation Modeling was carried out to confirm our theoretical model. RESULTS: 2003 participants were recruited. SH was reported by 15.7% of the participants (19.8% of women and 5.2% of men). The SEM model showed good fit (RMSEA=0.024, CFI=0.90, TLI=0.87, WRMR=1.165). SH was associated with risk factors such as feminine gender and surgical and anesthesiology specialties. SH was also associated with exposure to discriminations based on the specialty choice and sexual orientation. SH was associated with impaired mental health. CONCLUSION: French medical student women reported similar rates of SH than other working women, suggesting that SH prevention programs are needed in French hospitals. Surgery and anesthesiology should be targeted in priority. The prevention programs should also target other discriminations and should be evaluated in terms of potential mental health improvement.

Widespread occurrence and genetic diversity of marine parasitoids belonging to Syndiniales (Alveolata).

Syndiniales are a parasitic order within the eukaryotic lineage Dinophyceae (Alveolata). Here, we analysed the taxonomy of this group using 43655 18S rRNA gene sequences obtained either from environmental data sets or cultures, including 6874 environmental sequences from this study derived from Atlantic and Mediterranean waters. A total of 5571 out of the 43655 sequences analysed fell within the Dinophyceae. Both bayesian and maximum likelihood phylogenies placed Syndiniales in five main groups (I-V), as a monophyletic lineage at the base of 'core' dinoflagellates (all Dinophyceae except Syndiniales), although the latter placement was not bootstrap supported. Thus, the two uncultured novel marine alveolate groups I and II, which have been highlighted previously, are confirmed to belong to the Syndiniales. These groups were the most diverse and highly represented in environmental studies. Within each, 8 and 44 clades were identified respectively. Co-evolutionary trends between parasitic Syndiniales and their putative hosts were not clear, suggesting they may be relatively 'general' parasitoids. Based on the overall distribution patterns of the Syndiniales-affiliated sequences, we propose that Syndiniales are exclusively marine. Interestingly, sequences belonging to groups II, III and V were largely retrieved from the photic zone, while Group I dominated samples from anoxic and suboxic ecosystems. Nevertheless, both groups I and II contained specific clades preferentially, or exclusively, retrieved from these latter ecosystems. Given the broad distribution of Syndiniales, our work indicates that parasitism may be a major force in ocean food webs, a force that is neglected in current conceptualizations of the marine carbon cycle.

[Use of high-flow nasal cannula in infants with bronchiolitis in a pediatric emergency department]. / Utilisation des lunettes nasales à haut débit chez les nourrissons hospitalisés en service d'accueil des urgences pédiatriques pour bronchiolite : étude observationnelle.

High-flow nasal cannula oxygen therapy (HFNC) is a technique for noninvasive ventilation commonly used in pediatric intensive care units for respiratory distress, particularly in acute bronchiolitis. HFNC was introduced in the pediatric emergency department of the Reims university hospital for the treatment of infants with moderate to severe acute viral bronchiolitis. This retrospective observational study aimed to investigate the use of HFNC in a pediatric emergency ward, describing the groups of infants with acute viral bronchiolitis to be treated either with conventional oxygen therapy or with HFNC therapy. A total of 89 infants aged less than 6 months were included between December 2013 and April 2014. The choice of the type of oxygen used belonged to the pediatrician, according to his or her assessment of the clinical severity of the patient's condition, guided by a protocol of HFNC use for the treatment of moderate to severe bronchiolitis and limited by the availability of a single device in the department. Eighty-nine infants were included; 64% were boys. Fifty-seven infants (64%) had no medical history. At admission, 39 infants (46.4%) had tachypnea and 75 (84.3%) intercostal indrawing. RSV was found in 75 infants (97.4% of infants had a positive respiratory virology test). Seventy-six infants (85.4%) were treated with conventional oxygen therapy and 13 (14.6%) with HFNC. At admission, the mean weight for infants treated with HFNC was lower (P=0.03), the oxygen saturation level was 86.7% versus 93.5% (P=0.03) for conventional oxygen therapy. Moreover, modified Wood's score was higher and the mean PCO2 was 61.1 versus 49.9mmHg (P<0.01). Six infants treated with conventional oxygen therapy (7.9%) and six with HFNC (46.1%) were then transferred to an intensive care unit. HFNC therapy in the pediatric emergency ward seems to be an advantageous therapeutic option in the early treatment of infants with moderate to severe bronchiolitis, but further studies are needed to specify its indications and effectiveness.

[A retrospective study to evaluate a protocol aimed at reducing the number of unnecessary voiding cystourethrographies performed after a first episode of febrile urinary tract infection]. / Évaluation d'un protocole de limitation des indications de cystographie dans les infections urinaires fébriles.

AIM: Whether or not voiding cystourethrography (VCUG) should be performed after a first episode of urinary tract infection (UTI) remains a matter of debate. The role of VCUG is primarily to diagnose high-grade vesicoureteral reflux (≥grade III) (VUR) and hence prevent the development of renal scars and poor long-term outcome. We designed a protocol designed to reduce the indications for performing unnecessary VCUGs after a first episode of febrile UTI. In order to evaluate the efficacy of our protocol, we designed a retrospective study to verify whether high-grade VUR was subsequently being underdiagnosed. METHODS: This study compared the number of cases of VUR diagnosed over 2 1-year periods in children aged 1 month to 18 years. Data were collected from records held in the pediatric emergency department of the University Hospital of Reims. All cases included had presented to the department with a first episode of febrile UTI. During the first 1-year collection period, all patients underwent a VCUG. During the second collection period, the protocol was in place and VCUG was only performed in children with a serum procalcitonin level greater than 1 ng/L and/or an abnormal renal ultrasound scan. RESULTS: During the first year, 100 patients underwent routine VCUG and 7 cases of high-grade VUR were diagnosed. During the following year, VCUG was limited according to the new protocol: 102 patients were enrolled, 52 VCUGs were performed and 8 cases of high-grade VUR were diagnosed. Cases of low-grade VUR (I and II) were less frequently detected, without significant consequences for the patients. CONCLUSION: The protocol led to a 40% decrease in the number of VCUGs performed. No cases of high-grade VUR were missed; however, the number of VCUGs performed with a normal outcome remained significant.

Massive splenomegaly and pancytopenia reuealing sarcoidosis in a child.

Clinical presentation of sarcoidosis in children is very variable and dependant upon age. Herein, we report the first association of massive splenomegaly and pancytopenia as the revealing mode of sarcoidosis in an 8-year-old girl who, despite bone marrow involvement, had a remarkable good outcome following steroid therapy.