keyword
MENU ▼
Read by QxMD icon Read
search

Plateau pressure

keyword
https://www.readbyqxmd.com/read/29792755/dalangtan-saline-playa-in-a-hyperarid-region-on-tibet-plateau-i-evolution-and-environments
#1
Fanjing Kong, Mianping Zheng, Bin Hu, Alian Wang, Nina Ma, Pablo Sobron
Since 2008, we have been studying a saline lake, Dalangtan (DLT) Playa, and its surroundings in a hyperarid region of the Qaidam Basin on the Tibetan Plateau as a potential Mars analog site. We describe the evolution of saline deposits in the Qaidam Basin (including DLT), based on investigative findings accumulated over the course of 60 years of geological surveys. In addition, we report regional meteorological patterns recorded for the past 32 years along with meteorological station recorded data at DLT since 2012...
May 24, 2018: Astrobiology
https://www.readbyqxmd.com/read/29781156/effects-of-low-intensity-pulsed-ultrasound-on-radiographic-healing-of-tibial-plateau-leveling-osteotomies-in-dogs-a-prospective-randomized-double-blinded-study
#2
Nina R Kieves, Sherman O Canapp, Peter J Lotsikas, Scott A Christopher, Christopher S Leasure, Debra Canapp, Patrick R Gavin
OBJECTIVE: To determine the influence of low-intensity pulsed ultrasound (LIPUS) on radiographic healing and limb function after uncomplicated, stable osteotomies in dogs. STUDY DESIGN: In vivo, prospective, randomized, double-blinded, placebo-control study. SAMPLE POPULATION: Fifty client-owned dogs. METHODS: Fifty client-owned dogs with naturally occurring unilateral cranial cruciate ligament rupture were enrolled prior to tibial plateau leveling osteotomy...
May 20, 2018: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/29777687/physiological-stress-responses-in-wild-asian-elephants-elephas-maximus-in-a-human-dominated-landscape-in-the-western-ghats-southern-india
#3
Sreedhar Vijayakrishnan, Mavatur Ananda Kumar, G Umapathy, Vinod Kumar, Anindya Sinha
Increasing anthropogenic pressures on forests, especially in the tropical regions of the world, have restricted several large mammalian species such as the Asian elephant to fragmented habitats within human-dominated landscapes. In this study, we assessed the effects of an anthropogenic landscape and its associated conflict with humans on the physiological stress responses displayed by Asian elephants in the Anamalai Hills of the Western Ghats mountains in south India. We have quantified faecal glucocorticoid metabolite (FGM) concentrations in focal individual elephants within and across herds, inhabiting both anthropogenic and natural habitats, and evaluated their physiological responses to different socio-ecological situations between November 2013 and April 2014...
May 16, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29771701/dynamic-contrast-enhanced-ultrasound-identifies-microcirculatory-alterations-in-sepsis-induced-acute-kidney-injury
#4
Alexandre Lima, Tom van Rooij, Bulent Ergin, Michele Sorelli, Yasin Ince, Patricia A C Specht, Egbert G Mik, Leonardo Bocchi, Klazina Kooiman, Nico de Jong, Can Ince
OBJECTIVES: We developed quantitative methods to analyze microbubble kinetics based on renal contrast-enhanced ultrasound imaging combined with measurements of sublingual microcirculation on a fixed area to quantify early microvascular alterations in sepsis-induced acute kidney injury. DESIGN: Prospective controlled animal experiment study. SETTING: Hospital-affiliated animal research institution. SUBJECTS: Fifteen female pigs...
May 15, 2018: Critical Care Medicine
https://www.readbyqxmd.com/read/29765615/prognostic-significance-of-repeated-brain-natriuretic-peptide-measurements-after-percutaneous-transluminal-septal-myocardial-ablation-in-patients-with-drug-refractory-hypertrophic-obstructive-cardiomyopathy
#5
Keitaro Akita, Hikaru Tsuruta, Shinsuke Yuasa, Mitsushige Murata, Keiichi Fukuda, Yuichiro Maekawa
Objectives: To evaluate whether repeated brain natriuretic peptide (BNP) measurements after percutaneous transluminal septal myocardial ablation (PTSMA) provide prognostic information regarding the response to PTSMA in patients with drug-refractory hypertrophic obstructive cardiomyopathy (HOCM). Background: Plasma BNP levels are associated with clinical outcomes in patients with HOCM. However, the prognostic value of plasma BNP level changes before and after PTSMA remains unclear...
2018: Open Heart
https://www.readbyqxmd.com/read/29760903/function-related-drivers-of-skull-morphometric-variation-and-sexual-size-dimorphism-in-a-subterranean-rodent-plateau-zokor-eospalax-baileyi
#6
Junhu Su, Ibrahim M Hegab, Weihong Ji, Zhibiao Nan
Sexual dimorphism is prevalent in most living organisms. The difference in size between sexes of a given species is generally known as sexual size dimorphism (SSD). The magnitude of the SSD is determined by Rensch's rule where size dimorphism increases with increasing body size when the male is the larger sex and decreases with increasing average body size when the female is the larger sex. The unique underground environment that zokors ( Eospalax baileyi ) live under in the severe habitat of the Qinghai-Tibetan Plateau (QTP) could create SSD selection pressures that may or may not be supported by Rensch's rule, making this scientific question worthy of investigation...
May 2018: Ecology and Evolution
https://www.readbyqxmd.com/read/29744774/performance-and-applications-of-bedside-visual-inspection-of-airway-pressure-time-curve-profiles-for-estimating-stress-index-in-patients-with-acute-respiratory-distress-syndrome
#7
Phunsup Wongsurakiat, Nadwipa Yuangtrakul
To determine the performance of bedside visual inspection of airway pressure-time (Paw-t) curve profiles (VI) for estimating stress index (SI) in patients with acute respiratory distress syndrome (ARDS). A prospective study in 30 subjects with ARDS receiving mechanical ventilation at two peak inspiratory flow (PIF) settings: 60 or 40 L/min. For each study session, two physicians inspected real-time Paw-t waveforms from mechanical ventilator's monitoring screens at bedside for 30 s and interpreted which of the three patterns (tidal recruitment, noninjurious ventilation or tidal overdistension) the Paw-t curve profile was compatible with...
May 9, 2018: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/29744193/effectiveness-of-implant-surface-debridement-using-particle-beams-at-differing-air-pressures
#8
Max C T Wei, Carol Tran, Neil Meredith, Laurence James Walsh
Because implant surface decontamination is challenging, air powder abrasive systems have been suggested as an alternative debridement method. This in vitro study investigated the effectiveness of different powder formulations and air pressures in cleaning implant surfaces and the extent of surface damage. A validated ink model of implant biofilm was used. Sterile 4.1 × 10 mm Grade 4 titanium implants were coated in a blue indelible ink to form a uniform, visually detectable biofilm-like layer over the implant threads and mounted into a bone replica material with bony defects to approximate peri-implantitis...
August 2017: Clinical and Experimental Dental Research
https://www.readbyqxmd.com/read/29743094/feasibility-and-safety-of-low-flow-extracorporeal-co-2-removal-managed-with-a-renal-replacement-platform-to-enhance-lung-protective-ventilation-of-patients-with-mild-to-moderate-ards
#9
Matthieu Schmidt, Samir Jaber, Elie Zogheib, Thomas Godet, Gilles Capellier, Alain Combes
BACKGROUND: Extracorporeal carbon-dioxide removal (ECCO2 R) might allow ultraprotective mechanical ventilation with lower tidal volume (VT) (< 6 ml/kg predicted body weight), plateau pressure (Pplat ) (< 30 cmH2 O), and driving pressure to limit ventilator-induced lung injury. This study was undertaken to assess the feasibility and safety of ECCO2 R managed with a renal replacement therapy (RRT) platform to enable very low tidal volume ventilation of patients with mild-to-moderate acute respiratory distress syndrome (ARDS)...
May 10, 2018: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/29742448/linking-lung-function-to-structural-damage-of-alveolar-epithelium-in-ventilator-induced-lung-injury
#10
Katharine L Hamlington, Bradford J Smith, Celia M Dunn, Chantel M Charlebois, Gregory S Roy, Jason H T Bates
Understanding how the mechanisms of ventilator-induced lung injury (VILI), namely atelectrauma and volutrauma, contribute to the failure of the blood-gas barrier and subsequent intrusion of edematous fluid into the airspace is essential for the design of mechanical ventilation strategies that minimize VILI. We ventilated mice with different combinations of tidal volume and positive end-expiratory pressure (PEEP) and linked degradation in lung function measurements to injury of the alveolar epithelium observed via scanning electron microscopy...
May 6, 2018: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/29723635/subchondral-bone-circulation-in-osteoarthritis-of-the-human-knee
#11
Roy K Aaron, Jennifer R Racine, Anne Voisinet, Peter Evangelista, Jonathan P Dyke
OBJECTIVE: The hypothesis of this study is that human subchondral bone exhibits abnormal patterns of perfusion in osteoarthritis (OA) that can be characterized by kinetic parameters of blood flow using dynamic contrast enhanced (DCE) MRI. DESIGN: Fifteen subjects with advanced OA of the knee and 7 control subjects without OA were studied at 1.5 Tesla with DCE-MRI. Region of interest (ROIs) analysis of pharmacokinetic perfusion parameters were used to examine initial uptake and washout of the contrast agent in the lateral tibial plateau...
April 30, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29721013/changes-in-hepatic-blood-flow-and-liver-function-during-closed-abdominal-hyperthermic-intraperitoneal-chemotherapy-following-cytoreduction-surgery
#12
Stéphanie Dupont, Eduardo R C Schiffer, Marion J White, John R A Diaper, Marc-Joseph Licker, Philippe C Masouyé
Background: The increase in intra-abdominal pressure (IAP) during closed abdominal hyperthermic intraperitoneal chemotherapy (HIPEC) leads to major haemodynamic changes and potential organ dysfunction. We investigated these effects on hepatic blood flow (HBF) and liver function in patients undergoing HIPEC following cytoreductive surgery and fluid management guided by dynamic preload indices. Methods: In this prospective observational clinical study including 15 consecutive patients, we evaluated HBF by transesophageal echocardiography and liver function by determination of the indocyanine green plasma disappearance rate (ICG-PDR)...
2018: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/29716909/survival-of-patients-with-severe-acute-respiratory-distress-syndrome-treated-without-extracorporeal-membrane-oxygenation
#13
Sarina K Sahetya, Roy G Brower, R Scott Stephens
BACKGROUND: Case series have reported favorable outcomes with extracorporeal membrane oxygenation (ECMO) in patients with severe acute respiratory distress syndrome. However, those patients were generally young, with few comorbid conditions. OBJECTIVE: To characterize the clinical features and survival rates of patients with severe acute respiratory distress syndrome who met criteria for ECMO but were managed without it. METHODS: Patients who met the study criteria were identified prospectively...
May 2018: American Journal of Critical Care: An Official Publication, American Association of Critical-Care Nurses
https://www.readbyqxmd.com/read/29707298/effects-of-volume-controlled-ventilation-vs-pressure-controlled-ventilation-on-respiratory-function-and-inflammatory-factors-in-patients-undergoing-video-assisted-thoracoscopic-radical-resection-of-pulmonary-carcinoma
#14
Jing Tan, Zhenghuan Song, Qingming Bian, Pengyi Li, Lianbing Gu
Background: The best ventilation approach for patients undergoing video-assisted thoracic surgery (ATS) for pulmonary carcinoma remains undefined. This study aimed to assess hemodynamics, airway pressure, arterial blood gas, and inflammatory factors in patients undergoing VATS for pulmonary carcinoma under volume-controlled ventilation (VCV) or pressure-controlled ventilation (PCV). Methods: This was a prospective study of 60 patients with pulmonary carcinoma treated at a tertiary center in 2015-2016...
March 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29692088/-sap-flux-density-in-response-to-rainfall-pulses-for-pinus-tabuliformis-and-hippophae-rhamnoides-from-mixed-plantation-in-hilly-loess-plateau
#15
Sen Bao Lu, Yun Ming Chen, Ya Kun Tang, Xu Wu, Jie Wen
Thermal dissipation probe (TDP) was used to continuously measure the sap flux density (Fd ) of Pinus tabuliformis and Hippophae rhamnoides individuals in hilly Loess Plateau, from June to October 2015, and the environmental factors, i.e., photosynthetic active radiation (PAR), water vapor pressure deficit (VPD), and soil water content (SWC), were simultaneously monitored to clarify the difference of rainfall utilization between the two tree species in a mixed plantation. Using the methods of a Threshold-delay model, stepwise multiple regression analyses, and partial correlation analyses, this paper studied the process of Fd in these two species in response to the rainfall pulses and then determined the effects of environmental factors on Fd ...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29691364/primary-care-colorectal-cancer-screening-correlates-with-breast-cancer-screening-implications-for-colorectal-cancer-screening-improvement-interventions
#16
Jennifer M Weiss, Nancy Pandhi, Sally Kraft, Aaron Potvien, Pascale Carayon, Maureen A Smith
OBJECTIVE: National colorectal cancer (CRC) screening rates have plateaued. To optimize interventions targeting those unscreened, a better understanding is needed of how this preventive service fits in with multiple preventive and chronic care needs managed by primary care providers (PCPs). This study examines whether PCP practices of other preventive and chronic care needs correlate with CRC screening. METHODS: We performed a retrospective cohort study of 90 PCPs and 33,137 CRC screening-eligible patients...
April 25, 2018: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/29688788/respiratory-effects-of-low-versus-high-tidal-volume-with-or-without-positive-end-expiratory-pressure-in-anesthetized-dogs-with-healthy-lungs
#17
Valentina De Monte, Antonello Bufalari, Salvatore Grasso, Fabienne Ferrulli, Alberto Maria Crovace, Luca Lacitignola, Francesco Staffieri
OBJECTIVE To evaluate the impact of 2 tidal volumes (TV s) with or without positive end-expiratory pressure (PEEP) on lung mechanics, aeration, and gas exchange in healthy anesthetized dogs. ANIMALS 40 mixed-breed dogs with healthy lungs. PROCEDURES Anesthetized dogs were randomly assigned to 4 groups (n = 10/group) with different ventilatory settings: TV of 8 mL/kg and PEEP of 0 cm H2 O (low TV group), TV of 8 mL/kg and PEEP of 5 cm H2 O (low TV plus PEEP group), TV of 15 mL/kg and PEEP of 0 cm H2 O (high TV group), or TV of 15 mL/kg and PEEP of 5 cm H2 O (high TV plus PEEP group)...
May 2018: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/29688549/transpiration-and-stomatal-conductance-in-a-young-secondary-tropical-montane-forest-contrasts-between-native-trees-and-invasive-understorey-shrubs
#18
Chandra Prasad Ghimire, L Adrian Bruijnzeel, Maciek W Lubczynski, Bob W Zwartendijk, Vincent Omondi Odongo, Maafaka Ravelona, H J Ilja van Meerveld
It has been suggested that vigorous secondary tropical forests can have very high transpiration rates, but sap flow and stomatal conductance dynamics of trees and shrubs in these forests are understudied. In an effort to address this knowledge gap, sap flow (thermal dissipation method, 12 trees) and stomatal conductance (porometry, six trees) were measured for young (5-7 years) Psiadia altissima (DC.) Drake trees, a widely occurring species dominating young regrowth following abandonment of swidden agriculture in upland eastern Madagascar...
April 21, 2018: Tree Physiology
https://www.readbyqxmd.com/read/29686542/factors-among-patients-receiving-prone-positioning-for-the-acute-respiratory-distress-syndrome-found-useful-for-predicting-mortality-in-the-intensive-care-unit
#19
Ariel M Modrykamien, Yahya Daoud
Optimal mechanical ventilation management in patients with the acute respiratory distress syndrome (ARDS) involves the use of low tidal volumes and limited plateau pressure. Refractory hypoxemia may not respond to this strategy, requiring other interventions. The use of prone positioning in severe ARDS resulted in improvement in 28-day survival. To determine whether mechanical ventilation strategies or other parameters affected survival in patients undergoing prone positioning, a retrospective analysis was conducted of a consecutive series of patients with severe ARDS treated with prone positioning...
January 2018: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/29680602/rod-shaped-cavitation-bubble-structure-in-ultrasonic-field
#20
Lixin Bai, Pengfei Wu, Huiyu Liu, Jiuchun Yan, Chang Su, Chao Li
Rod-shaped cavitation bubble structure in thin liquid layers in ultrasonic field is investigated experimentally. It is found that cavitation structure successively experiences several stages with the change of the thickness of the thin liquid layer. Rod-shaped structure is a stable structure of the boundary between the cavitation cloud region and the non-cavitation liquid region, which can be formed in two different ways. Cavitation bubbles in a thin liquid layer have a distribution in the thickness direction...
June 2018: Ultrasonics Sonochemistry
keyword
keyword
25540
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"