keyword
MENU ▼
Read by QxMD icon Read
search

Pulmonary physiology

keyword
https://www.readbyqxmd.com/read/27919283/outcomes-and-survival-prediction-models-for-severe-adult-acute-respiratory-distress-syndrome-treated-with-extracorporeal-membrane-oxygenation
#1
REVIEW
Sacha Rozencwajg, David Pilcher, Alain Combes, Matthieu Schmidt
Extracorporeal membrane oxygenation (ECMO) for severe acute respiratory distress syndrome (ARDS) has known a growing interest over the last decades with promising results during the 2009 A(H1N1) influenza epidemic. Targeting populations that can most benefit from this therapy is now of major importance.Survival has steadily improved for a decade, reaching up to 65% at hospital discharge in the most recent cohorts. However, ECMO is still marred by frequent and significant complications such as bleeding and nosocomial infections...
December 5, 2016: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/27919268/air-liquid-interface-exposure-to-aerosols-of-poorly-soluble-nanomaterials-induces-different-biological-activation-levels-compared-to-exposure-to-suspensions
#2
Thomas Loret, Emmanuel Peyret, Marielle Dubreuil, Olivier Aguerre-Chariol, Christophe Bressot, Olivier le Bihan, Tanguy Amodeo, Bénédicte Trouiller, Anne Braun, Christophe Egles, Ghislaine Lacroix
BACKGROUND: Recently, much progress has been made to develop more physiologic in vitro models of the respiratory system and improve in vitro simulation of particle exposure through inhalation. Nevertheless, the field of nanotoxicology still suffers from a lack of relevant in vitro models and exposure methods to predict accurately the effects observed in vivo, especially after respiratory exposure. In this context, the aim of our study was to evaluate if exposing pulmonary cells at the air-liquid interface to aerosols of inhalable and poorly soluble nanomaterials generates different toxicity patterns and/or biological activation levels compared to classic submerged exposures to suspensions...
November 3, 2016: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/27919253/cystic-fibrosis-lung-environment-and-pseudomonas-aeruginosa-infection
#3
Anjali Y Bhagirath, Yanqi Li, Deepti Somayajula, Maryam Dadashi, Sara Badr, Kangmin Duan
BACKGROUND: The airways of patients with cystic fibrosis (CF) are highly complex, subject to various environmental conditions as well as a distinct microbiota. Pseudomonas aeruginosa is recognized as one of the most important pulmonary pathogens and the predominant cause of morbidity and mortality in CF. A multifarious interplay between the host, pathogens, microbiota, and the environment shapes the course of the disease. There have been several excellent reviews detailing CF pathology, Pseudomonas and the role of environment in CF but only a few reviews connect these entities with regards to influence on the overall course of the disease...
December 5, 2016: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/27919184/role-of-engineered-metal-oxide-nanoparticle-agglomeration-in-reactive-oxygen-species-generation-and-cathepsin-b-release-in-nlrp3-inflammasome-activation-and-pulmonary-toxicity
#4
Tina M Sager, Michael Wolfarth, Stephen S Leonard, Anna M Morris, Dale W Porter, Vincent Castranova, Andrij Holian
Incomplete understanding of the contributions of dispersants and engineered nanoparticles/materials (ENM) agglomeration state to biological outcomes presents an obstacle for toxicological studies. Although reactive oxygen species (ROS) production is often regarded as the primary indicator of ENM bioactivity and toxicity, it remains unclear whether ENM produce ROS or whether ROS is an outcome of ENM-induced cell injury. Phagolysosomal disruption and cathepsin B release also promote bioactivity through inflammasome activation...
December 5, 2016: Inhalation Toxicology
https://www.readbyqxmd.com/read/27916051/-the-value-of-lung-ultrasound-score-for-therapeutic-effect-assessment-of-ventilator-associated-pneumonia
#5
L M Li, L H Li, J Guan, Q Yang, J Q Han, Y G Chao
To study the value of lung ultrasound score (LUS) in assessing the clinical outcome of patients with ventilator-associated pneumonia(VAP). A total of 99 VAP patients were enrolled in a prospective study. All patients met the diagnostic criterion of VAP based on the 2013 guidelines and admitted into our ICU from Jun 2013 to Jun 2015. All parameters were recorded on the diagnostic day (day 1) and day 5, including LUS, clinical pulmonary infection score (CPIS), chest X ray (CXR), Acute Physiology and Chronic Health Evaluation Ⅱ (APACHEⅡ) score, Sequential Organ Failure Assessment(SOFA) score, etc...
December 1, 2016: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/27915422/state-of-the-art-review-of-the-right-ventricle-in-copd-patients-it-is-time-to-look-closer
#6
REVIEW
Daniela Graner Schuwartz Tannus-Silva, Marcelo Fouad Rabahi
Since the first description of pulmonary circulation in the 16th century, the knowledge of the complex interaction between the heart and lungs has greatly improved. Hypoxemia plays a classical role in the development of complications such as pulmonary hypertension and right ventricle (RV) dysfunction in patients presenting with chronic obstructive pulmonary disease (COPD). However, more recent results have revealed the presence of RV vascular structural and functional changes even in patients with mild COPD, without hypoxemia or pulmonary hypertension at rest...
December 3, 2016: Lung
https://www.readbyqxmd.com/read/27909538/pulmonary-vein-remodeling-following-atrial-fibrillation-ablation-implications-for-the-radiographic-diagnosis-of-pulmonary-vein-stenosis
#7
Faisal M Merchant Md, Mathew R Levy Bs, Shahriar Iravanian Md, Ramal M Weragoda Md, Edward C Clermont Md, Heval M Kelli Md, Robert L Eisner PhD, David Vadnais Md, Mikhael F El-Chami Md, Angel R Leon Md, David B Delurgio Md
Background: Pulmonary vein (PV) reverse remodeling has been recognized following atrial fibrillation (AF) ablation. However, the extent of physiologic reverse remodeling after AF ablation and the potential impact of reverse remodeling on the radiographic diagnosis of PV stenosis have not been well characterized. Methods: From January 2004 to February 2014, 186 patients underwent paired cardiac magnetic resonance imaging (MRI) to delineate PV orifice dimensions before and after (mean 109 ± 61 days) an initial AF ablation...
August 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909231/influence-of-dietary-nitrate-supplementation-on-physiological-and-muscle-metabolic-adaptations-to-sprint-interval-training
#8
Christopher Thompson, Lee J Wylie, Jamie R Blackwell, Jonathan Fulford, Matthew I Black, James Kelly, Sinead T J McDonagh, James Carter, Stephen J Bailey, Anni Vanhatalo, Andrew M Jones
We hypothesized that 4 weeks of dietary nitrate supplementation would enhance exercise performance and muscle metabolic adaptations to sprint interval training (SIT). Thirty six recreationally-active subjects, matched on key variables at baseline, completed a series of exercise tests before and following a 4 week period in which they were allocated to one of the following groups: 1) SIT and NO3(-)-depleted beetroot juice as a placebo (SIT+PL); 2) SIT and NO3(-)-rich beetroot juice (~13mmol NO3(-)/day; SIT+BR); or 3) no training and NO3(-)-rich beetroot juice (NT+BR)...
December 1, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27903260/clinical-physiologic-and-radiographic-factors-contributing-to-development-of-hypoxemia-in-moderate-to-severe-copd-a-cohort-study
#9
J Michael Wells, Raul San Jose Estepar, Merry-Lynn N McDonald, Surya P Bhatt, Alejandro A Diaz, William C Bailey, Francine L Jacobson, Mark T Dransfield, George R Washko, Barry J Make, Richard Casaburi, Edwin J R van Beek, Eric A Hoffman, Frank C Sciurba, James D Crapo, Edwin K Silverman, Craig P Hersh
BACKGROUND: Hypoxemia is a major complication of COPD and is a strong predictor of mortality. We previously identified independent risk factors for the presence of resting hypoxemia in the COPDGene cohort. However, little is known about characteristics that predict onset of resting hypoxemia in patients who are normoxic at baseline. We hypothesized that a combination of clinical, physiologic, and radiographic characteristics would predict development of resting hypoxemia after 5-years of follow-up in participants with moderate to severe COPD METHODS: We analyzed 678 participants with moderate-to-severe COPD recruited into the COPDGene cohort who completed baseline and 5-year follow-up visits and who were normoxic by pulse oximetry at baseline...
December 1, 2016: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/27902768/human-lung-tissue-transcriptome-influence-of-sex-and-age
#10
Matteo Dugo, Chiara E Cotroneo, Emilie Lavoie-Charland, Matteo Incarbone, Luigi Santambrogio, Lorenzo Rosso, Maarten van den Berge, David Nickle, Peter D Paré, Yohan Bossé, Tommaso A Dragani, Francesca Colombo
BACKGROUND: Sex and age strongly influence the pathophysiology of human lungs, but scarce information is available about their effects on pulmonary gene expression. METHODS: We followed a discovery-validation strategy to identify sex- and age-related transcriptional differences in lung. RESULTS: We identified transcriptional profiles significantly associated with sex (215 genes; FDR < 0.05) and age at surgery (217 genes) in non-involved lung tissue resected from 284 lung adenocarcinoma patients...
2016: PloS One
https://www.readbyqxmd.com/read/27898867/angus-calves-born-and-raised-at-high-altitude-adapt-to-hypobaric-hypoxia-by-increasing-alveolar-ventilation-rate-but-not-hematocrit
#11
A K Gulick, F B Garry, T N Holt, K Retallick-Trennepohl, R M Enns, M G Thomas, J M Neary
The objective of this study was to evaluate the effect of altitude on arterial blood-gases and hematocrit in Angus-based calves. It was hypothesized that alveolar ventilation rate, as indicated by arterial pCO, would increase with altitude but hematocrit would not. Five Angus-based herds ( = 30 to 80 per cohort) located at 105 m, 1,470 m, 2,010 m, 2,170 m, and 2,730 m above sea level were enrolled in this prospective cohort study. A portable analyzer measured blood-gas tensions in coccygeal arterial blood. Calves at 1,470 m, 2,170 m, and 2,730 m were sampled twice, at approximately 4 mo and 7 mo of age...
October 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27897995/monitoring-of-physiological-parameters-to-predict-exacerbations-of-chronic-obstructive-pulmonary-disease-copd-a-systematic-review
#12
Ahmed M Al Rajeh, John R Hurst
INTRODUCTION: The value of monitoring physiological parameters to predict chronic obstructive pulmonary disease (COPD) exacerbations is controversial. A few studies have suggested benefit from domiciliary monitoring of vital signs, and/or lung function but there is no existing systematic review. OBJECTIVES: To conduct a systematic review of the effectiveness of monitoring physiological parameters to predict COPD exacerbation. METHODS: An electronic systematic search compliant with Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines was conducted...
November 25, 2016: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/27894999/matched-comparative-modeling-of-normal-and-diseased-human-airway-responses-using-a-microengineered-breathing-lung-chip
#13
Kambez H Benam, Richard Novak, Janna Nawroth, Mariko Hirano-Kobayashi, Thomas C Ferrante, Youngjae Choe, Rachelle Prantil-Baun, James C Weaver, Anthony Bahinski, Kevin K Parker, Donald E Ingber
Smoking represents a major risk factor for chronic obstructive pulmonary disease (COPD), but it is difficult to characterize smoke-induced injury responses under physiological breathing conditions in humans due to patient-to-patient variability. Here, we show that a small airway-on-a-chip device lined by living human bronchiolar epithelium from normal or COPD patients can be connected to an instrument that "breathes" whole cigarette smoke in and out of the chips to study smoke-induced pathophysiology in vitro...
November 23, 2016: Cell Systems
https://www.readbyqxmd.com/read/27893797/risk-factors-for-multiple-organ-dysfunction-syndrome-in-severe-stroke-patients
#14
Wei Qin, Xiaoyu Zhang, Shuna Yang, Yue Li, Junliang Yuan, Lei Yang, Shujuan Li, Wenli Hu
BACKGROUND: Severe stroke patients have poor clinical outcome which may be associated with development of multiple organ dysfunction syndrome (MODS). Therefore, the aim of our study was to investigate independent risk factors for development of MODS in severe stroke patients. METHODS: Ninety seven severe stroke patients were prospective recruited from Jan 2011 to Jun 2015. The development of MODS was identified by Sequential Organ Failure Assessment (SOFA) score (score ≥ 3, at least two organs), which was assessed on day 1, 4, 7, 10 and 14 after admission...
2016: PloS One
https://www.readbyqxmd.com/read/27893645/preperitoneal-pelvic-packing-reduces-mortality-in-patients-with-life-threatening-hemorrhage-due-to-unstable-pelvic-fractures
#15
Clay Cothren Burlew, Ernest E Moore, Philip F Stahel, Andrea E Geddes, Amy E Wagenaar, Fredric M Pieracci, Charles J Fox, Eric M Campion, Jeffrey L Johnson, Cyril Mauffrey
BACKGROUND: A 2015 AAST trial reported a 32% mortality for pelvic fracture patients in shock. Angioembolization (AE) is the most common intervention; the Maryland group revealed time to AE averaged 5 hours. The goal of this study was to evaluate the time to intervention and outcomes of an alternative approach for pelvic hemorrhage. We hypothesized preperitoneal pelvic packing (PPP) results in a shorter time to intervention and lower mortality. METHODS: In 2004 we initiated a PPP protocol for pelvic fracture hemorrhage...
November 23, 2016: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/27890991/pulmonary-alveolar-proteinosis-experience-from-a-tertiary-care-center-and-systematic-review-of-indian-literature
#16
Vijay Hadda, Pawan Tiwari, Karan Madan, Anant Mohan, Nishkarsh Gupta, Sachidanand Jee Bharti, Vinod Kumar, Rakesh Garg, Anjan Trikha, Deepali Jain, Sudheer Arava, Gopi C Khilnani, Randeep Guleria
BACKGROUND: Pulmonary alveolar proteinosis (PAP) is a rare disorder characterized by deposition of lipoproteinaceous material within alveoli, with a variable clinical course. Here, we report an experience of management of PAP at our center. A systematic review of previously reported cases from India is also included in the article. MATERIALS AND METHODS: This study included patients with primary PAP managed at our center from 2009 to 2015. Diagnosis of primary PAP was based on histopathologic diagnosis on bronchoalveolar lavage or transbronchial lung biopsy and absence of causes of secondary PAP...
November 2016: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/27888995/efficacy-of-non-invasive-ventilation-as-a-rescue-therapy-for-relieving-dyspnea-in-patients-with-stable-severe-copd
#17
Yong-Er Ou, Zhi-Min Lin, Wei-Liang Wu, Qun Luo, Rong-Chang Chen
Exertional Dyspnea is a troublesome symptom in chronic obstructive pulmonary disease (COPD) even after optimal therapy, which is a physiological and perceptional burden to limit their activities. Non-invasive ventilation (NIV) might provide rescue therapy for this population to relieve exertional dyspnea. This was a randomized crossover study in 18 patients with stable severe COPD. Exertional dyspnea was induced with maximal symptom-limited incremental cycle exercise. Then the patients would randomly receive oxygen or NIV plus oxygen therapy...
December 2016: Respiratory Medicine
https://www.readbyqxmd.com/read/27888990/a-randomized-controlled-multicentric-study-of-inhaled-budesonide-and-intravenous-methylprednisolone-in-the-treatment-on-acute-exacerbation-of-chronic-obstructive-pulmonary-disease
#18
Zhen Ding, Xiu Li, Youjin Lu, Guangsheng Rong, Ruiqing Yang, Ruixia Zhang, Guiqin Wang, Xiqiang Wei, Yongqing Ye, Zhaoxia Qian, Hongyan Liu, Daifeng Zhu, Ruiqing Zhou, Kun Zhu, Rongping Ni, Kui Xia, Nan Luo, Cong Pei
BACKGROUND: Almost all international guidelines recommend corticosteroids for management of exacerbations of chronic obstructive pulmonary disease (COPD), because it leads to improved outcomes of acute exacerbations of chronic obstructive pulmonary disease (AECOPD). Nevertheless, due to its side effects, there are still concerns regarding the use of systemic corticosteroid (SC). Inhaled corticosteroids (IC) can be used as an alternative to SC, while reducing the risk of occurrence of side effects...
December 2016: Respiratory Medicine
https://www.readbyqxmd.com/read/27888398/the-value-of-the-electrocardiogram-for-evaluating-prognosis-in-patients-with-idiopathic-pulmonary-arterial-hypertension
#19
Xiao-Ling Cheng, Jian-Guo He, Zhi-Hong Liu, Qing Gu, Xin-Hai Ni, Zhi-Hui Zhao, Qin Luo, Chang-Ming Xiong
BACKGROUND: Association between electrocardiography (ECG) features and right ventricular anatomy and physiology has been established. This study is aimed to identify the value of 12-lead ECG in evaluating prognosis of patients with idiopathic pulmonary arterial hypertension (IPAH). METHOD: 194 patients with newly diagnosed IPAH were included in this study. Correlations between electrocardiography variables and hemodynamics were assessed. Univariate and multivariable cox regression analysis were performed to identify ECG variables for predicting all-cause mortality in IPAH...
November 25, 2016: Lung
https://www.readbyqxmd.com/read/27884776/inverted-orientation-improves-decellularization-of-whole-porcine-hearts
#20
Po-Feng Lee, Eric Chau, Rafael Cabello, Alvin T Yeh, Luiz C Sampaio, Andrea S Gobin, Doris A Taylor
: In structurally heterogeneous organs, such as heart, it is challenging to retain extracellular matrix integrity in the thinnest regions (eg, valves) during perfusion decellularization and completely remove cellular debris from thicker areas. The high inflow rates necessary to maintain physiologic pressure can distend or damage thin tissues, but lower pressures prolong the process and increase the likelihood of contamination. We examined two novel retrograde decellularization methods for porcine hearts: inverting the heart or venting the apex to decrease inflow rate...
November 21, 2016: Acta Biomaterialia
keyword
keyword
9175
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"