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Injury Oct 2021Tension pneumothorax (TPT) is a frequent life-threat following thoracic injury. Time-critical decompression of the pleural cavity improves survival. However, whilst... (Review)
Review
BACKGROUND
Tension pneumothorax (TPT) is a frequent life-threat following thoracic injury. Time-critical decompression of the pleural cavity improves survival. However, whilst paramedics utilise needle thoracostomy (NT) and/or finger thoracostomy (FT) in the prehospital setting, the superiority of one technique over the other remains unknown.
AIM
To determine and compare procedural success, complications and mortality between NT and FT for treatment of a suspected TPT when performed by paramedics.
METHODS
We searched four databases (Ovid Medline, PubMed, CINAHL and Embase) from their commencement until 25 August 2020. Studies were included if they analysed patients suffering from a suspected TPT who were treated in the prehospital setting with a NT or FT by paramedics (or local equivalent nonphysicians).
RESULTS
The search yielded 293 articles after duplicates were removed of which 19 were included for final analysis. Seventeen studies were retrospective (8 cohort; 7 case series; 2 case control) and two were prospective cohort studies. Only one study was comparative, and none were randomised controlled trials. Most studies were conducted in the USA (n=13) and the remaining in Australia (n=4), Switzerland (n=1) and Canada (n=1). Mortality ranged from 12.5% to 79% for NT and 64.7% to 92.9% for FT patients. A higher proportion of complications were reported among patients managed with NT (13.7%) compared to FT (4.8%). We extracted three common themes from the papers of what constituted as a successful pleural decompression; vital signs improvement, successful pleural cavity access and absence of TPT at hospital arrival.
CONCLUSION
Evidence surrounding prehospital pleural decompression of a TPT by paramedics is limited. Available literature suggests that both FT and NT are safe for pleural decompression, however both procedures have associated complications. Additional high-quality evidence and comparative studies investigating the outcomes of interest is necessary to determine if and which procedure is superior in the prehospital setting.
Topics: Allied Health Personnel; Decompression, Surgical; Emergency Medical Services; Humans; Pneumothorax; Prospective Studies; Retrospective Studies; Thoracostomy
PubMed: 34454722
DOI: 10.1016/j.injury.2021.08.008 -
Current Opinion in Pulmonary Medicine Jul 2016The discovery of a pleural effusion in the setting of lung cancer has diagnostic, prognostic, and therapeutic challenges, some of which are addressed in this review. (Review)
Review
PURPOSE OF REVIEW
The discovery of a pleural effusion in the setting of lung cancer has diagnostic, prognostic, and therapeutic challenges, some of which are addressed in this review.
RECENT FINDINGS
Around 20% of patients with lung cancer have minimal pleural effusions, which are not amenable to a diagnostic thoracentesis. These patients have a poorer overall survival (∼7.5 months) than those without effusions (∼12-18 months), although slightly better than those with proven malignant fluids (∼5.5 months). Tumor genotype techniques are feasible on pleural fluid specimens and clinically helpful in identifying patients who may benefit from targeted therapies. If limited pleural involvement is detected during lung cancer surgery despite the presurgical imaging studies, macroscopic complete resection of the lung tumor is still a treatment option. Cytological examination for cancer cells in pleural cavity washings at the time of thoracotomy (pleural lavage cytology) is recommended to uncover pleural dissemination. Patients with non-small cell lung cancer with visceral pleural invasion might be considered candidates for postsurgical adjuvant therapy.
SUMMARY
Some predictors of adverse survival in patients with lung cancer include the presence of a minimal pleural effusion, positive pleural lavage cytology, visceral pleural invasion on pathologic examination, and unexpected pleural involvement during surgery.
Topics: Biomarkers, Tumor; Cytological Techniques; Humans; Lung Neoplasms; Neoplasm Staging; Pleura; Pleural Cavity; Pleural Effusion, Malignant; Prognosis; Pulmonary Surgical Procedures; Therapeutic Irrigation
PubMed: 27055072
DOI: 10.1097/MCP.0000000000000264 -
Pleural macrophages translocate to the lung during infection to promote improved influenza outcomes.Proceedings of the National Academy of... Dec 2023Seasonal influenza results in 3 to 5 million cases of severe disease and 250,000 to 500,000 deaths annually. Macrophages have been implicated in both the resolution and...
Seasonal influenza results in 3 to 5 million cases of severe disease and 250,000 to 500,000 deaths annually. Macrophages have been implicated in both the resolution and progression of the disease, but the drivers of these outcomes are poorly understood. We probed mouse lung transcriptomic datasets using the Digital Cell Quantifier algorithm to predict immune cell subsets that correlated with mild or severe influenza A virus (IAV) infection outcomes. We identified a unique lung macrophage population that transcriptionally resembled small serosal cavity macrophages and whose presence correlated with mild disease. Until now, the study of serosal macrophage translocation in the context of viral infections has been neglected. Here, we show that pleural macrophages (PMs) migrate from the pleural cavity to the lung after infection with IAV. We found that the depletion of PMs increased morbidity and pulmonary inflammation. There were increased proinflammatory cytokines in the pleural cavity and an influx of neutrophils within the lung. Our results show that PMs are recruited to the lung during IAV infection and contribute to recovery from influenza. This study expands our knowledge of PM plasticity and identifies a source of lung macrophages independent of monocyte recruitment and local proliferation.
Topics: Animals; Mice; Humans; Influenza, Human; Orthomyxoviridae Infections; Lung; Macrophages; Macrophages, Alveolar; Influenza A virus
PubMed: 38100417
DOI: 10.1073/pnas.2300474120 -
Cirugia Pediatrica : Organo Oficial de... Jul 2017Persistent air leak (PAL) is a common problem. We asses our experience in the management of these patients.
INTRODUCTION
Persistent air leak (PAL) is a common problem. We asses our experience in the management of these patients.
MATERIAL AND METHODS
Retrospective review of patients with chest tubes after bronchopulmonary pneumothorax (due to lung resections, spontaneous pneumothorax, necrotizing pneumonia) from 2010 to 2015. We studied clinical data, PAL incidence, risk factors and treatment, considering PAL ≥ 5 days.
RESULTS
Thirty-seven cases (28 patients) between 0-16years: 26 lung resections, 11 pneumothorax. We found no differences in the distribution of age, weight, indication or comorbidity, but we noticed a trend to shorter hospital stay in infants. Patients with staple-line reinforcement presented lower PAL incidence than patients with no mechanical suture (43% vs 37%), the difference is even apparent when applying tissue sealants (29% vs 50%) (p > 0.05). We encountered no relationship between the size of the tube (10-24 Fr) or the type of resection, with bigger air leaks the higher suction pressure. We performed 13 pleurodesis in 7 patients (2 lobectomies, 3 segmentectomies and 2 bronchopleural fistulas), with 70% effectiveness. We conducted 7 procedures with autologous blood (1.6 ml/kg), 2 with povidone-iodine (0.5 ml/kg), 2 mechanical thoracoscopic and 2 open ones. We repeated pleurodesis four times, 3 of them after autologous blood infusion: 2 infusions with the same dose (both effective) and the other 2 as thoracotomy in patients with bronchopleural fistulas. After instillation of blood 3 patients presented with fever. After povidone-iodine instillation, the patient suffered from fever and rash.
CONCLUSIONS
Intraoperative technical aspects are essential to reduce the risk of PAL. Autologous blood pleurodesis, single or repeated, is a minimal invasive option, very safe and effective to treat the parenchymatous PAL.
Topics: Adolescent; Age Factors; Chest Tubes; Child; Child, Preschool; Female; Hospitalization; Humans; Incidence; Infant; Length of Stay; Male; Pleural Cavity; Pleurodesis; Pneumonectomy; Pneumothorax; Postoperative Complications; Povidone-Iodine; Retrospective Studies; Risk Factors; Thoracoscopy; Treatment Outcome
PubMed: 29043687
DOI: No ID Found -
Frontiers in Immunology 2023Tuberculosis (TB) is caused by () and remains a major health threat worldwide. However, a detailed understanding of the immune cells and inflammatory mediators in...
BACKGROUND
Tuberculosis (TB) is caused by () and remains a major health threat worldwide. However, a detailed understanding of the immune cells and inflammatory mediators in -infected tissues is still lacking. Tuberculous pleural effusion (TPE), which is characterized by an influx of immune cells to the pleural space, is thus a suitable platform for dissecting complex tissue responses to infection.
METHODS
We employed singe-cell RNA sequencing to 10 pleural fluid (PF) samples from 6 patients with TPE and 4 non-TPEs including 2 samples from patients with TSPE (transudative pleural effusion) and 2 samples with MPE (malignant pleural effusion).
RESULT
Compared to TSPE and MPE, TPE displayed obvious difference in the abundance of major cell types (e.g., NK, CD4+T, Macrophages), which showed notable associations with disease type. Further analyses revealed that the CD4 lymphocyte population in TPE favored a Th1 and Th17 response. Tumor necrosis factors (TNF)-, and XIAP related factor 1 (XAF1)-pathways induced T cell apoptosis in patients with TPE. Immune exhaustion in NK cells was an important feature in TPE. Myeloid cells in TPE displayed stronger functional capacity for phagocytosis, antigen presentation and IFN-γ response, than TSPE and MPE. Systemic elevation of inflammatory response genes and pro-inflammatory cytokines were mainly driven by macrophages in patients with TPE.
CONCLUSION
We provide a tissue immune landscape of PF immune cells, and revealed a distinct local immune response in TPE and non-TPE (TSPE and MPE). These findings will improve our understanding of local TB immunopathogenesis and provide potential targets for TB therapy.
Topics: Humans; Pleural Effusion; Tuberculosis; Antigen Presentation; Mycobacterium tuberculosis; Pleural Cavity
PubMed: 37435066
DOI: 10.3389/fimmu.2023.1191357 -
PloS One 2022Pleural mesothelial cells are the predominant cell type in the pleural cavity, but their role in the pathogenesis of pleural diseases needs to be further elucidated. 3D...
Pleural mesothelial cells are the predominant cell type in the pleural cavity, but their role in the pathogenesis of pleural diseases needs to be further elucidated. 3D organotypic models are an encouraging approach for an in vivo understanding of molecular disease development. The aim of the present study was to develop a 3D organotypic model of the pleural mesothelium. Specimens of human pleura parietalis were obtained from patients undergoing surgery at the University Hospital Leipzig, Germany. 3D co-culture model of pleura was established from human pleural mesothelial cells and fibroblasts. The model was compared to human pleura tissue by phase-contrast and light microscopy, immunochemistry and -fluorescence as well as solute permeation test. Histological assessment of the 3D co-culture model displayed the presence of both cell types mimicking the morphology of the human pleura. Vimentin and Cytokeratin, PHD1 showed a similar expression pattern in pleural biopsies and 3D model. Expression of Ki-67 indicates the presence of proliferating cells. Tight junctional marker ZO-1 was found localized at contact zones between mesothelial cells. Each of these markers were expressed in both the 3D co-culture model and human biopsies. Permeability of 3D organotypic co-culture model of pleura was found to be higher for 70 kDa-Dextran and no significant difference was seen in the permeability for small dextran (4 kDa). In summary, the presented 3D organoid of pleura functions as a robust assay for pleural research serving as a precise reproduction of the in vivo morphology and microenvironment.
Topics: Humans; Pleura; Coculture Techniques; Dextrans; Pleural Diseases; Pleural Cavity
PubMed: 36454800
DOI: 10.1371/journal.pone.0276978 -
Biology Mar 2022Lymphatic vessels exploit the mechanical stresses of their surroundings together with intrinsic rhythmic contractions to drain lymph from interstitial spaces and serosal... (Review)
Review
Lymphatic vessels exploit the mechanical stresses of their surroundings together with intrinsic rhythmic contractions to drain lymph from interstitial spaces and serosal cavities to eventually empty into the blood venous stream. This task is more difficult when the liquid to be drained has a very subatmospheric pressure, as it occurs in the pleural cavity. This peculiar space must maintain a very low fluid volume at negative hydraulic pressure in order to guarantee a proper mechanical coupling between the chest wall and lungs. To better understand the potential for liquid drainage, the key parameter to be considered is the difference in hydraulic pressure between the pleural space and the lymphatic lumen. In this review we collected old and new findings from in vivo direct measurements of hydraulic pressures in anaesthetized animals with the aim to better frame the complex physiology of diaphragmatic and intercostal lymphatics which drain liquid from the pleural cavity.
PubMed: 35336793
DOI: 10.3390/biology11030419 -
Respiration; International Review of... 2021The detection of foreign bodies in the pleural cavity is rare and mostly consequent to iatrogenic or traumatic events. The migration of an inhaled foreign body from the...
The detection of foreign bodies in the pleural cavity is rare and mostly consequent to iatrogenic or traumatic events. The migration of an inhaled foreign body from the airways to the pleural space through a bronchopleural fistula is an exceptional event. We report a case of a pleural empyema consequent to an inhaled wooden skewer. CT scan and bronchoscopy were unable to identify the foreign body, due to its migration in the peripheral airways. The thin and pointed foreign body perforated the visceral pleural surface emerging in the pleural cavity.
Topics: Bronchial Fistula; Empyema, Pleural; Foreign Bodies; Humans; Pleura; Pleural Diseases
PubMed: 34134111
DOI: 10.1159/000516507 -
Current Opinion in Pulmonary Medicine Jul 2016The method for identification of alveolopleural fistulae (APF) by visual inspection of air bubbles in the chest drainage system has several limitations and suffers from... (Review)
Review
PURPOSE OF REVIEW
The method for identification of alveolopleural fistulae (APF) by visual inspection of air bubbles in the chest drainage system has several limitations and suffers from poor accuracy. Here we discuss the use of a novel technique of pleural gas analysis in the identification and management of APF.
RECENT FINDINGS
We found that pleural gas analysis has higher sensitivity and specificity than visual inspection in identifying APF. Additionally, we demonstrated that intrapleural gas milieu impacts lung healing and reduction of intrapleural carbon dioxide can promote resolution of APF.
SUMMARY
Pleural gas analysis is a novel technique to identify and manage APF. Integration of gas analysis in chest drainage systems would provide a more objective method for managing chest tubes and providing a favorable pleural gas environment for lung healing.
Topics: Anastomotic Leak; Carbon Dioxide; Chest Tubes; Drainage; Humans; Oxygen; Pleural Cavity; Pneumonectomy; Pulmonary Alveoli; Respiratory Function Tests; Respiratory Tract Fistula
PubMed: 27043191
DOI: 10.1097/MCP.0000000000000282