Publications by authors named "Tsogyal Latshang"

In Switzerland, additional vaccinations against influenza, COVID-19, Streptococcus pneumoniae and varicella zoster virus (VZV), are recommended for patients with chronic lung diseases such as COPD, asthma or interstitial lung disease, since infectious diseases often lead to exacerbation of lung diseases resulting in increased disease burden and mortality. In this review we give an overview on recommended vaccinations for patients with chronic lung diseases, also including vaccinations against pertussis and RSV, which are recommended in international guidelines. While continuous development of vaccines against S.

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Background: Limited data exist on the reliability, efficacy and safety of ultrasound-guided transbronchial cryobiopsy for suspicious mediastinal and hilar lesions. This study shares findings from implementing this method and compares the results with those of the standard endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA).

Methods: Patients undergoing diagnostic bronchoscopy for mediastinal or hilar lesions in four Swiss centres were included.

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Article Synopsis
  • Over a 7-year period, researchers observed how asthma and chronic rhinosinusitis with nasal polyposis responded to biological treatments.
  • There is limited understanding of how ASA/NSAID intolerance (Widal's disease) interacts with these biologicals.
  • The case study presented involves a patient suffering from both conditions who experienced a severe intolerance reaction to metamizole during surgery.
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Article Synopsis
  • Sleep disorders in the Kyrgyz Republic are largely undiagnosed and untreated, prompting an exploration of the state of sleep medicine through insights from local and international health care workers.
  • A policy analysis and interviews revealed three main barriers: lack of education and training, financial constraints, and poor infrastructure and equipment.
  • A proposed strategy to overcome these challenges includes enhancing knowledge sharing, conducting implementation research, and advocating for policy changes to prioritize sleep health at both local and government levels.
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Background: The global coronavirus disease 2019 (COVID-19) pandemic has posed substantial challenges for healthcare systems, notably the increased demand for chest computed tomography (CT) scans, which lack automated analysis. Our study addresses this by utilizing artificial intelligence-supported automated computer analysis to investigate lung involvement distribution and extent in COVID-19 patients. Additionally, we explore the association between lung involvement and intensive care unit (ICU) admission, while also comparing computer analysis performance with expert radiologists' assessments.

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Background: Amongst the millions of travelers to high altitude worldwide are many with chronic obstructive pulmonary disease (COPD), but data regarding the effects of acute exposure to altitude on exercise performance are limited. The current study investigated how acute exposure to moderate altitude influences exercise performance in COPD patients, providing novel insights to the underlying physiological mechanisms.

Methods: Twenty-nine COPD patients, GOLD grade 2-3, median (quartile) forced expiratory volume in 1 second (FEV) of 60% predicted (46; 69) performed cycling incremental ramp exercise test (IET) at 490 m and after acute exposure of 2-6 hours to 2048 m or vice versa, according to a randomized cross-over design.

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Background: The aim of the current study was to investigate the distribution and extent of lung involvement in patients with COVID-19 with AI-supported, automated computer analysis and to assess the relationship between lung involvement and the need for intensive care unit (ICU) admission. A secondary aim was to compare the performance of computer analysis with the judgment of radiological experts.

Methods: A total of 81 patients from an open-source COVID database with confirmed COVID-19 infection were included in the study.

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The present case reports on a 53-year-old patient with severe chronic obstructive pulmonary disease (COPD) and acute pneumonia who complained of massive right-sided chest pain and hemoptysis after a severe coughing fit. To the authors' great surprise, further clinical and radiological investigations revealed a rupture of the right intercostal muscles caused by the coughing fit, with herniation of parts of the right lower lobe of the lung down to the subcutaneous and below the M. latissimus dorsi.

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Introduction/aims: Prognostic factors in Duchenne muscular dystrophy (DMD) predict the disease course and may help individualize patient care. The aim was to summarize the evidence on prognostic factors that may support treatment decisions.

Methods: We searched six databases for prospective studies that each included ≥50 DMD patients with a minimum follow-up of 1 y.

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Purpose: Patients with chronic obstructive pulmonary disease (COPD) are particularly vulnerable to hypoxia-induced autonomic dysregulation. Hypoxemia is marked during sleep. In COPD, altitude exposure is associated with an increase in blood pressure (BP) and a decrease in baroreflex-sensitivity (BRS).

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Type-2 Asthma: Leaving Behind the Perspective of the Seventies The diagnosis 'bronchial asthma' spans different phenotypes of this disease like an umbrella. The differentiation of these phenotypes and their overlaps is becoming increasingly important, as the phenotype-specific treatment approaches of today are not effective with every form of asthma. These approaches include the strategy of allergen avoidance, allergen immunotherapy and, most importantly, the newly available biologics for asthma.

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This trial evaluates whether nocturnal oxygen therapy (NOT) during a stay at 2048 m improves altitude-induced exercise intolerance in lowlanders with chronic obstructive pulmonary disease (COPD). 32 lowlanders with moderate to severe COPD, mean ± SD forced expiratory volume in the first second of expiration (FEV) 54 ± 13% predicted, stayed for 2 days at 2048 m twice, once with NOT, once with placebo according to a randomized, crossover trial with a 2-week washout period at < 800 m in-between. Semi-supine, constant-load cycle exercise to exhaustion at 60% of maximal work-rate was performed at 490 m and after the first night at 2048 m.

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Ex vivo lung perfusion (EVLP) has been implemented to increase the number of donor lungs available for transplantation. The use of K(ATP) channel modulators during EVLP experiments may protect against lung ischemia-reperfusion injury and may inhibit the formation of reactive oxygen species. In a rat model of donation after circulatory death with 2 h warm ischemic time, we evaluated rat lungs for a 4-hour time in EVLP containing either mitochondrial-specific or plasma membrane and/or sarcolemmal-specific forms of K(ATP) channel modulators.

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Introduction: We investigated whether nocturnal oxygen therapy (NOT) mitigates the increase of pulmonary artery pressure in patients during daytime with chronic obstructive pulmonary disease (COPD) traveling to altitude.

Methods: Patients with COPD living below 800 m underwent examinations at 490 m and during two sojourns at 2,048 m (with a washout period of 2 weeks < 800 m between altitude sojourns). During nights at altitude, patients received either NOT (3 L/min) or placebo (ambient air 3 L/min) via nasal cannula according to a randomized crossover design.

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Altitude exposure induces hypoxaemia in patients with chronic obstructive pulmonary disease (COPD), particularly during sleep. The present study tested the hypothesis in patients with COPD staying overnight at high altitude that nocturnal arterial hypoxaemia is associated with impaired cerebral tissue oxygenation (CTO). A total of 35 patients with moderate-to-severe COPD, living at <800 m (mean [SD] age 62.

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Chronic obstructive pulmonary disease (COPD) is associated with cardiovascular disease. We investigated whether sleeping at altitude increases nocturnal heart rate (HR) and other markers of cardiovascular risk or arrhythmias in lowlanders with COPD and whether this can be prevented by nocturnal oxygen therapy (NOT). Twenty-four COPD patients, with median age of 66 years and forced expiratory volume in 1 s (FEV) 55% predicted, living <800 m underwent sleep studies at Zurich (490 m) and during 2 sojourns of 2 days each at St.

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Background: In patients with obstructive sleep apnea syndrome (OSAS), the preference-based, health-related quality of life in terms of utility has not been extensively studied.

Objective: To address this point, we compared the performance of different instruments assessing utility in patients with OSAS undergoing continuous positive airway pressure (CPAP) therapy.

Materials And Methods: Data of 208 patients with OSAS (28 women, mean ± SE age 54.

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Stable patients with pulmonary arterial or chronic thromboembolic pulmonary hypertension (PH) wish to undergo altitude sojourns or air travel but fear disease worsening. This pilot study investigates health effects of altitude sojourns and potential benefits of nocturnal oxygen therapy (NOT) in PH patients. Nine stable PH patients, age 65 (47; 71) years, 5 women, in NYHA class II, on optimized medication, were investigated at 490 m and during two sojourns of 2 days/nights at 2,048 m, once using NOT, once placebo (ambient air), 3 L/min per nasal cannula, according to a randomized crossover design with 2 weeks washout at <800 m.

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Physical and Clinical Aspects of Inhalation Therapy for Asthma and COPD Inhalations form the basis of the medicinal treatment of respiratory diseases. In recent years, therapy has become more complex for patients, but also for medical professionals, as new systems have come onto the market. The knowledge required for this shall be conveyed in this article.

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High-altitude pulmonary hypertension (HAPH) is an altitude-related illness associated with hypoxaemia that may promote sympathetic excitation and prolongation of the QT interval. The present case-control study tests whether QT intervals, markers of malignant cardiac arrhythmias, are prolonged in highlanders with HAPH (HAPH+) compared to healthy highlanders (HH) and healthy lowlanders (LL). The mean pulmonary artery pressure (mPAP) was measured by echocardiography in 18 HAPH+ (mPAP, 34 mmHg) and 18 HH (mPAP, 23 mmHg) at 3,250 m, and 18 LL (mPAP, 18 mmHg) at 760 m, Kyrgyzstan (p < .

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Importance: There are no established measures to prevent nocturnal breathing disturbances and other altitude-related adverse health effects (ARAHEs) among lowlanders with chronic obstructive pulmonary disease (COPD) traveling to high altitude.

Objective: To evaluate whether nocturnal oxygen therapy (NOT) prevents nocturnal hypoxemia and breathing disturbances during the first night of a stay at 2048 m and reduces the incidence of ARAHEs.

Design, Setting, And Participants: This randomized, placebo-controlled crossover trial was performed from January to October 2014 with 32 patients with COPD living below 800 m with forced expiratory volume in the first second of expiration (FEV1) between 30% and 80% predicted, pulse oximetry of at least 92%, not requiring oxygen therapy, and without history of sleep apnea.

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Purpose: Patients with COPD might be particularly susceptible to hypoxia-induced autonomic dysregulation. Decreased baroreflex sensitivity (BRS) and increased blood pressure (BP) variability (BPV) are markers of impaired cardiovascular autonomic regulation and there is evidence for an association between decreased BRS/increased BPV and high cardiovascular risk. The aim of this study was to evaluate the effect of short-term exposure to moderate altitude on BP and measures of cardiovascular autonomic regulation in COPD patients.

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Importance: During mountain travel, patients with chronic obstructive pulmonary disease (COPD) are at risk of experiencing severe hypoxemia, in particular, during sleep.

Objective: To evaluate whether preventive dexamethasone treatment improves nocturnal oxygenation in lowlanders with COPD at 3100 m.

Design, Setting, And Participants: A randomized, placebo-controlled, double-blind, parallel trial was performed from May 1 to August 31, 2015, in 118 patients with COPD (forced expiratory volume in the first second of expiration [FEV1] >50% predicted, pulse oximetry at 760 m ≥92%) who were living at altitudes below 800 m.

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Study Objectives: Patients with chronic obstructive pulmonary disease (COPD) have impaired pulmonary gas exchange near sea level. The purpose of the current study was to investigate whether exposure to hypobaric hypoxia during a stay at altitude affects nocturnal oxygen saturation, breathing pattern, and sleep in patients with moderate to severe COPD.

Methods: Thirty-two patients with COPD, median age 67 years, FEV1 59% predicted, PaO2 68 mmHg, living below 800 m, underwent polysomnography and questionnaire evaluations in Zurich (490 m), and in Swiss Alpine villages at 1650 and 2590 m, for two nights each, in random order.

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Article Synopsis
  • - This study aimed to assess how traveling to high altitudes affects exercise performance and symptoms in lowlanders with Chronic Obstructive Pulmonary Disease (COPD) using a randomized crossover trial design.
  • - Forty COPD patients participated in the trial, spending two days at different altitudes (490 m, 1,650 m, and 2,590 m) while their exercise capacity (measured by the six-minute walk distance) and health effects were monitored.
  • - Results showed that exercise performance decreased significantly at higher altitudes, with about 24% of participants needing oxygen therapy or relocation due to adverse health effects, highlighting the need for caution in advising COPD patients about altitude travel.
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