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https://www.readbyqxmd.com/read/28095954/predicting-air-quality-at-first-ingress-into-vehicles-visiting-the-international-space-station
#1
Amelia A Romoser, Robert R Scully, Thomas F Limero, Vanessa De Vera, Patti F Cheng, Jennifer J Hand, John T James, Valerie E Ryder
INTRODUCTION: NASA regularly performs ground-based offgas tests (OGTs), which allow prediction of accumulated volatile pollutant concentrations at first entry on orbit, on whole modules and vehicles scheduled to connect to the International Space Station (ISS). These data guide crew safety operations and allow for estimation of ISS air revitalization systems impact from additional pollutant load. Since volatiles released from vehicle, module, and payload materials can affect crew health and performance, prediction of first ingress air quality is important...
February 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28089646/a-risk-score-to-predict-the-incidence-of-prolonged-air-leak-after-video-assisted-thoracoscopic-lobectomy-an-analysis-from-the-european-society-of-thoracic-surgeons-database
#2
Cecilia Pompili, Pierre Emmanuel Falcoz, Michele Salati, Zalan Szanto, Alessandro Brunelli
OBJECTIVE: The study objective was to develop an aggregate risk score for predicting the occurrence of prolonged air leak after video-assisted thoracoscopic lobectomy from patients registered in the European Society of Thoracic Surgeons database. METHODS: A total of 5069 patients who underwent video-assisted thoracoscopic lobectomy (July 2007 to August 2015) were analyzed. Exclusion criteria included sublobar resections or pneumonectomies, lung resection associated with chest wall or diaphragm resections, sleeve resections, and need for postoperative assisted mechanical ventilation...
December 22, 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28043780/influence-of-mouth-opening-on-oropharyngeal-humidification-and-temperature-in-a-bench-model-of-neonatal-continuous-positive-airway-pressure
#3
Hendrik S Fischer, Tim L Ullrich, Christoph Bührer, Christoph Czernik, Gerd Schmalisch
Clinical studies show that non-invasive respiratory support by continuous positive airway pressure (CPAP) affects gas conditioning in the upper airways, especially in the presence of mouth leaks. Using a new bench model of neonatal CPAP, we investigated the influence of mouth opening on oropharyngeal temperature and humidity. The model features the insertion of a heated humidifier between an active model lung and an oropharyngeal head model to simulate the recurrent expiration of heated, humidified air. During unsupported breathing, physiological temperature and humidity were attained inside the model oropharynx, and mouth opening had no significant effect on oropharyngeal temperature and humidity...
December 30, 2016: Medical Engineering & Physics
https://www.readbyqxmd.com/read/27916365/efficacy-and-safety-of-innoseal-for-air-leak-after-pulmonary-resection-a-case-control-study
#4
Francesco Petrella, Alessandro Borri, Daniela Brambilla, Giorgio Calanca, Nicola Vezzani, Antonio Colantoni, Adolfo Gasparetto, Lorenzo Spaggiari
BACKGROUND: Prolonged air leak is one of the most common complications after lung surgery and the cause of prolonged hospital stay frequently associated with major postoperative morbidity and thus responsible for even higher hospital costs. This case-control study was designed to test the sealing efficacy and safety of Enable-Innoseal TP4 in patients undergoing pulmonary resection for lung cancer. METHODS: This was a case-control trial enrolling patients with primary or single site metastatic lung cancer scheduled for elective anatomic or nonanatomic pulmonary resection presenting intraoperative grade 1 or 2 air leak at water submersion test; the study group population was then matched 1:1 according to surgical procedure, male/female ratio, preoperative FEV1, and age...
November 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27904839/noncardiac-thoracic-surgery-in-abidjan-from-1977-to-2015
#5
Yves Tanauh, Flavien Kendja, Hervé Yangni-Angate, Blaise Demine, Raphaël Ouédé, Maurice Kouacou
BACKGROUND: To report and analyze noncardiac thoracic operations performed at the Cardiology Institute of Abidjan (Institut de Cardiologie d'Abidjan) from 1977 to 2015. METHODS: This is a retrospective and descriptive study covering 39 years, from 1977 to 2015. This study period was divided into three periods of 13 years each: P1 from 1977 to 1989, P2 from 1990 to 2002 and P3 from 2003 to 2015. Medical records of 2014 operated patients were analyzed: 414 patients for P1, 464 patients for P2, 1,136 patients for P3...
October 2016: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/27879380/performance-of-leak-compensation-in-all-age-icu-ventilators-during-volume-targeted-neonatal-ventilation-a-lung-model-study
#6
Taiga Itagaki, Desmond J Bennett, Christopher T Chenelle, Daniel F Fisher, Robert M Kacmarek
BACKGROUND: Volume-targeted ventilation is increasingly used in low birthweight infants because of the potential for reducing volutrauma and avoiding hypocapnea. However, it is not known what level of air leak is acceptable during neonatal volume-targeted ventilation when leak compensation is activated concurrently. METHODS: Four ICU ventilators (Servo-i, PB980, V500, and Avea) were compared in available invasive volume-targeted ventilation modes (pressure control continuous spontaneous ventilation [PC-CSV] and pressure control continuous mandatory ventilation [PC-CMV])...
January 2017: Respiratory Care
https://www.readbyqxmd.com/read/27853329/high-flow-nasal-cannulae-versus-nasal-continuous-positive-airway-pressure-in-neonates-with-respiratory-distress-syndrome-managed-with-insure-method-a-randomized-clinical-trial
#7
Maliheh Kadivar, Ziba Mosayebi, Nosrat Razi, Shahin Nariman, Razieh Sangsari
BACKGROUND: In recent years, various noninvasive respiratory support (NRS) of ventilation has been provided more in neonates. The aim of this study was to compare the effect of HFNC with NCPAP in post-extubation of preterm infants with RDS after INSURE method (intubation, surfactant, extubation). METHODS: A total of 54 preterm infants with RDS (respiratory distress syndrome) were enrolled in this study. Using a randomized sequence, they were assigned into two groups after INSURE method...
November 2016: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/27806807/intraoperative-dilatation-and-air-tight-testing-of-the-hepaticojejunostomy-a-new-technique
#8
Hamad Hadi Al-Qahtani
OBJECTIVE: To evaluate the effect of creating an air-tight anastomosis and intraoperative dilatation of the hepaticojejunostomy (HJ) in reducing the early and long-term complications. STUDY DESIGN: Interventional study. PLACE AND DURATION OF STUDY: Department of Surgery, King Saud University, Riyadh, between March 2008 and January 2016. METHODOLOGY: After completion of HJ, the anastomosis was tested for air-tightness, and dilated with Kelly clamp in all patients undergoing the procedure...
October 2016: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/27789800/air-water-binary-gas-integrity-test-for-sterilizing-and-virus-filters
#9
Sal Giglia, John Caulmare, David Nhiem, David Porreca
: Reliability of retention performance is of paramount importance for membrane filters designed for sterile and virus filtration. To achieve dependable retention, an integrity test can be applied to ensure the absence of oversize pores or defects that can compromise the retention capability of the filter. Probably the most commonly applied nondestructive integrity test for membrane filters is the gas-liquid diffusion test, with air and water often used as the gas-liquid pair. However, the sensitivity of the air-water diffusion test is limited by the fact that the diffusive flow rate for an integral membrane can span a range that is large compared to the flow contributed by a defect...
November 2016: PDA Journal of Pharmaceutical Science and Technology
https://www.readbyqxmd.com/read/27769306/improved-application-technique-of-albumin-glutaraldehyde-glue-for-repair-of-superficial-lung-defects
#10
Maximilian Bures, Patrick Zardo, Florian Länger, Ruoyu Zhang
BACKGROUND: Albumin-glutaraldehyde glue has gained widespread acceptance for treatment of alveolar air leaks (AAL) in thoracic surgery. As liquid run-off during application is detrimental to its sealing efficacy, we developed a modified technique and assessed it in vitro. METHODS: Caudal lobes of freshly excised swine lungs (n = 20) were intubated and ventilated. A standardized focal superficial parenchymal defect (40 × 25 mm) was created on the inflated lung...
October 21, 2016: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/27766238/performance-of-on-site-medical-waste-disinfection-equipment-in-hospitals-of-tabriz-iran
#11
Hassan Taghipour, Mina Alizadeh, Reza Dehghanzadeh, Mohammad Reza Farshchian, Mohammad Ganbari, Mohammad Shakerkhatibi
Background: The number of studies available on the performance of on-site medical waste treatment facilities is rare, to date. The aim of this study was to evaluate the performance of onsite medical waste treatment equipment in hospitals of Tabriz, Iran. Methods: A various range of the on-site medical waste disinfection equipment (autoclave, chemical disinfection, hydroclave, and dry thermal treatment) was considered to select 10 out of 22 hospitals in Tabriz to be included in the survey. The apparatus were monitored mechanically, chemically, and biologically for a six months period in all of the selected hospitals...
2016: Health Promotion Perspectives
https://www.readbyqxmd.com/read/27717541/the-efficacy-of-a-novel-saline-bipolar-radiofrequency-energy-instrument-for-arresting-ongoing-solid-and-non-solid-organ-hemorrhage-in-a-swine-model
#12
Chad G Ball, Andre Campbell, Sean C Grondin, Elijah Dixon
INTRODUCTION: Ongoing hemorrhage is often life threatening and can be challenging to stop in critically injured patients. Traditional techniques for addressing this issue include high voltage cautery (Bovie), topical hemostatic application, and the delivery of ignited argon gas. The goal of this study was to evaluate the efficacy of a novel energy device for arresting ongoing bleeding from both solid and non-solid organs within a swine model. METHODS: A novel instrument utilizing bipolar radiofrequency (RF) energy which acts to ignite/boil dripping saline from a small hand piece was employed to arrest ongoing hemorrhage from an escalating series of injuries in large male swine...
December 2016: Injury
https://www.readbyqxmd.com/read/27714007/multiple-actuation-microvalves-in-wax-microfluidics
#13
María Díaz-González, César Fernández-Sánchez, Antonio Baldi
Microvalves are an essential component of microfluidic devices. In this work, a low-consumption (<35 mJ), fast-response (<0.3 s), small footprint (<0.5 mm(2)) wax microvalve capable of multiple actuation is described. This phase-change microvalve is electrically controlled, simple to operate and can be easily fabricated as a fully integrated element of wax microfluidic devices through a special decal-transfer microlithographic process. The valve is inherently latched and leak-proof to at least 100 kPa...
October 5, 2016: Lab on a Chip
https://www.readbyqxmd.com/read/27651525/effects-of-leak-compensation-on-patient-ventilator-synchrony-during-premature-neonatal-invasive-and-noninvasive-ventilation-a-lung-model-study
#14
Taiga Itagaki, Christopher T Chenelle, Desmond J Bennett, Daniel F Fisher, Robert M Kacmarek
BACKGROUND: During both nasal noninvasive ventilation (NIV) and invasive ventilation of neonates, the presence of air leaks causes triggering and cycling asynchrony. METHODS: Five ICU ventilators (PB840, PB980, Servo-i, V500, and Avea) were compared in available invasive ventilation and NIV ventilator modes (pressure control continuous spontaneous ventilation [PC-CSV] and pressure control continuous mandatory ventilation [PC-CMV]). The V500 and Avea do not provide PC-CSV and PC-CMV in NIV...
January 2017: Respiratory Care
https://www.readbyqxmd.com/read/27621570/integrated-approach-to-colorectal-anastomotic-leakage-communication-infection-and-healing-disturbances
#15
REVIEW
Cloë L Sparreboom, Zhou-Qiao Wu, Jia-Fu Ji, Johan F Lange
Colorectal anastomotic leakage (CAL) remains a major complication after colorectal surgery. Despite all efforts during the last decades, the incidence of CAL has not decreased. In this review, we summarize the available strategies regarding prevention, prediction and intervention of CAL and categorize them into three categories: communication, infection and healing disturbances. These three major factors actively interact during the onset of CAL. We aim to provide an integrated approach to CAL based on its etiology...
August 28, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27607477/structural-integrity-of-a-simple-method-to-repair-disrupted-tracheal-tube-pilot-balloon-assemblies
#16
Amir C Dayan, Richard H Epstein
BACKGROUND: An intact pilot balloon assembly is crucial to the proper function of a cuffed tracheal tube. Disruption of the pilot balloon, transection of the inflation line, or valve incompetence results in cuff deflation, which may lead to inadequate ventilation and aspiration of secretions. Such failures typically result in tracheal tube replacement, but this may be a safety risk if a difficult reintubation is anticipated. We recently encountered such a patient who remained intubated postoperatively and in whom the inflation line was transected, causing a large leak...
November 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27581993/synchronized-mechanical-ventilation-for-respiratory-support-in-newborn-infants
#17
REVIEW
Anne Greenough, Thomas E Rossor, Adesh Sundaresan, Vadivelam Murthy, Anthony D Milner
BACKGROUND: During synchronised mechanical ventilation, positive airway pressure and spontaneous inspiration coincide. If synchronous ventilation is provoked, adequate gas exchange should be achieved at lower peak airway pressures, potentially reducing baro/volutrauma, air leak and bronchopulmonary dysplasia. Synchronous ventilation can potentially be achieved by manipulation of rate and inspiratory time during conventional ventilation and employment of patient-triggered ventilation. OBJECTIVES: To compare the efficacy of:(i) synchronised mechanical ventilation, delivered as high-frequency positive pressure ventilation (HFPPV) or patient-triggered ventilation (assist control ventilation (ACV) and synchronous intermittent mandatory ventilation (SIMV)), with conventional ventilation or high-frequency oscillation (HFO);(ii) different types of triggered ventilation (ACV, SIMV, pressure-regulated volume control ventilation (PRVCV), SIMV with pressure support (PS) and pressure support ventilation (PSV))...
September 1, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27539719/synchronized-mechanical-ventilation-for-respiratory-support-in-newborn-infants
#18
REVIEW
Anne Greenough, Vadivelam Murthy, Anthony D Milner, Thomas E Rossor, Adesh Sundaresan
BACKGROUND: During synchronised mechanical ventilation, positive airway pressure and spontaneous inspiration coincide. If synchronous ventilation is provoked, adequate gas exchange should be achieved at lower peak airway pressures, potentially reducing baro/volutrauma, air leak and bronchopulmonary dysplasia. Synchronous ventilation can potentially be achieved by manipulation of rate and inspiratory time during conventional ventilation and employment of patient-triggered ventilation. OBJECTIVES: To compare the efficacy of:(i) synchronised mechanical ventilation, delivered as high-frequency positive pressure ventilation (HFPPV) or patient-triggered ventilation (assist control ventilation (ACV) and synchronous intermittent mandatory ventilation (SIMV)), with conventional ventilation or high-frequency oscillation (HFO);(ii) different types of triggered ventilation (ACV, SIMV, pressure-regulated volume control ventilation (PRVCV), SIMV with pressure support (PS) and pressure support ventilation (PSV))...
August 19, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27530418/continuous-high-frequency-oscillation-therapy-in-invasively-ventilated-pediatric-subjects-in-the-critical-care-setting
#19
Stephen Morgan, Christoph P Hornik, Niyati Patel, Walter L Williford, David A Turner, Ira M Cheifetz
BACKGROUND: Continuous high-frequency oscillation (CHFO) creates a pressure gradient in the small airways that accelerates expiratory flow. The intended use of CHFO therapy is to facilitate secretion removal and treat atelectasis. Our objective was to assess the feasibility, safety, and efficacy of CHFO in the mechanically ventilated pediatric population. METHODS: After institutional review board approval, we retrospectively reviewed medical records of mechanically ventilated children treated with CHFO (the MetaNeb system) at our institution from July 1, 2007 through August 31, 2012...
August 16, 2016: Respiratory Care
https://www.readbyqxmd.com/read/27510705/thoracoscopic-pulmonary-wedge-resection-without-post-operative-chest-drain-an-observational-study
#20
Bo Laksáfoss Holbek, Henrik Jessen Hansen, Henrik Kehlet, René Horsleben Petersen
OBJECTIVE: Chest drains are used routinely after wedge resection by video-assisted thoracoscopic surgery (VATS), although this practice is based largely on tradition rather than evidence. Chest drains may furthermore cause pain, infections, and prolonged length of stay. The aim of this prospective observational study was to assess the feasibility of avoiding chest drains following VATS wedge resection for pulmonary nodules. METHODS: Between 1 February and 25 August 2015 166 consecutive patients planned for VATS wedge resection of pulmonary nodules were screened for inclusion using the following criteria: Forced expiratory volume in 1 s (FEV1) ≥60 % of expected, FEV1/forced vital capacity ≥70 %, tumour diameter ≤2 cm, distance from tumour to visceral pleura ≤3 cm, ≤2 separate wedges, no air leak on an intraoperative air leakage test and absence of severe adhesions, bullous/emphysematous disease, pleural effusion and coagulopathy...
October 2016: General Thoracic and Cardiovascular Surgery
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