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https://www.readbyqxmd.com/read/29679768/comparison-of-proaqt-pulsioflex%C3%A2-and-oesophageal-doppler-for-intraoperative-haemodynamic-monitoring-during-intermediate-risk-abdominal-surgery
#1
Grégoire Weil, Cyrus Motamed, Alexandre Eghiaian, Xavier Monnet, Stéphanie Suria
OBJECTIVE: To compare cardiac index (CI) between Proaqt/PulsioFlex® and esophageal Doppler (OD) and the ability of the PulsioFlex® to track CI changes induced by fluid challenge and secondly to assess the impact of the time interval between two auto-calibrations of PulsioFlex® on the accuracy of the measured CI. METHODS: In a single hospital, 49 intermediate-risk oncologic abdominal surgery patients were included in an observational study. We measured the cardiac Index (CI) provided by OD and by the Proaqt/PulsioFlex® before and after internal calibration, which were performed randomly at specific intervals after the initial one (30, 60, 90 and 120min)...
April 18, 2018: Anaesthesia, Critical Care & Pain Medicine
https://www.readbyqxmd.com/read/29679540/the-free-energy-of-biomembrane-and-nerve-excitation-and-the-role-of-anesthetics
#2
Tian Wang, Tea Mužić, Andrew D Jackson, Thomas Heimburg
In the electromechanical theory of nerve stimulation, the nerve impulse consists of a traveling region of solid membrane in a liquid environment. Therefore, the free energy necessary to stimulate a pulse is directly related to the free energy difference necessary to induce a phase transition in the nerve membrane. It is a function of temperature and pressure, and it is sensitively dependent on the presence of anesthetics which lower melting transitions. We investigate the free energy difference of solid and liquid membrane phases under the influence of anesthetics...
April 18, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29677212/pulsatile-operation-of-a-continuous-flow-right-ventricular-assist-device-rvad-to-improve-vascular-pulsatility
#3
Boon C Ng, Matthias Kleinheyer, Peter A Smith, Daniel Timms, William E Cohn, Einly Lim
Despite the widespread acceptance of rotary blood pump (RBP) in clinical use over the past decades, the diminished flow pulsatility generated by a fixed speed RBP has been regarded as a potential factor that may lead to adverse events such as vasculature stiffening and hemorrhagic strokes. In this study, we investigate the feasibility of generating physiological pulse pressure in the pulmonary circulation by modulating the speed of a right ventricular assist device (RVAD) in a mock circulation loop. A rectangular pulse profile with predetermined pulse width has been implemented as the pump speed pattern with two different phase shifts (0% and 50%) with respect to the ventricular contraction...
2018: PloS One
https://www.readbyqxmd.com/read/29677054/effects-of-acute-aerobic-exercise-on-arterial-stiffness-and-cerebrovascular-pulsatility-in-adults-with-and-without-hypertension
#4
Wesley K Lefferts, Jacob P DeBlois, Candace N Receno, Tiago V Barreira, Tom D Brutsaert, Robert L Carhart, Kevin S Heffernan
OBJECTIVES: Stiffer central arteries, as seen in hypertension (HTN), foster transmission of pulsatile hemodynamics into fragile cerebral vessels. Aerobic exercise is recommended for adults with HTN, but its effects on arterial stiffness and pulsatility in this group are unclear. This study sought to investigate the effect of acute aerobic exercise on arterial stiffness and cerebrovascular pulsatility in 30 adults with treated HTN and 30 age, sex, and BMI-matched adults without HTN (56 ± 6 years, BMI 28...
April 19, 2018: Journal of Hypertension
https://www.readbyqxmd.com/read/29677053/safety-profile-of-baroreflex-activation-therapy-neo-in-patients-with-resistant-hypertension
#5
Manuel Wallbach, Enrico Böhning, Luca-Yves Lehnig, Charlotte Schroer, Gerhard Anton Müller, Rolf Wachter, Stephan Lüders, Dieter Zenker, Michael Johann Koziolek
OBJECTIVE: Unlike safety data of baroreflex activation therapy device (Rheos), only few data of the currently used second device (Barostim neo) are available and little is reported about common side effects. METHODS: We prospectively analyzed patients with resistant hypertension treated with Barostim neo. A standardized interview regarding side effects of the therapy was performed in routine follow-up visits after device implantation in 42 patients to determine adverse events staged into three degrees...
April 19, 2018: Journal of Hypertension
https://www.readbyqxmd.com/read/29675274/efficacy-and-safety-of-switching-prostaglandin-analog-monotherapy-to-tafluprost-timolol-fixed-combination-therapy
#6
Kazuyoshi Kitamura, Tatsuya Chiba, Fumihiko Mabuchi, Kiyotaka Ishijima, Shu Omoto, Fumiko Kashiwagi, Takashi Godo, Satoshi Kogure, Teruhiko Goto, Takashi Shibuya, Jhoji Tanabe, Shigeo Tsukahara, Tadaharu Tsuchiya, Toyoaki Tsumura, Takaharu Tokunaga, Osamu Hosaka, Tetsunori Saito, Kenji Kashiwagi
Purpose: To assess the efficacy and safety of switching from prostaglandin analog (PGA) monotherapy to tafluprost/timolol fixed-combination (Taf/Tim) therapy. Subjects and Methods: Patients with primary open-angle glaucoma, normal-tension glaucoma, or ocular hypertension who had received PGA monotherapy for at least 3 months were enrolled. Patients were examined at 1, 2, and 3 months after changing therapies. Subsequently, the patients were returned to PGA monotherapy...
2018: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29672043/chemical-modifications-of-lipids-and-proteins-by-non-thermal-food-processing-technologies
#7
Juan Perez, Clementine Charoux, P J Cullen, Brijesh K Tiwari
A range of nonthermal techniques have demonstrated process efficacy in ensuring product safety, extension of shelf-life and in general a retention of key quality attributes. However, various physical, chemical and biochemical effects of nonthermal techniques on macro and micro nutrients are evident, leading to both desirable and undesirable changes in food products. The objective of this review is to outline the effects of non-thermal techniques on food chemistry and the associated degradation mechanisms with the treatment of foods...
April 19, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29671421/voltage-and-partial-pressure-dependent-defect-chemistry-in-la-sr-feo-3-%C3%AE-thin-films-investigated-by-chemical-capacitance-measurements
#8
Alexander Schmid, Ghislain M Rupp, Jürgen Fleig
La0.6Sr0.4FeO3-δ (LSF) thin films of different thickness were prepared by pulsed laser deposition on yttria stabilized zirconia (YSZ) and characterized by using three electrode impedance spectroscopy. Electrochemical film capacitance was analyzed in relation to oxygen partial pressure (0.25 mbar to 1 bar), DC polarization (0 m to -600 m) and temperature (500 to 650 °C). For most measurement parameters, the chemical bulk capacitance dominates the overall capacitive properties and the corresponding defect chemical state depends solely on the oxygen chemical potential inside the film, independent of atmospheric oxygen pressure and DC polarization...
April 19, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29669870/arterial-stiffness-is-associated-with-basal-ganglia-enlarged-perivascular-spaces-and-cerebral-small-vessel-disease-load
#9
Iolanda Riba-Llena, Joan Jiménez-Balado, Xavier Castañé, Anna Girona, Antonio López-Rueda, Xavier Mundet, Carmen I Jarca, José Álvarez-Sabin, Joan Montaner, Pilar Delgado
BACKGROUND AND PURPOSE: We assessed whether the load of cerebral small vessel disease (cSVD) and its individual markers, including lacunes, white matter hyperintensities, microbleeds, and enlarged perivascular spaces (EPVS), are associated with arterial stiffness. METHODS: We evaluated cSVD markers in a cohort of 782 hypertensive individuals without history of stroke or dementia. The load of the disease was calculated using an ordinal scale ranging from 0 to 4 (1 point was given for each of the 4 markers examined)...
April 18, 2018: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29669772/a-case-of-h3n2-complicated-by-acute-kidney-injury-secondary-to-rhabdomyolysis
#10
Sriram Gonakoti, Janak Bahirwani, Raja Naga Mahesh Maddala, Sudha Vidyasagar
H3N2 was first detected in July 2011 in the USA. It is responsible for sporadic cases of influenza and localised outbreaks and has not yet taken over on an epidemic or pandemic scale. An 84-year-old man presented with a dry cough, fever and myalgia for 3 days. On examination, he had a pulse of 98 bpm and blood pressure of 124/88 mm Hg. The patient was tachypnoeic, SpO2 was 90%. Auscultation revealed bilateral diffuse wheeze and crackles. He had generalised muscle tenderness on examination. On admission, creatinine was 1...
April 18, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29668699/brief-exposure-to-swedish-snus-causes-divergent-vascular-responses-in-healthy-male-and-female-volunteers
#11
Lukasz Antoniewicz, Mirza Novo, Jenny Bosson, Magnus Lundbäck
INTRODUCTION: The use of Swedish oral moist snuff, known as snus, has for a long time been limited to the Scandinavian countries. With declining cigarette sales in the western world, tobacco companies have looked to the development of alternative tobacco products. In 2006 snus products were launched in the US. Even though several studies have demonstrated negative health effects, snus is often depicted as harmless. The aim of the present study was to investigate acute vascular effects of snus as measured by arterial stiffness as well as blood pressure and heart rate...
2018: PloS One
https://www.readbyqxmd.com/read/29668634/spironolactone-is-superior-to-hydrochlorothiazide-for-blood-pressure-control-and-arterial-stiffness-improvement-a-prospective-study
#12
Yan Liu, Siping Dai, Lin Liu, Huocheng Liao, Chun Xiao
The present study is to investigate whether spironolactone is better than hydrochlorothiazide (HCTZ) for blood pressure (BP) control and arterial stiffness improvement. Five-hundred-sixty-six uncontrolled hypertensive patients with 2 different classes of antihypertensive medications treatment were enrolled. Spironolactone or HCTZ was randomly prescribed for 4 weeks. Carotid-femoral pulse wave velocity (cf-PWV) was measured at baseline and after 4 weeks' of spironolactone or HCTZ treatment. Between-group differences were evaluated, and logistic regression analysis was performed to evaluate the association of cf-PWV increase and incident resistant hypertension...
April 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29668601/efficacy-and-safety-of-once-weekly-semaglutide-for-the-treatment-of-type-2-diabetes-protocol-for-a-systematic-review-and-meta-analysis
#13
Fang-Hong Shi, Hao Li, Min Cui, Zai-Li Zhang, Zhi-Chun Gu, Xiao-Yan Liu
BACKGROUND: It is a great challenge for type 2 diabetes mellitus (T2DM) patients to maintain optimal glycemia, control body weight, blood pressure, and avoiding hypoglycemia. Glucagon-like peptide-1 (GLP-1) receptor agonists (GLP-1 RAs) can stimulate glucose-dependent insulin while inhibit glucagon secretion, delay gastric emptying, reduce appetite, and energy intake. Recently, a new once-weekly GLP-1 RAs, semaglutide, has been registered to treat patients with T2DM. METHODS: We will search Medline, Embase, Cochrane Library, and the ClinicalTrials...
April 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29665683/monitoring-molecular-transport-across-colloidal-membranes
#14
Emilia Victoria Silletta, Zhe Xu, Mena Youssef, Stefano Sacanna, Alexej Jerschow
The controlled shaping and surface functionalization of colloidal particles has provided opportunities for the development of new materials and responsive particles. The possibility of creating hollow particles with semi-permeable walls allows modulating molecular transport properties on colloidal length scales. While shapes and sizes can typically be observed by optical means, the underlying chemical and physical properties are often invisible. Here, we present measurements of cross-membrane transport via pulsed field gradient NMR in packings of hollow colloidal particles...
April 17, 2018: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29665536/the-effect-of-percutaneous-transluminal-angioplasty-of-superficial-femoral-artery-on-pulse-wave-features
#15
Mikko Peltokangas, Velipekka Suominen, Damir Vakhitov, Jarmo Verho, Janne Korhonen, Jukka Lekkala, Antti Vehkaoja, Niku Oksala
We aimed to analyze the effects of percutaneous transluminal angioplasty (PTA) of the superficial femoral artery (SFA) on arterial pulse waves (PWs). Altogether 24 subjects i.e. 48 lower limbs were examined including 26 treated lower limbs having abnormal ankle-to-brachial pressure index (ABI) (ABI<0.9 or ABI>1.3) and 22 non-treated lower limbs. The measurements were conducted in pre-, peri- and post-treatment phases as well as in follow-up visit after 1 month. Both ABI and toe pressures measured by standard equipment were used as reference values...
April 6, 2018: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29664810/childhood-pulse-pressure-predicts-subclinical-vascular-damage-in-adulthood-the-beijing-blood-pressure-cohort-study
#16
Dongqing Hou, Yinkun Yan, Junting Liu, Xiaoyuan Zhao, Hong Cheng, Jie Mi
OBJECTIVE: We aimed to investigate associations of childhood pulse pressure (PP) and change in PP status with adult subclinical vascular damage. METHODS: Data were obtained from a population-based cohort of children aged 6-18 years started in 1987. The study constituted 1254 participants who were followed up in 2010-2011 (aged 28-42 years). Carotid arteriosclerosis and aortic stiffness were assessed by carotid intima-media thickness (IMT) and brachial-ankle pulse wave velocity (PWV), respectively...
April 16, 2018: Journal of Hypertension
https://www.readbyqxmd.com/read/29664405/longitudinal-assessment-of-vascular-function-with-sunitinib-in-patients-with-metastatic-renal-cell-carcinoma
#17
Anna B Catino, Rebecca A Hubbard, Julio A Chirinos, Ray Townsend, Stephen Keefe, Naomi B Haas, Igor Puzanov, James C Fang, Neeraj Agarwal, David Hyman, Amanda M Smith, Mary Gordon, Theodore Plappert, Virginia Englefield, Vivek Narayan, Steven Ewer, Chantal ElAmm, Daniel Lenihan, Bonnie Ky
BACKGROUND: Sunitinib, used widely in metastatic renal cell carcinoma, can result in hypertension, left ventricular dysfunction, and heart failure. However, the relationships between vascular function and cardiac dysfunction with sunitinib are poorly understood. METHODS AND RESULTS: In a multicenter prospective study of 84 metastatic renal cell carcinoma patients, echocardiography, arterial tonometry, and BNP (B-type natriuretic peptide) measures were performed at baseline and at 3...
March 2018: Circulation. Heart Failure
https://www.readbyqxmd.com/read/29662306/short-term-vascular-hemodynamic-responses-to-isometric-exercise-in-young-adults-and-in-the-elderly
#18
Renee Hartog, Davide Bolignano, Eric Sijbrands, Giacomo Pucci, Francesco Mattace-Raso
Background: Vascular aging is known to induce progressive stiffening of the large elastic arteries, altering vascular hemodynamics under both rest and stress conditions. In this study, we aimed to investigate changes in vascular hemodynamics in response to isometric handgrip exercise across ages. Participants and methods: We included 62 participants, who were divided into three age categories: 20-40 (n=22), 41-60 (n=20), and 61-80 (n=20) years. Vascular hemodynamics were measured using the Mobil-o-Graph® based on the pulsatile pressure changes in the brachial artery...
2018: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/29661678/effect-of-predosing-versus-slow-administration-of-propofol-on-the-dose-required-for-anaesthetic-induction-and-on-physiologic-variables-in-healthy-dogs
#19
Mathieu Raillard, Emma J Love, Pamela J Murison
OBJECTIVE: To investigate the effects of the timing of propofol administration on the dose required for induction of anaesthesia and commonly measured physiological effects. STUDY DESIGN: Randomized, investigator-blinded clinical study. ANIMALS: A group of 32 healthy dogs aged 6-144 months and weighing 3.5-47.2 kg. METHODS: Premedication was intramuscular acepromazine (0.025 mg kg-1 ) and methadone (0.25 mg kg-1 )...
March 6, 2018: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/29661432/evaluation-of-lung-function-in-liver-transplant-candidates
#20
L Roque, A K Sankarankutty, O C Silva, E D Mente
INTRODUCTION: A wide variety of pulmonary conditions are found in cirrhotic patients and may compromise the pleura, diaphragm, parenchyma, and pulmonary vasculature, influencing the results of liver transplantation. OBJECTIVE: To evaluate the pulmonary function (lung capacities, volumes, and gasometric study) of patients with liver cirrhosis awaiting liver transplantation. PATIENTS AND METHODS: Cirrhotic patients, subdivided into 3 groups stratified by liver disease severity using the Child-Pugh-Turcotte score, were compared with a control group of healthy volunteers...
April 2018: Transplantation Proceedings
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