keyword
MENU ▼
Read by QxMD icon Read
search

Pressure u

keyword
https://www.readbyqxmd.com/read/29334240/new-method-for-estimating-arterial-pulse-wave-velocity-at-single-site
#1
Khaled Ben Abdessalem, Patrice Flaud, Samir Zobaidi
The clinical importance of measuring local pulse wave velocity (PWV), has encouraged researchers to develop several local methods to estimate it. In this work, we proposed a new method, the sum-of-squares method [Formula: see text], that allows the estimations of PWV by using simultaneous measurements of blood pressure (P) and arterial diameter (D) at single-location. Pulse waveforms generated by: (1) two-dimensional (2D) fluid-structure interaction simulation (FSI) in a compliant tube, (2) one-dimensional (1D) model of 55 larger human systemic arteries and (3) experimental data were used to validate the new formula and evaluate several classical methods...
January 15, 2018: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/29330635/hypotension-due-to-spinal-anesthesia-influences-fetal-circulation-in-primary-caesarean-sections
#2
K Lato, I Bekes, Peter Widschwendter, T W P Friedl, W Janni, F Reister, G Froeba, U Friebe-Hoffmann
PURPOSE: Hypotension due to spinal anesthesia is a well-known side effect in pregnant women receiving caesarean section. Little is known about its impact on fetal blood circulation. METHODS: 40 women with uncomplicated singleton term pregnancies prepared for caesarean section were prospectively evaluated by Doppler sonography before and immediately after spinal anesthesia. RESULTS: In 90% of the women, blood pressure significantly decreased after spinal anesthesia and 42...
January 12, 2018: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29329321/impact-of-lipopolysaccharide-induced-acute-inflammation-on-baroreflex-controlled-sympathetic-arterial-pressure-regulation
#3
Takeshi Tohyama, Keita Saku, Toru Kawada, Takuya Kishi, Keimei Yoshida, Takuya Nishikawa, Hiroshi Mannoji, Kazuhiro Kamada, Kenji Sunagawa, Hiroyuki Tsutsui
BACKGROUND: Lipopolysaccharide (LPS) induces acute inflammation, activates sympathetic nerve activity (SNA) and alters hemodynamics. Since the arterial baroreflex is a negative feedback system to stabilize arterial pressure (AP), examining the arterial baroreflex function is a prerequisite to understanding complex hemodynamics under LPS challenge. We investigated the impact of LPS-induced acute inflammation on SNA and AP regulation by performing baroreflex open-loop analysis. METHODS: Ten anesthetized Sprague-Dawley rats were used...
2018: PloS One
https://www.readbyqxmd.com/read/29327723/the-role-of-the-consultant-in-restorative-dentistry
#4
U R Darbar
The role of a hospital consultant has changed extensively over the past decade as the National Health Service has progressed through a series of challenges including an ageing population and rising costs of clinical care. The traditional concept of a consultant has changed with different and increased expectations of the role as the pressures to deliver high quality patient care, education and advice continue to rise in a difficult financial climate. In addition, consultants in restorative dentistry are faced with the challenge of a poor general awareness of the scope of their speciality and their role...
January 12, 2018: British Dental Journal
https://www.readbyqxmd.com/read/29325851/microbial-population-changes-in-patients-with-medication-related-osteonecrosis-of-the-jaw-treated-with-systemic-antibiotics
#5
Lieselotte De Bruyn, Ruxandra Coropciuc, Wim Coucke, Constantinus Politis
OBJECTIVE: This study aimed to investigate the bacterial population in patients with medication-related osteonecrosis of the jaw (MRONJ) after treatment with doxycycline and metronidazole. STUDY DESIGN: A total of 38 patients with MRONJ (age range 55-88, mean age 73 + 8.82 standard deviation) treated with doxycycline first and with metronidazole second were enrolled in this study. Two swabs were taken at the margin of the infected MRONJ lesion after applying pressure on the marginal mucosa, and visible pus was secreted...
December 11, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29325121/plasma-25-hydroxyvitamin-d-and-mortality-in-patients-with-suspected-stable-angina-pectoris
#6
Eirik Degerud, Ottar Nygård, Stefan de Vogel, Rune Hoff, Gard Frodahl Tveitevåg Svingen, Eva Ringdal Pedersen, Dennis Winston Trygve Nilsen, Jan Erik Nordrehaug, Øivind Midttun, Per Magne Ueland, Jutta Dierkes
Context and objective: Vitamin D status may affect cardiovascular disease (CVD) development and survival. We studied the relationship between concentrations of the circulating biomarker 25-hydroxyvitamin D (25OHD) and all-cause and cardiovascular mortality risk. Design, Setting, Participants and main Outcome Measures: 25OHD, the sum of 25-hydroxyvitamin D3 and 25-hydroxyvitamin D2, was analysed in plasma samples from 4114 Caucasian patients with suspected stable angina pectoris, and adjusted for seasonal variation...
January 9, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29322486/dapagliflozin-and-empagliflozin-ameliorate-hepatic-dysfunction-among-chinese-subjects-with-diabetes-in-part-through-glycemic-improvement-a-single-center-retrospective-observational-study
#7
Paul Chi Ho Lee, Yunjuan Gu, Man Yi Yeung, Carol Ho Yi Fong, Yu Cho Woo, Wing Sun Chow, Kathryn Tan, Karen Siu Ling Lam
INTRODUCTION: Sodium-glucose co-transporter 2 inhibitors (SGLT2i) improve hepatic dysfunction, although studies focusing on their underlying mechanisms are lacking, especially ones on dapagliflozin and empagliflozin. Here, we investigated the relationship between amelioration of hepatic dysfunction and improvement in various metabolic parameters among Chinese subjects with type 2 diabetes (T2DM). METHODS: This was a single-center, retrospective, observational study that involved 115 Chinese participants with T2DM treated with either dapagliflozin or empagliflozin for at least 6 months between July 2016 and February 2017...
January 10, 2018: Diabetes Therapy: Research, Treatment and Education of Diabetes and related Disorders
https://www.readbyqxmd.com/read/29318718/regional-cerebral-tissue-oxygen-saturation-changes-following-blood-transfusion-in-neuro-intensive-care-unit-patients%C3%A2-%C3%A2-a-pilot-observational-study
#8
R Muthuchellappan, N A Shaikh, R M Surve, U R S Ganne, M Philip
BACKGROUND: Although central venous oxygen saturation (ScvO2 ) is used to decide on red blood cell (RBC) transfusion, whether its improvement is associated with parallel improvement in cerebral oxygenation is not adequately studied. This study looked at changes in regional cerebral tissue oxygen saturation (rSO2 ) following RBC transfusion in neuro-intensive care unit (ICU) patients. METHODS: In this prospective observational pilot study, rSO2 was measured in adult neuro-ICU patients before RBC transfusion, at the end and at 6, 12, 18 and 24 h after RBC transfusion...
January 10, 2018: Transfusion Medicine
https://www.readbyqxmd.com/read/29317729/zircon-evidence-for-incorporation-of-terrigenous-sediments-into-the-magma-source-of-continental-basalts
#9
Zheng Xu, Yong-Fei Zheng, Zi-Fu Zhao
Crustal components may be incorporated into continental basalts by either shallow contamination or deep mixing. While the former proceeds at crustal depths with common preservation of refractory minerals, the latter occurs at mantle depths with rare survival of relict minerals. Discrimination between the two mechanisms has great bearing to subcontinental mantle geochemistry. Here we report the occurrence of relict zircons in Cenozoic continental basalts from eastern China. A combined study of zircon U-Pb ages and geochemistry indicates that detrital zircons were carried by terrigenous sediments into a subcontinental subduction zone, where the zircon were transferred by fluids into the magma sources of continental basalts...
January 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29317326/study-of-the-upper-airway-of-obstructive-sleep-apnea-patient-using-fluid-structure-interaction
#10
Yang Liu, Jennifer Mitchell, Yitung Chen, Woosoon Yim, Wenxiao Chu, Robert C Wang
Up to 14% of the U.S. population is estimated to have obstructive sleep apnea (OSA), while the outcomes of the treatments have variable results. In the current study, a three-dimensional fluid-structure interaction modeling was applied to simulate the upper airway to identify the precise location, severity, and characteristic of airway collapse. This was accomplished using Simpleware® and ANSYS® software applied to a 3-D rendering of the airway in a real patient with severe OSA. During this simulation, areas which are prone to collapse and precipitate apneic episodes were identified at the tip of the soft palate and the base of the tongue, with intrathoracic pressure as low as -1370 Pa...
January 6, 2018: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/29316754/-detection-of-metals-and-metalloids-in-the-lavage-fluid-of-whole-lung-lavage-of-the-cases-of-pneumoconiosis
#11
K Wen, C G Ding, G Chen, G X Ma, H Q Wang
Objective: To detect of the components and concentration of the metals and metalloids in the lavage fluid of whole-lung lavage (WLL) of the cases of pneumoconiosis, and analyze the characteristics, and explore the method to sample and process the samples of bronchoalveolar lavage fluid (BAL) . Methods: The samples of urine and serum of three cases of pneumoconiosis were collected before WLL, and the samples of BAL were collected during the WLL from the left and right lungs according to the sequence of four pressured gas flow and five negative pressure drainage...
November 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29310563/evaluation-of-factors-associated-with-achievement-of-biventricular-repair-after-bilateral-pulmonary-artery-banding-in-patients-with-interrupted-aortic-arch
#12
Yasuhiro Hirano, Noboru Inamura, Yukiko Kawazu, Hisaaki Aoki, Futoshi Kayatani, Shigemitsu Iwai, Hiroaki Kawata
BACKGROUND: At our institution, we perform bilateral pulmonary artery banding (BPAB) as the first-stage palliation for interrupted aortic arch (IAA) with low birth weight or severe subaortic stenosis (SAS). The present study aimed to identify factors that may influence the decision regarding the type of second-stage operation, that is, univentricular palliation or biventricular repair, in these patients. METHODS: Cardiac catheterization and angiographic data of nine patients with IAA who underwent initial BPAB and subsequent univentricular or biventricular repair were retrospectively analyzed...
January 2018: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/29306816/-you-got-to-love-rosin-solventless-dabs-pure-clean-natural-medicine-exploring-twitter-data-on-emerging-trends-in-rosin-tech-marijuana-concentrates
#13
Francois R Lamy, Raminta Daniulaityte, Mussah Zatreh, Ramzi W Nahhas, Amit Sheth, Silvia S Martins, Edward W Boyer, Robert G Carlson
BACKGROUND: "Rosin tech" is an emerging solventless method consisting in applying moderate heat and constant pressure on marijuana flowers to prepare marijuana concentrates referred to as "rosin." This paper explores rosin concentrate-related Twitter data to describe tweet content and analyze differences in rosin-related tweeting across states with varying cannabis legal statuses. METHOD: English language tweets were collected between March 15, 2015 and April 17, 2017, using Twitter API...
December 27, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29306581/pringle-maneuver-increases-the-risk-of-anastomotic-leakage-after-colonic-resection-in-rats
#14
Boris Jansen-Winkeln, Evangelos Tagkalos, Axel Heimann, Timo Gaiser, Daniela Hirsch, Ines Gockel, Jens Mittler, Hauke Lang, Stefan Heinrich
BACKGROUND: Many centers use the Pringle's maneuver during liver resections. Since this maneuver might impair healing of bowel anastomoses, we evaluated its influence on the healing of colonic anastomosis in rats. METHODS: Male Wistar rats underwent median laparotomy and sigmoid resection with end-to-end anastomosis under inhalation anesthesia. Thereafter, rats received a 25 minutes Pringle's maneuver (PM, group 1) or were kept under anesthesia for the same period of time (group 2)...
January 3, 2018: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/29304162/adrenergic-receptors-inhibit-trpv1-activity-in-the-dorsal-root-ganglion-neurons-of-rats
#15
Yumi Matsushita, Miki Manabe, Naoki Kitamura, Izumi Shibuya
Transient receptor potential vanilloid type 1 (TRPV1) is a polymodal receptor channel that responds to multiple types of stimuli, such as heat, acid, mechanical pressure and some vanilloids. Capsaicin is the most commonly used vanilloid to stimulate TRPV1. TRPV1 channels are expressed in dorsal root ganglion neurons that extend to Aδ- and C-fibers and have a role in the transduction of noxious inputs to the skin into the electrical signals of the sensory nerve. Although noradrenergic nervous systems, including the descending antinociceptive system and the sympathetic nervous system, are known to modulate pain sensation, the functional association between TRPV1 and noradrenaline in primary sensory neurons has rarely been examined...
2018: PloS One
https://www.readbyqxmd.com/read/29303439/value-of-whole-body-low-dose-computed-tomography-in-patients-with-ventriculoperitoneal-shunts-a-retrospective-study
#16
Andrej Pala, Fadi Awad, Michael Braun, Michal Hlavac, Arthur Wunderlich, Bernd Schmitz, Christian Rainer Wirtz, Jan Coburger
OBJECTIVE The gold standard for evaluation of ventriculoperitoneal (VP) shunt position, dislocation, or disconnection is conventional radiography. Yet, assessment with this modality can be challenging because of low image quality and can result in repetitive radiation exposure with high fluctuation in the radiation dose. Recently, CT-based radiation doses have been significantly reduced by using low-dose protocols. Thus, whole-body low-dose CT (LDCT) has become applicable for routine use in VP shunt evaluation...
January 5, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29301520/sglt-2-inhibition-with-dapagliflozin-reduces-tissue-sodium-content-a-randomised-controlled-trial
#17
M V Karg, A Bosch, D Kannenkeril, K Striepe, C Ott, M P Schneider, F Boemke-Zelch, P Linz, A M Nagel, J Titze, M Uder, R E Schmieder
BACKGROUND AND AIMS: Sodium tissue content by 23Na magnetic resonance imaging (Na-MRI) has been validated in experimental and human studies. SGLT-2 inhibition blocks the reabsorption of glucose and of sodium in the proximal tubular cells in a 1:1 fashion. We hypothesized that SGLT-2 inhibition in patients with type 2 diabetes characterized by sodium retention leads to decreased tissue sodium content due to its pharmacological action. MATERIALS AND METHODS: In a prospective double blind, placebo controlled, cross-over trial 59 patients (61 ± 7...
January 4, 2018: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29300351/simulation-study-on-jet-formability-and-damage-characteristics-of-a-low-density-material-liner
#18
Liangliang Ding, Wenhui Tang, Xianwen Ran
The shaped charge tandem warhead is an effective weapon against the ERA (explosive reactive armor). Whether the pre-warhead can reliably initiate the ERA directly determines the entire performance of the tandem warhead. The existing shaped charge pre-warhead mostly adopts a metal shaped jet, which effectively initiates the ERA, but interferes the main shaped jet. This article, on the other hand, explores the possibility of producing a pre-warhead using a low-density material as the liner. The nonlinear dynamic analysis software Autodyn-2D is used to simulate and compare three kinds of low-density shaped jets, including floatglass, Lucite, and Plexiglas, to the copper shaped jet in the effectiveness of impacting ERA...
January 4, 2018: Materials
https://www.readbyqxmd.com/read/29300244/sympathetic-and-baroreflex-abnormalities-in-the-uncomplicated-prediabetic-state
#19
Raffaella Dell'Oro, Fosca Quarti Trevano, Pierluigi Gamba, Claudia Ciuffarella, Gino Seravalle, Giuseppe Mancia, Guido Grassi
BACKGROUND: Neurogenic abnormalities characterize overt diabetic state. However, how early is their appearance in the clinical course of the disease is unclear. METHODS: In 26 normotensive and normoweight prediabetic patients, aged 45.2 ± 3.2 years (mean ± SEM), we assessed efferent postganglionic muscle sympathetic nerve traffic (MSNA, microneurography), spontaneous baroreflex sensitivity, and a number of hemodynamic and metabolic variables, including homeostatic model assessment (HOMA) index...
January 2, 2018: Journal of Hypertension
https://www.readbyqxmd.com/read/29298183/an-integrated-career-coaching-and-time-banking-system-promoting-flexibility-wellness-and-success-a-pilot-program-at-stanford-university-school-of-medicine
#20
Magali Fassiotto, Caroline Simard, Christy Sandborg, Hannah Valantine, Jennifer Raymond
Faculty in academic medicine experience multiple demands on their time at work and at home, which can become a source of stress and dissatisfaction, compromising success. A taskforce convened to diagnose the state of work-life flexibility at Stanford University School of Medicine uncovered two major sources of conflict for faculty: work-life conflict, caused by juggling demands of career and home, and work-work conflict, caused by competing priorities of the tripartite research, teaching, and clinical mission of an academic medical center combined with service and administrative tasks...
January 2, 2018: Academic Medicine: Journal of the Association of American Medical Colleges
keyword
keyword
48600
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"