Study of High-Transverse-Momentum Higgs Boson Production in Association with a Vector Boson in the qqbb Final State with the ATLAS Detector

This Letter presents the first study of Higgs boson production in association with a vector boson (V=W or Z) in the fully hadronic qqbb final state using data recorded by the ATLAS detector at the LHC in proton-proton collisions at sqrt[s]=13  TeV and corresponding to an integrated luminosity of 137  fb^{-1}. The vector bosons and Higgs bosons are each reconstructed as large-radius jets and tagged using jet substructure techniques. Dedicated tagging algorithms exploiting b-tagging properties are used to identify jets consistent with Higgs bosons decaying into bb[over ¯]. Dominant backgrounds from multijet production are determined directly from the data, and a likelihood fit to the jet mass distribution of Higgs boson candidates is used to extract the number of signal events. The VH production cross section is measured inclusively and differentially in several ranges of Higgs boson transverse momentum: 250-450, 450-650, and greater than 650 GeV. The inclusive signal yield relative to the standard model expectation is observed to be μ=1.4_{-0.9}^{+1.0} and the corresponding cross section is 3.1±1.3(stat)_{-1.4}^{+1.8}(syst)  pb.

Measurement of the Centrality Dependence of the Dijet Yield in p+Pb Collisions at sqrt[s_{NN}]=8.16 TeV with the ATLAS Detector

ATLAS measured the centrality dependence of the dijet yield using 165  nb^{-1} of p+Pb data collected at sqrt[s_{NN}]=8.16  TeV in 2016. The event centrality, which reflects the p+Pb impact parameter, is characterized by the total transverse energy registered in the Pb-going side of the forward calorimeter. The central-to-peripheral ratio of the scaled dijet yields, R_{CP}, is evaluated, and the results are presented as a function of variables that reflect the kinematics of the initial hard parton scattering process. The R_{CP} shows a scaling with the Bjorken x of the parton originating from the proton, x_{p}, while no such trend is observed as a function of x_{Pb}. This analysis provides unique input to understanding the role of small proton spatial configurations in p+Pb collisions by covering parton momentum fractions from the valence region down to x_{p}∼10^{-3} and x_{Pb}∼4×10^{-4}.

Search for New Phenomena in Two-Body Invariant Mass Distributions Using Unsupervised Machine Learning for Anomaly Detection at sqrt[s]=13 TeV with the ATLAS Detector

Searches for new resonances are performed using an unsupervised anomaly-detection technique. Events with at least one electron or muon are selected from 140  fb^{-1} of pp collisions at sqrt[s]=13  TeV recorded by ATLAS at the Large Hadron Collider. The approach involves training an autoencoder on data, and subsequently defining anomalous regions based on the reconstruction loss of the decoder. Studies focus on nine invariant mass spectra that contain pairs of objects consisting of one light jet or b jet and either one lepton (e,μ), photon, or second light jet or b jet in the anomalous regions. No significant deviations from the background hypotheses are observed. Limits on contributions from generic Gaussian signals with various widths of the resonance mass are obtained for nine invariant masses in the anomalous regions.

Guidelines for inhaled sedation in the ICU

INTRODUCTION AND OBJECTIVES

Sedation is used in intensive care units (ICU) to improve comfort and tolerance during mechanical ventilation, invasive interventions, and nursing care. In recent years, the use of inhalation anaesthetics for this purpose has increased. Our objective was to obtain and summarise the best evidence on inhaled sedation in adult patients in the ICU, and use this to help physicians choose the most appropriate approach in terms of the impact of sedation on clinical outcomes and the risk-benefit of the chosen strategy.

METHODOLOGY

Given the overall lack of literature and scientific evidence on various aspects of inhaled sedation in the ICU, we decided to use a Delphi method to achieve consensus among a group of 17 expert panellists. The processes was conducted over a 12-month period between 2022 and 2023, and followed the recommendations of the CREDES guidelines.

RESULTS

The results of the Delphi survey form the basis of these 39 recommendations - 23 with a strong consensus and 15 with a weak consensus.

CONCLUSION

The use of inhaled sedation in the ICU is a reliable and appropriate option in a wide variety of clinical scenarios. However, there are numerous aspects of the technique that require further study.

Observation of WZγ Production in pp Collisions at sqrt[s]=13 TeV with the ATLAS Detector

This Letter reports the observation of WZγ production and a measurement of its cross section using 140.1±1.2  fb^{-1} of proton-proton collision data recorded at a center-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. The WZγ production cross section, with both the W and Z bosons decaying leptonically, pp→WZγ→ℓ^{'}^{±}νℓ^{+}ℓ^{-}γ (ℓ^{(^{'})}=e, μ), is measured in a fiducial phase-space region defined such that the leptons and the photon have high transverse momentum and the photon is isolated. The cross section is found to be 2.01±0.30(stat)±0.16(syst)  fb. The corresponding standard model predicted cross section calculated at next-to-leading order in perturbative quantum chromodynamics and at leading order in the electroweak coupling constant is 1.50±0.06  fb. The observed significance of the WZγ signal is 6.3σ, compared with an expected significance of 5.0σ.

Combined Measurement of the Higgs Boson Mass from the H→γγ and H→ZZ^{*}→4ℓ Decay Channels with the ATLAS Detector Using sqrt[s]=7, 8, and 13 TeV pp Collision Data

A measurement of the mass of the Higgs boson combining the H→ZZ^{*}→4ℓ and H→γγ decay channels is presented. The result is based on 140  fb^{-1} of proton-proton collision data collected by the ATLAS detector during LHC run 2 at a center-of-mass energy of 13 TeV combined with the run 1 ATLAS mass measurement, performed at center-of-mass energies of 7 and 8 TeV, yielding a Higgs boson mass of 125.11±0.09(stat)±0.06(syst)=125.11±0.11  GeV. This corresponds to a 0.09% precision achieved on this fundamental parameter of the Standard Model of particle physics.

Search for Dark Photons in Rare Z Boson Decays with the ATLAS Detector

A search for events with a dark photon produced in association with a dark Higgs boson via rare decays of the standard model Z boson is presented, using 139  fb^{-1} of sqrt[s]=13  TeV proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider. The dark boson decays into a pair of dark photons, and at least two of the three dark photons must each decay into a pair of electrons or muons, resulting in at least two same-flavor opposite-charge lepton pairs in the final state. The data are found to be consistent with the background prediction, and upper limits are set on the dark photon's coupling to the dark Higgs boson times the kinetic mixing between the standard model photon and the dark photon, α_{D}ϵ^{2}, in the dark photon mass range of [5, 40] GeV except for the ϒ mass window [8.8, 11.1] GeV. This search explores new parameter space not previously excluded by other experiments.

Observation of Single-Top-Quark Production in Association with a Photon Using the ATLAS Detector

This Letter reports the observation of single top quarks produced together with a photon, which directly probes the electroweak coupling of the top quark. The analysis uses 139  fb^{-1} of 13 TeV proton-proton collision data collected with the ATLAS detector at the Large Hadron Collider. Requiring a photon with transverse momentum larger than 20 GeV and within the detector acceptance, the fiducial cross section is measured to be 688±23(stat) _{-71}^{+75}(syst)  fb, to be compared with the standard model prediction of 515_{-42}^{+36}  fb at next-to-leading order in QCD.

Measurement of Suppression of Large-Radius Jets and Its Dependence on Substructure in Pb+Pb Collisions at sqrt[s_{NN}]=5.02 TeV with the ATLAS Detector

This letter presents a measurement of the nuclear modification factor of large-radius jets in sqrt[s_{NN}]=5.02  TeV Pb+Pb collisions by the ATLAS experiment. The measurement is performed using 1.72  nb^{-1} and 257  pb^{-1} of Pb+Pb and pp data, respectively. The large-radius jets are reconstructed with the anti-k_{t} algorithm using a radius parameter of R=1.0, by reclustering anti-k_{t} R=0.2 jets, and are measured over the transverse momentum (p_{T}) kinematic range of 158 Collapse

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Measurement of the Sensitivity of Two-Particle Correlations in pp Collisions to the Presence of Hard Scatterings

A key open question in the study of multiparticle production in high-energy pp collisions is the relationship between the "ridge"-i.e., the observed azimuthal correlations between particles in the underlying event that extend over all rapidities-and hard or semihard scattering processes. In particular, it is not known whether jets or their soft fragments are correlated with particles in the underlying event. To address this question, two-particle correlations are measured in pp collisions at sqrt[s]=13  TeV using data collected by the ATLAS experiment at the LHC, with an integrated luminosity of 15.8  pb^{-1}, in two different configurations. In the first case, charged particles associated with jets are excluded from the correlation analysis, while in the second case, correlations are measured between particles within jets and charged particles from the underlying event. Second-order flow coefficients, v_{2}, are presented as a function of event multiplicity and transverse momentum. These measurements show that excluding particles associated with jets does not affect the measured correlations. Moreover, particles associated with jets do not exhibit any significant azimuthal correlations with the underlying event, ruling out hard processes contributing to the ridge.

Observation of an Excess of Dicharmonium Events in the Four-Muon Final State with the ATLAS Detector

A search is made for potential ccc[over ¯]c[over ¯] tetraquarks decaying into a pair of charmonium states in the four muon final state using proton-proton collision data at sqrt[s]=13  TeV, corresponding to an integrated luminosity of 140  fb^{-1} recorded by the ATLAS experiment at LHC. Two decay channels, J/ψ+J/ψ→4μ and J/ψ+ψ(2S)→4μ, are studied. Backgrounds are estimated based on a hybrid approach involving Monte Carlo simulations and data-driven methods. Statistically significant excesses with respect to backgrounds dominated by the single parton scattering are seen in the di-J/ψ channel consistent with a narrow resonance at 6.9 GeV and a broader structure at lower mass. A statistically significant excess is also seen in the J/ψ+ψ(2S) channel. The fitted masses and decay widths of the structures are reported.

Observation of the γγ→ττ Process in Pb+Pb Collisions and Constraints on the τ-Lepton Anomalous Magnetic Moment with the ATLAS Detector

This Letter reports the observation of τ-lepton-pair production in ultraperipheral lead-lead collisions Pb+Pb→Pb(γγ→ττ)Pb and constraints on the τ-lepton anomalous magnetic moment a_{τ}. The dataset corresponds to an integrated luminosity of 1.44  nb^{-1} of LHC Pb+Pb collisions at sqrt[s_{NN}]=5.02  TeV recorded by the ATLAS experiment in 2018. Selected events contain one muon from a τ-lepton decay, an electron or charged-particle track(s) from the other τ-lepton decay, little additional central-detector activity, and no forward neutrons. The γγ→ττ process is observed in Pb+Pb collisions with a significance exceeding 5 standard deviations and a signal strength of μ_{ττ}=1.03_{-0.05}^{+0.06} assuming the standard model value for a_{τ}. To measure a_{τ}, a template fit to the muon transverse-momentum distribution from τ-lepton candidates is performed, using a dimuon (γγ→μμ) control sample to constrain systematic uncertainties. The observed 95% confidence-level interval for a_{τ} is -0.057 Collapse

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Methods for Heart Rate Variability Biofeedback (HRVB): A Systematic Review and Guidelines

Heart Rate Variability Biofeedback (HRVB) has been widely used to improve cardiovascular health and well-being. HRVB is based on breathing at an individual's resonance frequency, which stimulates respiratory sinus arrhythmia (RSA) and the baroreflex. There is, however, no methodological consensus on how to apply HRVB, while details about the protocol used are often not well reported. Thus, the objectives of this systematic review are to describe the different HRVB protocols and detect methodological concerns. PsycINFO, CINALH, Medline and Web of Science were searched between 2000 and April 2021. Data extraction and quality assessment were based on PRISMA guidelines. A total of 143 studies were finally included from any scientific field and any type of sample. Three protocols for HRVB were found: (i) "Optimal RF" (n = 37), each participant breathes at their previously detected RF; (ii) "Individual RF" (n = 48), each participant follows a biofeedback device that shows the optimal breathing rate based on cardiovascular data in real time, and (iii) "Preset-pace RF" (n = 51), all participants breathe at the same rate rate, usually 6 breaths/minute. In addition, we found several methodological differences for applying HRVB in terms of number of weeks, duration of breathing or combination of laboratory and home sessions. Remarkably, almost 2/3 of the studies did not report enough information to replicate the HRVB protocol in terms of breathing duration, inhalation/exhalation ratio, breathing control or body position. Methodological guidelines and a checklist are proposed to enhance the methodological quality of future HRVB studies and increase the information reported.

Strong Constraints on Jet Quenching in Centrality-Dependent p+Pb Collisions at 5.02 TeV from ATLAS

Jet quenching is the process of color-charged partons losing energy via interactions with quark-gluon plasma droplets created in heavy-ion collisions. The collective expansion of such droplets is well described by viscous hydrodynamics. Similar evidence of collectivity is consistently observed in smaller collision systems, including pp and p+Pb collisions. In contrast, while jet quenching is observed in Pb+Pb collisions, no evidence has been found in these small systems to date, raising fundamental questions about the nature of the system created in these collisions. The ATLAS experiment at the Large Hadron Collider has measured the yield of charged hadrons correlated with reconstructed jets in 0.36  nb^{-1} of p+Pb and 3.6  pb^{-1} of pp collisions at 5.02 TeV. The yields of charged hadrons with p_{T}^{ch}>0.5  GeV near and opposite in azimuth to jets with p_{T}^{jet}>30 or 60 GeV, and the ratios of these yields between p+Pb and pp collisions, I_{pPb}, are reported. The collision centrality of p+Pb events is categorized by the energy deposited by forward neutrons from the struck nucleus. The I_{pPb} values are consistent with unity within a few percent for hadrons with p_{T}^{ch}>4  GeV at all centralities. These data provide new, strong constraints that preclude almost any parton energy loss in central p+Pb collisions.

Search for Heavy Neutral Leptons in Decays of W Bosons Using a Dilepton Displaced Vertex in sqrt[s]=13 TeV pp Collisions with the ATLAS Detector

A search for a long-lived, heavy neutral lepton (N) in 139  fb^{-1} of sqrt[s]=13  TeV pp collision data collected by the ATLAS detector at the Large Hadron Collider is reported. The N is produced via W→Nμ or W→Ne and decays into two charged leptons and a neutrino, forming a displaced vertex. The N mass is used to discriminate between signal and background. No signal is observed, and limits are set on the squared mixing parameters of the N with the left-handed neutrino states for the N mass range 3  GeV Collapse

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Test of CP Invariance in Higgs Boson Vector-Boson-Fusion Production Using the H→γγ Channel with the ATLAS Detector

A test of CP invariance in Higgs boson production via vector-boson fusion has been performed in the H→γγ channel using 139  fb^{-1} of proton-proton collision data at sqrt[s]=13  TeV collected by the ATLAS detector at the LHC. The optimal observable method is used to probe the CP structure of interactions between the Higgs boson and electroweak gauge bosons, as described by an effective field theory. No sign of CP violation is observed in the data. Constraints are set on the parameters describing the strength of the CP-odd component in the coupling between the Higgs boson and the electroweak gauge bosons in two effective field theory bases: d[over ˜] in the HISZ basis and c_{HW[over ˜]} in the Warsaw basis. The results presented are the most stringent constraints on CP violation in the coupling between Higgs and weak bosons. The 95% C.L. constraint on d[over ˜] is derived for the first time and the 95% C.L. constraint on c_{HW[over ˜]} has been improved by a factor of 5 compared to the previous measurement.

Agro-physiological and soil microbial responses to desalinated seawater irrigation in two crops

Irrigation with desalinated seawater (DSW) is a potential solution for addressing water scarcity in semiarid regions across the globe. However, this strategy may compromise the health of agricultural ecosystems due to the high content of phytotoxic elements (mainly boron, B) in this water. Here, a three-year experiment was carried to evaluate the response of the soil's physicochemical and microbiological properties, and plant physiology, to three irrigation water treatments (DSW; fresh water, FW; and their blend (1:1), BW) in the presence or not of organic amendments. Lemon trees (Citrus limon (L.) Burm. fil. cv. Eureka), with a higher sensitivity to B toxicity, and apricot trees (Prunus armeniaca L. cv. 'Búlida'), with a lower one, were used as model plants. Lemon trees irrigated with BW and DSW showed a decline in net photosynthesis and stomatal conductance, and an accumulation of B in leaves that exceeded the toxicity threshold. These effects were stronger in amended soils. In soils cultivated with lemon trees, DSW irrigation increased the water-soluble nitrogen content, the urease activity, and the activity and biomass of the microbial community, and shifted the microbial community structure as compared with the other water treatments. The soil microbial community responses were controlled by the addition of organic amendments. The irrigation of apricots with DSW did not negatively impact plant physiological parameters but increased the soil microbial biomass, as in the case of the lemon tree-soil system. These results suggest that DSW irrigation increases soil microbial biomass in both crop-soil systems but harms the physiological status of the most sensitive crop. Our findings provide an initial approach to evaluate the response of the plant-soil system to DSW.

Evaluation of the position of the permanent maxillary canine and its relationship to dental anomaly patterns in the paediatric patient

AIM

To evaluate the prevalence of ectopic eruption of the permanent maxillary canine in patients 6 to 10 years of age and its relationship to other dental anomalies, age and sex of the patient.

MATERIALS

Study design: Descriptive, cross-sectional, observational, and retrospective study METHODS: A total of 260 panoramic radiographs were collected from patients who had their first visit at the Paediatric Dentistry Department of the Hospital HM Nens, HM Hospitals in Barcelona from January to May 2021. The prevalence of ectopic eruption was evaluated based on the following variables: age, sex, inclination angle and mesiodistal position of the crown of the permanent maxillary canine. Additionally, the presence of other dental anomalies was recorded. The statistical analysis to evaluate the relationship between two categorical variables was carried out using the Chi-square (or Fisher) test with unrelated samples and the Mann-Whitney test with related samples. A p-value of 0.05 and a 95% reliability level were considered statistically significant.

CONCLUSION

The prevalence of ectopic eruption of the permanent maxillary canine was 9.23%. In this sample, no relationship was found between patients with maxillary canine with abnormal position and inclination and the presence of other dental anomalies.

Trypanosoma cruzi pathogenicity involves virulence factor expression and upregulation of bioenergetic and biosynthetic pathways

The molecular repertoire of Trypanosoma cruzi effects its virulence and impacts the clinical course of the resulting Chagas disease. This study aimed to determine the mechanism underlying the pathogenicity of T. cruzi. Two T. cruzi cell lines (C8C3hvir and C8C3lvir), obtained from the clone H510 C8C3 and exhibiting different virulence phenotypes, were used to evaluate the parasite's infectivity in mice. The organ parasite load was analysed by qPCR. The proteomes of both T. cruzi cell lines were compared using nLC-MS/MS. Cruzipain (Czp), complement regulatory protein (CRP), trans-sialidase (TS), Tc-85, and sialylated epitope expression levels were evaluated by immunoblotting. High-virulence C8C3hvir was highly infectious in mice and demonstrated three to five times higher infectivity in mouse myocardial cells than low-virulence C8C3lvir. qPCR revealed higher parasite loads in organs of acute as well as chronically C8C3hvir-infected mice than in those of C8C3lvir-infected mice. Comparative quantitative proteomics revealed that 390 of 1547 identified proteins were differentially regulated in C8C3hvir with respect to C8C3lvir. Amongst these, 174 proteins were upregulated in C8C3hvir and 216 were downregulated in C8C3lvir. The upregulated proteins in C8C3hvir were associated with the tricarboxylic acid cycle, ribosomal proteins, and redoxins. Higher levels of Czp, CRP, TS, Tc-85, and sialylated epitopes were expressed in C8C3hvir than in C8C3lvir. Thus, T. cruzi virulence may be related to virulence factor expression as well as upregulation of bioenergetic and biosynthetic pathways proteins.

CatLC: Catalonia Multiresolution Land Cover Dataset

The availability of large annotated image datasets represented one of the tipping points in the progress of object recognition in the realm of natural images, but other important visual spaces are still lacking this asset. In the case of remote sensing, only a few richly annotated datasets covering small areas are available. In this paper, we present the Catalonia Multiresolution Land Cover Dataset (CatLC), a remote sensing dataset corresponding to a mid-size geographical area which has been carefully annotated with a large variety of land cover classes. The dataset includes pre-processed images from the Cartographic and Geological Institute of Catalonia (ICGC) ( https://www.icgc.cat/en/Downloads ) and the European Space Agency (ESA) ( https://scihub.copernicus.eu ) catalogs, captured from both aircraft and satellites. Detailed topographic layers inferred from other sensors are also included. CatLC is a multiresolution, multimodal, multitemporal dataset, that can be readily used by the machine learning community to explore new classification techniques for land cover mapping in different scenarios such as area estimation in forest inventories, hydrologic studies involving microclimatic variables or geologic hazards identification and assessment. Moreover, remote sensing data present some specific characteristics that are not shared by natural images and that have been seldom explored. In this vein, CatLC dataset aims to engage with computer vision experts interested in remote sensing and also stimulate new research and development in the field of machine learning.

Observation of WWW Production in pp Collisions at sqrt[s]=13 TeV with the ATLAS Detector

This Letter reports the observation of WWW production and a measurement of its cross section using 139  fb^{-1} of proton-proton collision data recorded at a center-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. Events with two same-sign leptons (electrons or muons) and at least two jets, as well as events with three charged leptons, are selected. A multivariate technique is then used to discriminate between signal and background events. Events from WWW production are observed with a significance of 8.0 standard deviations, where the expectation is 5.4 standard deviations. The inclusive WWW production cross section is measured to be 820±100 (stat)±80 (syst)  fb, approximately 2.6 standard deviations from the predicted cross section of 511±18  fb calculated at next-to-leading-order QCD and leading-order electroweak accuracy.

A detailed map of Higgs boson interactions by the ATLAS experiment ten years after the discovery

The standard model of particle physics1-4 describes the known fundamental particles and forces that make up our Universe, with the exception of gravity. One of the central features of the standard model is a field that permeates all of space and interacts with fundamental particles5-9. The quantum excitation of this field, known as the Higgs field, manifests itself as the Higgs boson, the only fundamental particle with no spin. In 2012, a particle with properties consistent with the Higgs boson of the standard model was observed by the ATLAS and CMS experiments at the Large Hadron Collider at CERN10,11. Since then, more than 30 times as many Higgs bosons have been recorded by the ATLAS experiment, enabling much more precise measurements and new tests of the theory. Here, on the basis of this larger dataset, we combine an unprecedented number of production and decay processes of the Higgs boson to scrutinize its interactions with elementary particles. Interactions with gluons, photons, and W and Z bosons-the carriers of the strong, electromagnetic and weak forces-are studied in detail. Interactions with three third-generation matter particles (bottom (b) and top (t) quarks, and tau leptons (τ)) are well measured and indications of interactions with a second-generation particle (muons, μ) are emerging. These tests reveal that the Higgs boson discovered ten years ago is remarkably consistent with the predictions of the theory and provide stringent constraints on many models of new phenomena beyond the standard model.

AB0266 PREGNANCY PLANNING AND FOLLOW-UP IN MULTIDISCIPLINARY UNITS IMPROVES THE OUTCOMES IN WOMEN WITH INFLAMMATORY ARTHROPATHIES

Background

Women with inflammatory arthropaties (IA) have fertility problems and complications during pregnancy and frequently biological therapy (BT) is required for the disease control.

Objectives

To evaluate pregnancy in women with IA in a multidisciplinary unit composed of Rheumatologists and Obstetricians: describe disease evolution, complications and treatment.

Methods

Retrospective and descriptive study of the evolution of pregnancy in patients with IA [Rheumatoid Arthritis (RA), Spondyloarthritis (SpA), Psoriatic arthritis (PsA) and Juvenile Idiopathic Arthritis (JIA)] and follow-up in a multidisciplinary unit for more than 15 years (until December 2021). Demographics, maternal disease, time until conception, previous abortions and presence of antibodies were collected. In addition, during follow-up, treatment, abortions, cesarean sections (C-section), preterm births, disease activity and maternal/fetal complications were collected.

Results

We registered 49 pregnancies (39 women): 27 RA (55.1%), 9 SpA (18.4%), 9 PsA (18.4%) and 4 JIA (8.1%). Maternal average age at diagnosis was 26.8±6.7 years and average age at childbirth/abortion was 34.5±5.3 years.

It took an average time of 9±7.7 months to conceive. 8.2% received fertility treatment with in vitro fertilization techniques.

AntiRo antibodies were registered in 6.3% of patients and 28.6% had at least 1 antiphospholipid antibody.

At the time of gestational desire/gestation 24 women (13 RA, 5 SpA, 3 PsA, 3 JIA) were receiving BT: 14 certolizumab (CZP), 5 adalimumab (ADA), 4 etanercept (ETN). 1 patient was being treated with baricitinib (BARI). Due to pregnancy, ADA was changed to CZP in 3 women and BT was stopped in 6 cases (3 ETN, 2 ADA, 1 CZP) as well as BARI. In 2 cases, ADA was stopped at week 17 of pregnancy (medical indication). Pregnancy was completed with BT (CZP) in 15 cases.

9 abortions were registered prior to follow-up in the unit (0.23 abortions/mother) and 3 (2 RA, 1 PsA) during follow-up (0.07 abortions/mother): 2 (1 RA, 1 PsA) of them in women with CZP. RA patient had positive antiphospholipid antibodies and was a smoker and the other one had moderate disease activity by the time of the abortion. C-section was performed in 26.1% of cases. Preterm birth (<37 weeks) happened in 8.2% (n: 4) of the pregnancies: 2 in women with CZP.

A total of 19 different fetal/maternal complications were registered during follow-up: 8 in the BT group (42.1%) compared to 11 (57.9%) in the group without BT, being Intrauterine Growth Restriction (IUGR) more frequent among women with BT. Infections were not more common in patients with BT. Table 1.

Table 1.COMPLICATIONSWITH BT (n, %) n: 17WITHOUT BT (n, %) n: 32IUGR3 (17.6)1 (3.1)LBW2 (11.8)2 (6.2)INFECTION1 (5.9)4 (12.5)CHOLESTASIS0 (0)2 (6.2)PREECLAMPSIA0 (0)1 (3.1)DM2 (11.8)1 (3.1)HIGH BLOOD PRESSURE0 (0)0 (0)NEPHROPATY0 (0)0 (0)NEONATAL LUPUS0 (0)0 (0)HEART BLOCK0 (0)0 (0)MALFORMATION0 (0)0 (0)HELLP SYNDROME0 (0)0 (0)TOTAL811

Regarding concomitant treatment, low dose prednisone was used in 32.7% of pregnancies, hydroxychloroquine in 44.9%, sulfasalazine in 8.2% and acetylsalicylic acid in 51%. We didn´t find differences in the use of these treatments between the two groups.

Median DAS28 among RA patients with available data was under 2.6 throughout pregnancy as well as previously and posteriorly. No differences in median DAS28 were found between women with BT and without BT. SpA patients had BASDAI lower than 4 in both groups during pregnancy and previously.

Conclusion

In our series, as described in the literature, women with IA are older and more likely to have preterm births compared to general population. Appropriate disease control was maintained during pregnancy, also previously and afterwards. We registered more IUGR, low birth weight (LBW) and diabetes mellitus (DM) among women with BT but lower rate of infections. Given the low number of patients with BT no statistically significant conclusions about complications can be drawn. Therefore, more studies among pregnant women with BT are necessary.

Disclosure of Interests

None declared

Breast cancer in young women in Guatemala: A retrospective comparative cohort study

e13523

Background: In Guatemala, breast cancer is the most common malignancy among women, the socioeconomic variability among the population directly affects the access to screening and treatment, and little is known about the behavior of the disease among younger women, reason why the aim of our study is to describe the clinico-pathological characteristics in this population. Methods: Retrospective study performed of patients with a confirmed biopsy of breast cancer that were treated at Liga Nacional Contra el Cáncer - INCAN in Guatemala, the largest cancer center in the country. From medical records, we obtained: clinico-pathological and treatment (surgery, radiotherapy, endocrine therapy) data and compared results between ≤40 years and >40 years old women. Results: The study identified 1,347 patients, 190 (16.42%) ≤40 years old women and 1,157 (83.57%) >40 years old. The mean age at diagnosis among patients was 36 vs. 56 years old, respectively (p<0.01). According to our findings, even though most patients came from the region I of the country that is the capital city, there was a higher percentage of patients from the West regions (VI, VII) that belonged to the younger group 22.22% vs 10.58%. Furthermore, 74.4% of ≤40 years old patients were staged as locally advanced or metastatic vs >40 year old patients (48.04%), and 65.34% of ≤40 years old were found to have triple negative and Her2 enriched subtypes vs 46.13% in >40 years old (p<0.01). Conclusions: Young breast cancer patients in Guatemala are characterized by being diagnosed at locally advanced and advanced stages of the disease with more biologically aggressive subtypes such as triple negative and her2 enriched. [Table: see text]

POS1482-HPR ASYNCHRONOUS TELECONSULTATION BY WHATSAPP CHATBOT IN CONTROLLED AXIAL SPONDYLOARTHRITIS (SPA) PATIENTS UNDER BIOLOGICAL THERAPY: 10 MONTHS EXPERIENCE AT A SINGLE CENTRE

Background

The use of telehealth in the control of rheumatic diseases had been scarce, but COVID pandemic forced rheumatologists to try alternatives to classic face-to-face consultation. In times of lockdown phone calls and video calls were easy to perform, but later on an asynchronous model of teleconsultation would probably fit better. The purpose of this study is to prove that asynchronous whatsapp teleconsultation is an effective alternative to classic healthcare consultation models out of pandemic. So, we selected axial spondyloarthritis (SPA) patients with stable controlled disease under biological therapy and we offered teleconsultation with a whatsapp platform chatbot, that´s been created for this purpose as a way to send PROMS (BASDAI, VAS for patient global disease assesment, ASDAS, and 3 questions for extraarticular disease), and receive feedback and schedule for the following visits

Objectives

To prove that teleconsultation through whatsapp platform was not inferior to face-to-face consultation in terms of mantaining axial SPA patients disease under control. And to prove that teleconsultation model was less time and resources consuming for the patient and the system, and probably preferred by a group of patients.

Methods

Prospective study with retrospective control of patients diagnosed of Axial SPA, fullfilling ASAS criteria and with stable disease under biological therapy for the previous year, recruited from 01 jan to 30 nov 2021. We offered them two teleconsultation visits using their personal mobile device, once every four months and a face-to-face visit at the end of the study (one year since inclusion). If there is a deviation in the lab test or PROMs or if the patient asks for contact (via whatsapp) he is called up by the person in charge (nurse/doctor) that solves the question and arranges an aditional presential visit when needed. We consider disease controlled if BASDAI <4, ASDAS < 2,1 or if in rheumatologist´s opinion there is no need to change treatment. We collect patient and disease information (age, gender, employment, use of mobile devices, duration and characteristics of the disease, previous and actual treatment), activity (BASDAI, PCR, ASDAS), physical function (BASFI), Quality of life (AsQol) ansd productivity (WAPAI), and we also check number of face-to-face and phone consultations and patient´s preferences.

Results

62 patients (52 men and 10 women) were recruited, mean aged 47,7 years (range 26-72), 36% were under 45 years at the time of inclusion. They were mostly Ankylosing Spondylitis (AS) (90%; only 6 non radiographic SPA), positive HLA B27 (90%) and with longstading disease (mean 24 years), and only 6 patients less than five years. 16% had peripheral involvement (arthritis/dactylitis), and 40% presented extraarticular manifestations, mainly uveitis (20%). 70% were under their first biological (TNF inhbitor, mostly adalimumab), 24% were refractory to the first, 3 patients to 2 previous biologicals and just 1 patient was refractoy to 5. 50% of patients were treated with tapered dose of TNF inhibitors.

We have now a mean followup of 10 months, in which we have had 109 scheduled teleconsultations with aditional need of 36 phone calls and 10 aditional presential visits for the whole group. To date, 3 patients with reduced dose increased to standard dose of biological drug and none change of biological was required.

Conclusion

Asynchronous teleconsultation seems promising, specially for followup in patients with stable rheumatic disease, less interfering with daily activities, less time consuming for the patient and less resource consuming for healthcare systems, with no impairment of disease control and quailty of healthcare. This study will also show patient´s preference, and we´ll try to describe a profile of patient more prone to teleconsultation.

References

[1]Song Y, Bernard L, Jorgensen C, Dusfour G, Pers YM. The Challenges of Telemedicine in Rheumatology. Front Med (Lausanne). 2021 Oct 13;8:746219. doi: 10.3389/fmed.2021.746219.

Acknowledgements

In behalf of INNOBIDE working group

Disclosure of Interests

Maria Luz García-Vivar Grant/research support from: Novartis provided a grant for this study, Natalia Rivera: None declared, E. Galíndez-Agirregoikoa: None declared, EDUARDO CUENDE: None declared, ANA ROSA INTXAURBE PELLEJERO: None declared, Juan Maria Blanco Madrigal: None declared, L Vega: None declared, C García: None declared, MARIA ENJUANES: None declared, María Jesús Allande: None declared, OLAIA BEGOÑA FERNANDEZ BERRIZBEITIA: None declared, Rosa Exposito: None declared, MARIA ESTHER RUIZ LUCEA: None declared, Ignacio Torre-Salaberri: None declared

Screnning of viral hepatitis in mental disorder patients: Psiqui-Clinic Programme

Introduction

The WHO would increase diagnosis and treatment of viral hepatitis in the world by 2030, based on the high efficacy of direct-acting-antivirals against HCV, extended vaccination programs in HBC, and epidemiological data. Diagnostic of HCV/HBV infection has been simplified by point-of-care (POC) devices (cheap/easy-to-use/interprete/qick-results), detecting anti-HCV-antibodies or HBV-antigen in capillary blood at the patients´site. The current seroprevalence of viral hepatitis B/C in general population in Spain is 0.5%/1% and would be higher (3-17%) in people with severe-mental-disorder due to risk factors and traditionally less access to health care.

Objectives

To design a screening protocol for HCV eradication and HBV-detection, and risk factors among severe-mental-disorder patients in a CommunityMentalHealthCenter. To guarantee equal access to viral hepatitis screening and therapy among this population.

Methods

Outpatients visited along one-year who accepts participate. Using POC-device for qualitative detection of anti-HCV-antibodies (Quickview-of-Lumiquick-Diagnostics®)/HBsAG (Abbott-Rapid-Diagnostics®). Socio-demographic data; mental disorder(ICD-10); HCV/HBV risk-factors; Neurotoxicity-scale (mood/cognition/sleep/gastrointestinal/sickness/motor); SF-12; Patient-satisfaction. Subjects with positive HCV/HBV POC-test will have a on-site venopuncture to assess hemograme/liver tests, and HCV-RNA (Cobas-TaqMan-RocheDiagnostics)/HBsAg-ELISA (Atellica-Siemens). In positive HCV-RNA (active infection) the psychiatric-team will inform the hepatology-team for non-invasive liver fibrosis assessment and DAA prescription. The patient will receive 8-12-weeks on-site treatment, and assessed (Neurotoxicity/SF-12).HCV cure will be confirmed by HCV-RNA in blood. Chronic-cases will be managed at Hepatology-Unit.

Results

We will present the results of the implementation of the programme and their ability to detect viral-hepatitis-positive cases among patients with severe-mental-disorders and to treat them effectively.

Conclusions

Our results may support the generalisation of the programme in among CMHC’s.

Disclosure

No significant relationships.

Saccharomyces cerevisiae como alternativa de reemplazo a los antibióticos promotores de crecimiento en alimentación animal

El presente trabajo de revisión bibliográfica, exhibe el mecanismo de acción, modo de empleo, dosis utilizadas y beneficios demostrados por Saccharomyces cerevisiae en animales de producción comercial. Varios estudios demuestran que la levadura se utiliza en diferentes dosis y concentraciones como cultivo (probiótico) o sus paredes celulares (prebiótico), atribuyendo impacto positivo de S. cerevisiae sobre los parámetros productivos y reproductivos de los animales, incremento en la digestibilidad de nutrientes, mejoras sobre las variables de morfometria intestinal, regulación del pH ruminal, modulación de la población microbiana, beneficios en el sistema inmunológico, disminución en la concentración de amoniaco, entre otros; no obstante, se debe considerar que la acción benéfica de la levadura difiere por el pH, temperatura de extracción, composición nutricional, cepa utilizada, dosis, concentración, modo de empleo y por la diversidad de dietas ofrecidas a los animales. Los resultados obtenidos en investigaciones recientes conllevan a concluir que, el uso de Saccharomyces cerevisiae como aditivo en la alimentación animal puede sustituir a los antibióticos promotores de crecimiento, logrando similares resultados a los APC, sin dejar residuos en los productos y subproductos de los animales que resulten perjudiciales al consumidor.

Search for Lepton-Flavor Violation in Z-Boson Decays with τ Leptons with the ATLAS Detector

A search for lepton-flavor-violating Z→eτ and Z→μτ decays with pp collision data recorded by the ATLAS detector at the LHC is presented. This analysis uses 139  fb^{-1} of Run 2 pp collisions at sqrt[s]=13  TeV and is combined with the results of a similar ATLAS search in the final state in which the τ lepton decays hadronically, using the same data set as well as Run 1 data. The addition of leptonically decaying τ leptons significantly improves the sensitivity reach for Z→ℓτ decays. The Z→ℓτ branching fractions are constrained in this analysis to B(Z→eτ)<7.0×10^{-6} and B(Z→μτ)<7.2×10^{-6} at 95% confidence level. The combination with the previously published analyses sets the strongest constraints to date: B(Z→eτ)<5.0×10^{-6} and B(Z→μτ)<6.5×10^{-6} at 95% confidence level.

Search for New Phenomena in Final States with Two Leptons and One or No b-Tagged Jets at sqrt[s]=13 TeV Using the ATLAS Detector

A search for new phenomena is presented in final states with two leptons and one or no b-tagged jets. The event selection requires the two leptons to have opposite charge, the same flavor (electrons or muons), and a large invariant mass. The analysis is based on the full run-2 proton-proton collision dataset recorded at a center-of-mass energy of sqrt[s]=13  TeV by the ATLAS experiment at the LHC, corresponding to an integrated luminosity of 139  fb^{-1}. No significant deviation from the expected background is observed in the data. Inspired by the B-meson decay anomalies, a four-fermion contact interaction between two quarks (b, s) and two leptons (ee or μμ) is used as a benchmark signal model, which is characterized by the energy scale and coupling, Λ and g_{*}, respectively. Contact interactions with Λ/g_{*} lower than 2.0 (2.4) TeV are excluded for electrons (muons) at the 95% confidence level, still far below the value that is favored by the B-meson decay anomalies. Model-independent limits are set as a function of the minimum dilepton invariant mass, which allow the results to be reinterpreted in various signal scenarios.

Clinical and molecular characterization of Chilean patients with X-linked hypophosphatemia

We report the most comprehensive clinical and molecular characterization of XLH patients performed in Chile. We show high prevalence of musculoskeletal burden and pain, associated with significantly impaired physical capacity and quality of life, with many relevant complications presenting more frequently than previously reported in cohorts from developed countries.

INTRODUCTION

Our current understanding of the clinical presentation and natural history of X-linked hypophosphatemia (XLH) comes mainly from cohorts from developed countries, with limited data on the clinical and genetic abnormalities of XLH patients in South America.

OBJECTIVE

To describe the clinical, biochemical, and molecular presentation of patients with XLH in Chile.

METHODS

Patients with XLH referred by endocrinologist throughout Chile were included. Demographic data and clinical presentation were obtained from a clinical interview. Surveys were applied for quality of life (QoL), pain, and functionality. FGF23 was measured by ELISA, and genetic testing was performed. Imaging studies were conducted to assess skeletal and renal involvement.

RESULTS

We included 26 patients, aged 2-64 years, from 17 unrelated Chilean families. All pediatric patients but only 40% of adults were receiving conventional therapy, while 65% of all patients had elevated alkaline phosphatase. All patients had mutations in PHEX, including 5 novel variants. Radiographic skeletal events (RSE) and enthesopathies in adults were frequent (34% and 85%, respectively). The duration of treatment was associated with fewer RSE (p < 0.05). Most adults reported pain and impaired QoL, and 50% had impaired physical capacity. The number of enthesopathies was associated with worse pain and stiffness scores (p < 0.05).

CONCLUSION

Chilean patients with XLH have a high prevalence of musculoskeletal burden associated with pain and impaired physical capacity and QoL, especially in adults who were generally undertreated. These data identify a significant unmet need, inform our understanding of the current status of patients, and can guide care for XLH patients in similarly socioeconomically defined countries.

Search for Displaced Leptons in sqrt[s]=13 TeV pp Collisions with the ATLAS Detector

A search for charged leptons with large impact parameters using 139  fb^{-1} of sqrt[s]=13  TeV pp collision data from the ATLAS detector at the LHC is presented, addressing a long-standing gap in coverage of possible new physics signatures. Results are consistent with the background prediction. This search provides unique sensitivity to long-lived scalar supersymmetric lepton partners (sleptons). For lifetimes of 0.1 ns, selectron, smuon, and stau masses up to 720, 680, and 340  GeV, respectively, are excluded at 95% confidence level, drastically improving on the previous best limits from LEP.

Soil microbial diversity-biomass relationships are driven by soil carbon content across global biomes

The relationship between biodiversity and biomass has been a long standing debate in ecology. Soil biodiversity and biomass are essential drivers of ecosystem functions. However, unlike plant communities, little is known about how the diversity and biomass of soil microbial communities are interlinked across globally distributed biomes, and how variations in this relationship influence ecosystem function. To fill this knowledge gap, we conducted a field survey across global biomes, with contrasting vegetation and climate types. We show that soil carbon (C) content is associated to the microbial diversity-biomass relationship and ratio in soils across global biomes. This ratio provides an integrative index to identify those locations on Earth wherein diversity is much higher compared with biomass and vice versa. The soil microbial diversity-to-biomass ratio peaks in arid environments with low C content, and is very low in C-rich cold environments. Our study further advances that the reductions in soil C content associated with land use intensification and climate change could cause dramatic shifts in the microbial diversity-biomass ratio, with potential consequences for broad soil processes.

Abstract 110: Colon Cancer in Patients under 50 in Guatemala: A Retrospective Comparative Cohort Study

Purpose: Describing and comparing clinico-pathological characteristics of younger (&lt;50 years) versus older (≥50 years) colon cancer patients treated at the Guatemalan Liga Nacional Contra el Cáncer e Institute of Cancer (Liga-INCAN).

Methods: This IRB-approved single-institution retrospective cohort study reviewed the medical and pathological records of patients ≥18 years diagnosed with colon cancer at the Liga-INCAN, the largest specialized oncologic hospital in Guatemala, from 2013-2019. Continuous data are presented as mean and standard deviation, categorical data as frequency and percentage. Subjects were categorized into two groups, younger group (&lt;50 years) and older group (≥50 years). Statistical analyses were performed with Chi-squared, Fisher's exact test, and Kruskal-Wallis test.

Results: Among 123 patients, 34.74% were &lt;50 and 65.26% ≥50 years. Most of patients in the younger group were male 68.83% in comparison to the older group where most were female (p&lt;0.01), patients resided in the rural area 60.47% vs 50.0% respectively (p=0.18). BMI index in younger patients was below 25 in 56.1% vs 50.64% (p=0.30). Patients &lt;50 years old were diagnosed at earlier stages (I and II) 39.54% vs 22.5% when compared with ≥50 years old patients (p&lt;0.05), tumors were more common in the left compared to the right colon in younger patients (58.14% vs 50.0%), the difference was not significant (p=0.15). Histopathological features did not show significant differences, most tumors were adenocarcinomas for both groups, but signet ring cell carcinomas were more frequent in the younger than in older patients (9.30% vs 1.25%).

Conclusion: Our findings indicate that Guatemalan patients diagnosed with colon cancer younger than fifty years old are more frequently male and are diagnosed at earlier stages compared to older patients. Although, histopathological characteristics did not show significant differences, further studies are needed to understand how these impact the prognosis of the patients in the different age groups.

Funding: None

Citation Format: Angel Velarde, Alba Kihn-Alarcón, Hiram Gay, Jeff Michalski, Edgar Ruiz, Hugo Geoffrey, Vicky de Falla, Javier Figueroa, Kirk Douglas Najera, Carlos García, Kevin Ma, Ana Salazar, Abigail Zamorano, Sonia Dávila, Jacaranda van Rheenen. Colon Cancer in Patients under 50 in Guatemala: A Retrospective Comparative Cohort Study [abstract]. In: Proceedings of the 9th Annual Symposium on Global Cancer Research; Global Cancer Research and Control: Looking Back and Charting a Path Forward; 2021 Mar 10-11. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2021;30(7 Suppl):Abstract nr 110.

Perioperative chemotherapy in locally advanced gastric cancer in Chile: from evidence to daily practice

Gastric cancer (GC) is a leading cause of cancer death in Chile. Although recommended in international guidelines since 2006, perioperative chemotherapy was not available to patients in the public health system in Chile until 2016. We conducted an observational study to assess the feasibility of this strategy in public hospitals in Chile (Observational Study of Perioperative Chemotherapy in Locally Advanced Gastric Cancer – PRECISO). Patients with locally advanced, operable GC were offered to receive preoperative chemotherapy with Epirubicin + Cisplatin + Capecitabine (ECX) for three cycles followed by curative surgery. Staging included abdominal CT scan and laparoscopy if peritoneal carcinomatosis was suspected. Postoperative ECX for three cycles was recommended. Between August 2010 and March 2013, 110 patients were screened and 61 enrolled. Median age was 62 years (23–76 years) and most patients had good performance status at baseline (Eastern Cooperative Oncology Group performance status score (ECOG) 0: 42, ECOG 1: 19). Tumour site was proximal in 32 (52%) and medial and distal in 29 (48%) patients. All but four patients (n = 57, 93%) completed three cycles of preoperative chemotherapy. Fifty-six patients were operated and 54 (89%) had a curative resection. Thirty-three patients (54%) had pT0-2, and 18 (30%) had pN0 tumours, with two patients achieving a complete response. As of 20 December 2020, 39 patients died, 32 due to GC, one within 30 days of surgery, two due to intestinal obstruction at 5 and 3 months after surgery and four due to other causes. Five-year survival rate was 38%. We conclude that perioperative chemotherapy is feasible in public hospitals in Chile and should be offered to patients with locally advanced GC.

AB0151 FOLLOW-UP IN A MULTIDISCIPLINARY UNIT IMPROVES PREGNANCY OUTCOME IN INFLAMMATORY ARTHROPATIES ON BIOLOGICAL THERAPY

Background:

Women with inflammatory arthropaties have fertility problems and complications during pregnancy and frequently biological therapy (BT) is required for the disease control.

Objectives:

To evaluate pregnancy in women with inflammatory arthropaties in a multidisciplinary unit composed of Rheumatologists and Obstetricians: describe disease evolution, complications and treatment used (including BT).

Methods:

Retrospective and descriptive study of the evolution of pregnancy in patients with

inflammatory diseases (Rheumatoid Arthritis (RA), Spondyloarthritis (SpA) and Juvenile Idiopathic Arthritis (JIA)) and follow-up in a multidisciplinary unit for more than 15 years (until December 2020). Demographics, maternal disease, time until conception, previous abortions and presence of antibodies were collected. In addition, during follow-up, treatment, abortions, Caesarean sections (C-section), preterm births, disease activity and maternal/fetal complications were collected.

Results:

We registered 41 pregnancies (32 women): 20 RA (62.5%), 9 SpA (28.1%) and 3 JIA (9.4%). Maternal average age at diagnosis was 27.1±6.6 years and average age at childbirth/abortion was 34.9±5.1 years.

It took an average time of 9.6±8.5 months to conceive. 9.8% received fertility treatment with in vitro fertilization techniques.

AntiRo antibodies were registered in 7.3% of patients and 34.1% had at least 1 antiphospholipid antibody.

At the time of gestational desire/gestation 17 women (12 RA, 4 SpA, 2 JIA) were receiving BT: 7 certolizumab (CZP), 7 adalimumab (ADA), 3 etanercept (ETN). 1 patient was being treated with baricitinib. Due to pregnancy, ADA was changed to CZP in 3 women and BT was stopped in 6 cases (3 ETN, 2 ADA, 1 CZP) as well as baricitinib. In 2 cases, ADA was stopped at week 17 of pregnancy (medical indication). Pregnancy was completed with BT (CZP) in 9 cases.

9 abortions were registered prior to follow-up in the unit (0.28 abortions/mother) and 3 during follow-up (0.09 abortions/mother): 2 of them in women with CZP.

C-section was performed in 26.8% of cases.

Preterm birth (<37 weeks) happened in 9.7% (n: 4) of the pregnancies: 1 case in a woman with CZP.

A total of 17 different fetal/maternal complications were registered during follow-up: 6 in the BT group (35.3%) compared to 11 (64.7%) in the group without BT, being Intrauterine Growth Restriction (IUGR) more frequent among women with BT. Infections were not more common in patients with BT. Complications are listed in Table 1.

Table 1.COMPLICATIONSWITH BT (n, %) n: 11WITHOUT BT (n, %) n: 30IUGR3 (27.3%)1 (3.3%)LOW BIRTH WEIGHT2 (18.2%)2 (6.6%)INFECTION1 (9.1%)4 (13.3%)CHOLESTASIS0 (0%)2 (6.6%)PREECLAMPSIA0 (0%)1 (3.3%)DIABETES MELLITUS0 (0%)1 (3.3%)HIGH BLOOD PRESSURE0 (0%)0 (0%)NEPHROPATY0 (0%)0 (0%)NEONATAL LUPUS0 (0%)0 (0%)HEART BLOCK (0%)0 (0%)MALFORMATION0 (0%)0 (0%)HELLP SYNDROME0/0%)0 (0%)TOTAL6 (54.6%)11 (36.4%)

Regarding concomitant treatment, low dose prednisone was used in 48.8% of pregnancies, hydroxychloroquine in 51.2%, sulfasalazine in 9.8% and acetylsalicylic acid in 51.2%. We didn´t find differences in the use of these treatments between the two groups.

Median DAS28 among RA patients and available data was under 2.6 throughout pregnancy as well as previously and posteriorly. No differences in median DAS28 were found between women with BT and without BT. SpA patients had BASDAI lower than 4 in both groups during pregnancy and previously.

Conclusion:

In our series, as described in the literature, women with inflammatory arthropaties are older and are more likely to have preterm births compared to general population. Fewer abortions were registered during follow-up in the multidisciplinary unit. Appropriate disease control was maintained during pregnancy, also previously and afterwards. We registered more IUGR and low birth weight among women with BT but given the low number of patients with BT no statistically significant conclusions about complications can be drawn. Therefore, more studies among pregnant women with BT are necessary.

Disclosure of Interests:

None declared