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https://www.readbyqxmd.com/read/29051432/drug-vaping-from-the-dangers-of-misuse-to-new-therapeutic-devices
#1
V Varlet
Users of e-cigarettes are unwitting volunteers participating in a worldwide epidemiological study. Because of the obvious benefits of e-cigarettes compared with traditional cigarette smoking, these electronic devices have been introduced all around the world to support tobacco smoking cessation. Same potential harm reduction could be considered by cannabis vaping for marijuana smokers. However, the toxicities of liquids and aerosols remain under investigation because although the use of e-cigarettes is likely to be less harmful than traditional cigarette smoking, trace levels of contaminants have been identified...
December 16, 2016: Toxics
https://www.readbyqxmd.com/read/28985693/assessing-the-depth-of-isoflurane-anaesthesia-during-cardiopulmonary-bypass
#2
Ka Ting Ng, R Peter Alston, George Just, Chris McKenzie
INTRODUCTION: Bispectral index (BIS) and monitoring of end-tidal concentration may be associated with a reduction in the incidence of awareness during volatile-based general anaesthesia. An analogue of end-tidal concentration during cardiopulmonary bypass (CPB) is measuring exhausted isoflurane concentration from the oxygenator as an estimate to blood and, so, brain concentration. The aim of this study was to determine the relationships between oxygenator exhaust and blood concentrations of isoflurane and the BIS score during CPB when administering isoflurane into the sweep gas supply to the oxygenator...
October 1, 2017: Perfusion
https://www.readbyqxmd.com/read/28960086/maternal-e-cigarette-exposure-in-mice-alters-dna-methylation-and-lung-cytokine-expression-in-offspring
#3
Hui Chen, Gerard Li, Yik Lung Chan, David G Chapman, Suporn Sukjamnong, Tara Nguyen, Tiara Annissa, Kristine C McGrath, Pawan Sharma, Brian G Oliver
INTRODUCTION: E-cigarette usage is increasing, especially among the young, with both the general population and physicians perceiving them as a safe alternative to tobacco smoking. Worryingly, e-cigarettes are commonly used by pregnant women. As nicotine is known to adversely affect children in-utero, we hypothesised that nicotine delivered via e-cigarettes would negatively affect lung development. To test this we developed a mouse model of maternal e-vapour (nicotine and nicotine-free) exposure, and investigated the impact on the growth and lung inflammation in both offspring and mothers...
September 29, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28951116/assessment-of-learning-curves-for-180-w-greenlight-xps-photoselective-vaporisation-of-the-prostate-a-multicentre-study
#4
Claire Bastard, Kevin Zorn, Benoit Peyronnet, Pierre Alain Hueber, Benjamin Pradère, Morgan Rouprêt, Vincent Misrai
BACKGROUND: The learning curve for photoselective vaporisation of the prostate (PVP) has never been assessed accurately. OBJECTIVE: To compare 180-W GreenLight XPS PVP learning curves for three surgeons with different levels of surgical experience and different institutional backgrounds. DESIGN, SETTING, AND PARTICIPANTS: A multicentre retrospective study of the first patients treated with PVP by three operators in three different centres (n=152 in group 1, n=112 in group 2, n=101 in group 3) was conducted...
September 23, 2017: European Urology Focus
https://www.readbyqxmd.com/read/28736948/evaluating-the-efficacy-of-hydrogen-peroxide-vapour-against-foot-and-mouth-disease-virus-within-a-bsl4-biosafety-facility
#5
B M Petit, F C Almeida, T R Uchiyama, F O C Lopes, K H Tino, J Chewins
An evaluation was made of the efficacy of 35% hydrogen peroxide vapour (HPV) against foot-and-mouth disease virus (FMDV) in a biosafety facility. Biological indicators (BIs) were produced using three serotypes of FMDV, all with a titre of ≥10(6) TCID50 per ml. Fifteen BIs of each serotype were distributed across five locations, throughout a 30-m(3) airlock chamber, producing a total of 45 BIs. Thirty-five percent HPV was generated and applied using a Bioquell vaporization module located in the centre of the chamber...
October 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28718828/tobacco-harm-reduction-with-vaporised-nicotine-thrive-the-study-protocol-of-an-uncontrolled-feasibility-study-of-novel-nicotine-replacement-products-among-people-living-with-hiv-who-smoke
#6
Stephanie Bell, Judith Dean, Charles Gilks, Mark A Boyd, Lisa Fitzgerald, Allyson Mutch, Peter Baker, Graham Neilsen, Coral E Gartner
Smoking is a leading cause of morbidity and premature mortality among people living with HIV (PLHIV), who have high rates of tobacco smoking. Vaporised nicotine products (VNPs) are growing in popularity as a quit aid and harm reduction tool. However, little is known about their acceptability and use among PLHIV. Using a pragmatic, uncontrolled, mixed methods design this exploratory clinical trial aims to examine the feasibility of conducting a powered randomised clinical trial of VNPs as a smoking cessation and harm reduction intervention among vulnerable populations, such as PLHIV who smoke tobacco...
July 18, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28718774/effects-of-microchannel-confinement-on-acoustic-vaporisation-of-ultrasound-phase-change-contrast-agents
#7
Shengtao Lin, Ge Zhang, Chee Hau Leow, Meng-Xing Tang
The sub-micron phase change contrast agent (PCCA) composed of a perfluorocarbon liquid core can be activated into gaseous state and form stable echogenic microbubbles for contrast-enhanced ultrasound imaging. It has shown great promise in imaging microvasculature, tumour microenvironment, and cancer cells. Although PCCAs have been extensively studied for different diagnostic and therapeutic applications, the effect of biologically geometrical confinement on the acoustic vaporisation of PCCAs is still not clear...
August 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28675799/dr-snow-killed-a-bird-the-genesis-of-pharmacokinetics-and-pharmacodynamics-in-anaesthesia
#8
L E Mather
This essay presents a pharmacologist's perspective of what would be now called 'preclinical research' and 'uncontrolled clinical trials' surrounding the first public demonstration by William Thomas Green Morton of painless surgery achieved by the inhalation of ether in a patient at the Massachusetts General Hospital on 16 October 1846. Of the many people who made history in those earliest days of surgical anaesthesia in both the United States and Great Britain, John Snow stands out for his personal research that spanned basic science and clinical medicine...
March 2017: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/28577393/vaporised-nicotine-and-tobacco-harm-reduction-for-addressing-smoking-among-people-living-with-hiv-a-cross-sectional-survey-of-australian-hiv-health-practitioners-attitudes
#9
Stephanie K Bell, Gabriela Mena, Judith Dean, Mark Boyd, Charles Gilks, Coral Gartner
BACKGROUND: Tobacco smoking is a major cause of morbidity and mortality among people living with HIV (PLHIV). Due to the limited success of standard abstinence-focused smoking cessation strategies in this population, there is growing interest in tobacco harm reduction (THR) approaches as an additional strategy to address these high smoking rates. This study explored the attitudes of health practitioners who provide healthcare to PLHIV towards THR. METHODS: 179 Australian health practitioners who provide healthcare to PLHIV completed an online survey that measured their attitudes towards THR approaches, including switching from cigarettes to e-cigarettes or vaporised nicotine products (VNPs)...
August 1, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28576422/a-bicentric-comparative-and-prospective-study-between-classic-photovaporization-and-anatomical-greenlight-laser-vaporization-for-large-volume-prostatic-adenomas
#10
G Hibon, G Léonard, A Franceschi, V Misrai, F Bruyère
OBJECTIVE: Long-term outcome after prostate photovaporization (PVP) remains largely unknown, especially when performed on enlarged prostates. However, new vaporisation techniques (e.g., laser enucleation) are increasingly used. Our aim was to compare postoperative results after standard PVP to those of an anatomical technique. MATERIALS AND METHODS: This bicentric prospective study included males treated for enlarged prostate caused by benign prostatic hyperplasia using a GreenLight laser...
June 2017: Progrès en Urologie
https://www.readbyqxmd.com/read/28576286/a-novel-hybrid-tobacco-product-that-delivers-a-tobacco-flavour-note-with-vapour-aerosol-part-1-product-operation-and-preliminary-aerosol-chemistry-assessment
#11
Simon Poynton, Joseph Sutton, Sharon Goodall, Jennifer Margham, Mark Forster, Ken Scott, Chuan Liu, Kevin McAdam, James Murphy, Christopher Proctor
Vapour products have demonstrated potential to be a lower-risk alternative to cigarettes. The present study describes a novel hybrid tobacco product that combines a warm aerosol stream generated by an electronic vaporisation mechanism with tobacco top flavour from cut tobacco. During operation, the aerosol stream released from the vapour cartomiser is passed through a bed of blended cut tobacco by the puffing flow, elevating the tobacco temperature and eluting volatile tobacco flavour components. A preliminary but comprehensive analysis of the aerosol composition of the hybrid tobacco product found that emissions were dominated by the control vapour formulation...
August 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28560806/factors-associated-with-future-intentions-to-use-personal-vaporisers-among-those-with-some-experience-of-vaping
#12
Bernice Hua Ma, Hua-Hie Yong, Ron Borland, Ann McNeill, Sara C Hitchman
INTRODUCTION AND AIMS: Personal vaporisers (PV), including e-cigarettes, may be a harm reduction strategy for tobacco control. This study aims to identify factors associated with future intentions to vape among smokers and ex-smokers in Australia and the UK. DESIGN AND METHODS: Cross-sectional data of smokers and ex-smokers (n = 1199, mean age = 45.3 years, 44.8% male), collected in 2014/2015 and divided into four subgroups: smoking past vapers (SPV), smoking vapers (SV), ex-smoking past vapers (ESPV) and ex-smoking vapers (ESV), from the International Tobacco Control Australia and UK surveys were analysed by using regression models...
May 31, 2017: Drug and Alcohol Review
https://www.readbyqxmd.com/read/28549943/do-heat-and-moisture-exchangers-in-the-anaesthesia-breathing-circuit-preserve-body-temperature-in-dogs-undergoing-anaesthesia-for-magnetic-resonance-imaging
#13
Latifa Khenissi, Gwen Covey-Crump, Toby G Knowles, Joanna Murrell
OBJECTIVE: To investigate whether the use of a heat and moisture exchanger (HME) preserves body temperature in dogs weighing <10 kg anaesthetised for magnetic resonance imaging (MRI). STUDY DESIGN: Prospective, randomised, clinical trial. ANIMALS: Thirty-one client-owned dogs. METHODS: Dogs were assigned randomly to a treatment group [HME (n = 16) or no HME (n = 15)]. Dogs were pseudorandomised according to the premedication they were administered, either dexmedetomidine or no dexmedetomidine...
March 6, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28544292/perioperative-adverse-events-in-patients-on-continued-anticoagulation-undergoing-photoselective-vaporisation-of-the-prostate-with-the-180-w-greenlight-lithium-triborate-laser
#14
Georgia L Knapp, Venu Chalasani, Henry H Woo
OBJECTIVES: To compare perioperative factors and adverse events (AEs) in men undergoing photoselective vaporisation of the prostate (PVP) with or without continued anticoagulation therapy. PATIENTS AND METHODS: Retrospective review of a PVP database of men treated with the 180-W lithium triborate (LBO) laser from 2010 to 2016. Of 373 men, 59 underwent PVP with continued anticoagulant therapy, which was defined as treatment with heparin, warfarin, clopidogrel, dipyridamol or new oral anticoagulant drugs...
May 2017: BJU International
https://www.readbyqxmd.com/read/28412960/a-randomised-controlled-trial-to-determine-the-clinical-and-cost-effectiveness-of-thulium-laser-transurethral-vaporesection-of-the-prostate-thuvarp-versus-transurethral-resection-of-the-prostate-turp-in-the-national-health-service-nhs-the-unblocs-trial-a-study
#15
Jo Worthington, Hilary Taylor, Paul Abrams, Sara T Brookes, Nikki Cotterill, Sian M Noble, Tobias Page, K Satchi Swami, J Athene Lane, Hashim Hashim
BACKGROUND: Transurethral resection of the prostate (TURP) has been the standard operation for benign prostatic obstruction (BPO) for 40 years, with approximately 25,000 procedures performed annually, and has remained largely unchanged. It is generally a successful operation, but has well-documented risks for the patient. Thulium laser transurethral vaporesection of the prostate (ThuVARP) vaporises and resects the prostate using a surgical technique similar to TURP. The small amount of study data currently available suggests that ThuVARP may have certain advantages over TURP, including reduced blood loss and shorter hospital stay, earlier return to normal activities, and shorter duration of catheterisation...
April 17, 2017: Trials
https://www.readbyqxmd.com/read/28333127/selective-intracellular-vaporisation-of-antibody-conjugated-phase-change-nano-droplets-in-vitro
#16
A Ishijima, K Minamihata, S Yamaguchi, S Yamahira, R Ichikawa, E Kobayashi, M Iijima, Y Shibasaki, T Azuma, T Nagamune, I Sakuma
While chemotherapy is a major mode of cancer therapeutics, its efficacy is limited by systemic toxicities and drug resistance. Recent advances in nanomedicine provide the opportunity to reduce systemic toxicities. However, drug resistance remains a major challenge in cancer treatment research. Here we developed a nanomedicine composed of a phase-change nano-droplet (PCND) and an anti-cancer antibody (9E5), proposing the concept of ultrasound cancer therapy with intracellular vaporisation. PCND is a liquid perfluorocarbon nanoparticle with a liquid-gas phase that is transformable upon exposure to ultrasound...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28110368/comparison-of-the-local-effects-of-a-600-%C3%AE-m-bare-fibre-at-high-laser-power-on-lung-parenchyma-nd-yag-laser-1320-vs-1064%C3%A2-nm
#17
Andreas Kirschbaum, Detlef K Bartsch, Peter Rexin
Lung metastases are often resected non-anatomically with a laser using a diode-pumped Nd:YAG laser at a wavelength of 1320 nm with a laser output of up to 60 W. Usually the removal of lesions is carried out in contact mode by means of a bare fibre. We compared the local effects of an Nd:YAG laser at a wavelength of 1064 nm with those at a wavelength of 1320 nm using a 600-μm bare fibre in contact mode in an experimental model. The investigations were carried out on porcine lungs freshly withdrawn at the abattoir...
April 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/27986085/evidence-for-harm-reduction-in-copd-smokers-who-switch-to-electronic-cigarettes
#18
Riccardo Polosa, Jaymin Bhagwanji Morjaria, Pasquale Caponnetto, Umberto Prosperini, Cristina Russo, Alfio Pennisi, Cosimo Marcello Bruno
BACKGROUND: Electronic cigarettes (ECs) are battery-operated devices designed to vaporise nicotine, which may help smokers quitting or reducing their tobacco consumption. There is a lack of data on the health effects of EC use among smokers with COPD and whether regular use results in improvement in subjective and objective COPD outcomes. We investigated long-term changes in objective and subjective respiratory outcomes in smokers with a diagnosis of COPD who quit or reduced substantially their tobacco consumption by supplementing with or converting only to ECs use...
December 16, 2016: Respiratory Research
https://www.readbyqxmd.com/read/27900218/a-prospective-randomised-controlled-study-comparing-bipolar-plasma-vaporisation-of-the-prostate-to-monopolar-transurethral-resection-of-the-prostate
#19
Ahmed M Elsakka, Hssan H Eltatawy, Khaled H Almekaty, Ahmed R Ramadan, Tarik A Gameel, Yasser Farahat
OBJECTIVES: To compare the safety and efficacy of bipolar transurethral plasma vaporisation (B-TUVP) as an alternative to the 'gold standard' monopolar transurethral resection of the prostate (M-TURP) for the treatment of benign prostatic hyperplasia (BPH) in a prospective randomised controlled study. PATIENTS AND METHODS: In all, 82 patients indicated for prostatectomy were assigned to two groups, group I (40 patients) underwent B-TUVP and group II (42 patients) underwent M-TURP...
December 2016: Arab Journal of Urology
https://www.readbyqxmd.com/read/27881792/estimates-of-radiation-doses-to-the-skin-for-people-camped-at-wallatinna-during-the-uk-totem-1-atomic-weapons-test
#20
G A Williams, R S O'Brien, M Grzechnik, K N Wise
A group of Aboriginal people was camped at Wallatinna in South Australia, ~170 km downwind from Emu Field, where an atomic test (the Totem 1 test) was carried out at 07.00 on 15 October 1953 local time (21.30 on 14 October 1953 GMT (Greenwich Mean Time)). They left the camp ~24 hours later. These people stated that a phenomenon that has become known as a 'black mist' rolled through their camp site ~5 hours after detonation and that some of them subsequently became sick, displaying skin reddening and nausea...
April 28, 2017: Radiation Protection Dosimetry
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