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https://www.readbyqxmd.com/read/28238577/geometrical-and-dosimetrical-uncertainties-in-hypofractionated-radiotherapy-of-the-lung-a-review
#1
REVIEW
Marco Schwarz, Giovanni Mauro Cattaneo, Livia Marrazzo
The application of high precision hypofractionated regimes (a.k.a. stereotactic body radiotherapy (SBRT)) to the treatment of lung cancer is a 'success story' of radiotherapy. From the technical perspective, lung SBRT is a challenging technique as all aspects of the treatment workflow, from imaging to dose calculation to treatment delivery, should be carefully handled in order to ensure consistency between planned and delivered dose. In this review such technical aspects are presented and discussed, looking at what has been developed over the years...
February 23, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28218802/non-invasive-ventilation-for-cystic-fibrosis
#2
REVIEW
Fidelma Moran, Judy M Bradley, Amanda J Piper
BACKGROUND: Non-invasive ventilation may be a means to temporarily reverse or slow the progression of respiratory failure in cystic fibrosis by providing ventilatory support and avoiding tracheal intubation. Using non-invasive ventilation, in the appropriate situation or individuals, can improve lung mechanics through increasing airflow and gas exchange and decreasing the work of breathing. Non-invasive ventilation thus acts as an external respiratory muscle. This is an update of a previously published review...
February 20, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28207845/reproducibility-and-comparison-of-oxygen-enhanced-t1-quantification-in-copd-and-asthma-patients
#3
Simon M F Triphan, Bertram J Jobst, Angela Anjorin, Oliver Sedlaczek, Ursula Wolf, Maxim Terekhov, Christian Hoffmann, Sebastian Ley, Christoph Düber, Jürgen Biederer, Hans-Ulrich Kauczor, Peter M Jakob, Mark O Wielpütz
T1 maps have been shown to yield useful diagnostic information on lung function in patients with chronic obstructive pulmonary disease (COPD) and asthma, both for native T1 and ΔT1, the relative reduction while breathing pure oxygen. As parameter quantification is particularly interesting for longitudinal studies, the purpose of this work was both to examine the reproducibility of lung T1 mapping and to compare T1 found in COPD and asthma patients using IRSnapShotFLASH embedded in a full MRI protocol. 12 asthma and 12 COPD patients (site 1) and further 15 COPD patients (site 2) were examined on two consecutive days...
2017: PloS One
https://www.readbyqxmd.com/read/28207629/short-and-long-term-outcome-after-lung-transplantation-from-circulatory-dead-donors-a-single-center-experience
#4
David Ruttens, An Martens, Sofie Ordies, Stijn E Verleden, Arne P Neyrinck, Robin Vos, Marc Boada Collado, Bart M Vanaudenaerde, Geert M Verleden, Dirk Van Raemdonck
BACKGROUND: Donation after cardiac death (DCD) to overcome the donor organ shortage is well accepted in the clinical setting, although long-term outcome after DCD lung transplantation (LTx) remains largely unknown. METHODS: In this retrospective study, DCD LTx recipients (n=59) were compared with a cohort of donation after brain-death (DBD) LTx recipients (n=331) transplanted between February 2007 and September 2013; follow-up was until January 1st 2016. Short-term (duration of mechanical ventilation, ICU stay, hospital stay and highest PGD score within 72 hours) and long-term (CLAD-free and overall survival) follow-up were compared over a median follow-up of 50...
February 15, 2017: Transplantation
https://www.readbyqxmd.com/read/28206676/thoracic-ct-mri-co-registration-for-regional-pulmonary-structure-function-measurements-of-obstructive-lung-disease
#5
Fumin Guo, Sarah Svenningsen, Miranda Kirby, Dante P I Capaldi, Khadija Sheikh, Aaron Fenster, Grace Parraga
PURPOSE: Recent pulmonary imaging research has revealed that in patients with chronic obstructive pulmonary disease (COPD) and asthma, structural and functional abnormalities are spatially heterogeneous. This novel information may help optimize treatment in individual patients, monitor interventional efficacy and develop new treatments. Moreover, by automating the measurement of regional biomarkers for the 19 different anatomical lung segments, there is an opportunity to embed imaging biomarkers into clinically-acceptable clinical workflows and improve lung disease clinical care...
February 16, 2017: Medical Physics
https://www.readbyqxmd.com/read/28203413/better-perioperative-outcomes-in-thoracoscopic-esophagectomy-with-two-lung-ventilation-in-semi-prone-position
#6
Lei Cai, Yan Li, Li Sun, Xue-Wen Yang, Wen-Bin Wang, Fan Feng, Guang-Hui Xu, Man Guo, Xiao Lian, Hong-Wei Zhang
BACKGROUND: One-lung ventilation (OLV) anesthesia intubation route is often used in patients undergoing thoracoscopic-esophagectomy in semi-prone position. Recently, the two-lung ventilation (TLV) approach becomes popular. However, limited studies have compared the two ventilation approaches in parallel. Here, we report a single-center, retrospective study of comparing TLV and OLV approach in patients undergoing thoracoscopic-esophagectomy in semi-prone position. METHODS: From January 2013 to November 2014, 147 patients were enrolled into the current study and were given thoracoscopic-esophagectomy in semi-prone position either by OLV or TLV...
January 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28197219/factors-determining-altered-perfusion-after-acute-pulmonary-embolism-assessed-by-quantified-single-photon-emission-computed-tomography-perfusion-scan
#7
Marc Meysman, Hendrik Everaert, Walter Vincken
AIM OF THE STUDY: The aim of the study was to analyze the evolution of perfusion (Q)-defects in patients treated for acute pulmonary embolism (PE), correlation with baseline parameters and evaluation of recurrence risk. METHODS: This is a single-center prospective observational cohort study in symptomatic normotensive PE. Comparison of the ventilation/perfusion single-photon emission computed tomography (V/Q-SPECT) acquired at baseline with a quantified SPECT (Q-SPECT) repeated at 1 week and 6 months...
January 2017: Annals of Thoracic Medicine
https://www.readbyqxmd.com/read/28196936/influences-of-duration-of-inspiratory-effort-respiratory-mechanics-and-ventilator-type-on-asynchrony-with-pressure-support-and-proportional-assist-ventilation
#8
Renata S Vasconcelos, Raquel P Sales, Luíz H de P Melo, Liégina S Marinho, Vasco Pd Bastos, Andréa da Nc Nogueira, Juliana C Ferreira, Marcelo A Holanda
BACKGROUND: Pressure support ventilation (PSV) is often associated with patient-ventilator asynchrony. Proportional assist ventilation (PAV) offers inspiratory assistance proportional to patient effort, minimizing patient-ventilator asynchrony. The objective of this study was to evaluate the influence of respiratory mechanics and patient effort on patient-ventilator asynchrony during PSV and PAV plus (PAV+). METHODS: We used a mechanical lung simulator and studied 3 respiratory mechanics profiles (normal, obstructive, and restrictive), with variations in the duration of inspiratory effort: 0...
February 14, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28176308/fluid-restriction-for-treatment-of-preterm-infants-with-chronic-lung-disease
#9
REVIEW
Keith J Barrington, Etienne Fortin-Pellerin, Thomas Pennaforte
BACKGROUND: Fluid restriction is often recommended as part of the management of infants with early or established bronchopulmonary dysplasia (BPD). OBJECTIVES: To determine whether fluid restriction as part of the therapeutic intervention for early or established BPD improves clinical outcomes. SEARCH METHODS: We used the standard search strategy of Cochrane Neonatal to search the Cochrane Central Register of Controlled Trials (CENTRAL; 2016, Issue 1) in the Cochrane Library (searched 16 February 2016), MEDLINE via PubMed (1966 to 16 February 2016), Embase (1980 to 16 February 2016), and CINAHL (1982 to 16 February 2016)...
February 8, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28147437/analysis-of-risk-factors-in-the-development-of-bronchopleural-fistula-after-major-anatomic-lung-resection-experience-of-a-single-centre
#10
Dania Nachira, Marco Chiappetta, Leonello Fuso, Francesco Varone, Ilaria Leli, Maria T Congedo, Stefano Margaritora, Pierluigi Granone
BACKGROUND: The bronchopleural fistula (BPF) is a rare but potentially fatal complication of major thoracic surgery. The purpose of this work is to investigate the risk factors associated with the development of fistulas after lobectomy and pneumonectomy. METHODS: We retrospectively reviewed the records of 835 patients who underwent major anatomic lung resection at our centre from January 2003 to December 2013. Of these, 49 underwent pneumonectomy (P group) and 786 lobectomy (L group)...
February 1, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28146639/fifty-years-of-research-in-ards-setting-positive-end-expiratory-pressure-in-the-acute-respiratory-distress-syndrome
#11
Sarina K Sahetya, Ewan C Goligher, Roy G Brower
Positive end-expiratory pressure (PEEP) has been utilized during mechanical ventilation since the first description of the acute respiratory distress syndrome (ARDS). In the subsequent decades, many different strategies for optimally titrating PEEP have been proposed. Higher PEEP can improve arterial oxygenation, reduce tidal lung stress and strain, and promote more homogenous ventilation by preventing alveolar collapse at end expiration. However, PEEP may also cause circulatory depression and contribute to ventilator-induced lung injury through alveolar overdistention...
February 1, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28144783/development-of-the-lung
#12
REVIEW
Johannes C Schittny
To fulfill the task of gas exchange, the lung possesses a huge inner surface and a tree-like system of conducting airways ventilating the gas exchange area. During lung development, the conducting airways are formed first, followed by the formation and enlargement of the gas exchange area. The latter (alveolarization) continues until young adulthood. During organogenesis, the left and right lungs have their own anlage, an outpouching of the foregut. Each lung bud starts a repetitive process of outgrowth and branching (branching morphogenesis) that forms all of the future airways mainly during the pseudoglandular stage...
March 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28132845/use-of-hyperpolarized-helium-3-mri-to-assess-response-to-ivacaftor-treatment-in-patients-with-cystic-fibrosis
#13
Talissa A Altes, Mac Johnson, Meredith Fidler, Martyn Botfield, Nicholas J Tustison, Carlos Leiva-Salinas, Eduard E de Lange, Deborah Froh, John P Mugler
BACKGROUND: This pilot study evaluated the effect of short- and long-term ivacaftor treatment on hyperpolarized (3)He-magnetic resonance imaging (MRI)-defined ventilation defects in patients with cystic fibrosis aged ≥12years with a G551D-CFTR mutation. METHODS: Part A (single-blind) comprised 4weeks of ivacaftor treatment; Part B (open-label) comprised 48weeks of treatment. The primary outcome was change from baseline in total ventilation defect (TVD; total defect volume:total lung volume ratio)...
January 26, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/28122863/alternative-inert-gas-washout-outcomes-in-patients-with-primary-ciliary-dyskinesia
#14
Sylvia Nyilas, Anne Schlegtendal, Florian Singer, Myrofora Goutaki, Claudia E Kuehni, Carmen Casaulta, Philipp Latzin, Cordula Koerner-Rettberg
The lung clearance index (LCI) derived from a nitrogen multiple breath washout test (N2-MBW) is a promising tool to assess small airways disease in primary ciliary dyskinesia, but it is difficult to apply in routine clinical settings because of its long measuring time. In this study, we aimed to assess alternative indices derived from shorter washout protocols.49 patients with primary ciliary dyskinesia (mean age 14.7±6.6 years) and 37 controls (mean age 14.3±1.4 years) performed N2-MBW and double-tracer gas (DTG) single-breath washout tests...
January 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28109573/the-optimal-procedure-for-retransplantation-after-single-lung%C3%A2-transplantation
#15
Zachary N Kon, Gregory J Bittle, Chetan Pasrija, Pablo G Sanchez, Bartley P Griffith, Richard N Pierson
BACKGROUND: Retransplantation has emerged as a therapeutic option for patients experiencing respiratory failure after single lung transplantation. However, outcomes associated with the surgical option (ipsilateral, contralateral, or bilateral lung retransplantation) has not been well evaluated. METHODS: The Organ Procurement and Transplantation Network database (1994 to 2012) was queried for all lung transplant procedures performed after an initial single lung transplantation...
January 18, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28107411/xenon-enhanced-dual-energy-ct-imaging-in-combined-pulmonary-fibrosis-and-emphysema
#16
Keishi Sugino, Masahiro Kobayashi, Yasuhiko Nakamura, Kyoko Gocho, Fumiaki Ishida, Kazutoshi Isobe, Nobuyuki Shiraga, Sakae Homma
BACKGROUND: Little has been reported on the feasibility of xenon-enhanced dual-energy computed tomography (Xe-DECT) in the visual and quantitative analysis of combined pulmonary fibrosis and emphysema (CPFE). OBJECTIVES: We compared CPFE with idiopathic pulmonary fibrosis (IPF) and chronic obstructive pulmonary disease (COPD), as well as correlation with parameters of pulmonary function tests (PFTs). METHODS: Studied in 3 groups were 25 patients with CPFE, 25 with IPF without emphysema (IPF alone), 30 with COPD...
2017: PloS One
https://www.readbyqxmd.com/read/28099359/evaluation-of-pulmonary-function-using-single-breath-hold-dual-energy-computed-tomography-with-xenon-results-of-a-preliminary-study
#17
Hiroyuki Kyoyama, Yusuke Hirata, Satoshi Kikuchi, Kosuke Sakai, Yuriko Saito, Shintaro Mikami, Gaku Moriyama, Hisami Yanagita, Wataru Watanabe, Katharina Otani, Norinari Honda, Kazutsugu Uematsu
Xenon-enhanced dual-energy computed tomography (xenon-enhanced CT) can provide lung ventilation maps that may be useful for assessing structural and functional abnormalities of the lung. Xenon-enhanced CT has been performed using a multiple-breath-hold technique during xenon washout. We recently developed xenon-enhanced CT using a single-breath-hold technique to assess ventilation. We sought to evaluate whether xenon-enhanced CT using a single-breath-hold technique correlates with pulmonary function testing (PFT) results...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28079851/corticosteroid-and-cyclophosphamide-in-acute-exacerbation-of-idiopathic-pulmonary-fibrosis-a-single-center-experience-and-literature-review
#18
Luca Novelli, Roberto Ruggiero, Federica De Giacomi, Alice Biffi, Paola Faverio, Luca Bilucaglia, Silvia Gamberini, Grazia Messinesi, Alberto Pesci
Acute Exacerbation (AEx) is a frequent and severe complication of Idiopathic Pulmonary Fibrosis (IPF). In the absence of consensus regarding treatment, studies evaluating the efficacy of specific therapies, such as corticosteroids and immunosuppresant agents, are needed. In this case series we evaluated the outcome in terms of survival of intravenous pulse doses of high-dose corticosteroid (methylprednisolone 1000 mg per day for 3 consecutive days) followed by montlhy cyclophosphamide administration (maximum 6 doses) in a cohort of patients with AEx-IPF referred to the Respiratory Unit, San Gerardo University Hospital, Monza, Italy, from 2009 to 2013...
December 23, 2016: Sarcoidosis, Vasculitis, and Diffuse Lung Diseases: Official Journal of WASOG
https://www.readbyqxmd.com/read/28068958/effects-of-ventilator-settings-nebulizer-and-exhalation-port-position-on-albuterol-delivery-during-non-invasive-ventilation-an-in-vitro-study
#19
Yuda Sutherasan, Lorenzo Ball, Pasquale Raimondo, Valentina Caratto, Elisa Sanguineti, Federico Costantino, Maurizio Ferretti, Robert M Kacmarek, Paolo Pelosi
BACKGROUND: Few studies have investigated the factors affecting aerosol delivery during non-invasive ventilation (NIV). Our aim was to investigate, using a bench-top model, the effect of different ventilator settings and positions of the exhalation port and nebulizer on the amount of albuterol delivered to a lung simulator. METHODS: A lung model simulating spontaneous breathing was connected to a single-limb NIV ventilator, set in bi-level positive airway pressure (BIPAP) with inspiratory/expiratory pressures of 10/5, 15/10, 15/5, and 20/10 cmH2O, or continuous positive airway pressure (CPAP) of 5 and 10 cmH2O...
January 10, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28067677/the-microbiome-in-mechanically-ventilated-patients
#20
Yudong Yin, Peter Hountras, Richard G Wunderink
PURPOSE OF REVIEW: Discovery of a normal lung microbiome requires reassessment of our concepts of HAP/VAP pathogenesis and has important implications for clinical diagnosis and management. RECENT FINDINGS: Changes in the microbiome of dental plaque are associated with increased risk of HAP/VAP. A transition to a lung microbiome enriched with gut flora is found in ARDS with an increased inflammatory response in patients with this change in microbial flora. A characteristic microbiome pattern of higher amounts of bacterial DNA, lower community diversity, and greater relative abundance of a single species characterize pneumonia and occasionally identify bacteria not found in culture...
April 2017: Current Opinion in Infectious Diseases
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