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Review on radiological evolution of COVID-19 pneumonia using computed tomography. World J Radiol 2021; 13:294-306. [PMID: 34630915 PMCID: PMC8473435 DOI: 10.4329/wjr.v13.i9.294] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 07/28/2021] [Accepted: 08/13/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Pneumonia is the main manifestation of coronavirus disease 2019 (COVID-19) infection. Chest computed tomography is recommended for the initial evaluation of the disease; this technique can also be helpful to monitor the disease progression and evaluate the therapeutic efficacy.
AIM To review the currently available literature regarding the radiological follow-up of COVID-19-related lung alterations using the computed tomography scan, to describe the evidence about the dynamic evolution of COVID-19 pneumonia and verify the potential usefulness of the radiological follow-up.
METHODS We used pertinent keywords on PubMed to select relevant studies; the articles we considered were published until October 30, 2020. Through this selection, 69 studies were identified, and 16 were finally included in the review.
RESULTS Summarizing the included works’ findings, we identified well-defined stages in the short follow-up time frame. A radiographic deterioration reaching a peak roughly within the first 2 wk; after the peak, an absorption process and repairing signs are observed. At later radiological follow-up, with the limitation of little evidence available, the lesions usually did not recover completely.
CONCLUSION Following computed tomography scan evolution over time could help physicians better understand the clinical impact of COVID-19 pneumonia and manage the possible sequelae; a longer follow-up is advisable to verify the complete resolution or the presence of long-term damage.
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Cryptogenic Fibrosing Pleuritis. Eur J Case Rep Intern Med 2021; 8:002498. [PMID: 34123940 DOI: 10.12890/2021_002498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 03/20/2021] [Indexed: 11/05/2022] Open
Abstract
We report the case of a 46-year-old male patient who was referred for chest pain and bilateral pleural effusion. Despite treatment with antibiotics and steroids, the pleural effusion worsened over a few months until pulmonary function was halved. The CT scan showed bilateral pleural thickening with right basal opacity. Histology revealed extensive fibrotic tissue with focal collections of lymphocytes and giant cells without traces of asbestos bodies. Since no evidence of an infectious, embolic or occupational aetiology was found, this bilateral pleural effusion progressing to diffuse pleural thickening was diagnosed as cryptogenic fibrosing pleuritis, a rare pleural disease. LEARNING POINTS Bilateral pleural effusion progressing to diffuse pleural thickening was diagnosed as cryptogenic fibrosing pleuritis, a rare pleural disease.Cryptogenic fibrosing pleuritis was treated with high-dose corticosteroids.The patient showed stable disease at 6-year follow-up.
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Ventilation Heterogeneity in Asthma and COPD: The Value of the Poorly Communicating Fraction as the Ratio of Total Lung Capacity to Alveolar Volume. Respiration 2021; 100:404-410. [PMID: 33784705 DOI: 10.1159/000513954] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 12/18/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The ventilation heterogeneity (VH) is reliably assessed by the multiple-breath nitrogen washout (MBNW), which provides indices of conductive (Scond) and acinar (Sacin) VH as well as the lung clearance index (LCI), an index of global VH. VH can be alternatively measured by the poorly communicating fraction (PCF), that is, the ratio of total lung capacity by body plethysmography to alveolar volume from the single-breath lung diffusing capacity measurement. OBJECTIVES Our objective was to assess VH by PCF and MBNW in patients with asthma and with COPD and to compare PCF and MBNW parameters in both patient groups. METHOD We studied 35 asthmatic patients and 45 patients with COPD. Each patient performed spirometry, body plethysmography, diffusing capacity, and MBNW test. RESULTS Compared to COPD patients, asthmatics showed a significantly lesser degree of airflow obstruction and lung hyperinflation. In asthmatic patients, both PCF and LCI and Sacin values were significantly lower than the corresponding ones of COPD patients. In addition, in both patient groups, PCF showed a positive correlation with LCI (p < 0.05) and Sacin (p < 0.05), but not with Scond. Lastly, COPD patients with PCF >30% were highly likely to have a value ≥2 of the mMRC dyspnea scale. CONCLUSIONS These results showed that PCF, a readily measure derived from routine pulmonary function testing, can provide a comprehensive measure of both global and acinar VH in asthma and in COPD patients and can be considered as a comparable tool to the well-established MBNW technique.
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Serum markers of pulmonary epithelial damage in systemic sclerosis-associated interstitial lung disease and disease progression. Respirology 2020; 26:461-468. [PMID: 33336433 DOI: 10.1111/resp.13988] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 10/22/2020] [Accepted: 11/24/2020] [Indexed: 01/01/2023]
Abstract
BACKGROUND AND OBJECTIVE The course of systemic sclerosis-associated interstitial lung disease (SSc-ILD) is highly variable, and accurate prognostic markers are needed. KL-6 is a mucin-like glycoprotein (MUC1) expressed by type II pneumocytes, while CYFRA 21-1 is expressed by alveolar and bronchiolar epithelial cells. Both are released into the blood from cell injury. METHODS Serum KL-6 and CYFRA 21-1 levels were measured in a retrospective (n = 189) and a prospective (n = 118) cohort of SSc patients. Genotyping of MUC1 rs4072037 was performed. Linear mixed-effect models were used to evaluate the relationship with change in lung function parameters over time, while association with survival was evaluated with Cox proportional hazard analysis. RESULTS In both cohorts, KL-6 and CYFRA 21-1 were highest in patients with lung involvement, and in patients with extensive rather than limited ILD. KL-6 was higher in patients carrying the MUC1 rs4072037 G allele in both cohorts. In patients with SSc-ILD, serum KL-6, but not CYFRA 21-1, was significantly associated with DLCO decline in both cohorts (P = 0.001 and P = 0.004, respectively), and with FVC decline in the retrospective cohort (P = 0.005), but not the prospective cohort. When combining the cohorts and subgrouping by severity (median CPI = 45.97), KL-6 remained predictive of decline in DLCO in both milder (P = 0.007) and more severe disease (P = 0.02) on multivariable analysis correcting for age, gender, ethnicity, smoking history and MUC1 allele carriage. CONCLUSION Our results suggest serum KL-6 predicts decline in lung function in SSc, suggesting its clinical utility in risk stratification for progressive SSc-ILD.
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Small airway dysfunction predicts excess ventilation and dynamic hyperinflation during exercise in patients with COPD. RESPIRATORY MEDICINE: X 2020. [DOI: 10.1016/j.yrmex.2020.100020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Systemic thromboembolism from a misdiagnosed non-bacterial thrombotic endocarditis in a patient with lung cancer: A case report. Oncol Lett 2020; 20:194. [PMID: 32952663 PMCID: PMC7479525 DOI: 10.3892/ol.2020.12056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 03/05/2020] [Indexed: 12/03/2022] Open
Abstract
Thromboembolic events are frequent in patients with cancer, commonly involving the venous and pulmonary circulation. The arterial system is rarely implicated in embolism and, when involved, a cardiogenic origin should always be excluded. In the present study, a case of a patient who developed multiple embolic events concomitantly with the diagnosis of locally-advanced non-small cell lung cancer with high expression levels of programmed death-ligand 1 (PD-L1) in >50% of tumor cells is reported. A cardiac defect interpreted as a patent foramen ovale required low molecular weight heparin administration. Despite the anti-coagulant therapy, before first-line anticancer treatment with pembrolizumab immunotherapy could be administered due to high PD-L1 expression levels, a new hospitalization was required due to the onset of novel ischemic manifestation. New transthoracic and transesophageal echocardiography revealed a previously misdiagnosed vegetation of the mitral valve that caused systemic embolization. The lack of any sign of infection led to the diagnosis of a non-bacterial thrombotic endocarditis (NBTE), whose embolic sprouting gave rise to the widespread ischemic events. No active anticancer treatment was feasible due to the rapid progression of the disease. NBTE can evolve quickly, eventually preventing any chance of treatment targeting the primary cause, which in the present study was lung cancer. If NBTE can be correctly diagnosed sooner then there may be the potential for anticancer therapy that does not worsen the hypercoagulability state, thus improving cancer-associated survival.
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THU0616-HPR EXPIRATORY FLOW ACCELERATOR (EFA) IN SYSTEMIC SCLEROSIS PATIENTS WITH MUCUS HYPERSECRETION, PRODUCTIVE COUGH AND DYSPNOEA: PRELIMINARY RESULTS FROM A HOME-BASED AIRWAY CLEARANCE TECHNIQUE DAILY PROGRAM. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.2434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Systemic sclerosis (SSc) is a chronic disease with frequent lung involvement. As mucociliary clearance is impaired, mucus retention and frequent pulmonary infections, increase morbidity and mortality (1).Airway clearance techniques (ACT) enhance removal of mucus from the airways. Expiratory flow accelerator (EFA) is a new technology that promotes deep and gentle drainage of the bronchial secretions, through the Venturi effect. No respiratory effort is required and no negative pressure is generated, avoiding risk of bronchial collapse (2).Objectives:The aim of this study was to describe the effectiveness of EFA in improving pulmonary symptoms in SSc patients.Methods:SSc patients with daily productive cough, frequent pulmonary exacerbations, exertional dyspnea and/or reduced physical activity were selected. All of them underwent a home-based ACT program with EFA. A Respiratory Physiotherapist (RT) trained each patient to use the device 3 times a day, 15 minutes each session. Every subject compiled the Saint George’s Respiratory Questionnaire (SGRQ) and scleroderma Health Assessment Questionnaire (SHAQ) at baseline, 30, 90 and 180 days from the beginning. Statistical analysis has been carried out with General linear model for repeated measures. A value of p<0.05 was considered statistically significant.Results:8 patients were enrolled (M:F=1:7), median age 54 (IC95% 46-69) years. Interstitial lung disease affected the majority of them (7/8). SGRQ total score and SHAQ domain for respiratory symptoms decreased over time (p= 0.003 and p= 0.005). In particular, there was an improvement in two SGRQ domains: activities (p= 0.013) and symptoms (p= 0.005) (fig.1).Figure 1Conclusion:This is the first study to investigate the effect of EFA technology on airway clearance in SSc patients. The observations suggest the importance of a daily ACT program with EFA in improving respiratory symptoms. This technology appear to be extremely promising in SS patient management as it is well tolerated and it has the potential to slow down the pulmonary disease progression by limiting bronchial infections.References:[1]Tyndall AJ et al. Causes and risk factors for death in systemic sclerosis: a study from the EULAR Scleroderma Trials and Research (EUSTAR) database. Ann Rheum Dis 2010;69:1809–15.[2]Zampogna E, et al. Expiratory Flow Accelerator (EFA) technique on mucus hypersecretion of COPD patients with reduced cough efficiency after a severe exacerbation. Int Clin Med 2019;3:1-6.Disclosure of Interests:Silvia faverzani: None declared, Andrea Becciolini Speakers bureau: Sanofi-Genzyme, UCB and AbbVie, ernesto crisafulli: None declared, filippo nocera: None declared, eleonora di donato: None declared, Flavio Mozzani: None declared, michele riva: None declared, Daniele Santilli: None declared, lorenza monica: None declared, annalisa barbieri: None declared, lissette barone: None declared, maurizio marvisi: None declared, veronica alfieri: None declared, annalisa frizzelli: None declared, Alfredo Chetta: None declared, ALARICO ARIANI: None declared
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Complication of tracheotomy: A case of fatal pneumomediastinum in spontaneous ventilation. MEDICINE, SCIENCE, AND THE LAW 2020; 60:75-79. [PMID: 31896298 DOI: 10.1177/0025802419852188] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Pneumomediastinum is defined as the presence of free air in the mediastinal space. It is classically defined as either spontaneous or secondary pneumomediastinum, depending on whether a cause can be recognised (e.g. trauma, intrathoracic infections or medical procedures such as dental or facial surgery and tracheotomy). It can be associated with pneumothorax and subcutaneous emphysema of the cervico-facial area because of the ascent of the air from the mediastinum towards the neck. To our knowledge, only one case of death from pneumomediastinum due to tracheotomy has previously been recorded. We report a case of death due to pneumomediastinum, which occurred in a patient with a tracheotomy during spontaneous ventilation. The 65-year-old man underwent surgical mandibular reconstruction with a custom-made titanium plate for osteonecrosis with temporary tracheotomy. The patient received mechanical ventilation only during surgery. On day 3, when the tracheotomy was closed, the patient experienced a rapid deterioration of lung ventilation with initial development of subcutaneous cervical emphysema. Although a tracheotomy tube was promptly inserted, the patient developed massive subcutaneous cervico-facial emphysema with a drop in oxygen capillary saturation. The man died after half an hour of resuscitation due to a massive pneumomediastinum. In this paper, we discuss the epidemiology, aetiology, physiopathology, complications and necropsy findings in pneumomediastinum, focusing on the aspects of our case compared to the only other case reported.
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A pulmonary infection by Actinomyces odontolyticus and Veillonella atypica in an immunocompetent patient with dental caries. Respirol Case Rep 2019; 7:e00493. [PMID: 31576208 PMCID: PMC6768442 DOI: 10.1002/rcr2.493] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 08/29/2019] [Accepted: 09/04/2019] [Indexed: 01/04/2023] Open
Abstract
Actinomycosis is a rare, chronic granulomatous infection, frequently associated with immunocompromised states, but it can also affect healthy people. Here, we report a case of a pulmonary infection by Actinomyces odontolitycus and Veillonella atypica due to a dental caries in an immunocompetent 65-year-old man patient.
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Physiological predictors of exertional oxygen desaturation in patients with fibrotic interstitial lung disease. Eur Respir J 2019; 55:13993003.01681-2019. [DOI: 10.1183/13993003.01681-2019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 10/25/2019] [Indexed: 11/05/2022]
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Overall mortality in combined pulmonary fibrosis and emphysema related to systemic sclerosis. RMD Open 2019; 5:e000820. [PMID: 30886735 PMCID: PMC6397433 DOI: 10.1136/rmdopen-2018-000820] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 11/13/2018] [Accepted: 12/17/2018] [Indexed: 12/02/2022] Open
Abstract
Objectives This multicentre study aimed to investigate the overall mortality of combined pulmonary fibrosis and emphysema (CPFE) in systemic sclerosis (SSc) and to compare CPFE-SSc characteristics with those of other SSc subtypes (with interstitial lung disease—ILD, emphysema or neither). Methods Chest CTs, anamnestic data, immunological profile and pulmonary function tests of patients with SSc were retrospectively collected. Each chest CT underwent a semiquantitative assessment blindly performed by three radiologists. Patients were clustered in four groups: SSc-CPFE, SSc-ILD, SSc-emphysema and other-SSc (without ILD nor emphysema). The overall mortality of these groups was calculated by Kaplan-Meier method and compared with the stratified log-rank test; Kruskal-Wallis test, t-Student test and χ² test assessed the differences between groups. P<0.05 was considered statistically significant. Results We enrolled 470 patients (1959 patient-year); 15.5 % (73/470) died during the follow-up. Compared with the SSc-ILD and other-SSc, in SSc-CPFE there was a higher prevalence of males, lower anticentromere antibodies prevalence and a more reduced pulmonary function (p<0.05). The Kaplan-Meier survival analysis demonstrates a significantly worse survival in patients with SSc-CPFE (HR vs SSc-ILD, vs SSc-emphysema and vs other-SSc, respectively 1.6 (CI 0.5 to 5.2), 1.6 (CI 0.7 to 3.8) and 2.8 (CI 1.2 to 6.6). Conclusions CPFE increases the mortality risk in SSc along with a highly impaired lung function. These findings strengthen the importance to take into account emphysema in patients with SSc with ILD.
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Research highlights from the 2018 ERS International Congress: interstitial lung diseases. ERJ Open Res 2019; 5:00215-2018. [PMID: 30792985 PMCID: PMC6378342 DOI: 10.1183/23120541.00215-2018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 12/26/2018] [Indexed: 01/28/2023] Open
Abstract
This article reviews a selection of the scientific presentations on interstitial lung disease (ILD)/diffuse parenchymal lung disease (DPLD) that were made at the 2018 European Respiratory Society (ERS) International Congress in Paris. A number of advances in the epidemiology, pathogenesis, diagnosis and treatment of these disorders were presented and discussed by clinicians and researchers. The research topics span over all four groups of ERS Assembly 12: Interstitial Lung Diseases (Group 12.01: Idiopathic interstitial pneumonias; Group 12.02: ILD/DPLD of known origin; Group 12.03: Sarcoidosis and other granulomatous ILD/DPLD; Group 12.04: Rare ILD/DPLD).
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A High Degree of Dyspnea Is Associated With Poor Maximum Exercise Capacity in Subjects With COPD With the Same Severity of Air-Flow Obstruction. Respir Care 2018; 64:390-397. [PMID: 30425167 PMCID: PMC10044193 DOI: 10.4187/respcare.06336] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND In patients with COPD, limited data have been reported concerning the association between dyspnea perception and exercise tests. Moreover, the perception of dyspnea has not been analyzed in patients with the same severity of air-flow obstruction. The aim of our study was to evaluate the relationship between the degree of dyspnea and exercise capacity in subjects with COPD who had the same severity of air-flow obstruction. METHODS We assessed dyspnea perception and maximum exercise capacity by using the modified Medical Research Council dyspnea scale (mMRC) questionnaire and by using the symptom-limited incremental cardiopulmonary exercise test, respectively. A propensity score matching was used to obtain the balance between the subjects with COPD and with an mMRC questionnaire score <2 and ≥2 (mMRC score) according to the severity of air-flow obstruction. RESULTS A total of 249 ambulatory adult patients with stable COPD (mean age, 68 y) were considered in the full cohort. After propensity score analysis, 160 subjects (65% men; mean ± SD FEV1, 47.5 ± 12.8% of predicted) were included in our study cohort. The subjects with an mMRC questionnaire score ≥2 in comparison with those with an mMRC questionnaire score <2 showed lower values in oxygen uptake at peak (VO2 max) (P = .002) and in maximum work load (P < .001). In the regression models, the mMRC questionnaire score was able to predict oxygen uptake at peak (P < .001) and at maximum work load (P < .001). CONCLUSIONS In subjects with COPD and with the same severity of air-flow obstruction, a high score in dyspnea was related to a poor maximum exercise capacity. Our results support the view that, in COPD, the severity of air-flow obstruction was less informative than symptoms in the combined assessment of the disease.
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Effect of ambulatory oxygen on quality of life for patients with fibrotic lung disease (AmbOx): a prospective, open-label, mixed-method, crossover randomised controlled trial. THE LANCET RESPIRATORY MEDICINE 2018; 6:759-770. [DOI: 10.1016/s2213-2600(18)30289-3] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 06/27/2018] [Accepted: 06/28/2018] [Indexed: 01/23/2023]
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Heart rate recovery is associated with ventilatory constraints and excess ventilation during exercise in patients with chronic obstructive pulmonary disease. Eur J Prev Cardiol 2018; 25:1667-1674. [PMID: 30033754 DOI: 10.1177/2047487318789756] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background Heart rate recovery delay is a marker of cardiac autonomic dysfunction. In chronic obstructive pulmonary disease patients, the ventilatory response to exercise during incremental cardiopulmonary exercise test may add information about dynamic hyperinflation by low values of inspiratory capacity/total lung capacity ratio (at peak) and excess ventilation by the slope of minute ventilation to carbon dioxide output ratio (VE/VCO2 slope). We aimed to assess if the ventilatory response to exercise might be a determinant for heart rate recovery delay. Design An observational, prospective study. Methods Anthropometric characteristics, lung function and cardiopulmonary exercise test data were recorded in chronic obstructive pulmonary disease outpatients. A cut-off of heart rate recovery of 12 or more beats was used to define heart rate recovery delay. Results Of 254 patients enrolled, 156 (61%) showed heart rate recovery delay. As compared to patients with normal heart rate recovery, patients with delay were older, with a worse lung function and with lower values of peak oxygen uptake, maximal workload, oxygen pulse at rest and at peak, and inspiratory capacity/total lung capacity at peak. Conversely, VE/VCO2 slope and dyspnoea and leg fatigue perception at peak were higher in patients with heart rate recovery delay. In the multivariate regression model adjusted for age, sex, fat-free mass, heart rate at rest and use of β-blockers, we found that inspiratory capacity/total lung capacity at peak (<0.25) (odds ratio 2.61; P = 0.007) and VE/VCO2 slope (>32) (odds ratio 2.26; P = 0.018) predict the risk of heart rate recovery delay. Conclusions In chronic obstructive pulmonary disease outpatients, heart rate recovery is associated with dynamic hyperinflation and excess ventilation during exercise.
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Spot the trachea! A wide paratracheal air cyst of not easy definition. ACTA BIO-MEDICA : ATENEI PARMENSIS 2018; 89:260-261. [PMID: 29957761 PMCID: PMC6179008 DOI: 10.23750/abm.v89i2.5610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 07/19/2016] [Indexed: 11/23/2022]
Abstract
We report a case of a 68-year-old woman with an occasional image of a wide paratracheal oval air cyst of not easy definition. Patient had never received a chest X-ray and she had never suffered from symptoms that needed to investigate the trachea or the neck. The diagnostic hypothesis was a wide tracheal diverticulum or a bronchogenic cyst. (www.actabiomedica.it)
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Next generation beta adrenoreceptor agonists for the treatment of asthma. Expert Opin Pharmacother 2017; 18:1499-1505. [PMID: 28891349 DOI: 10.1080/14656566.2017.1378348] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
INTRODUCTION A fixed-dose inhalation of a long-acting β-agonist (LABA) and inhaled corticosteroids (ICS) is commonly recommended for moderate to severe asthmatic patients not adequately controlled by an ICS only. In order to improve the patients' adherence and the control of disease there is a noteworthy interest for the next generation inhaled β adrenoreceptor agonists maintaining an over 24 hours bronchodilatation and used once-daily (ultra-LABAs). This review focuses on the currently available evidences on the clinical role of any single ultra-LABAs in the treatment of asthmatic patients. Areas covered: New ultra-LABAs have been developed in recent years for the treatment of asthma. In particular, several evidences in asthmatic patients include indacaterol, vilanterol, olodaterol, and abediterol. Expert opinion: Pharmacologically, all new ultra-LABAs considered have demonstrated a good ability to maintain a true bronchodilatation for over 24 hours and a good safety profile. This aspect could be a key point to improve the patient's perspective, the adherence to the treatment regimens and therefore the control of disease. At this time, however, limited data are available and no ultra-LABA+ICS may be recommended as preferred.
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Quantitative chest computed tomography is associated with two prediction models of mortality in interstitial lung disease related to systemic sclerosis. Rheumatology (Oxford) 2017; 56:922-927. [PMID: 28160007 DOI: 10.1093/rheumatology/kew480] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Indexed: 11/14/2022] Open
Abstract
Objective In this multicentre study, we aimed to evaluate the capacity of a computer-assisted automated QCT method to identify patients with SSc-associated interstitial lung disease (SSc-ILD) with high mortality risk according to validated composite clinical indexes (ILD-Gender, Age, Physiology index and du Bois index). Methods Chest CT, anamnestic data and pulmonary function tests of 146 patients with SSc were retrospectively collected, and the ILD-Gender, Age, Physiology score and DuBois index were calculated. Each chest CT underwent an operator-independent quantitative assessment performed with a free medical image viewer (Horos). The correlation between clinical prediction models and QCT parameters was tested. A value of P < 0.05 was considered statistically significant. Results Most QCT parameters had a statistically different distribution in patients with diverging mortality risk according to both clinical prediction models (P < 0.01). The cut-offs of QCT parameters were calculated by receiver operating characteristic curve analysis, and most of them could discriminate patients with different mortality risk according to clinical prediction models. Conclusion QCT assessment of SSc-ILD can discriminate between well-defined different mortality risk categories, supporting its prognostic value. These findings, together with the operator independence, strengthen the validity and clinical usefulness of QCT for assessment of SSc-ILD.
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Abstract
AbstractSarcoidosis is a systemic granulomatous disorder of unknown etiology, with a predilection for the respiratory system, involved in more than 90% of cases, with considerable variability in terms of patterns and prognostic implications. A protean interplay between genetic susceptibility and antigen exposure in selected environmental contexts is likely to define not only the risk for disease but also the different clinical phenotypes. Advances in imaging and functional tests over the past decades have increasingly broadened the awareness of the wide spectrum of features potentially occurring in pulmonary sarcoidosis, while the evolution of diagnostic techniques in interventional pulmonology has increased the possibility of obtaining tissue characterization more easily, by means of ultrasound-guided tools and cryotechnology. However, histological proof is not always needed, as, in selected scenarios with compatible clinical and imaging picture, a confirmatory biopsy is perceived as redundant. The diagnostic workup should be tailored on a case-by-case basis, according to an integrated assessment of clinical features, local resources, and expertise availability. Owing to the heterogeneity of possible clinical scenarios and the paucity of evidence-based data on treatments, a standardized clinical management has yet to be established, and general approach usually reflects expert opinion from accumulated clinical data. Key elements of decision-making process are to assess the baseline severity of disease, to stratify the risk of progression, and to define the goals of treatment.
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Patient-reported outcome measures in idiopathic pulmonary fibrosis: Where do we stand? Respirology 2017; 22:628-629. [PMID: 28328170 DOI: 10.1111/resp.13030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 02/26/2017] [Indexed: 11/29/2022]
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AB0930 Quantitative Chest Ct in Ild-Ssc Patients with Divergent Risks of Mortality. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.2995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Are interstitial lung abnormalities associated with COPD? A nested case-control study. Int J Chron Obstruct Pulmon Dis 2016; 11:1087-96. [PMID: 27307724 PMCID: PMC4887075 DOI: 10.2147/copd.s103256] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Purpose In this study, we tested the association between COPD and interstitial lung abnormality (ILA), notably in relation to the presence of computed tomography (CT) signs of lung fibrosis. Patients and methods COPD cases were selected from participants undergoing lung cancer screening (Multicentric Italian Lung Detection trial) for airflow obstruction (n=311/2,303, 13.5%) and 146 consecutive patients with clinical COPD. In all, 457 COPD cases were selected and classified according to the stages of Global Initiative for Chronic Obstructive Lung Disease. A nested matching (case:control = 1:2) according to age, sex, and smoking history was operated between each COPD case and two control subjects from Multicentric Italian Lung Detection trial without airflow obstruction. Low-dose CT scans of COPD cases and controls were reviewed for the presence of ILA, which were classified into definite or indeterminate according to the presence of signs of lung fibrosis. Results The frequency of definite ILA was similar between COPD cases and controls (P=0.2), independent of the presence of signs of lung fibrosis (P=0.07). Combined definite and indeterminate ILA was homogeneously distributed across Global Initiative for Chronic Obstructive Lung Disease stages (P=0.6). Definite ILA was directly associated with current smoker status (odds ratio [OR] 4.05, 95% confidence interval [CI]: 2.2–7.4) and increasing pack-years (OR 1.01, 95% CI: 1–1.02). Subjects with any fibrotic ILA were more likely to be older (OR 1.17, 95% CI: 1.10–1.25) and male (OR 8.58, 95% CI: 1.58–68.9). Conclusion There was no association between COPD and definite ILA. However, low-dose CT signs of lung fibrosis were also observed in COPD, and their clinical relevance is yet to be determined.
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Quantitative CT indexes are significantly associated with exercise oxygen desaturation in interstitial lung disease related to systemic sclerosis. CLINICAL RESPIRATORY JOURNAL 2016; 11:983-989. [DOI: 10.1111/crj.12451] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 11/25/2015] [Accepted: 01/09/2016] [Indexed: 11/29/2022]
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Small airway dysfunction is associated to excessive bronchoconstriction in asthmatic patients. Respir Res 2014; 15:86. [PMID: 25158694 PMCID: PMC4243812 DOI: 10.1186/s12931-014-0086-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 07/20/2014] [Indexed: 01/22/2023] Open
Abstract
Background We investigated whether a relationship between small airways dysfunction and bronchial hyperresponsiveness (BHR), expressed both in terms of ease of airway narrowing and of excessive bronchoconstriction, could be demonstrated in asthma. Methods 63 (36 F; mean age 42 yr ± 14) stable, mild-to-moderate asthmatic patients (FEV1 92% pred ±14; FEV1/FVC 75% ± 8) underwent the methacholine challenge test (MCT). The degree of BHR was expressed as PD20 (in μg) and as ∆FVC%. Peripheral airway resistance was measured pre- and post-MCT by impulse oscillometry system (IOS) and expressed as R5-R20 (in kPa sL−1). Results All patients showed BHR to methacholine (PD20 < 1600 μg) with a PD20 geometric (95% CI) mean value of 181(132–249) μg and a ∆FVC% mean value of 13.6% ± 5.1, ranging 2.5 to 29.5%. 30 out of 63 patients had R5-R20 > 0.03 kPa sL−1 (>upper normal limit) and showed ∆FVC%, but not PD20 values significantly different from the 33 patients who had R5-R20 ≤ 0.03 kPa sL−1 (15.8% ± 4.6 vs 11.5% ± 4.8, p < 0.01 and 156(96–254) μg vs 207 (134–322) μg, p = 0.382). In addition, ∆FVC% values were significantly related to the corresponding pre- (r = 0.451, p < 0.001) and post-MCT (r = 0.376, p < 0.01) R5-R20 values. Conclusions Our results show that in asthmatic patients, small airway dysfunction, as assessed by IOS, is strictly associated to BHR, expressed as excessive bronchoconstriction, but not as ease of airway narrowing.
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[The status of peritoneal dialysis in Piedmont by 12/31/1997]. MINERVA UROL NEFROL 2001; 53:75-9. [PMID: 11455315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
BACKGROUND The aim of the study is to examine the situation of chronic uremia substitutive treatment by means of peritoneal dialysis in Piedmont on December 31, 1997 using data from the Piedmont regional dialysis and transplant register. METHODS Starting from the year 1981, data are reported (absolute, per million population, and according to different patient's anagraphic ages) about peritoneal dialysis prevalence and incidence; about basic nephropathies; drop-out from treatment; patient's rehabilitation; complications incidence, particularly peritonitis; patient's survival compared with survival of patients treated, during the same years with extracorporeal techniques. RESULTS The data demonstrate, during these years, an increase of peritoneal dialysis incidence and prevalence; patients' survival curves, compared with those of patients treated with extracorporeal techniques, are very similar during the first years of treatment and worse afterwards, but never reaching statistical significance. CONCLUSIONS They support Peritoneal Dialysis as a very good kind of substitutive treatment for some years, but this opinion deserves further examination and investigation on a longer period of time.
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Abstract
Along with the numerous technological improvements in molecular biology, polymerase chain reaction, which permits analysis of sequences of a very small amount of biological material, enables evaluation of hemodialysis-induced gene transcription of inflammatory cytokines. Blood samples drawn from 22 hemodialysis patients, treated with cellulose-derived or synthetic membranes, were collected at 0 and 15 min of hemodialysis. Total RNA, purified from mononuclear cells, was reverse transcribed and cDNA amplified by polymerase chain reaction primed with specific oligomers in order to determine tumor necrosis factor alpha (TNF alpha), interleukin (IL) 1 beta and IL6 gene expression. Plasma samples were collected at 0 and 180 min for detection of mature cytokines by enzyme immunoassay with plates pre-coated with monoclonal antibodies to TNF alpha, IL1 beta and IL6. A significant increase in TNF alpha mRNA was detected at 15 min of hemodialysis in 12 of 22 patients: 5 of 9 treated with cuprophan; 3 of 3 with cellulose triacetate; 3 of 5 with polysulfone, and only 1 of 5 treated with polymethyl-methacrylate membranes. A parallel increase in IL1 beta or IL6 mRNA was detected, and significant relationships were found between TNF alpha and IL1 beta (p < 0.001), and IL1 beta and IL6 gene expression (p < 0.05). Increased levels of mature TNF alpha and IL1 beta molecules in plasma were detected in the majority of patients showing an increased cytokine gene expression. However, the absolute amount of cytokine mRNA transcription at 15 min did not predict the levels of mature molecules reached in plasma at 180 min. Cytokine mRNA transcription is quite common at the beginning of a dialysis run. Possibly due to intracellular degradation of critical sequences of cytokine mRNA, gene expression does not necessarily imply translation into mature protein. It is suggested that mechanisms related to cell-to-cell interaction, which may possibly involve procytokine biology, are needed to drive phenomena of cytokine activation to clinical effectiveness.
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[Acute kidney failure caused by cholesterol atheroembolism]. MINERVA UROL NEFROL 2000; 52:119-22. [PMID: 11227360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
BACKGROUND To describe the clinical aspects of renal failure due to cholesterol atheroembolism. METHODS An hospital based observational study on renal failure due to cholesterol atheroembolism was carried out. Twenty-two cases (19 males, mean age 68 yrs, range 53-83 yrs) were identified from January 1992 to September 1998. RESULTS Clinical symptoms were acute or rapidly progressive renal failure with blue toe and/or skin livedo reticularis in 13/22 cases (59%) and indolent progressive renal failure in 7/22 cases (32%). In 6/22 cases (27%) an abdominal organ involvement was evident; two (9%) had retinal cholesterol emboli, two (9%) peripheral and two (9%) central nervous system impairment. In 7 patients (32%) the cholesterol atheroembolism occurred spontaneously, while in 15 (68%) it followed invasive or interventional radiology (8 cases, 36%); cardiac or vascular surgery (4 cases, 18%); thrombolytic or anticoagulant therapy (3 cases, 14%). The time interval between the procedure at risk and the onset of symptoms or signs of cholesterol atheroembolism ranged between few hours to 60 days. Eleven patients (50%) required dialysis, which was then withheld in 4 cases (36%), owing to partial functional recovery after a median time of 30 days, ranging from 10 to 690 days. Median follow-up was 2.5 months (ranging from 2 days to 68 months), and eleven patients (50%) deceased. CONCLUSIONS Cholesterol atheroembolism is a cause of renal failure associated with high mortality rates; its prevention needs the skill of all physicians involved in the care of patients with severe atherosclerosis.
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Ig fromTrematomus bernacchii:A model for structural analysis of Ig from a cold adapted species. ACTA ACUST UNITED AC 2000. [DOI: 10.1080/11250000009356359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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cANCA positivity in a case of IgA glomerulonephritis (IgAGN) with necrotizing lesions. Nephrol Dial Transplant 1999; 14:797-8. [PMID: 10193848 DOI: 10.1093/ndt/14.3.797] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Processing of IgA aggregates in a rat model of chronic liver disease. CLINICAL IMMUNOLOGY AND IMMUNOPATHOLOGY 1997; 84:107-14. [PMID: 9245540 DOI: 10.1006/clin.1997.4357] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Heavy alcohol intake and/or lipotrope-deficient diet induced hepatocellular injury and mesangial deposition of IgA and often IgG in Lewis rats. The experimental animals showing more severe urinary abnormalities and histologic damage in the glomeruli had increased levels of IgA antibodies to dietary antigens and altered intestinal permeability. Based on human studies, the prolonged circulation of IgA-containing complexes associated with the liver disease could be envisaged as important for the development of mesangial IgA deposits. In order to verify this hypothesis, four groups (G) of Lewis rats were studied: G1 received thrice a weak an intragastric infusion of 1.5 ml/100 g body wt of whiskey; G2 rats were nourished with lipotrope-deficient diet; G3 rats were given both whiskey and LD diet; G4 rats were nourished with regular chow. After 12 weeks, heat-aggregated rat monomeric IgA was labeled with 133I and intravenously injected. Three control subgroups of rats, one given whiskey, one nourished with LD diet, and one with regular chow, were injected with radiolabeled heat-aggregated rat IgG. A large field-of-view digital gamma camera, equipped with an ultra-high-resolution collimator and interfaced to a dedicated computer, was used to analyze tracer kinetics and fate. The liver was the main organ involved in clearance of both test probes. The hepatic mean transit (MTT) was 11.4 +/- 11 min in G1 (proteinuria of 6.9 +/- 1.41 mg/day and hematuria +/+2), 221 +/- 19 min in G2 (proteinuria 9.1 +/- 0.64 mg/day and hematuria +2/+3), and 230 +/- 15 min in G3 (proteinuria 9.5 +/- 0.58 mg/day and hematuria +2/+3). In each case MTT value was found to be significantly prolonged compared to G4 (85 +/- 4 min). The multiple regression analysis showed that MTT values, proteinuria, and hematuria were significantly correlated (P < 0.01). Controls had trace amount proteinuria (0.82 +/- 0.17 mg/day, significantly lower than for each study group, P < 0.08) and undetectable hematuria. Similar results were obtained in control rats injected with aggregated IgG; i.e., MTT values were more prolonged in rats given whiskey or LD diet than normally nourished rats (P < 0.01). The lipotrope-deficient diet and the chronic alcohol abuse per se seem to lead to critical changes in hepatic uptake and catabolism of both an IgA and an IgG aggregate, which could account in turn for the reported appearance of renal immunoglobulin deposits in this experimental model. Due to the comparable delay in removal of IgA and IgG probes in equally nourished animals, additional factors are likely to be involved in the prominent deposition of IgA.
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[The complement system in kidney diseases]. Minerva Med 1997; 88:197-203. [PMID: 9280862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The multifaceted relations between complement system and immune-mediated nephropathies are reviewed. Several conditions in which either the complement activation induces renal damage without hypocomplementemia or hypocomplementemia occurs in the absence of circulating IC are reported as well as disorders in which immune complexes promote hypocomplementemia. The complement system is involved in the clearance of immune complexes, both modifying the immune complex size and favouring the physiologic neutralization by the erythrocyte transport system. In certain pathological conditions the immune complex intrinsic characteristic or genetic abnormalities prevent efficient removal from the blood stream. The purpose of the present review is to summarize these conditions, briefly describing their pathological consequences, and indicate a simple scheme to correctly interpret the biochemical abnormalities of the complement system in nephropathology.
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Early increase in blood nitric oxide, detected by electron paramagnetic resonance as nitrosylhaemoglobin, in haemodialysis. Nephrol Dial Transplant 1997; 12:292-7. [PMID: 9132648 DOI: 10.1093/ndt/12.2.292] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The objective of this study was to determine intradialytic blood levels of nitric oxide (NO), in patients undergoing chronic haemodialysis. This was done by detection of nitrosylhaemoglobin by a sensitive technique of spin trap electron paramagnetic resonance at 0, 5, 15, 60, 180 and 240 min of a 4-h standard bicarbonate dialysis, using the same dose (6000 U) of heparin and different dialysis membranes. The study group included 12 patients treated with cellulose-derived dialysis membranes (nine with cuprophan and three with cellulose triacetate) and 10 patients treated with synthetic membranes (five with polysulfone and five with polymethylmethacrylate). Control groups included 11 normal subjects and six patients with end-stage renal failure who were receiving intermittent peritoneal dialysis. Basal blood levels of nitrosylhaemoglobin in haemodialysis patients were significantly higher than normals, but similar to peritoneal dialysis patients. A significant increase (P < 0.01) in nitrosylhaemoglobin level was detected at 15 min of haemodialysis irrespective of the membrane used. A decrease to basal levels at 180 min was observed in all but two cuprophan-treated patients who, in contrast to the others, had a symptomatic hypotension at the end of the session and a further increase in blood nitric oxide. Patients undergoing peritoneal dialysis did not show any change in blood levels of nitrosylhaemoglobin during the first 180 min of the procedure. Thus, a constant increase in nitrosylhaemoglobin levels was observed early in haemodialysis, but not in peritoneal dialysis patients. Very preliminary evidence was obtained for a role of nitric oxide in the vascular instability at the end of haemodialysis in a few patients who had hypotensive episodes.
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A survey of the necessity of the hospitalization day in an Italian teaching hospital. QUALITY ASSURANCE IN HEALTH CARE : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY FOR QUALITY ASSURANCE IN HEALTH CARE 1991; 3:1-9. [PMID: 1873526 DOI: 10.1093/intqhc/3.1.1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
To assess the extent of inappropriate hospital use in an adult in-patients population we used a modified version of the Appropriateness Evaluation Protocol (A.E.P.) to evaluate retrospectively a cross-section of 273 patient-days in a large teaching hospital in the Greater Milan area. Overall, 41% were judged to represent inappropriate hospital use on the basis of the protocol's criteria. The rate of inappropriate hospital use was significantly associated with admitting specialty, ranging from 12% for surgery, to 20% for cardiology and to about 60% in psychiatric, geriatrics and neurology departments (p less than 0.01). Hospital days of patients with longer stays were more frequently inappropriate: a statistically significant trend of inappropriateness emerged ranging from 30% among patients with total length of stay (LOS) of 1-10 days to 60% among those with LOS greater than 30 days (p less than 0.01). This study confirms that there is a substantial rate of unnecessary use of hospitals but that such inappropriateness does not seem in most cases to be easily modifiable through "simple" organizational changes.
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Abstract
It is well known that the history of occupational therapy goes back to ancient times, although it was not until the Second World War that it began to receive greater attention and wider use. Today, despite important advances in studies and applications, a certain amount of empiricism persists, especially in Italy where there are not as yet distinct schools for occupational therapy and where consequently there is some criticism of the profession.
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[The Collins hand for arm amputees]. MINERVA ORTOPEDICA 1970; 21:47-50. [PMID: 5510054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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[Report of a visit to the Rehabilitation Services of the city of Edinburgh]. Minerva Med 1968; 59:3692-700. [PMID: 5677065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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[Collin's hand in patients with amputation of the arm]. GIORNALE ITALIANO DI CHEMIOTERAPIA 1968; 15:47-50. [PMID: 5744097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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