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Introduction/Objective. Chronic obstructive pulmonary disease (COPD) is a primary lung disease. Today, pulmonary rehabilitation (PR) is the basis for non-pharmacological treatment of these patients, with numerous confirmed effects on the most significant symptoms of the disease and the quality of life (QoL). The aim of this study was to determine the relationship between certain risk factors and the outcome of PR, as well as to determine the percentage of respondents who had a positive outcome of PR. Methods. The study included 500 patients with COPD, determined according to the Global Initiative for Chronic Obstructive Lung Disease guidelines, all stages (I–IV), in the stable phase of the disease, who completed the outpatient PR program. Disease stage, comorbidities, forced expiratory volume in the first second, six-minute walk test (6MWT), COPD Assessment Test (CAT), and Medical Research Council dyspnea scale, body mass index, airflow obstruction, dyspnea and exercise capacity (BODE) index, were measured before and after the program. The last four parameters have been observed as risk factors that affect the outcome of PR, but also as parameters by which we monitor the outcome of PR. Results. A successful outcome of PR was achieved by as many as 452 (90.4%) patients. The following were determined as independent predictors of a positive outcome of PR: lower number of comorbidities, absence of heart failure, higher BMI, and CAT ≥ 10. Conclusions. PR in our group of patients leads to statistically significant improvements in most of the examined subjective and objective parameters, in patients in all stages of the disease.

Introduction. Over the last few months the coronavirus disease 2019 (COVID-19) pandemic has created overwhelming challenges for physicians around the world. While much has been described in the literature about lung infiltrates and respiratory failure associated with infection of coronavirus 2 (SARSCoV- 2), pneumothorax is reported as a rare (a rate of 1%) but a life-threatening complication of COVID-19 pneumonia. Late bilateral spontaneous pneumothorax has been described in few cases. The aim of the report is to consider pneumothorax as a possible complication of COVID-19 pneumonia, which is also one of the causes of respiratory deterioration and potentially fatal outcome in these patients. Case outline. This article describes the clinical course of the patient who tested positive for SARS-CoV-2 on reverse-transcriptase polymerase chain reaction (RT-PCR) testing of nasopharyngeal and oropharyngeal swab specimens and who presented with COVID-19 pneumonia complicated by bilateral, spontaneous pneumothorax, pneumomediastinum and subcutaneous emphysema. He had no underlying lung disease nor risk factors for pneumothorax, except administered non-invasive ventilation/continuous positive airway pressure during first hospitalization. The patient was successfully treated with surgical (chest drainage, thoracoscopy and pleural abrasion) and non-surgical methods (by application of drugs and other supportive therapies). Conclusion. This review demonstrates that the possibility of a late pneumothorax should be kept in mind in patients with, or recovering from, COVID-19 disease with progressive dyspnea. The timely diagnosis and management of pneumothorax will reduce COVID-19 associated mortality.

Background/Aim. The influenza virus is often the cause of exacerbations among chronic obstructive pulmonary disease (COPD) patients, especially during the winter season. However, vaccination rates are still below recommended even in developed countries. The aim of the study was to determine the rates and examine the effectiveness of immunization against seasonal influenza in preventing exacerbations among COPD patients in Serbia. Methods. The prospective cohort study of stable COPD outpatients was conducted over three years (between October 1, 2014, and September 30, 2017) at the Polyclinic Department of Institute for Pulmonary Diseases of Vojvodina, Sremska Kamenica, Serbia. The rates and effects of seasonal flu vaccination on COPD exacerbation rates were evaluated using univariate and multivariate logistic regression analysis, taking into account comorbidity, age, and body mass index (BMI). Results. The study included 840 patients. The flu vaccination rate was 37.1%. Exacerbations occurred more frequently in unvaccinated patients [176 (31.9%) vs. 375 (68.1%), p = 0.043]. In elderly vaccinated patients (≥ 65 years) there were fewer exacerbations compared to unvaccinated patients [89 (56.0%) vs. 188 (69.4%), p = 0.005]. Lower frequency of exacerbations was also observed in vaccinated patients with comorbidities [165 (61.1%) vs. 327 (69.4%), p = 0.021] and low BMI [27 (64.3%) vs. 78 (83.9%), p = 0.011]. Multivariate logistic regression analysis identified BMI < 21 kg/m2 [relative risk (RR): 0.490; 95% confidence interval (CI): 0.318–0.758; p = 0.001] and heart failure (RR: 2.734; 95% CI: 1.121–6.669; p = 0.027) as independent predictors of COPD exacerbations. Conclusion. Immunization for seasonal influenza in Serbia is below recommended rates. Flu vaccination was associated with a significant reduction in COPD exacerbation rates, particularly in elderly patients and patients with heart failure and low BMI.

Introduction/Objective. The chronic obstructive pulmonary disease (COPD) exacerbations have a major impact on outcomes of COPD patients. Pulmonary rehabilitation (PR) interrupts the vicious circle caused by exacerbations. It has not been widely implemented as standard of COPD treatment yet. The aim of study was to examine the effectiveness of PR in prevention of exacerbations. Method. The prospective observation study included stable COPD patients between January 2015 and December 2018. The effects of PR on exacerbation rates were evaluated using univariate and multivariate logistic regression analysis, taking into account age, comorbidity, vaccination status (against seasonal flu), body mass index (BMI). Results. Study included 1,674 patients (956 males, age 65.93 Ѓ} 8.45, current or ex-smokers 94.9%; 21 ≥ BMI 1,406 patients, 84%, FEV1 < 80% 1,448 patients, 86.5%). The PR rate was 48.1%. There was significant difference in PR status with respect to age (p = 0.020), comorbidities (p = 0.015), FEV1 (p < 0.001), respiratory symptoms using COPD assessment test (CAT) score (p < 0.001), vaccination against seasonal flu (p < 0.001). Exacerbations occurred more frequently in non-PR patients (415 (51.6%) vs. 641 (73.7%), p < 0.001). In multivariate analysis, PR (RR 0.421; 95% CI (0.307–0.577); p < 0.001) and BMI ≥ 21kg/m2 (RR 0.605; 95% CI (0.380–0.965); p = 0.035) were independent protective factors and CAT score >10 (RR 2.375; 95% CI (1.720–3.280); p < 0.001) and FEV1 < 80% (RR 2.021; 95% CI (1.303–3.134); p = 0.002) were independent risk factors from exacerbations. Conclusion. Patients who successfully completed PR treatment had significantly less frequent exacerbations compared to patients that not pass through PR program.

Lung abscess is a type of liquefactive necrosis of the lung tissue and formation of cavities (more than 2 cm) containing necrotic debris or fluid caused by microbial infection. It can be caused by aspiration, which may occur during altered consciousness and it usually causes a pus-filled cavity. Moreover, alcoholism is the most common condition predisposing to lung abscesses. Lung abscess is considered primary (60%) when it results from existing lung parenchymal process and is termed secondary when it complicates another process, e.g., vascular emboli or follows rupture of extrapulmonary abscess into lung. There are several imaging techniques which can identify the material inside the thorax such as computerized tomography (CT) scan of the thorax and ultrasound of the thorax. Broad spectrum antibiotic to cover mixed flora is the mainstay of treatment. Pulmonary physiotherapy and postural drainage are also important. Surgical procedures are required in selective patients for drainage or pulmonary resection. In the current review we will present all current information from diagnosis to treatment.

Pulmonary arteriovenous malformation (PAVM) is a rare clinical condition with abnormal direct communication between the branches of pulmonary artery and vein. It may occur as an isolated anomaly or in association with hereditary hemorrhagic telangiectasia (HHT). Although these vascular pulmonary pathologies are quite uncommon, they are the important part of the differential diagnosis of common pulmonary problems such as hypoxemia and pulmonary nodules. The diagnosis of PAVM in patients remains a diagnostic challenge to the emergency physician. The most common clinical signs of PAVM are recurrent episodes of epistaxis and hemoptysis, so surgical resection is deemed the best curative option to avoid further episodes and recurrence of hemoptysis. Quite often the diagnosis is established after pathohistological examinations. We report a case of a female patient with a massive recurrent hemoptysis and without pathologic radiological findings which would suggest to PAVM and who was successfully treated with lobectomy.

Background and Objective: The aim of this study is to compare usefulness of Semi-Fowler position vs. lateral decubitus position for thoracoscopic sympathectomy in treatment of primary focal hyperhidrosis., Materials and Methods: From January 2009 to January 2010, 263 consecutive patients with palmar and axillar hyperhidrosis underwent thoracoscopic sympathectomy Th2-Th4. Patients were divided into two groups: group A (n=133) underwent thoracoscopic sympathectomy through lateral decubitus using double lumen endotracheal intubation, and group B (n=130) underwent thoracoscopic sympathectomy through Semi-Fowler supine position (semi sitting with arm abducted) using single lumen endotracheal intubation without insufflation of CO2, but with short apnea period. All operations were performed through two 5 mm operating ports, videothoracoscopic camera 0° and endoscopic ultrasound activated harmonic scalpel., Results: There were 107 males and 156 females with median age 30.31±8.35 years. Two groups were comparable in gender, age, severity of sweating. All operations were successfully performed with no complications or perioperative morbidity. For group A average operation time for both sides was 31.2±3.87 min and for group B average time was 14.19±4.98 min. In group B apnea period per one lung lasts 2.86±1.15 min and during that period observed saturation was 92.65%±5.66% without significant cardiorespiratory disturbances. Pleural drains were taken off on operation table after forced manually lung reexpansion. Patients were discharged from hospital for few hours, after the operation and radiologic confirmation of complete lung reexpansion., Conclusions: Based on this data (shorter operating time, lack of incomplete lung collapse, insignificant apnea and better reexpansion of lungs) we concluded that thoracoscopic sympathectomy through Semi-Fowler supine position is highly effective and easy to perform for primary hyperhidrosis.