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Artificial ventilation

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https://www.readbyqxmd.com/read/28089920/g-protein-coupled-estrogen-receptor-mediated-non-genomic-facilitatory-effect-of-estrogen-on-cooling-induced-reduction-of-skin-blood-flow-in-mice
#1
Izumi Serizawa, Nozomi Iwasaki, Hirotake Ishida, Shin-Ya Saito, Tomohisa Ishikawa
An enhanced vasoconstrictor activity of cutaneous arteries participates in the reduction of skin blood flow induced by cooling stimulation. Raynaud's phenomenon, which is characterized by intense cooling-induced constriction of cutaneous arteries, is more common in women during the period from menarche to menopause. We thus investigated the effect of 17β-estradiol (E2) on cooling-induced reduction of plantar skin blood flow (PSBF) in mouse in vivo. Ovariectomized female ddY mice, anaesthetized with pentobarbital, were treated with tetrodotoxin for eliminating the sympathetic nerve tone and artificially ventilated...
January 12, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28075489/cough-augmentation-techniques-for-extubation-or-weaning-critically-ill-patients-from-mechanical-ventilation
#2
REVIEW
Louise Rose, Neill Kj Adhikari, David Leasa, Dean A Fergusson, Douglas McKim
BACKGROUND: There are various reasons why weaning and extubation failure occur, but ineffective cough and secretion retention can play a significant role. Cough augmentation techniques, such as lung volume recruitment or manually- and mechanically-assisted cough, are used to prevent and manage respiratory complications associated with chronic conditions, particularly neuromuscular disease, and may improve short- and long-term outcomes for people with acute respiratory failure. However, the role of cough augmentation to facilitate extubation and prevent post-extubation respiratory failure is unclear...
January 11, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28025752/sound-level-analysis-in-endotracheal-tube-obstruction-in-spontaneous-breathing-and-mechanical-ventilation-an-animal-model-study
#3
Behzad Maghsoodi, Golnar Sabetian, Aram Azimi, Nader Tanideh, Alireza Mehdizade
Endotracheal tube (ETT) obstruction, either complete or partial, is a serious life threatening complication in intubated patients. Therefore, implementing a practical method to diagnose this condition is vital. Alteration in respiratory sound signals caused by ETT occlusion can be used for early detection of obstruction. This study is aimed to assess changes in respiratory sound signals after creation of different types of tubal obstruction in an animal model experiment. Artificial internal obstructions were created in three different sizes and three different locations by stitching pieces of smaller tubes in ETTs with internal diameter of 8 mm...
December 26, 2016: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28011948/molecular-hydrogen-affords-neuroprotection-in-a-translational-piglet-model-of-hypoxic-ischemic-encephalopathy
#4
J Nemeth, V Toth-Szuki, V Varga, V Kovacs, G Remzso, F Domoki
Hypoxic-ischemic encephalopathy (HIE) is the major consequence of perinatal asphyxia (PA) in term neonates. Although the newborn piglet is an accepted large animal PA/HIE model, there is no consensus on PA-induction methodology to produce clinically relevant HIE. We aimed to create and to characterize a novel PA model faithfully reproducing all features of asphyxiation including severe hypercapnia resulting in HIE, and to test whether H2 is neuroprotective in this model. Piglets were anaesthetised, artificially ventilated, and intensively monitored (electroencephalography, core temperature, O2 saturation, arterial blood pressure and blood gases)...
October 2016: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28003556/a-comparison-of-different-techniques-for-interfacing-capnography-with-adult-and-pediatric-supplemental-oxygen-masks
#5
Justin S Phillips, Lance P Pangilinan, Earl R E Mangalindan, Joseph L Booze, Richard H Kallet
BACKGROUND: Accurately measuring the partial pressure of end-tidal CO2 (PETCO2 ) in non-intubated patients is problematic due to dilution of expired CO2 at high O2 flows and mask designs that may either cause CO2 rebreathing or inadequately capture expired CO2. We evaluated the performance of 2 capnographic O2 masks (Cap-ONE and OxyMask) against a clinically expedient method using a standard O2 mask with a flow-directed nasal cannula used for capnography (CapnoLine) in a spontaneous breathing model of an adult and child under conditions of normal ventilation, hypoventilation, and hyperventilation...
January 2017: Respiratory Care
https://www.readbyqxmd.com/read/28003505/bortezomib-for-treatment-of-therapy-refractory-anti-nmda-receptor-encephalitis
#6
Franziska Scheibe, Harald Prüss, Annerose M Mengel, Siegfried Kohler, Astrid Nümann, Martin Köhnlein, Klemens Ruprecht, Tobias Alexander, Falk Hiepe, Andreas Meisel
OBJECTIVE: We assessed the therapeutic potential of the plasma-cell-depleting proteasome inhibitor bortezomib in severe and therapy-refractory cases of anti-NMDA receptor (anti-NMDAR) encephalitis. METHODS: Five severely affected patients with anti-NMDAR encephalitis with delayed treatment response or resistance to standard immunosuppressive and B-cell-depleting drugs (corticosteroids, IV immunoglobulins, plasma exchange, immunoadsorption, rituximab, cyclophosphamide) who required medical treatment and artificial ventilation on intensive care units were treated with 1-6 cycles of 1...
December 21, 2016: Neurology
https://www.readbyqxmd.com/read/27936179/co2-induced-atp-dependent-release-of-acetylcholine-on-the-ventral-surface-of-the-medulla-oblongata
#7
Robert T R Huckstepp, Enrique Llaudet, Alexander V Gourine
Complex mechanisms that detect changes in brainstem parenchymal PCO2/[H+] and trigger adaptive changes in lung ventilation are responsible for central respiratory CO2 chemosensitivity. Previous studies of chemosensory signalling pathways suggest that at the level of the ventral surface of the medulla oblongata (VMS), CO2-induced changes in ventilation are (at least in part) mediated by the release and actions of ATP and/or acetylcholine (ACh). Here we performed simultaneous real-time biosensor recordings of CO2-induced ATP and ACh release from the VMS in vivo and in vitro, to test the hypothesis that central respiratory CO2 chemosensory transduction involves simultaneous recruitment of purinergic and cholinergic signalling pathways...
2016: PloS One
https://www.readbyqxmd.com/read/27906423/analysis-of-factors-influenced-by-the-effectiveness-of-non-invasive-ventilation-in-the-treatment-of-acute-exacerbation-of-chronic-obstructive-pulmonary-disease-with-different-severities
#8
J-J Zhu, L-J Liu
OBJECTIVE: To investigate the correlation of levels of procalcitonin (PCT) and blood lactic acid with the effectiveness of the non-invasive ventilation (NIV) in the treatment of acute exacerbation of chronic obstructive pulmonary disease (AECOPD) with different severities. PATIENTS AND METHODS: We used a case-control method to study patients who were admitted for AECOPD to the ICU at the Second Affiliated Hospital of Soochow University from January 1, 2012, to December 31, 2014...
November 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27900726/survey-on-german-palliative-care-specialists-experiences-with-advance-directives
#9
Julia Zenz, Michael Zenz
INTRODUCTION: Advance directives (AD) play a central role in end-of-life treatments, intensive care, and palliative care. However, little is known about the experiences of healthcare professionals with ADs. This study reports on palliative care professionals' views on advance directives (AD). METHODS: A questionnaire was handed out to attendants of a palliative care symposium. RESULTS: Complete answers were obtained from 126 physicians and 276 nurses...
November 29, 2016: Pain and Therapy
https://www.readbyqxmd.com/read/27894031/artificial-placenta-analysis-of-recent-progress
#10
REVIEW
Stephen D Bird
The artificial placenta (AP) has for many decades captured the imagination of scientists and authors with popular fiction including The Matrix and Aldous Huxley's "Brave New World", depicting a human surviving ex-utero in an artificial uterine environment (AUE). For scientists this has fascinated as a way forward for extremely preterm infants (EPIs) born less than 28 weeks of gestation. Early successes with mechanical ventilation (MV) for infants born above 28 weeks of gestation meant that AP research lost momentum...
January 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/27887950/cyslt2-receptor-activation-is-involved-in-ltc4-induced-lung-air-trapping-in-guinea-pigs
#11
Tomohiko Sekioka, Michiaki Kadode, Yasuo Yonetomi, Akihiro Kamiya, Manabu Fujita, Takeshi Nabe, Kazuhito Kawabata
CysLT1 receptors are known to be involved in the pathogenesis of asthma. However, the functional roles of CysLT2 receptors in this condition have not been determined. The purpose of this study is to develop an experimental model of CysLT2 receptor-mediated LTC4-induced lung air-trapping in guinea pigs and use this model to clarify the mechanism underlying response to such trapping. Because LTC4 is rapidly converted to LTD4 by γ-glutamyltranspeptidase (γ-GTP) under physiological conditions, S-hexyl GSH was used as a γ-GTP inhibitor...
January 5, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27885143/intrapulmonary-percussive-ventilation-as-a-lung-recruitment-strategy-in-brain-dead-organ-donors
#12
Geralyn Lerg, Linda Shanta
OBJECTIVE: To determine the strength of the evidence evaluating the effectiveness of intrapulmonary percussive ventilation (IPV) as a safe alternative or adjunctive therapy to traditional chest physiotherapy (CPT) among potential organ donors. DATA SOURCES: Literature search conducted from February 2015 to November 2015 using PubMed, Cumulative Index of Nursing and Allied Health Literature, Scopus, and bibliographies of pertinent articles. SEARCH TERMS: Intrapulmonary percussive ventilation, chest physiotherapy, chest wall oscillation, organ donors, and ventilation...
November 24, 2016: Progress in Transplantation
https://www.readbyqxmd.com/read/27875279/biochemical-markers-of-nutrition-support-in-critically-ill-trauma-victims
#13
Brodie Parent, Max Seaton, Grant E O'Keefe
BACKGROUND: In critically ill patients, plasma serum albumin and transthyretin concentrations are thought to reflect the effects of acute illness, including resuscitation and inflammation. Their use as markers for preexisting nutrition status is, therefore, not recommended. Whether they can be used to assess subsequent effectiveness of artificial nutrition support is unclear. We sought to determine if these biomarkers are associated with enteral caloric intake in critically ill trauma patients...
October 3, 2016: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/27866986/modelling-of-in-vitro-and-in-vivo-performance-of-aerosol-emitted-from-different-vibrating-mesh-nebulisers-in-non-invasive-ventilation-circuit
#14
Hoda Rabea, Ahmed M A Ali, Randa Salah Eldin, Maha M Abdelrahman, Amira S A Said, Mohamed E Abdelrahim
Substituting nebulisers by another in non-invasive ventilation circuit (NIV) involves many process variables which must be adjusted to ensure patient optimum therapy. However, there is a doubt when nebulisers use the same technology. Data mining technology based on artificial neural networks and genetic algorithms were used here to model in-vitro inhalation process and predict bioavailability from inhaled doses delivered by three different vibrating mesh nebulisers (VMNs) in NIV. Modelling of data indicated that in-vitro performance of VMNs was dependent mainly on fine particle fraction, mass median aerodynamic diameter (MMAD), total emitted dose (TED) and to lesser extent on nebuliser type...
January 15, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27866810/histological-characterisation-of-visceral-changes-in-a-patient-with-type-2-gaucher-disease-treated-with-enzyme-replacement-therapy
#15
Yuko Tezuka, Mitsumasa Fukuda, Shohei Watanabe, Takeshi Nakano, Kentaro Okamoto, Kazuyo Kuzume, Yoshiaki Yano, Mariko Eguchi, Minenori Ishimae, Eiichi Ishii, Tatsuhiko Miyazaki
Gaucher disease is a lysosomal storage disease caused by deficiency of glucocerebrosidase and accumulation of glucocerebroside. Three major sub-types have been described, type 2 is an acute neurological form that exhibits serious general symptoms and poor prognosis, compared with the other types. This case was a girl diagnosed with type 2 Gaucher disease at 12months of age who presented with poor weight gain from infancy, stridor, hypertonia, hepatosplenomegaly, trismus and an eye movement disorder. Enzyme replacement therapy (ERT) was administered, but she had frequent myoclonus and developmental regression...
November 12, 2016: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/27856490/prevalence-and-contents-of-advance-directives-of-patients-with-esrd-receiving-dialysis
#16
Molly A Feely, Daniel Hildebrandt, Jithinraj Edakkanambeth Varayil, Paul S Mueller
BACKGROUND AND OBJECTIVES: ESRD requiring dialysis is associated with increased morbidity and mortality rates, including increased rates of cognitive impairment, compared with the general population. About one quarter of patients receiving dialysis choose to discontinue dialysis at the end of life. Advance directives are intended to give providers and surrogates instruction on managing medical decision making, including end of life situations. The prevalence of advance directives is low among patients receiving dialysis...
December 7, 2016: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/27836935/extracorporeal-membrane-oxygenation-ecmo-for-lung-injury-in-severe-acute-respiratory-distress-syndrome-ards-review-of-the-literature
#17
Summer Paolone
Despite advances in mechanical ventilation, severe acute respiratory distress syndrome (ARDS) is associated with high morbidity and mortality rates ranging from 26% to 58%. Extracorporeal membrane oxygenation (ECMO) is a modified cardiopulmonary bypass circuit that serves as an artificial membrane lung and blood pump to provide gas exchange and systemic perfusion for patients when their own heart and lungs are unable to function adequately. ECMO is a complex network that provides oxygenation and ventilation and allows the lungs to rest and recover from respiratory failure while minimizing iatrogenic ventilator-induced lung injury...
November 10, 2016: Clinical Nursing Research
https://www.readbyqxmd.com/read/27804916/end-of-life-care-decisions-using-a-korean-advance-directive-among-cancer-patient-caregiver-dyads
#18
Shinmi Kim, Sujin Koh, Kwonoh Park, Jinshil Kim
OBJECTIVE: The Korean advance directive (K-AD) comprises a value statement, treatment directives, preferences for cardiopulmonary resuscitation (CPR), artificial ventilation, tube feeding, and hospice care, as well as a proxy appointment. The K-AD can facilitate a patient's decision making with respect to end-of-life (EoL) care. The present study aimed to examine the extent to which patient-caregiver dyads would use the K-AD and agree on EoL care decisions. METHODS: Using a descriptive study design, 81 cancer patients were invited to participate...
November 2, 2016: Palliative & Supportive Care
https://www.readbyqxmd.com/read/27759115/kinetics-of-ventilation-induced-changes-in-diaphragmatic-metabolism-by-bilateral-phrenic-pacing-in-a-piglet-model
#19
Thomas Breuer, Nima Hatam, Benjamin Grabiger, Gernot Marx, Bradley J Behnke, Joachim Weis, Ruedger Kopp, Ghislaine Gayan-Ramirez, Norbert Zoremba, Christian S Bruells
Perioperative necessity of deep sedation is inevitably associated with diaphragmatic inactivation. This study investigated 1) the feasibility of a new phrenic nerve stimulation method allowing early diaphragmatic activation even in deep sedation and, 2) metabolic changes within the diaphragm during mechanical ventilation compared to artificial activity. 12 piglets were separated into 2 groups. One group was mechanically ventilated for 12 hrs (CMV) and in the second group both phrenic nerves were stimulated via pacer wires inserted near the phrenic nerves to mimic spontaneous breathing (STIM)...
October 19, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27749088/factors-related-to-evacuation-intentions-of-power-dependent-home-care-patients-in-japan
#20
Hisao Nakai, Keiko Tsukasaki, Kaoru Kyota, Tomoya Itatani, Reiko Nihonyanagi, Yasuko Shinmei, Shizuka Yasuoka
This study investigated factors affecting disaster preparedness and evacuation intentions among home-care patients dependent on electrical power for life support. Health professionals interviewed 53 home-care patients using the Kanazawa and Kochi Disaster Preparedness Checklist. About half of the participants requiring continuous artificial ventilation or aspiration indicated that they would not or could not evacuate following a disaster-even though their lives could be at risk. The availability of emergency medical equipment for use during a power outage was positively associated with the desire to evacuate...
October 2016: Journal of Community Health Nursing
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