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Spontaneous pneumothorax (SP) is defined as the presence of free air inside the pleural space. Many studies have reported that meteorological variables may trigger SP, but the mechanism is unknown. The aim of this study was to compare the effects of meteorological variables on the development of SP in two regions with different altitudes. The study was conducted in the Çanakkale (2 m above sea level) and the Erzurum region (1758 m). A total of 494 patients with SP who presented to the hospitals of the two regions between January 2011 and December 2016 were included in the study. The meteorological variables used included ambient temperature, atmospheric pressure, relative humidity, precipitation amount, wind speed, and wind direction (as north and south). The total 2192 days were divided into two as days with and without an SP case presentation. A 4-day period prior to the day a case presented was compared with the other days without any cases to investigate the presence of any lagged effect. Statistical significance was accepted at p < 0.05. Comparison of these two regions showed a significant difference between them. The meteorological variables of the regions that affect SP development were found to be low mean minimum temperature, high daily temperature change, low precipitation, low wind speed and north winds for Erzurum, and only rainy days for Çanakkale. The results have demonstrated that cold weather, sudden temperature changes, north winds, and low wind speed are risk factors for the development of SP at high altitudes.

Background: Coronavirus disease 2019 (COVID-19) is a newly emerging infectious disease that was first reported in China and has become a worldwide pandemic. Many surgical procedures are continuing to be performed during this state of pandemic as is thoracic surgery. We present six cases of tube thoracostomy in COVID-19 patients and the modifications to the routine surgical technique., Methods: We serially attached two closed underwater drainage systems (CUDS) together and added a high-efficiency particulate air (HEPA) filter to the port of the second CUDS, because the intrapleural air, which passes through the CUDS into the air in intensive care unit (ICU), may contain high concentrations of 2019 novel coronavirus (2019-nCoV). Second, we attached the chest drain to the first CUDS in order to prevent the spread of virus during the placement of drain into the pleural cavity. Third, just before opening the parietal pleura, ventilation was put on standby mode and the endotracheal tube was clamped to prevent viral dissemination to the environment. Fourth, we covered the incision with a gauze sponge soaked with sterile saline solution during pleural entry, to prevent viral dissemination into the environment., Results: There were a total of six patients enrolled in our study. All these patients were diagnosed with COVID-19. The surgical indication for the chest tube thoracostomy was tension pneumothorax in all six patents. All patients had lung expansion defects and subcutaneous emphysema after intervention. Unfortunately, all of them succumbed to COVID-19, despite best available treatment. There was no COVID-19 infection reported in the healthcare professionals during this study., Conclusions: Thoracic surgical procedures may cause dissemination of high amounts of 2019-nCoV in the environment and thus are perhaps the most dangerous surgeries to perform. Variations in the thoracic surgical techniques are necessary in order to protect the healthcare providers from COVID-19., Competing Interests: Conflict of interestThe authors declare that they have no conflict of interest., (© Indian Association of Cardiovascular-Thoracic Surgeons 2020.)

Background: This prospective study aims to investigate the effect of chest physiotherapy and analgesic therapy on the possible complications of isolated rib fractures attributable to blunt thoracic trauma, such as hemothorax and pneumothorax., Methods: Patients who presented to Çanakkale Onsekiz Mart University School of Medicine Hospital's Emergency Department and Thoracic Surgery outpatient clinics within the first 24 hours of the post-traumatic period and did not have additional intrathoracic complications at presentation with blunt thoracic trauma and who were diagnosed with isolated rib fractures were enrolled in this prospective research study. The groups were designated as the patients who would receive analgesic treatment only (Group A) and the patients who would receive chest physiotherapy and analgesic treatment together (Group B). Patients who had first and second rib fractures or three or more rib fractures and who did not have additional organ injury were hospitalized in the Thoracic Surgery clinics; patients who had other organ trauma were hospitalized in related clinics. Patients were reassessed on their seventh and 30th post-traumatic days with physical examination and radiologic studies., Results: The mean age of the 114 patients were 56.3±16.4 (22-87). There were 37 (32.5%) women and 77 (67.5%) men. Each group included 57 patients. The most common form of trauma was the same-level falls (31.6%). The mean number of rib fractures of all participants was 2.6±0.7 (1-10); the median number was 1.5. Fifty-two (45.6%) patients were hospitalized. The mean length of stay was 4.0±1.1 days. At the end of their treatment and follow-up periods, pleural effusion was found in 28 patients (24.6%) out of 114 enrolled at the side of trauma. Group B had a higher number of patients with pleural effusion (43.9%) than group A (5.3%). We performed tube thoracostomy in four patients, all of which were in group B (p<0.05)., Conclusion: As a result of this study, chest physiotherapy maneuvers have increased the incidence of late hemothorax in patients with three or more isolated rib fractures. Also, minimal hemothoraces (<300 ml) may spontaneously regress, and no additional surgical treatment are required if the proper follow-up procedures are performed. It is advisable to hospitalize the blunt thoracic trauma patients who have three or more rib fractures and who are planned to undergo chest physiotherapy and or are prone to develop additional complications because of possible risks.

Löfgren's syndrome is an acute clinical form of sarcoidosis that is first described by Sven Löfgren as bilateral hilar lymphadenopathy together with Erythema Nodosum (EN) and accompanying arthritis/arthralgia. This syndrome has some differences in terms of treatment, prognosis and recurrence compared to sarcoidosis. In this report, we describe a 70 years old lady who admitted with multiple erythematous lesions and arthralgia of both lower extremities and she was diagnosed as Löfgren's syndrome via mediastinoscopy.

Transient splanchnic vasoconstriction following major burns causes oxidative and/or nitrosative damage in gastrointestinal tissues due to ischemia, which is followed by reperfusion injury. Oxytocin (OT), a hypothalamic nonapeptide, possesses antisecretory and antiulcer effects, facilitates wound healing and is involved in immune and inflammatory processes. To assess the possible protective effect of oxytocin (OT) against burn-induced gastric injury, Sprague-Dawley rats (250-300g) were randomly divided into three groups as control (n=8), OT-treated burn (n=8) and saline-treated burn (n=8) groups. Under anesthesia, the shaved dorsal skin of rats was exposed to 90 degrees C water for 10s to induce burn injury covering 30% of total body surface area in a standardized manner. Either oxytocin (5microg/kg) or saline was administered subcutaneously immediately after and at 24h following burn, and the rats were decapitated at 48h. Serum samples were assayed for TNF-alpha, and stomach was taken for the determination of malondialdehyde (MDA), myeloperoxidase (MPO) activity, DNA fragmentation rate (%) and histopathological examination. MDA and MPO were assayed for products of lipid peroxidation and as an index of tissue neutrophil infiltration, respectively. When compared to control group, burn caused significant increases in gastric MDA and MPO activity and increased microscopic damage scores at 48h (p<0.001). Oxytocin treatment reversed the burn-induced elevations in MDA and MPO levels and reduced the gastric damage scores (p<0.001, p<0.01), while TNF-alpha levels, which were increased significantly at 48thh after injury (p<0.001), were abolished with OT treatment (p<0.001). The results of this study suggest that oxytocin may provide a therapeutic benefit in diminishing burn-induced gastric inflammation by depressing tissue neutrophil infiltration and decreasing the release of inflammatory cytokines, but requires further investigation as a potential therapeutic agent in ameliorating the systemic effects of severe burn.