Publications by authors named "Steichen O"

Individuals with sickle cell disease (SCD) and sickle cell trait (SCT) face an increased risk of complications from COVID-19 due to their susceptibility to infections and venous thromboembolism. We selected 28 studies from 3228 references in bibliographic databases to compare COVID-19 outcomes (hospitalization, ICU admission, need for ventilatory support, thromboembolic events, and mortality) between patients with SCD or SCT and control patients. Compared to control patients, the pooled risk of hospitalization was not significantly higher in those with SCT (odds ratio [OR] 1.

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  • The study compares the prevalence of depressive symptoms between individuals infected with SARS-CoV-2, with a focus on those experiencing long COVID.
  • Data was collected from a representative sample of adults through phone interviews, analyzing various factors, including current symptoms and depressive scores measured by PHQ-9.
  • Results show that individuals with long COVID are significantly more likely to exhibit depressive symptoms, particularly around feeling uninterested, fatigued, and having difficulty concentrating.
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  • The study investigates the incidence of serious respiratory tract infections (SRI) among individuals receiving immunosuppressive therapies, using data from French healthcare between 2014-2019.
  • A total of 24,122 patients were analyzed, revealing a standardized SRI incidence rate of 1,398 per 100,000 person-years, with significant associations found between SRI and various chronic conditions like cancer, respiratory diseases, and diabetes.
  • It concludes that a history of chronic diseases increases the risk of SRI in patients on immunosuppressive therapies, and that this risk is lower in those treated with conventional synthetic disease-modifying anti-rheumatic drugs compared to corticosteroids.
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Objective: Connected blood pressure (BP) monitors provide reliable data when used properly. Our objective was to analyse the engagement of real-world users with self-measurements.

Methods: We included adult first-time users of a connected BP monitor from July 2019 to March 2021.

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While the coronavirus disease-2019 (COVID-19) might have increased acute episodes in people living with sickle cell disease (SCD), it may also have changed their reliance on emergency department (ED) services. We assessed the impact of the COVID-19 pandemic and lockdowns on ED visits in adult SCD people followed in five French reference centres, with a special focus on 'high users' (≥10 visits in 2019). We analysed the rate of ED visits from 1 January 2015 to 31 December 2021, using a self-controlled case series.

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  • The study aims to estimate the prevalence of long COVID in adults in mainland France, exploring variations based on different definitions and individual characteristics.
  • A survey conducted in late 2022 found that out of 10,615 participants, 54.5% reported COVID-19 infection, with long COVID prevalence varying between 1.2% to 13.4% depending on the definition used, and 4.0% overall in the population.
  • The findings highlight that long COVID is a significant issue, with varying impacts on daily life, and suggest the need for more standardized definitions to enhance surveillance and research on this condition.
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The urine concentration impairment responsible for hyposthenuria in sickle cell nephropathy is currently thought to be a consequence of renal medulla lesions, which lead to nephrogenic diabetes insipidus. The objective of the present study was to investigate the mechanism of hyposthenuria in patients with sickle cell anemia. We performed an observational study of patients with homozygous SS sickle cell anemia and data available on the fasting plasma antidiuretic hormone (ADH) concentration.

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Background: Leg ulcers associated with major sickle cell disease (SCLU) are a chronic, painful complication, often treated by autologous skin graft. The analgesic effect of skin grafting in SCLU is poorly studied. The aim of this study was to evaluate the effect of skin grafting on the pain and healing of SCLU.

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Pertussis is a respiratory disease that can be fatal at all ages but especially in infants before their mandatory vaccination. Recent epidemiological data shows a decrease in the number of pertussis cases, but a resurgence cannot be excluded in the coming years due to the cyclic evolution of the disease and the loosening of hygiene measures. Two approaches are used to protect infants before their vaccination: vaccination of the mother during pregnancy and vaccination of all the infant's close relatives (cocooning).

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  • The study investigated the prevalence and bleeding risk associated with drug interactions between apixaban or rivaroxaban and certain CYP3A4 and P-glycoprotein inhibitors in patients with atrial fibrillation (AF).
  • Using a cohort from the French healthcare database (2014-2019), 10,392 AF patients on these medications were analyzed, with a focus on hospitalization due to bleeding as the primary outcome.
  • The findings revealed a 38.9% prevalence of drug-drug interactions, but no significant association with increased hospitalization for bleeding; factors like age and male gender were related to higher bleeding risk instead.
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Hypertension is the modifiable risk factor causing the largest loss in healthy life-years. The risk of cardiovascular events increases exponentially with the level of blood pressure (BP), starting from 115mmHg for systolic BP. Out-of-office BP measurements (self-measurements or ambulatory BP measurements) are now preferred for the diagnosis and follow up.

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Purpose: This systematic review and meta-analysis aimed to determine whether tramadol intake increases the risk of bleeding in patients receiving oral anticoagulants.

Methods: This systematic review was registered on PROSPERO, CRD42022327230. We searched PubMed and Embase up to 14 April 2022, and references and citations of included studies were screened.

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Background: Dyspnea is a frightening and debilitating experience. It attracts less attention than pain ('dyspnea invisibility'), possibly because of its non-universal nature. We tested the impact of self-induced experimental dyspnea on medical residents.

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Familial Mediterranean fever (FMF) patients may have hepatic cytolysis, although its origin is not formally elucidated. We aimed to evaluate liver involvement in familial Mediterranean fever (FMF) using non-invasive methods. All adult FMF patients harboring two non-ambiguous mutations of the MEFV gene with hepatic cytolysis were identified in a French tertiary adult center for FMF.

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Studies suggest a decreasing trend in the consumption of meat products and a growing interest in vegetarian diets. Medical support may be relevant, especially when switching to a vegan diet. Our objective was to describe the beliefs and attitudes of primary care physicians toward vegetarian diets.

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Introduction: Before attending residency, 6th-year French medical students must validate a final examination including a practical clinical test in their faculty. However, the national ranking that determines their future specialty and region solely relies on a computerized knowledge test. Our goal was to investigate the association between the final faculty test and the national ranking test.

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Introduction: Hypo- and hypercalcemia are common and some causes require urgent diagnosis and treatment. Measurement of ionized calcium is the reference test to diagnose calcium disorders but total calcium adjusted for protein or albumin concentration is more often used.

Methods: Patients hospitalised in a general internal medicine department from September 2013 to December 2015 who had a total plasma calcium concentration and a serum albumin or protein concentration measured within 24h of a ionized calcium blood measurement were included.

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Concomitant nonsteroidal anti-inflammatory drug (NSAIDs) and antithrombotic drug use is associated with an increased risk of bleeding, mainly gastrointestinal. The goal of this study was to quantify the transient increase in the risk of hospitalization for bleeding associated with NSAID use in patients treated with antiplatelet agents or anticoagulants. We performed a unidirectional case-crossover study using the EGB (Échantillon généraliste de bénéficiaires), a permanent random sample of the French nationwide health database.

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Purpose: The Coronavirus disease 2019 (COVID-19) has led to an unparalleled influx of patients. Prognostic scores could help optimizing healthcare delivery, but most of them have not been comprehensively validated. We aim to externally validate existing prognostic scores for COVID-19.

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Prevalence of renal impairment is increasing with aging in sickle cell anemia (SCA) patients, and is responsible for a high morbidity and mortality. However, sickle cell nephropathy's natural course remains mostly unknown. We conducted a prospective observational cohort study aimed to identify risk factors for CKD stage II in a cohort of SCA patients.

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Glomerular hyperfiltration alone or associated with albuminuria is a well-known feature of sickle cell associated nephropathy. Though, glomerular hyperfiltration is currently considered to be related to a high renal plasma flow and chronic hemolysis, cardiac output influence on measured glomerular filtration rate (mGFR) have not been investigated so far. Thirty seven homozygous sickle cell patients (SCA) from the RAND study investigated before and under angiotensin converting enzyme inhibitor (ACEI) were included.

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Approximately 20% of patients diagnosed with a phaeochromocytoma or paraganglioma carry a germline mutation in one of the succinate dehydrogenase (SDHx) genes (SDHA, SDHB, SDHC and SDHD), which encode the four subunits of the SDH enzyme. When a pathogenic SDHx mutation is identified in an affected patient, genetic counselling is proposed for first-degree relatives. Optimal initial evaluation and follow-up of people who are asymptomatic but might carry SDHx mutations have not yet been agreed.

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Background: The COVID-19 outbreak has dramatically impacted medical education, both bedside and academic teaching had to be adapted to comply with the reorganisation of care and social distancing measures.

Objectives: To overview the impact of the pandemic on medical education, including the pedagogical responses adopted and their assessment by medical students and residents.

Material And Methods: This restricted systematic review was performed using Rayyan QCRI, to select observational or interventional articles and field experience reports assessing the impact of the COVID-19 pandemic on medical education for medical students and residents.

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