Publications by authors named "Bedat B"

Pleural space infections occur in approximately 10% of patients hospitalized for pneumonia and their incidence is increasing with an aging population. Pulmonary ultrasound is a good bedside diagnostic tool able to reduce complications associated with thoracocentesis and drainage. The RAPID score is being increasingly validated as a predictor for mortality but has not yet been proven useful to guide the treatment strategy and needs incorporation into prospective studies.

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Lung cancer is the leading cause of cancer mortality worldwide, with a median survival rate at 5 years of less than 20%. While molecular mapping aids in selecting appropriate therapies, it cannot predict personalized treatment response and long-term efficacy. For addressing these challenges, there is a great need for functional tests.

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Background: Continuous intraoperative neuromonitoring has successfully demonstrated to predict impending damage to the recurrent laryngeal nerve, by detecting changes in electromyographic recordings. Despite the apparent benefits associated with continuous intraoperative neuromonitoring, its safety is still a debate. The aim of this study was to investigate the electrophysiological impact of continuous intraoperative neuromonitoring on the vagus nerve.

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Background: Intrapulmonary shunt is a major determinant of oxygenation in thoracic surgery under one-lung ventilation. We reviewed the effects of available treatments on shunt, Pao/FiO and haemodynamics through systematic review and network meta-analysis.

Methods: Online databases were searched for RCTs comparing pharmacological interventions and intrapulmonary shunt in thoracic surgery under one-lung ventilation up to March 30, 2022.

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Objectives: The aim of this study was to compare short-term outcomes and local control in pT1c pN0 non-small-cell lung cancer that were intentionally treated by video-assisted thoracoscopic surgery (VATS) lobectomy or segmentectomy.

Methods: Multicentre retrospective study of consecutive patients undergoing VATS lobectomy (VL) or VATS segmentectomy (VS) for pT1c pN0 non-small-cell lung cancer from January 2014 to October 2021. Patients' characteristics, postoperative outcomes and survival were compared.

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Background: Persistent pain and disability following rib fractures result in a large psycho-socio-economic impact for health-care system. Benefits of rib osteosynthesis are well documented in patients with flail chest that necessitates invasive ventilation. In patients with uncomplicated and simple rib fractures, indication for rib osteosynthesis is not clear.

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BACKGROUND Following single-lung transplantation, native lung inflation can progressively develop in patients with emphysema. CASE REPORT A 74-year-old female patient presented with worsening dyspnea during daily activities. She underwent a right single-lung transplantation for emphysema 27 years ago.

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Objectives: We assessed the accuracy of 3 validated lobectomy scoring systems to predict prolonged air leak (PAL) in patients undergoing video-assisted thoracoscopic surgery (VATS) segmentectomy.

Methods: We reviewed all consecutive patients who had a VATS segmentectomy between January 2016 and October 2020. We determined PALs on postoperative day 5.

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Background: Hypoparathyroidism is common after total thyroidectomy, primarily due to inadvertent disruption of the parathyroid gland blood supply during thyroid dissection. Indocyanine green helps determine the degree of vascularization and correlates with parathyroid gland vitality. It is difficult to determine how the indocyanine green score affects postoperative parathyroid hormone levels because all 4 parathyroid glands must be evaluated during surgery.

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Objectives: The aim of this study was to identify whether steeper V.E/V. CO2 slope was associated with cardiopulmonary complications (CPC) after anatomical resection by video-assisted thoracic surgery.

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Background: Bronchial reconstruction is one of the most challenging procedures for thoracic surgeons. This study aimed to report the surgical techniques and clinical outcomes of bronchoplastic and sleeve resection for central lung cancer and summarize our center's experience of this challenging procedure over the past 8 years.

Methods: Between January 2013 and April 2021, 54 patients underwent a sleeve resection or a lobectomy with bronchoplasty, including 11 patients who received video-assisted thoracoscopic surgery (VATS) bronchial sleeve resection (4 via the uniportal approach and 7 via the biportal approach).

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Background: Parapneumonic empyema (PPE) management remains debated. Here we present the outcome of a comparable population with PPE treated over a 4-year period in two Thoracic Surgery University Centers with different approaches: one with an early "surgical" and the other with a "fibrinolytic" approach.

Methods: All operable patients with PPE managed in both centers between January 2014 and January 2018 were reviewed.

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Perioperative fluid balance has a major impact on clinical and functional outcome, regardless of the type of interventions. In thoracic surgery, patients are more vulnerable to intravenous fluid overload and to develop acute respiratory distress syndrome and other complications. New insight has been gained on the mechanisms causing pulmonary complications and the role of the endothelial glycocalix layer to control fluid transfer from the intravascular to the interstitial spaces and to promote tissue blood flow.

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The "moderate-to-high-risk" surgical patient is typically older, frail, malnourished, suffering from multiple comorbidities and presenting with unhealthy life style such as smoking, hazardous drinking and sedentarity. Poor aerobic fitness, sarcopenia and "toxic" behaviors are modifiable risk factors for major postoperative complications. The physiological challenge of lung cancer surgery has been likened to running a marathon.

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Objectives: In over 30% of all thyroid surgeries, complications arise from transient and definitive hypoparathyroidism, underscoring the need for real-time identification and preservation of parathyroid glands (PGs). Here, we evaluate the promising intraoperative optical technologies available for the identification, preservation, and functional assessment of PGs to enhance endocrine surgery.

Methods: We performed a review of the literature to identify published studies on fluorescence imaging in thyroid and parathyroid surgery.

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Background: Lung transplantation (LTx) is associated with sterile inflammation, possibly related to the release of damage associated molecular patterns (DAMPs) by injured allograft cells. We have measured cellular damage and the release of DAMPs and cytokines in an experimental model of LTx after cold or warm ischemia and examined the effect of pretreatment with ex-vivo lung perfusion (EVLP).

Methods: Rat lungs were exposed to cold ischemia alone (CI group) or with 3h EVLP (CI-E group), warm ischemia alone (WI group) or with 3 hour EVLP (WI-E group), followed by LTx (2 hour).

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Background: Primary hyperparathyroidism (pHPT) is a common endocrine pathology, and it is due to a single parathyroid adenoma in 80-85 per cent of patients. Near-infrared autofluorescence (NIRAF) has recently been used in endocrine surgery to help in the identification of parathyroid tissue, although there is currently no consensus on whether this technique can differentiate between normal and abnormal parathyroid glands. The aim of this study was to describe the autofluorescence pattern of parathyroid adenoma in pHPT.

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The success of pancreas islet isolation largely depends on donor characteristics, including extracellular matrix composition of which collagen is the main element. We hypothesized that isolation yields are proportional to collagen digestion percentage, and aimed to determine a threshold that predicts isolation success. The amount of pancreas collagen (I-V) was determined using colorimetry prior to and after the digestion process in 52 human islet isolations.

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Fluorescence imaging is a well-known method for both the in vivo and in vitro identification of specific cells or tissues. This imaging tool is gaining importance in the intraoperative detection and preservation of parathyroid glands during endocrine surgery owing to the intrinsic properties of parathyroid tissue. The aim of this paper is to provide an overview of the basics of the technology, its history, and the recent surgical intraoperative applications of near-infrared imaging methods.

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Background: The management of the intersegmental plane (ISP) is challenging during uniport video-assisted thoracoscopic (VATS) pulmonary segmentectomy. Staplers and electrocautery have been used extensively in ISP management. However, both of them have their respective drawbacks.

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Background: Pulmonary segmentectomies are generally classified into simple (tri-segmentectomy or lingulectomy as well as apical or basilar segmentectomy) and complex (individual or bi-segmentectomy of the upper, middle and lower lobes). Complex segmentectomies are technically feasible by video-assisted thoracic surgery (VATS) but remain challenging, and reports on post-operative outcomes are scarce. This study analyzes the differences between simple and complex VATS segmentectomy in terms of peri- and post-operative outcomes.

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Background: Compared to lobectomy by video-assisted thoracic surgery (VATS), segmentectomy by VATS has a potential higher risk of postoperative atelectasis and air leakage. We compared postoperative complications between these two procedures, and analyzed their risk factors.

Methods: We reviewed the records of all patients who underwent anatomical pulmonary resections by VATS from January 2014 to March 2018 in two Swiss university hospitals.

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