[The year 2023 placed in perspective by hospital internists]. / Année 2023 mise en perspective par les internistes hospitaliers.

This article features a selection of ten topics chosen, reviewed, and commented for you by chief residents at the Department of Internal Medicine at Centre hospitalier universitaire vaudois (CHUV). This selection synthesizes the novelties and essential reminders of 2023 in internal medicine. By analyzing the standout publications of the year, it offers an overview of progress in diagnosis and patient management within the hospital and their transition to outpatient care. From oral anticoagulation to community-acquired pneumonias, encompassing the management of heart and kidney failure, each key aspect is explored. This compilation provides practitioners with an essential resource to remain at the forefront of current developments, thereby stimulating more informed and effective care for patients.

Cet article propose une sélection de dix sujets choisis, revus et commentés pour vous par les cheffes et chefs de clinique du Service de médecine interne du Centre hospitalier universitaire vaudois (CHUV). Cette sélection synthétise les nouveautés et rappels essentiels de 2023 en médecine interne. En analysant les publications phares de l'année, elle offre une vue d'ensemble des progrès dans le diagnostic et la prise en charge des patients intrahospitaliers et leur transition ambulatoire. De l'anticoagulation orale aux pneumonies communautaires en passant par la prise en charge des insuffisances cardiaque et rénale, chaque aspect clé est exploré. Cette compilation fournit aux praticiens une ressource essentielle pour rester à la pointe des développements actuels, stimulant ainsi des soins plus éclairés et efficaces pour les patients.

Efficient Memory-Enhanced Transformer for Long-Document Summarization in Low-Resource Regimes.

Long document summarization poses obstacles to current generative transformer-based models because of the broad context to process and understand. Indeed, detecting long-range dependencies is still challenging for today's state-of-the-art solutions, usually requiring model expansion at the cost of an unsustainable demand for computing and memory capacities. This paper introduces Emma, a novel efficient memory-enhanced transformer-based architecture. By segmenting a lengthy input into multiple text fragments, our model stores and compares the current chunk with previous ones, gaining the capability to read and comprehend the entire context over the whole document with a fixed amount of GPU memory. This method enables the model to deal with theoretically infinitely long documents, using less than 18 and 13 GB of memory for training and inference, respectively. We conducted extensive performance analyses and demonstrate that Emma achieved competitive results on two datasets of different domains while consuming significantly less GPU memory than competitors do, even in low-resource settings.

Increased Arterial Responsiveness to Angiotensin II in Mice Conceived by Assisted Reproductive Technologies.

Since the first report in 1978, the number of individuals conceived by Assisted Reproductive Technologies (ART) has grown incessantly. In parallel, with the recent emergence of possible underlying mechanisms of ART-induced epigenetic changes in the renin-angiotensin system, the cardiovascular repercussions of ART in mice and human offspring (including arterial hypertension, vascular dysfunction, and cardiac remodeling) have become increasingly recognized. Here, we hypothesized that ART may increase arterial responsiveness to angiotensin II (ANG II) by epigenetically modifying the expression of its receptors. To test this hypothesis, we assessed the vasoconstrictor responsiveness to ANG II in isolated aortas from ART and control mice. We also examined ANG II receptor (ATR) type 1 and 2 expression and the promoter methylation of the At1aR, At1bR and At2R genes. We found that the vasoconstrictor response to ANG II was markedly increased in ART mice compared to controls. This exaggerated vasoconstrictor responsiveness in ART mice correlated with a significant increase in the ANG II receptor (ATR) type 1 to ATR type 2 protein expression ratio in the aorta; this was mainly driven by an increase in AT1R expression, and by hypomethylation of two CpG sites located in the At1bR gene promoter leading to increased transcription of the gene. We conclude that in mice, ART increase the vasoconstrictor response to ANG II in the aorta by epigenetically causing an imbalance between the expression of vasoconstrictor (AT1R) and vasodilator (AT2R) ANG II receptors. Unbalanced expression of AT1R and AT2R receptors seems to be a novel mechanism contributing to ART-induced arterial hypertension in mice.

[The Internal medicine articles that struck us the most in 2021]. / Année 2021 mise en perspective par les internistes hospitaliers.

The year 2021 has seen many breakthroughs in general internal medicine, despite the ongoing COVID-19 pandemic, with multiple implications in our daily clinical practice. From shorter antibiotic treatment duration in community-acquired pneumonia, to new indications for colchicine treatment, without forgetting better targets of hemoglobin for transfusion, questioning of the interest of high dose vitamin D substitution when preventing falls in older patients and finally disappointing hopes for new indications of albumin substitution in cirrhosis, the literature is full of new evidence. Each year, the chief residents of the internal medicine ward in Lausanne university hospital (CHUV) in Switzerland meet up to share their readings: here is a selection of ten articles, chosen, summarized, and commented for you.

L'année 2021, malgré la pandémie de Covid-19, a vu de nombreux progrès en médecine interne générale, avec de multiples implications pour notre pratique quotidienne. D'une durée diminuée d'antibiothérapie pour le traitement de la pneumonie communautaire à de nouvelles indications au traitement de colchicine, en passant par des précisions sur les cibles de transfusion érythrocytaire, ainsi qu'une remise en question de l'intérêt de la vitamine D à haute dose dans la prévention des chutes chez la personne âgée, et pour finir des espoirs déçus de nouvelle indication à la substitution d'albumine dans la cirrhose, les nouveautés abondent dans la littérature. Chaque année, les cheffes et chefs de clinique du Service de médecine interne du CHUV se réunissent pour partager leurs lectures : voici une sélection de dix articles choisis, revus et commentés pour vous.

[Focus on tizanidine in primary care medecine]. / Le point sur la tizanidine en médecine de premier recours.

Tizanidine is an alpha2 agonist with central action whose myorelaxant effects are often used off-label against primary backpain in clinical practice. It is mainly metabolized by the liver. The concomitant use of CYP1A2 inhibitor drugs increases the plasmatic concentration and thus can cause serious adverse effects. Severe hypotension is the most memorable example. Its narrow therapeutic range and the interindividual different sensitivity to the molecule justify using it wisely. A clinical case is reported as illustration.

La tizanidine est un agoniste alpha-2-adrénergique d'action centrale dont l'effet myorelaxant est utilisé « hors indication ¼ en pratique médicale pour les lombalgies primaires. Elle est principalement métabolisée au niveau hépatique. Lorsqu'elle est administrée de manière concomitante à un inhibiteur du CYP1A2, sa concentration plasmatique augmente, entraînant potentiellement plusieurs effets indésirables. L'hypotension sévère en est l'exemple le plus probant. Sa marge thérapeutique étroite et la sensibilité variable des sujets à la molécule justifient son utilisation judicieuse. Un cas clinique illustratif est rapporté.

[Epidemiology and risk factors of nosocomial COVID infections in the Service of internal medicine at CHUV]. / Épidémiologie et facteurs de risque des infections Covid nosocomiales dans le Service de médecine interne du CHUV.

Nosocomial COVID-19 infections are a challenge for hospitals. In order to assess possible demographic, personal, environmental or medical care related risk factors, data of nosocomial cases occurring in the Service of internal medicine at CHUV between February and March 2021 were retrospectively analyzed. Neither personal nor medical care related factors were identified as risk factor for a nosocomial infection. However, a significant number of patients with hospital-acquired COVID infection stayed in a 5-bed ward (versus 1-2 beds) and shared toilets in these rooms. Patient distancing measures and weekly screening led to a subsequent significant reduction of nosocomial SARS-CoV-2 infections.

Les infections Covid-19 nosocomiales sont un défi pour les hôpitaux. Afin d'identifier d'éventuels facteurs de risque démographiques, personnels, environnementaux ou de prise charge, nous avons analysé rétrospectivement les cas nosocomiaux survenus dans le Service de médecine interne du CHUV en février-mars 2021. Aucun facteur personnel ou de prise en charge n'a été mis en évidence. Par contre, un plus grand nombre de patients avec infection nosocomiale avait séjourné dans une chambre à 5 lits (versus 1-2 lits) et utilisé les toilettes communes de ces chambres. La limitation de l'occupation des chambres multiples et des dépistages hebdomadaires ont permis de contrôler la transmission nosocomiale du SARS-CoV-2.

[The management of hypertriglyceridemia and the risk of pancreatitis]. / Prise en charge des hypertriglycéridémies et du risque de pancréatite.

In the face of hypertriglyceridemia, the potential causes must be assessed to choose the best medical therapeutic option. In cases of secondary hypertriglyceridemia, physicians should use treatments targeting the pathophysiological mechanisms underlying the lipid disorder. Lifestyle interventions are the cornerstone of an effective treatment, to achieve controlled glycemia, blood pressure and weight loss. Only in cases where these measures are insufficient, fibrates can be trialed although their clinical benefit is controversial, with special caution when combined with statins (risk of rhabdomyolysis). Plasmapheresis or intravenous insulin therapy are only used in severe situations after a multidisciplinary decision process in the hospital setting. The clinical case presented here reminds us to assess hypertriglyceridemia in the face of any acute pancreatitis.

Les causes d'une hypertriglycéridémie doivent être explorées pour choisir la meilleure approche thérapeutique. En cas d'hypertriglycéridémie secondaire, il est préférable de cibler le mécanisme physiopathologique du désordre lipidique. Les mesures hygiéno-diététiques restent la clé de voûte du traitement, pour atteindre un bon contrôle glycémique, tensionnel et pondéral. Uniquement en cas d'échec, les fibrates peuvent être évoqués bien que leur bénéfice clinique soit controversé, avec une attention particulière en cas de bithérapie par statine et fibrate (risque de rhabdomyolyse). La plasmaphérèse ou l'insulinothérapie intraveineuse sont réservées aux situations sévères et décidées avec les différents spécialistes en milieu hospitalier. Le cas clinique présenté ici est un rappel que l'hypertriglycéridémie devrait être recherchée devant toute pancréatite aiguë.

[The internal medicine articles that struck us the most in 2019]. / L'année 2019 mise en perspective par les internistes hospitaliers.

2019 has continued to bring important progress in all areas of internal medicine, impacting our daily practice. From new indications for SGLT2 inhibitors and rivaroxaban, to antibiotic duration for Gram negative bacteriemia, passing by the delay for cardioversion of recent-onset atrial fibrillation or for beginning sacubitril/valsartan after stabilization of a cardiac failure, internal medicine journals are full of novelties. Every year, the chief residents of the CHUV internal medicine ward meet up to share their readings: here is their selection of eleven articles, chosen, summarized and commented for you.

L'année 2019 a vu d'importants progrès dans tous les domaines de la médecine interne, avec un impact important sur notre pratique quotidienne hospitalière. Des nouvelles indications pour les inhibiteurs du SLGT2 et le rivaroxaban, à la durée du traitement des bactériémies à Gram négatif en passant par le délai pour la cardioversion d'une fibrillation auriculaire inaugurale ou celui pour introduire du sacubitril/valsartan après stabilisation d'une insuffisance cardiaque, les nouveautés abondent dans la littérature. Chaque année, les chefs de clinique du Service de médecine interne du Centre Hospitalier Universitaire Vaudois (CHUV) se réunissent pour partager leurs lectures: voici une sélection de onze articles choisis, revus et commentés pour vous.

[Organizational Impacts and Clinical Challenges of the COVID-19 Pandemic on a Swiss Tertiary Internal Medicine Department]. / Impacts organisationnels et défis cliniques de la pandémie COVID-19 pour un service hospitalier de médecine interne universitaire.

The rapid progression of COVID-19 is an organizational challenge for all hospitals. To secure the patient overflow, the Department internal medicine of the University Hospital of Lausanne increased nurse and medical workforces as well as bed capacity by 65 %, with extraordinary help from other departments. The implemented crisis management stood upon three pillars : a crisis management team, steering documents and internal communication. In this new form, the Department had already taken care of 442 COVID-19 admissions by April 16, 2020. Alongside organizational challenges, clinical issues such as rapid respiratory distress, clinical suspicions with negative PCR and treatment uncertainties in the absence of sufficient evidence were overcome. Despite the peak of the pandemic appearing to have passed, the next phase could be just as complicated.

La progression rapide du COVID-19 constitue un défi organisationnel pour tous les hôpitaux. Pour anticiper un afflux important de patients, le service de médecine interne du CHUV a ainsi augmenté ses forces de travail médico-soignantes et son nombre de lits de 65 % avec un soutien extraordinaire de toute l'institution. Pour opérer ces changements majeurs, l'organisation de crise mise en place s'est appuyée sur trois piliers : une cellule de conduite, des documents de pilotage et une communication interne. Sous cette nouvelle forme, le service a pris en charge 442 hospitalisations COVID-19 jusqu'au 16 avril 2020. Si les enjeux organisationnels ont été majeurs, la gestion des situations complexes, comme les manifestations respiratoires et les multiples incertitudes cliniques diagnostiques et thérapeutiques, ont été également une gageure. Le pic de la pandémie semble passé, mais la prochaine phase pourrait constituer un nouveau défi organisationnel.

Exaggerated systemic oxidative-inflammatory-nitrosative stress in chronic mountain sickness is associated with cognitive decline and depression.

KEY POINTS: Chronic mountain sickness (CMS) is a maladaptation syndrome encountered at high altitude (HA) characterised by severe hypoxaemia that carries a higher risk of stroke and migraine and is associated with increased morbidity and mortality. We examined if exaggerated oxidative-inflammatory-nitrosative stress (OXINOS) and corresponding decrease in vascular nitric oxide bioavailability in patients with CMS (CMS+) is associated with impaired cerebrovascular function and adverse neurological outcome. Systemic OXINOS was markedly elevated in CMS+ compared to healthy HA (CMS-) and low-altitude controls. OXINOS was associated with blunted cerebral perfusion and vasoreactivity to hypercapnia, impaired cognition and, in CMS+, symptoms of depression. These findings are the first to suggest that a physiological continuum exists for hypoxaemia-induced systemic OXINOS in HA dwellers that when excessive is associated with accelerated cognitive decline and depression, helping identify those in need of more specialist neurological assessment and targeted support. ABSTRACT: Chronic mountain sickness (CMS) is a maladaptation syndrome encountered at high altitude (HA) characterised by severe hypoxaemia that carries a higher risk of stroke and migraine and is associated with increased morbidity and mortality. The present cross-sectional study examined to what extent exaggerated systemic oxidative-inflammatory-nitrosative stress (OXINOS), defined by an increase in free radical formation and corresponding decrease in vascular nitric oxide (NO) bioavailability, is associated with impaired cerebrovascular function, accelerated cognitive decline and depression in CMS. Venous blood was obtained from healthy male lowlanders (80 m, n = 17), and age- and gender-matched HA dwellers born and bred in La Paz, Bolivia (3600 m) with (CMS+, n = 23) and without (CMS-, n = 14) CMS. We sampled blood for oxidative (electron paramagnetic resonance spectroscopy, HPLC), nitrosative (ozone-based chemiluminescence) and inflammatory (fluorescence) biomarkers. We employed transcranial Doppler ultrasound to measure cerebral blood flow (CBF) and reactivity. We utilised psychometric tests and validated questionnaires to assess cognition and depression. Highlanders exhibited elevated systemic OXINOS (P < 0.05 vs. lowlanders) that was especially exaggerated in the more hypoxaemic CMS+ patients (P < 0.05 vs. CMS-). OXINOS was associated with blunted cerebral perfusion and vasoreactivity to hypercapnia, impaired cognition and, in CMS+, symptoms of depression. Collectively, these findings are the first to suggest that a physiological continuum exists for hypoxaemia-induced OXINOS in HA dwellers that when excessive is associated with accelerated cognitive decline and depression, helping identify those in need of specialist neurological assessment and support.

[Hypoxic tests and prediction of high altitude illnesses]. / Tests hypoxiques et prédictiondes pathologies liées à l'altitude.

More and more travelers are exposed to high altitude, for example, 176'000 trekkers/climbers were registered in Nepal in 2017. Individual predispositions, a history of altitude illness, the existence of risk factors and/or comorbidities increase the risk of developing specific altitude-related diseases that are potentially life threatening. Nevertheless, the prediction of these diseases remains difficult, especially in subjects without prior exposure to high altitude. In this context different altitude simulation tests have been developed. Their indication, practice and validity are summarized in this article.

De plus en plus de voyageurs s'exposent à la haute altitude, par exemple 176 000 trekkers/alpinistes ont été enregistrés au Népal en 2017. Des prédispositions individuelles, des antécédents de maladies d'altitude, l'existence de facteurs de risque et/ou comorbidités augmentent le risque de développer des maladies spécifiques liées à l'altitude qui sont potentiellement mortelles. Néanmoins, la prédiction de ces maladies reste difficile, notamment chez des sujets sans exposition préalable à la haute altitude. Dans ce contexte, différents tests de simulation à l'altitude ont été développés. Leurs indication, pratique et validité sont résumées dans cet article.

Structural and functional changes of the pulmonary vasculature after hypoxia exposure in the neonatal period: a new swine model of pulmonary vascular disease.

Pulmonary vascular disease (PVD) represents an underestimated and increasing clinical burden not only in the neonatal period but also later in life, when exercise tolerance is decreased. Animal models performing long-term followup after a perinatal insult are lacking. This study aimed to develop and characterize a neonatal swine model with hypoxia-induced PVD during long-term followup after reexposure to normoxia and to investigate the exercise response in this model. Piglets were exposed to a normoxic ( n = 10) or hypoxic environment ( n = 9) for 4 wk. Neonatal hypoxia exposure resulted in pulmonary hypertension. Mean pulmonary artery pressure was elevated 1 day after reexposure to normoxia (30.2 ± 3.3 vs. 14.3 ± 0.9 mmHg) and remained significantly higher in the second week (32.8 ± 3.8 vs. 21.4 ± 1.2 mmHg), accompanied by decreased exercise tolerance. Exercise resulted in a trend toward an exaggerated increase of pulmonary artery pressure in hypoxia-exposed animals ( week 6, P = 0.086). Although pulmonary hypertension was transient, thickening of pulmonary arterioles was found at the end of followup. Furthermore, right ventricular dilation, lower right ventricular fractional area change ( week 8, 40.0 ± 2.7% vs. 29.5 ± 4.7%), and tricuspid annular plane systolic excursion ( week 8, 27.0 ± 2.5 vs. 22.9 ± 2.1 mm) persisted during followup. Male animals showed more severe PVD than female animals. In conclusion, we developed a neonatal swine model that allows examination of the long-term sequelae of damage to the developing neonatal lung, the course of the disease and the effect of therapy on long-term outcome. NEW & NOTEWORTHY The swine model of neonatal pulmonary vascular disease developed in the present study is the first that allows exercise testing and examination of long-term sequelae of a perinatal hypoxic insult, the course of the disease, and the effect of therapy on long-term outcome.

[How to properly use beta-blockers ?] / Comment utiliser correctement les ß-bloquants ?

Known since the 1950s, competitive ß-adrenergic receptor antagonists, namely ß-blockers (BB), constitute today a large and heterogeneous class of drugs with multiple clinical indications. Despite their daily use, can we choose the most appropriate BB for each of these indications? A better knowledge of the individual properties of BB (bioavailability, cardioselectivity, vasodilator and metabolic effects) could help to optimize their clinical benefits especially in polymorbid patients, frequently suffering from metabolic syndrome, peripheral arteriopathy or asthma/chronic obstructive pulmonary disease (COPD) supposed to be potential contraindications to their use.

Connus depuis les années 50, les antagonistes compétitifs des récepteurs ß-adrénergiques, ou ß-bloquants (BB), constituent aujourd'hui une classe ample et hétérogène de médicaments avec de multiples indications cliniques. Malgré leur utilisation quotidienne, savons-nous choisir le BB le plus approprié pour chacune de ces indications ? Une meilleure connaissance des propriétés individuelles des BB (biodisponibilité, cardiosélectivité, effets vasodilatateur et métabolique) devrait permettre d'optimaliser leurs bénéfices surtout chez des patients polymorbides, fréquemment atteints d'un syndrome métabolique, d'une artériopathie périphérique ou d'un asthme/bronchopneumopathie chronique obstructive (BPCO) supposés être des contre-indications potentielles à leur emploi.

[The discharge summary in the transition between hospital and ambulatory care]. / La lettre de sortie dans la transition entre l'hôpital et l'ambulatoire.

The hospital discharge letter is an important tool for transmitting medical information during the transition from inpatient to outpatient care. It promotes continuity of care, as well as quality and safety of medical care. Nevertheless, several challenges exist within a university hospital department that may make it difficult to transmit these documents in a timely manner. In this article we describe a project to improve the quality and rapidity of the transmission of discharge letters in our internal medicine department, composed of organizational and formative measures.

La lettre de sortie d'hospitalisation est un important outil de transmission d'informations médicales lors de la transition entre les soins hospitaliers et ambulatoires. Elle favorise la continuité des soins, ainsi que la qualité et la sécurité de la prise en charge médicale. Néanmoins, au sein d'un service hospitalier universitaire existent plusieurs défis pouvant empêcher la transmission de ces documents dans les délais adéquats. Dans cet article, nous décrivons un projet d'amélioration de la qualité et de la temporalité de la transmission des lettres de sortie dans notre service de médecine interne, composé de mesures organisationnelles et formatives.

[The « Osler ¼ group : a new opportunity to think about « becoming a physician ¼]. / Le groupe « Osler ¼ : une nouvelle opportunité pour réfléchir sur le « devenir médecin ¼.

Issues of professionalism and professional identity formation, particularly amongst young doctors, have been the object of increasing attention. This is explained in part by the evolution of the hospital environment (specialization, shorter stays), as well as by the prevalence of physician burnout and suicide. In this context, the CHUV implemented a pilot project within the department of internal medicine aiming to support its residents in the construction of their professional identity. The Osler group convened 10 residents led by an attending physician and a senior resident from the internal medicine department as well as an attending physician of the liaison psychiatry department. The experience has been a success, with residents describing clear benefits of the group.

Les enjeux de professionnalisme et d'identité professionnelle chez les médecins font l'objet d'un intérêt croissant, en raison des évolutions du milieu hospitalier (spécialisation, raccourcissement de la durée de séjour) ainsi que de phénomènes comme le burn-out ou le suicide. C'est dans ce contexte que le CHUV a mis en place un projet pilote dans le Service de médecine interne (SMI) pour soutenir les médecins assistants dans la construction de leur identité professionnelle, valoriser la transmission de l'expérience clinique et leur offrir un espace de parole et d'échange. Le groupe « Osler ¼ a ainsi réuni dix assistants pour des rencontres animées par un médecin cadre et une cheffe de clinique du SMI, ainsi qu'un médecin cadre du Service de psychiatrie de liaison. L'expérience a été un succès, les assistants exprimant clairement les bienfaits du groupe, notamment quant à leur rapport au métier.

[The internal medicine articles that struck us the most in 2017]. / L'année 2017 mise en perspective par les internistes hospitaliers.

2017 has continued to bring important progress in all areas of internal medicine, impacting our daily practice. From bedside screening for beta-lactam allergies, to statins as primary prevention in the elderly, SGLT2 inhibitors in heart failure, azithromycin in severe asthmatics and tofacitinib in ulcero-haemorrhagic recto-colitis, internal medicine journals are full of novelties. Every year, the chief residents of the CHUV internal medicine ward meet up to share their readings: here is their selection of eleven articles, chosen, summarized and commented for you.

L'année 2017 a vu d'importants progrès dans tous les domaines de la médecine interne, avec un impact important sur notre pratique quotidienne. Du dépistage au lit du patient des allergies aux bêta-lactames, aux statines en prévention primaire chez les personnes âgées, en passant par l'utilisation des inhibiteurs SGLT2 dans l'insuffisance cardiaque, de l'azithromycine chez les asthmatiques sévères et du tofacitinib en cas de rectocolite ulcéro-hémorragique (RCUH), les nouveautés abondent dans la littérature. Chaque année, les chefs de clinique du Service de médecine interne du Centre hospitalier universitaire vaudois (CHUV) se réunissent pour partager leurs lectures : voici une sélection de onze articles choisis, revus et commentés pour vous.

Does This Patient Have Acute Mountain Sickness?: The Rational Clinical Examination Systematic Review.

Importance: Acute mountain sickness (AMS) affects more than 25% of individuals ascending to 3500 m (11 500 ft) and more than 50% of those above 6000 m (19 700 ft). AMS may progress from nonspecific symptoms to life-threatening high-altitude cerebral edema in less than 1% of patients. It is not clear how to best diagnose AMS. Objective: To systematically review studies assessing the accuracy of AMS diagnostic instruments, including the visual analog scale (VAS) score, which quantifies the overall feeling of sickness at altitude (VAS[O]; various thresholds), Acute Mountain Sickness-Cerebral score (AMS-C; ≥0.7 indicates AMS), and the clinical functional score (CFS; ≥2 indicates AMS) compared with the Lake Louise Questionnaire Score (LLQS; score of ≥5). Data Extraction and Synthesis: Searches of MEDLINE and EMBASE from inception to May 2017 identified 1245 publications of which 91 were suitable for prevalence analysis (66 944 participants) and 14 compared at least 2 instruments (1858 participants) using a score of 5 or greater on the LLQS as a reference standard. To determine the prevalence of AMS for establishing the pretest probability of AMS, a random-effects meta-regression was performed based on the reported prevalence of AMS as a function of altitude. Main Outcomes and Measures: AMS prevalence, likelihood ratios (LRs), sensitivity, and specificity of screening instruments. Results: The final analysis included 91 articles (comprising 66 944 study participants). Altitude predicted AMS and accounted for 28% of heterogeneity between studies. For each 1000-m (3300-ft) increase in altitude above 2500 m (8200 ft), AMS prevalence increased 13% (95% CI, 9.5%-17%). Testing characteristics were similar for VAS(O), AMS-C, and CFS vs a score of 5 or greater on the LLQS (positive LRs: range, 3.2-8.2; P = .22 for comparisons; specificity range, 67%-92%; negative LRs: range, 0.30-0.36; P = .50 for comparisons; sensitivity range, 67%-82%). The CFS asks a single question: "overall if you had any symptoms, how did they affect your activity (ordinal scale 0-3)?" For CFS, moderate to severe reduction in daily activities had a positive LR of 3.2 (95% CI, 1.4-7.2) and specificity of 67% (95% CI, 37%-97%); no reduction to mild reduction in activities had a negative LR of 0.30 (95% CI, 0.22-0.39) and sensitivity of 82% (95% CI, 77%-87%). Conclusions and Relevance: The prevalence of acute mountain sickness increases with higher altitudes. The visual analog scale for the overall feeling of sickness at altitude, Acute Mountain Sickness-Cerebral, and clinical functional score perform similarly to the Lake Louise Questionnaire Score using a score of 5 or greater as a reference standard. In clinical and travel settings, the clinical functional score is the simplest instrument to use. Clinicians evaluating high-altitude travelers who report moderate to severe limitations in activities of daily living (clinical functional score ≥2) should use the Lake Louise Questionnaire Score to assess the severity of acute mountain sickness.

[Immersion pulmonary edema]. / Œdème pulmonaire d'immersion.

Immersion pulmonary edema may occur during scuba diving, snorke-ling or swimming. It is a rare and often recurrent disease, mainly affecting individuals aged over 50 with high blood pressure. However it also occurs in young individuals with a healthy heart. The main symptoms are dyspnea, cough and hemoptysis. The outcome is often favorable under oxygen treatment but deaths are reported. A cardiac and pulmonary assessment is necessary to evaluate the risk of recurrence and possible contraindications to immersion.

L'œdème pulmonaire d'immersion peut survenir durant une plongée sous-marine, une plongée en apnée ou durant la natation. C'est une pathologie rare, souvent récidivante, touchant principalement les individus âgés de plus de 50 ans et hypertendus mais qui survient également chez des individus jeunes avec un cœur sain. Les symptômes principaux sont une dyspnée, une toux et des hémoptysies. L'évolution est souvent favorable sous traitement d'oxygène mais des décès sont rapportés. Un bilan cardiologique et pulmonaire est nécessaire pour évaluer le risque de récidive et une éventuelle contre-indication à l'immersion.

[Delegation of medico-administrative tasks : what do medical interns and secretaries think?] / Délégation des tâches médico-administratives : perspectives croisées entre médecins assistants et secrétaires.

The hospital activity of physicians in training mainly consists in direct contacts with patients, tasks indirectly linked to patients such as administration, as well as clinical and theoretical training. In our era of digitalization, an important administrative work load without any added medical value fills their daily chores. In parallel activities of medical secretaries are getting more partitioned, with their desks situated far from physicians' and tasks often limited to finalizing discharge letters. Added to multiple overtime, this reduces physicians' and secretaries' work satisfaction. This article describes the context and development of delegating medico-administrative tasks to secretaries in our department of internal medicine.

L'activité hospitalière des médecins en formation se compose principalement de contacts directs avec les patients, de tâches indirectement liées au patient, essentiellement administratives, et de formations pratique et théorique. A l'heure de la numérisation, une importante activité administrative sans valeur médicale ajoutée remplit encore leur quotidien. Parallèlement, l'activité des secrétaires médicales se cloisonne, avec des bureaux éloignés des médecins et des tâches se limitant souvent à la finalisation de lettres de sortie. Ajoutés au cumul d'heures supplémentaires, ces éléments diminuent la satisfaction des médecins et des secrétaires dans leur travail. Cet article décrit le contexte et la mise en œuvre d'une délégation de tâches médico-administratives à des secrétaires de médecins dans notre service de médecine interne hospitalière.

Acute and Chronic Altitude-Induced Cognitive Dysfunction in Children and Adolescents.

OBJECTIVE: To assess whether exposure to high altitude induces cognitive dysfunction in young healthy European children and adolescents during acute, short-term exposure to an altitude of 3450 m and in an age-matched European population permanently living at this altitude. STUDY DESIGN: We tested executive function (inhibition, shifting, and working memory), memory (verbal, short-term visuospatial, and verbal episodic memory), and speed processing ability in: (1) 48 healthy nonacclimatized European children and adolescents, 24 hours after arrival at high altitude and 3 months after return to low altitude; (2) 21 matched European subjects permanently living at high altitude; and (3) a matched control group tested twice at low altitude. RESULTS: Short-term hypoxia significantly impaired all but 2 (visuospatial memory and processing speed) of the neuropsychological abilities that were tested. These impairments were even more severe in the children permanently living at high altitude. Three months after return to low altitude, the neuropsychological performances significantly improved and were comparable with those observed in the control group tested only at low altitude. CONCLUSIONS: Acute short-term exposure to an altitude at which major tourist destinations are located induces marked executive and memory deficits in healthy children. These deficits are equally marked or more severe in children permanently living at high altitude and are expected to impair their learning abilities.