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https://www.readbyqxmd.com/read/28429632/comparison-of-piezoresistive-sensor-to-picopress%C3%A2-in-in-vitro-interface-pressure-measurement
#1
Yung-Wei Chi, Kuo-Hao Tseng, Ruya Li, Tingrui Pan
Objective Interface pressure, the sine qua non for compression therapy, is rarely measured in clinical practice and scientific research. The goal of this study aimed to compare and examine the accuracy between a commercially available piezoresistive sensor and PicoPress® (Microlab, Padua, Italy) using the cylinder cuff model to measure in-vitro interface pressure. Method Ten piezoresistive sensors were calibrated using the National Institute of Standard and Technology certified manometer, and compared to PicoPress® using cylinder cuff model from 20 to 120 mmHg...
January 1, 2017: Phlebology
https://www.readbyqxmd.com/read/28418753/intraosseous-pressure-monitoring-in-healthy-volunteers
#2
Joshua G Salzman, Nicholas M Loken, Sandi S Wewerka, Aaron M Burnett, Abigail E Zagar, Kent R Griffith, Peter L Bliss, Bjorn K Peterson, Christopher J Ward, Ralph J Frascone
STUDY OBJECTIVE: Invasively monitoring blood pressure through the IO device has not been thoroughly demonstrated. This study attempted to establish baseline values of IO pressure in a healthy human population. METHODS: This was a prospective, healthy volunteer, observational study. Participants had two IO devices placed (humerus and tibia), and participant IO pressures, vital signs, and pain scores were monitored for up to 60 minutes. Participants were contacted at 24-hours and 7 days post-testing to assess for adverse events...
April 18, 2017: Prehospital Emergency Care
https://www.readbyqxmd.com/read/28416836/-comparison-between-flexible-laryngeal-mask-airway-and-reinforced-tracheal-tube-used-for-lumbar-vertebral-surgery-in-prone-position
#3
Y L Zheng, W F Song, D X Wang
OBJECTIVE: To estimate the safety and feasibility of flexible laryngeal mask airway (FLMA) for lumbar vertebral surgery in prone position. METHODS: In the study, 120 adult patients scheduled for lumbar vertebral surgery under intravenous general anesthesia were divided into group FLMA and reinforced tracheal tube (RTT) group at random. Heart rate (HR), systolic blood pressure (SBP) and diastolic blood pressure (DBP) were recorded at the beginning of anesthesia induction (T0) and on the time of artificial airway intubation (T1), 1 min after intubation (T2), extubation (T3), 1 min after extubation (T4) as well...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28410880/the-effect-of-user-experience-and-inflation-technique-on-endotracheal-tube-cuff-pressure-using-a-feline-airway-simulator
#4
Donna M White, José I Redondo, Alastair R Mair, Fernando Martinez-Taboada
OBJECTIVE: The effect of user experience and inflation technique on endotracheal tube cuff pressure using a feline airway simulator. STUDY DESIGN: Prospective, experimental clinical study. METHODS: Participants included veterinary students at the beginning (group S1) and end (group S2) of their 2-week anaesthesia rotation and veterinary anaesthetists (group A). The feline airway simulator was designed to simulate an average size feline trachea, intubated with a 4...
February 24, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28409833/dietary-salt-blunts-vasodilation-by-stimulating-epithelial-sodium-channels-in-endothelial-cells-from-salt-sensitive-rats
#5
Zi-Rui Wang, Hui-Bin Liu, Ying-Ying Sun, Qing-Qing Hu, Yu-Xia Li, Wei-Wan Zheng, Chang-Jiang Yu, Xin-Yuan Li, Ming-Ming Wu, Bin-Lin Song, Jian-Jun Mu, Zu-Yi Yuan, Zhi-Ren Zhang, He-Ping Ma
BACKGROUND AND PURPOSE: Our recent studies show that the reduced activity of epithelial sodium channels (ENaC) in endothelial cells accounts for the adaptation of vasculature to salt in Sprague-Dawley (SD) rats. The present study examines a hypothesis that enhanced ENaC activity mediates the loss of vasorelaxation in Dahl salt-sensitive (SS) rats. EXPERIMENTAL APPROACH: We used the cell-attached patch-clamp technique to record ENaC activity in split-open mesenteric arteries...
April 13, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28405997/tracheoesophageal-fistula-following-endotracheal-intubation-for-organophosphorus-poisoning
#6
Shailaja V Rao, Ajay K Boralkar, Prabhakar S Jirvankar, Mangala V Sonavani, Varsha Rotte Kaginalkar, Chimu Chinte
Tracheoesophageal fistula (TEF) is an abnormal communication between the trachea and esophagus. Iatrogenic TEF can be due to endotracheal intubation, rigid bronchoscopy or tracheostomy. Tracheostomy tube cuff volumes and pressures require constant monitoring to avoid tracheal injury. Acquired TEF which occurs after prolonged intubation, usually develops after 15-200 days of mechanical ventilation. We report a case of a large TEF secondary to endotracheal intubation for organophosphorus poison-induced respiratory failure...
December 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28402512/defective-trophoblast-invasion-underlies-fetal-growth-restriction-and-pre-eclampsia-like-symptoms-in-the-stroke-prone-spontaneously-hypertensive-rat
#7
G Barrientos, M Pussetto, M Rose, A C Staff, S M Blois, J E Toblli
STUDY QUESTION: What is the impact of chronic hypertension on placental development, fetal growth and maternal outcome in the stroke-prone spontaneously hypertensive rat (SHRSP)? SUMMARY ANSWER: SHRSP showed an impaired remodeling of the spiral arteries and abnormal pattern of trophoblast invasion during placentation, which were associated with subsequent maternal glomerular injury and increased baseline hypertension as well as placental insufficiency and asymmetric fetal growth restriction...
April 11, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28402045/brachial-blood-flow-under-relative-levels-of-blood-flow-restriction-is-decreased-in-a-nonlinear-fashion
#8
J Grant Mouser, Carl J Ade, Christopher D Black, Debra A Bemben, Michael G Bemben
INTRODUCTION: Blood flow restriction (BFR), the application of external pressure to occlude venous return and restrict arterial inflow, has been shown to increase muscular size and strength when combined with low-load resistance exercise. BFR in the research setting uses a wide range of pressures, applying a pressure based upon an individual's systolic pressure or a percentage of occlusion pressure; not a directly determined reduction in blood flow. The relationship between relative pressure and blood flow has not been established...
April 12, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28401075/repeated-remote-ischemic-conditioning-effect-on-ankle-brachial-index-in-diabetic-patients-a-randomized-control-trial
#9
Najmeh Shahvazian, Mansour Rafiee, Masoud Rahmanian, Seyed Kazem Razavi-Ratki, Mohammad Hadi Farahzadi
BACKGROUND: Remote ischemic preconditioning (RIPC) is a phenomenon where a short period of ischemia in one organ protects against further ischemia in the other organs. We hypothesized that RIPC occurring in diabetic patients with ankle brachial index (ABI) between 0.70 and 0.90 were included with peripheral arterial disease, would make the better coronary flow resulted in the increasing ABI. MATERIALS AND METHODS: This randomized clinical trial study was done in the Afshar Cardiovascular Hospital in Yazd between 2013 and 2014...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28397384/characteristics-and-effectiveness-of-vasodilatory-and-pressor-compensation-for-reduced-relaxation-time-during-rhythmic-forearm-contractions
#10
Robert F Bentley, Veronica J Poitras, Terrence Hong, Michael E Tschakovsky
During muscle contraction in rhythmic exercise muscle blood flow is significantly impeded by microvascular compression. The purpose of this study was to establish the nature and magnitude of vasodilatory and/or pressor compensatory responses during forearm exercise in the face of an increased duration of mechanical microvascular compression, and whether the effectiveness of such compensation was exercise intensity dependent. Seven healthy males (21.0 ± 1.8 yrs) completed progressive forearm exercise (24...
April 10, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28396934/clinical-impact-of-stent-implantation-for-coarctation-of-the-aorta-with-associated-hypoplasia-of-the-transverse-aortic-arch
#11
W H Lu, Chun-Po Steve Fan, Rajiv Chaturvedi, Kyong-Jin Lee, Cedric Manlhiot, Lee Benson
The aim of this study was to explore the clinical impact of transverse aortic arch hypoplasia (TAH) after stent implementation for isthmal coarctation of the aorta (CoA). From a retrospective chart review, 51 children (median age 11.1 years) were identified who had TAH and a CoA stent implanted between 10/1995 and 4/2015. Arm-leg cuff blood pressure measurements, echocardiographic arch imaging, and 24-h ambulatory blood pressure monitoring, prior to and after stent implantation, were reviewed. At catheterization, peak systolic gradients across the CoA's were 25 mmHg before and 4 mmHg after stent implantation...
April 10, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28393555/examining-the-relationship-between-endogenous-pain-modulation-capacity-and-endurance-exercise-performance
#12
Andrew Flood, Gordon Waddington, Stuart Cathcart
The aim of the current study was to examine the relationship between pain modulatory capacity and endurance exercise performance. Twenty-seven recreationally active males between 18 and 35 years of age participated in the study. Pain modulation was assessed by examining the inhibitory effect of a noxious conditioning stimulus (cuff occlusion) on the perceived intensity of a second noxious stimulus (pressure pain threshold). Participants completed two, maximal voluntary contractions followed by a submaximal endurance time task...
April 10, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28392636/subcutaneous-emphysema-after-shoulder-arthroscopy-a-case-report-and-review-of-the-literature
#13
Els S M Van Nieuwenhuyse, Bart Kerens, Jan Moens, Gunther Kiekens
INTRODUCTION: Subcutaneous emphysema (SE) and pneumomediastinum are rare complications after shoulder arthroscopy. CASE REPORT: A case is presented in which SE was seen after arthroscopic cuff repair. DISCUSSION: A review of current literature shows that SE after shoulder arthroscopy can be due to loco-regional anaesthesiology, endotracheal intubation, gas-forming infection, postoperative mobilisation or the arthroscopic procedure itself. During the procedure air can be sucked into the subacromial space due to suction and subsequently transferred into subcutaneous tissue by the positive pressure of the infusion pump...
June 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28389287/the-effect-of-revascularization-on-the-hemodynamic-profile-of-patients-with-infrarenal-aortic-occlusion
#14
Christos Argyriou, Efstratios Georgakarakos, George S Georgiadis, Nikolaos Schoretsanitis, Miltos K Lazarides
OBJECTIVE: Patients undergoing revascularization for infrarenal aortic occlusion (IAO) have been reported to present improved survival rates compared to those treated conservatively. Aim of this study was to investigate the hemodynamic changes induced after revascularization for IAO, as expressed with pulse wave velocity (PWV), Augmentation Index (AIx), Augmentation Pressure (AP) and pulse wave reflection coefficient (RC). MATERIALS AND METHODS: Twelve patients underwent revascularization (9 aortobifemoral / aortobiiliac bypasses, 2 primary iliac stenting and 1 hybrid procedure of unilateral aortoiliac stenting and crossover bypass)...
April 4, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28382958/role-of-nebivolol-in-the-control-and-management-of-central-aortic-blood-pressure-in-hypertensive-patients
#15
REVIEW
C Borghi, M C Acelajado, Y Gupta, S Jain
Measurement of blood pressure (BP) using a brachial cuff sphygmomanometer is universally accepted for the diagnosis of hypertension and prediction of cardiovascular diseases. However, brachial systolic BP does not represent actual systolic BP in the central arteries which encounter cardiac load directly. Due to wave amplification from central to peripheral arteries, a significant difference exists between the two. Central BP measurements also account for arterial stiffness, vessel branching and vascular mechanics, unlike brachial BP...
April 6, 2017: Journal of Human Hypertension
https://www.readbyqxmd.com/read/28381456/muscle-mechanoreflex-activation-via-passive-calf-stretch-causes-renal-vasoconstriction-in-healthy-humans
#16
Rachel C Drew, Cheryl A Blaha, Michael D Herr, Ruda Cui, Lawrence I Sinoway
Reflex renal vasoconstriction occurs during exercise, and renal vasoconstriction in response to upper-limb muscle mechanoreflex activation has been documented. However, the renal vasoconstrictor response to muscle mechanoreflex activation originating from lower limbs, with and without local metabolite accumulation, has not been assessed. Eleven healthy young subjects (26 ± 1y; 5 men) underwent two trials involving 3-min passive calf muscle stretch (mechanoreflex) during 7.5-min lower-limb circulatory occlusion (CO)...
April 5, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28376377/combined-oral-contraceptive-and-nitric-oxide-synthesis-inhibition-synergistically-causes-cardiac-hypertrophy-and-exacerbates-insulin-resistance-in-female-rats
#17
Lawrence A Olatunji, Kehinde S Olaniyi, Taofeek O Usman, Bilikis A Abolarinwa, Caleb J Achile, In-Kyeom Kim
Combined oral contraceptive (COC) use or inhibition of nitric oxide (NO) synthesis has been shown to cause hypertension and insulin resistance. However, the concomitant effects of COC and NO deficiency on the heart and glucose regulation are not well known. We therefore hypothesized that COC treatment during NO deficiency would lead to the development of cardiac hypertrophy that is associated with aggravated glucose deregulation, pro-inflammatory and pro-fibrotic biomarkers. Eight-week-old female Wistar rats were randomly allotted into control, NO deficient (N(G)-nitro-l-arginine methyl ester: L-NAME; 20...
March 20, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28362645/validation-of-the-a-d-um-201-device-for-office-blood-pressure-measurement-according-to-the-european-society-of-hypertension-international-protocol-revision-2010
#18
Claudio Fania, Federica Albertini, Paolo Palatini
The aim of this study was to determine the accuracy of the A&D UM-201 device coupled to several cuffs for different arm sizes for office blood pressure (BP) measurement according to the International Protocol of the European Society of Hypertension. Evaluation was carried out in 33 individuals. The mean age of the individuals was 59.3±13.2 years, systolic BP was 145.4±20.6 mmHg (range: 109-186 mmHg), diastolic BP was 87.3±18.0 mmHg (range: 50-124 mmHg), and arm circumference was 30.4±4.2 cm (range: 23-39 cm)...
March 30, 2017: Blood Pressure Monitoring
https://www.readbyqxmd.com/read/28361570/the-acute-muscular-response-to-two-distinct-blood-flow-restriction-protocols
#19
S J Dankel, S L Buckner, B R Counts, M B Jessee, J G Mouser, K T Mattocks, G C Laurentino, T Abe, J P Loenneke
The purpose of this study was to determine acute physiological and perceptual responses to two commonly implemented blood flow restriction protocols. Using a within-subject design, 15 participants (age ∼25) performed four sets of unilateral elbow flexion with each arm. One arm exercised using a 3-cm elastic cuff inflated to 160 mmHg, whereas the other arm exercised using a 5-cm nylon cuff inflated to 40% of the individual's arterial occlusion pressure. While both protocols elicited increases in acute muscle thickness [pre: 4...
March 1, 2017: Physiology International
https://www.readbyqxmd.com/read/28358175/the-safety-and-efficacy-of-the-use-of-the-flexible-laryngeal-mask-airway-with-positive-pressure-ventilation-in-elective-ent-surgery-a-15-year-retrospective-single-center-study
#20
Vladimir Nekhendzy, Vijay K Ramaiah, Jeremy Collins, Hendrikus J Lemmens, Sam P Most
BACKGROUND: The use of flexible laryngeal mask airway (FLMA) in elective ear, nose and throat (ENT) surgery offers significant advantages, but is frequently considered inferior to tracheal intubation (TI) for ventilation and airway protection. We investigated the safety and success rate of intraoperative FLMA use with positive pressure ventilation (PPV), and the factors responsible for FLMA failure. METHODS: A 15-year single center retrospective study. FLMA failure was defined as the need for FLMA removal and TI, either during induction (primary failure), or after turning the patient over to the surgeon (secondary failure)...
March 28, 2017: Minerva Anestesiologica
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