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Malesys V, Andrieux-Ledier A, Lavenus P, Simon L. Building a cm 2scale CVD graphene-based gas sensor: modelling the kinetic with a three-site adsorption/desorption Langmuir model. NANOTECHNOLOGY 2024; 35:285501. [PMID: 38579693 DOI: 10.1088/1361-6528/ad3b02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 04/05/2024] [Indexed: 04/07/2024]
Abstract
In this article, we aim to develop and study a highly sensitive and selective cm2scale graphene-based gas sensor. We present the technology used to fabricate sensors which integrate monolayer chemical vapour deposition graphene: photolithography and transfer of layers. Characterization techniques (optical microscopy, AFM, micro-Raman spectroscopy, transport electrical measurements) ensure a diagnosis of graphene ribbons and allow good reproducibility of technological processes. We present the results of gas characterizations after a 200 ppm NO2exposure. We propose a novel approach for the modelling of the sensor response with a three-site adsorption/desorption Langmuir model. This innovative way of modelling the sensor response should provide a better understanding of the sensor's kinetic and help to overcome the long response time observed with graphene gas sensors.
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Simon L, Finoco M, Julien-Marsollier F, Happiette A, Simon AL, Ilharreborde B. Does the addition of convex uniplanar screws in hybrid constructs improve 3D surgical correction in thoracic adolescent idiopathic scoliosis posterior fusion? J Child Orthop 2024; 18:124-133. [PMID: 38567048 PMCID: PMC10984149 DOI: 10.1177/18632521231220388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 11/22/2023] [Indexed: 04/04/2024] Open
Abstract
Purpose Hybrid techniques using thoracic sublaminar bands have proved their efficacy in adolescent idiopathic scoliosis posterior fusion, but clinical axial correction sometimes remained disappointing. One solution found was "the frame technique" and the second alternative was the replacement of the convex sublaminar bands by periapical uniplanar screws. The goal of this study was to compare clinical and radiological outcomes of both techniques in a consecutive cohort of adolescent idiopathic scoliosis patients. Methods All patients undergoing primary posterior fusion for thoracic adolescent idiopathic scoliosis between January 2017 and March 2020 were included. Two groups were compared: Group 1 with thoracic sublaminar bands only and Group 2 with periapical uniplanar screws. All patients underwent standing stereoradiographs. The main frontal, sagittal, and axial (apical vertebra rotation) radiological parameters of interest were analyzed. Functional outcomes were assessed using the Scoliosis Research Society 30 score. Results A total of 147 adolescents were included (Group 1, n = 73 and Group 2, n = 74 patients). In the frontal plane, a greater reduction index was observed in Group 2 (68% versus 62%, p < 0.001) as well as a better apical axial correction (67.8% versus 46.6%, p = 0.03). The number of thoracoplasty performed was reduced (6.7% versus 20.5%, p = 0.02) in Group 2, with a significant decrease in the rate of mechanical complication. No significant loss of correction was observed during follow-up in any of the group. Conclusion The adjunction of convex uniplanar screws at the periapical levels improved the three-dimensional surgical correction of thoracic adolescent idiopathic scoliosis treated with hybrid constructs. Level of evidence level III, retrospective comparative study.
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Őri D, Vass E, Vajsz K, Vincze K, Sztancsik V, Szemán-Nagy A, Simon L. Psychometric validation of the Reported and Intended Behaviour Scale (RIBS) in Hungary with a particular focus on 'Don't know' responses and further scoring recommendations. BMC Public Health 2023; 23:1773. [PMID: 37700224 PMCID: PMC10496190 DOI: 10.1186/s12889-023-16707-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 09/05/2023] [Indexed: 09/14/2023] Open
Abstract
AIMS Reported and Intended Behaviour Scale (RIBS) was designed to measure mental health stigma-related behaviors in the general public. We aimed to examine its psychometric properties and validate the scale in a Hungarian non-clinical community sample. The secondary aim of this study was to assess the appropriateness of the current scoring recommendations of 'Don't know' responses being coded as neutral, which had never been investigated before. In addition, we provide an overview of the results of already existing studies on the scale. METHODS Hungarian participants completed the RIBS within this cross-sectional online survey study and were considered non-clinical individuals based on a cut-off point of the Global Severity Index T score of 63 on the Symptom Checklist-90-Revised. Confirmatory factor analysis, reliability measures, and comparative analyses were performed. RESULTS Of the n = 5,701, n = 5,141 participants were included in the analysis. The mean age was 27.8 ± 11.1 years, and 89.2% (n = 4,587) of the sample were female. The unidimensional structure was supported by good model fit indices (RMSEA = 0.031, CFI = 0.999, TLI = 0.996, and WRMR = 0.006). Internal consistency of the RIBS and its test-retest reliability with a 5-month follow-up period were found to be good (Cronbach's alpha = 0.88 and ICC = 0.838). We found statistically significant differences between the total scores when the 'Don't know' responders were excluded from the sample or when they were coded as neutral as recommended by the scale authors (16 (IQR:13-18) vs. 15 (IQR:13-18) p < 0.0001). There were also statistically significant differences between 'Neither agree nor disagree' and 'Don't know' participants in several aspects of lived experiences of mental health problems. CONCLUSIONS The RIBS demonstrated good psychometric properties and can be transferred to the Hungarian context. It will be a valuable tool in assessing stigmatizing behavior and testing the efficacy of antistigma programs. Our results suggest that 'Neither agree nor disagree' and 'Don't know' responses bear different meanings, and coding should account for this.
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Darréon J, Massabeau C, Geffroy C, Maroun P, Simon L. Surface-guided radiotherapy overview: Technical aspects and clinical applications. Cancer Radiother 2023; 27:504-510. [PMID: 37558608 DOI: 10.1016/j.canrad.2023.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/05/2023] [Accepted: 07/07/2023] [Indexed: 08/11/2023]
Abstract
In radiotherapy, patient positioning has long been ensured by ionizing imaging (kV or MV). Over the past ten years, surface-guided radiotherapy has appeared in radiotherapy departments. It is a continuous three-dimensional acquisition of the surface of the patient, based on the use of several optical cameras. The acquired surface is compared to an expected surface (usually taken from the planning scanner). Operators can constantly appreciate poor position, anatomical deformity or patient shift. Thus, the system allows an aid to the positioning of the patient, possibly without tattooing, but also a follow-up of the patient during the duration of the session. The most obvious contribution of the system concerns the treatment of the breast. In fact, for this location, the bone registration is not ideal and the target is visible in surface-guided radiotherapy. These systems also make it possible to treat in deep inspiration breath hold. But several other locations can benefit from it (pelvis, thorax, etc.).
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Simon L, De Taddeo M, Coeurvolan A, Colpaert M, Richard J, Devoisselle JM, Morille M, Marcotte N, Bégu S, Lapinte V. Various lipid anchors on amphiphilic polyoxazolines to reach efficient intracellular delivery. Int J Pharm 2023:123103. [PMID: 37277088 DOI: 10.1016/j.ijpharm.2023.123103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 05/30/2023] [Accepted: 06/01/2023] [Indexed: 06/07/2023]
Abstract
This work aimed at evaluating the potential of amphiphilic polyoxazolines bearing lipid chain called lipopolyoxazolines to reach efficient intracellular delivery. Four lipid chains: linear saturated, linear unsaturated and two branched one of various length were associated to poly(2-methyl-2-oxazoline) block. The evaluation of their physicochemical features and their impact on cell viability and internalization capacity indicated that the linear saturated gathered the highest cell internalization with a good cell viability. Its intracellular delivery capacity was compared to the PEG reference (DSPE-PEG) after being formulated in liposomes and loaded with fluorescent probe. Both POxylated and PEGylated liposomes showed similar characteristics regarding size distribution, drug loading and cell viability. However, their intracellular delivery was dramatically different, with an improved delivery by 30 folds for the POxylated ones. This significantly better performance highlighted the difficulty of PEGylated liposomes to enter the cells by endocytosis, contrary to POxylated liposomes. This study promotes the value of lipopoly(oxazoline) as a lipopoly(ethylene glycol) alternative for effective intracellular delivery and holds great promises for development of nanoformulations for intravenous administration.
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Yashar C, Khan AJ, Chen P, Einck J, Poppe M, Li L, Yehia ZA, Vicini FA, Moore D, Arthur D, Quinn TJ, Kowzun M, Simon L, Scanderbeg D, Shah C, Haffty BG, Kuske R. Three-Fraction Accelerated Partial Breast Irradiation (APBI) Delivered With Interstitial Brachytherapy Is Safe: First Results From the Tri-fraction Radiation Therapy Used to Minimize Patient Hospital Trips (TRIUMPH-T) Trial. Pract Radiat Oncol 2023:S1879-8500(23)00062-0. [PMID: 37140504 DOI: 10.1016/j.prro.2023.03.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 02/27/2023] [Accepted: 03/07/2023] [Indexed: 05/05/2023]
Abstract
PURPOSE Shorter courses of breast radiotherapy are offered as an alternative to 4 weeks of whole-breast irradiation after lumpectomy, including brachytherapy. A prospective phase 2multi-institution clinical trial to study 3-fraction accelerated partial breast irradiation delivered by brachytherapy was conducted. METHODS AND MATERIALS The trial treated selected breast cancers after breast-conserving surgery with brachytherapy applicators that delivered 22.5 Gy in 3 fractions of 7.5 Gy. The planning treatment volume was 1 to 2 cm beyond the surgical cavity. Eligible women were age ≥45 years with unicentric invasive or in situ tumors ≤3 cm excised with negative margins and with positive estrogen or progesterone receptors and no metastases to axillary nodes. Strict dosimetric parameters were required to be met and follow up information was collected from the participating sites. RESULTS Two hundred patients were prospectively enrolled; however, a total of 185 patients who were enrolled were followed for a median of 3.63 years. Three-fraction brachytherapy was associated with low chronic toxicity. There was excellent or good cosmesis in 94% of patients. There were no grade 4 toxicities. Grade 3 fibrosis at the treatment site was present in 1.7% and 32% percent had grades 1 or 2 fibrosis at the treatment site. There was 1 rib fracture. Other late toxicities included 7.4% grade 1 hyperpigmentation, 2% grade 1 telangiectasias, 1.7% symptomatic seromas, 1.7% abscessed cavities, and 1.1% symptomatic fat necrosis. There were 2 (1.1%) ipsilateral local recurrences, 2 (1.1%) nodal recurrences and no distant recurrences. Other incidents included one contralateral breast cancer and 2 second malignancies (lung). CONCLUSIONS Ultra-short breast brachytherapy is feasible and has excellent toxicity and could be an alternative to standard 5-day, 10 fraction accelerated partial breast irradiation in eligible patients. Patients from this prospective trial will continue to be followed to evaluate long-term outcomes.
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Douce P, Mermillod-Blondin F, Simon L, Dolédec S, Eymar-Dauphin P, Renault D, Sulmon C, Vallier F, Bittebiere AK. Biotic and abiotic drivers of aquatic plant communities in shallow pools and wallows on the sub-Antarctic Iles Kerguelen. Polar Biol 2023. [DOI: 10.1007/s00300-023-03122-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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Loffler A, Venier AG, Jouzeau A, Péfau M, Dugravot L, Chabaud A, Simon L, Dumartin C. Factors associated with daptomycin consumption in French hospitals between 2019 and 2020: A nationwide surveillance study. Infect Dis Now 2023; 53:104636. [PMID: 36503170 DOI: 10.1016/j.idnow.2022.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/25/2022] [Accepted: 12/02/2022] [Indexed: 12/13/2022]
Abstract
OBJECTIVES This study aimed to investigate factors associated with daptomycin consumption in French healthcare facilities (HCF) between 2019 and 2020. METHODS Antibiotic consumption expressed as number of defined daily doses (DDD) per 1,000 patient-days (PD) and antimicrobial resistance (AMR) expressed as incidence densities per 1,000PD were extracted each year from the nationwide surveillance network run by the SPARES project (Surveillance and Prevention of Antimicrobial RESistance in hospitals), collecting data at ward level among voluntary HCFs using standardized methodology and webtool. All HCF participating both in 2019 and 2020 were included. A multivariable linear regression was fitted. RESULTS Among 622 HCFs, we analyzed daptomycin consumption and AMR data in 1,637 clinical wards. Incidence densities of methicillin-resistant Staphylococcus aureus (MRSA) and methicillin-resistant coagulase-negative staphylococci (MRCNS) were the highest in intensive care unit wards (0.54 and 6.83 respectively in 2020). On the most adjusted model, the year 2020 was correlated with a higher daptomycin consumption (1.53; p = 0.01). A greater number of inpatient beds (0.01; p < 0.001), the presence of orthopedic surgery activity in the HCF (1.66; p < 0.02), MRSA (4.38; p < 0.001) and MRCNS (0.61; p < 0.001) incidence densities were associated with a higher daptomycin use. The final model explained 18% of the observed variance. CONCLUSIONS This study showed that daptomycin consumption was correlated to MRSA and MRCNS incidence densities, to the year 2020 and to non-modifiable HCF-related factors. Prevention of coagulase-negative staphylococci infections should be considered by antimicrobial stewardship teams when daptomycin use is going up in HCF.
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Simon L, Steinmetz L, Feige B, Benz F, Spiegelhalder K, Baumeister H. Comparing Face-to-Face Cognitive Behavioral Therapy with Digitalized Cognitive Behavioral Therapy for Insomnia: A Network Meta-Analysis. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Simon L, Bellard E, Jouanmiqueou B, Lapinte V, Marcotte N, Devoisselle J, Lamaze C, Rols M, Golzio M, Begu S. Interactions of amphiphilic polyoxazolines formulated or not in lipid nanocapsules with biological systems: Evaluation from membrane models up to in vivo mice epidermis. Eur J Pharm Biopharm 2022; 180:308-318. [DOI: 10.1016/j.ejpb.2022.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 08/29/2022] [Accepted: 10/12/2022] [Indexed: 11/04/2022]
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Kassab Hassan S, Simon L, Campana M, Julien-Marsollier F, Simon AL, Ilharreborde B. S2-Alar-iliac screw fixation for paediatric neuromuscular scoliosis: Preliminary results after two years. Orthop Traumatol Surg Res 2022; 108:103234. [PMID: 35144011 DOI: 10.1016/j.otsr.2022.103234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 04/27/2021] [Accepted: 04/30/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND Correcting pelvic obliquity is among the main goals of surgery for neuromuscular scoliosis. Spino-pelvic fixation must be stable and capable of withstanding the considerable mechanical forces applied at the lumbo-sacral junction. Selection of the best anchoring option is therefore crucial. S2-alar-iliac (S2AI) screws, which are used in adults, are less often chosen in the French paediatric spinal-surgery community. The objective of this study was to report our preliminary experience with S2AI screws used in the treatment of paediatric patients with neuromuscular scoliosis. HYPOTHESIS Pelvic anchoring by means of S2AI screws is reliable and technically feasible in non-ambulatory children with neuromuscular scoliosis. MATERIALS AND METHODS Consecutive non-ambulatory patients who underwent scoliosis surgery with S2AI screw fixation to the pelvis between 2016 and 2018 were retrospectively included. The surgical procedure consisted in either posterior spinal fusion (PSF) or magnetic growing rod (MGR) implantation. In all patients, radiographs were obtained before surgery, within 3 months after surgery, and at last follow-up; and low-dose computed tomography (CT) was performed before and after surgery. RESULTS We included 25 patients with a mean age of 13.8±4.0 years, 18 managed by PSF and 7 by MGRs. Screw diameters ranged from 7.5 to 9.5mm and all screws were at least 60mm in length. The diameters and lengths were the same on both sides in 16 (89%) patients in the PSF group and in all patients in the MGR group. At last follow-up after a mean of 35.5±3.0 months, pelvic obliquity was corrected in all 23 patients with this abnormality before surgery. Complications consisted of lateral cortical screw breakthrough in 8 (32% of screws) patients and screw malposition in 2 (8% of screws) patients. No clinically significant complications related to the fixation material were recorded. DISCUSSION The results of our study demonstrate the feasibility of S2AI screw fixation in paediatric patients with neuromuscular scoliosis. Pelvic asymmetry and dysmorphism do not contra-indicate the procedure but must be evaluated before surgery. Further work is needed to assess the potential long-term consequences on pain and growth of screw passage through the sacro-iliac joints. LEVEL OF EVIDENCE IV, retrospective study.
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Verspyck E, Gascoin G, Senat MV, Ego A, Simon L, Guellec I, Monier I, Zeitlin J, Subtil D, Vayssiere C. [Ante- and postnatal growth charts in France - guidelines for clinical practice from the Collège national des gynécologues et obstétriciens français (CNGOF) and from the Société française de néonatologie (SFN)]. GYNECOLOGIE, OBSTETRIQUE, FERTILITE & SENOLOGIE 2022; 50:570-584. [PMID: 35781088 DOI: 10.1016/j.gofs.2022.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To recommend the most appropriate biometric charts for the detection of antenatal growth abnormalities and postnatal growth surveillance. METHODS Elaboration of specific questions and selection of experts by the organizing committee to answer these questions; analysis of the literature by experts and drafting conclusions by assigning a recommendation (strong or weak) and a quality of evidence (high, moderate, low, very low) and for each question; all these recommendations have been subject to multidisciplinary external review (obstetrician gynecologists, pediatricians). The objective for the reviewers was to verify the completeness of the literature review, to verify the levels of evidence established and the consistency and applicability of the resulting recommendations. The overall review of the literature, quality of evidence and recommendations were revised to take into consideration comments from external reviewers. RESULTS Antenatally, it is recommended to use all WHO fetal growth charts for EFW and common ultrasound biometric measurements (strong recommendation; low quality of evidence). Indeed, in comparison with other prescriptive curves and descriptive curves, the WHO prescriptive charts show better performance for the screening of SGA (Small for Gestational Age) and LGA (Large for Gestational Age) with adequate proportions of fetuses screened at extreme percentiles in the French population. It also has the advantages of having EFW charts by sex and biometric parameters obtained from the same perspective cohort of women screened by qualified sonographers who measured the biometric parameters according to international standards. Postnatally, it is recommended to use the updated Fenton charts for the assessment of birth measurements and for growth monitoring in preterm infants (strong recommendation; moderate quality of evidence) and for the assessment of birth measurements in term newborn (expert opinion). CONCLUSION It is recommended to use WHO fetal growth charts for antenatal growth monitoring and Fenton charts for the newborn.
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Delbaere A, Hammel N, Saadi O, Simon L, Khamphan C, Vieillevigne L. PO-1533 Determination of field output correction factors for the IBA Razor Diode. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03497-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Blanchard T, Lecomte P, Melon M, Simon L, Hassan K, Nicol R. Experimental acoustic scene analysis using One-Eighth spherical fraction microphone array. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2022; 151:180. [PMID: 35105033 DOI: 10.1121/10.0009230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 12/09/2021] [Indexed: 06/14/2023]
Abstract
This paper investigates the performance of one-eighth Spherical Fraction Microphone Array through experimental measurement to analyze acoustic scenes in one-eighth of space. The array geometry is designed to be placed in a room corner at the junction of three acoustically rigid walls. Two prototypes are built with 8 and 16 microphones, respectively. The sampling strategy is discussed and a spatial aliasing analysis is carried out both analytically and by numerical simulations. The array performances are evaluated through Spherical Fraction Beamforming (SFB). This approach is based on the decomposition of the acoustic pressure field in a rigid bounded domain. The localization angular error and Directivity Index criterion are evaluated for both arrays. In a first experiment, the arrays are mounted in an eighth of space built inside an anechoic room. The results are compared with simulation and show consistency. The theoretical limitations of SFB in a rigid bounded one-eighth of space are retrieved experimentally. These limitations are also observed in a real configuration: an office room. Further investigations on SFB are also conducted in the case of a virtual scene constructed with two sound sources.
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Yashar C, Khan A, Haffty B, Chen P, Yehia Z, Vicini F, Kowzun M, Quinn T, Scanderbeg D, Simon L, Kuske R. Three-Fraction TRIUMPH-T Brachytherapy for Delivery of APBI Offers Effective Disease Control With Minimal Late Toxicity. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Simon L, Picard C, Calixto L, Lapinte V, Devoisselle J, Bégu S. Study of the physicochemical interactions of nanoformulations based on polyoxazolines with a skin surface model. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ali-Brandmeyer O, Blanckaert K, Nion-Huang M, Simon L, Birgand G. Consumption of alcohol-based hand rub in French nursing homes: results from a nationwide survey, 2018-2019. J Hosp Infect 2021; 118:27-31. [PMID: 34534602 DOI: 10.1016/j.jhin.2021.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 08/30/2021] [Accepted: 09/05/2021] [Indexed: 11/28/2022]
Abstract
This study assessed the hand hygiene performance in French nursing homes using the consumption of alcohol-based hand rubs (AHRs) as a surrogate. Nursing homes from the 17 French regions were contacted to collect their AHR consumption and occupancy in 2018 and 2019. A total of 1290 nursing homes from 15 French regions participated in the survey. The estimated median number of hand hygiene actions per resident-day was 1.48 (interquartile range: 1.04-2.03) in 2018 and 1.60 (1.10-2.26) in 2019. A significantly higher AHR consumption was observed in public nursing homes with an infection control team or link nurse.
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Grigsby E, Rickam M, Thewlis D, Simon L, Chavez R, Huston M, Rieger J, Glover D, Collins S. XT-150- A novel immunomodulatory gene therapy for osteoarthritis pain in phase 2b development. Osteoarthritis Cartilage 2021. [DOI: 10.1016/j.joca.2021.05.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Robert C, Munoz A, Moreau D, Mazurier J, Sidorski G, Gasnier A, Beldjoudi G, Grégoire V, Deutsch E, Meyer P, Simon L. Clinical implementation of deep-learning based auto-contouring tools-Experience of three French radiotherapy centers. Cancer Radiother 2021; 25:607-616. [PMID: 34389243 DOI: 10.1016/j.canrad.2021.06.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/17/2021] [Accepted: 06/18/2021] [Indexed: 12/23/2022]
Abstract
Deep-learning (DL)-based auto-contouring solutions have recently been proposed as a convincing alternative to decrease workload of target volumes and organs-at-risk (OAR) delineation in radiotherapy planning and improve inter-observer consistency. However, there is minimal literature of clinical implementations of such algorithms in a clinical routine. In this paper we first present an update of the state-of-the-art of DL-based solutions. We then summarize recent recommendations proposed by the European society for radiotherapy and oncology (ESTRO) to be followed before any clinical implementation of artificial intelligence-based solutions in clinic. The last section describes the methodology carried out by three French radiation oncology departments to deploy CE-marked commercial solutions. Based on the information collected, a majority of OAR are retained by the centers among those proposed by the manufacturers, validating the usefulness of DL-based models to decrease clinicians' workload. Target volumes, with the exception of lymph node areas in breast, head and neck and pelvic regions, whole breast, breast wall, prostate and seminal vesicles, are not available in the three commercial solutions at this time. No implemented workflows are currently available to continuously improve the models, but these can be adapted/retrained in some solutions during the commissioning phase to best fit local practices. In reported experiences, automatic workflows were implemented to limit human interactions and make the workflow more fluid. Recommendations published by the ESTRO group will be of importance for guiding physicists in the clinical implementation of patient specific and regular quality assurances.
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Delbaere A, Younes T, Simon L, Khamphan C, Vieillevigne L. PO-1582 Spencer-Attix stopping power ratios for flattening filter and flattening filter free photon beams. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)08033-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Jouzeau A, Chabaud A, Péfau M, Dugravot L, Lieutier-Colas F, Simon L, Dumartin C. Consommations d’antibiotiques pendant la première vague COVID-19 dans les établissements de santé. Infect Dis Now 2021. [PMCID: PMC8327514 DOI: 10.1016/j.idnow.2021.06.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Introduction Lors de la première vague de l’épidémie de COVID-19, la réduction d’activité des établissements de santé (ES), notamment en chirurgie, a pu entraîner un moindre recours aux antibiotiques. Toutefois, l’accueil de nombreux patients atteints de COVID-19 a engendré la prescription de traitements antibiotiques visant à prévenir ou traiter des (suspicions de) surinfections bactériennes. Les consommations d’antibiotiques au premier trimestre 2020 (début de première vague) ont été comparées à celles du deuxième trimestre (pic de la première vague) afin d’estimer l’impact de l’épidémie sur l’utilisation d’antibiotiques. Matériels et méthodes Les consommations d’antibiotiques à visée systémique dispensés dans les services d’hospitalisation complète ont été recueillies pour la période du 1er janvier au 31 mars 2020 (T1) puis du 1er avril au 30 juin 2020 (T2), dans des ES volontaires participant à la surveillance nationale SPARES, et ayant indiqué avoir accueilli ou non des patients COVID-19. Elles ont été exprimées en nombre de doses définies journalières (DDJ) pour 1000 journées d’hospitalisation (JH) et comparées entre T1 et T2 dans les secteurs d’activité clinique de réanimation, médecine et soins de suite et réadaptation (SSR) (test de Wilcoxon des rangs signés). Résultats Dans les 118 ES ayant accueilli des patients COVID-19 (C+) en T1 et T2 et les 75 ES n’en ayant pas accueilli (C−), l’activité en nombre de JH avait diminué de 14 % et 13 % respectivement. La consommation globale d’antibiotique était plus faible en T2 par rapport à T1 dans 35 secteurs de réanimation C+ (−19 %), 72 secteurs de médecine C+ (−9 %) et 25 secteurs de médecine C− (−19 %), ainsi que dans 37 SSR C− (−14 %). En réanimation, les consommations d’azithromycine, ceftriaxone, cefotaxime et amoxicilline–acide clavulanique étaient significativement plus faibles en T2 et celle de ceftazidime significativement plus élevée. La consommation d’antibiotiques était plus élevée en T2 dans 43 secteurs de SSR C+ (+6 %), avec une consommation de ceftriaxone significativement plus élevée. Conclusion Globalement, la pression de sélection antibiotique semble avoir été plus faible en T2 dans les ES volontaires ayant fourni des données de consommation par secteur d’activité clinique, qu’ils aient accueilli ou non des patients COVID-19. Cette tendance peut être liée à la réduction d’activité liée, d’une part, aux déprogrammations, et d’autre part, au confinement qui a réduit le nombre d’infections nécessitant potentiellement une hospitalisation. De plus, la mobilisation des comités anti-infectieux a pu conduire à la diffusion de recommandations de bon usage des antibiotiques pour les patients COVID-19 avant même la parution de l’avis du HCSP en juin. Toutefois, s’agissant de données agrégées de dispensation et non de données individuelles d’administration, un effet stockage en T1 ne peut être écarté. L’effet à moyen terme sur les résistances bactériennes reste à évaluer.
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Meyer P, Biston MC, Khamphan C, Marghani T, Mazurier J, Bodez V, Fezzani L, Rigaud PA, Sidorski G, Simon L, Robert C. Automation in radiotherapy treatment planning: Examples of use in clinical practice and future trends for a complete automated workflow. Cancer Radiother 2021; 25:617-622. [PMID: 34175222 DOI: 10.1016/j.canrad.2021.06.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 06/04/2021] [Indexed: 01/19/2023]
Abstract
Modern radiotherapy treatment planning is a complex and time-consuming process that requires the skills of experienced users to obtain quality plans. Since the early 2000s, the automation of this planning process has become an important research topic in radiotherapy. Today, the first commercial automated treatment planning solutions are available and implemented in a growing number of clinical radiotherapy departments. It should be noted that these various commercial solutions are based on very different methods, implying a daily practice that varies from one center to another. It is likely that this change in planning practices is still in its infancy. Indeed, the rise of artificial intelligence methods, based in particular on deep learning, has recently revived research interest in this subject. The numerous articles currently being published announce a lasting and profound transformation of radiotherapy planning practices in the years to come. From this perspective, an evolution of initial training for clinical teams and the drafting of new quality assurance recommendations is desirable.
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Sevin T, Daniau C, Alfandari S, Piednoir E, Dumartin C, Blanchard H, Simon L, Berger-Carbonne A, Le Vu S. Patterns of antibiotic use in hospital-acquired infections. J Hosp Infect 2021; 114:104-110. [PMID: 34052283 DOI: 10.1016/j.jhin.2021.05.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/19/2021] [Accepted: 05/21/2021] [Indexed: 11/24/2022]
Abstract
BACKGROUND Monitoring the use of antimicrobials in hospitalized patients is critical owing to the risk of resistance selection. This study aimed to describe the patterns of antimicrobial prescription for the most frequent healthcare-associated infections (HAIs) in France, relating drugs and microbiological data. METHODS We used data from the 2017 point-prevalence survey of HAI and antimicrobial use in France, a large nationally representative sample survey of inpatients. We sought unambiguous correspondence between individual indications of antibiotic regimen and HAI sites to determine which molecules were directed towards which pathogen, considering its resistance profile. RESULTS Among 75,698 adult patients from 401 hospitals, 5.1% had an active HAI and 4.3% were being treated for an HAI. The two most frequent antibiotic indications were lower respiratory tract (LRTI, 27.7%) and urinary tract infections (UTI, 18.4%). For LRTI, the most prescribed antibiotic was amoxicillin-clavulanic acid (27.6%) and most frequently isolated pathogens (each accounting for around 17% of isolates) were Staphylococcus aureus, Pseudomonas aeruginosa and Escherichia coli. Meticillin-resistant S. aureus LRTI was more likely to be treated with linezolid. For UTI, ofloxacin, ceftriaxone, amoxicillin/co-amoxiclav were most-prescribed (∼13% each) and E. coli predominantly isolated (52.0%). Extended-spectrum beta-lactamase-producing E. coli UTI were more likely treated by fosfomycin, pivmecillinam or ertapenem. CONCLUSIONS This study provides a baseline of antimicrobial use in relation to microbiological information in patients with the most common HAIs. These results can serve to direct future efforts in antimicrobial stewardship. Our work could be extended to a broader population, notably in Europe where similar surveys have been conducted.
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Saravia A, Torres D, Levitt D, Stowe CV, Molina P, Simon L. Chronic binge alcohol impairs glucose‐insulin dynamics in SIV‐infected female rhesus macaques. FASEB J 2021. [DOI: 10.1096/fasebj.2021.35.s1.01813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Leaune E, Allali R, Rotgé JY, Simon L, Vieux M, Fossati P, Gaillard R, Gourion D, Masson M, Olié E, Vaiva G. Prevalence and impact of patient suicide in psychiatrists: Results from a national French web-based survey. Encephale 2021; 47:507-513. [PMID: 33814167 DOI: 10.1016/j.encep.2020.11.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/12/2020] [Accepted: 11/17/2020] [Indexed: 10/21/2022]
Abstract
BACKGROUND Patient suicide (PS) is known to be a frequent and challenging occupational hazard for mental health professionals. No study previously explored the prevalence and impact of PS in a large sample of French psychiatrists. METHOD A national web-based survey was performed between September and December 2019 to assess (a) the prevalence of the exposure to PS, (b) the emotional, traumatic and professional impacts of PS, and (c) the perceived support in the aftermath of PS in French psychiatrists. Participants were contacted through email to answer the online 62-item questionnaire, including a measure of traumatic impact through the Impact of Event Scale-Revised. Emotional and professional impacts and perceived support were assessed through dedicated items. RESULTS A total of 764 psychiatrists fully completed the survey. Of them, 87.3% reported an exposure to PS and 13.7% reported PTSD symptoms afterward. Guilt, sadness and shock were the most frequent emotions. Among the exposed psychiatrists, 15.1% have temporarily considered changing their career path. The most emotionally distressing PS occurred during their ten first years of practice or during residency. A total of 37.1% of respondents felt unsupported and 50.4% reported that no team meeting had been organized in the aftermath. The feeling of responsibility for the death was strongly associated with negative impacts. CONCLUSION Our results entail considerations to prevent negative mental health outcomes in psychiatrists after PS. Notably, our results advocate for the implementation of educational programs during psychiatric residency and postvention programs in healthcare settings to effectively help psychiatrists in dealing with PS.
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