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https://www.readbyqxmd.com/read/28802868/development-and-implementation-of-an-ultrasound-guided-peripheral-intravenous-catheter-program-for-emergency-nurses
#1
Courtney Edwards, Jodi Jones
PROBLEM: Emergency medical care often necessitates placement of peripheral intravenous (PIV) catheters. When traditional methods for obtaining PIV access are not successful, ultrasound guidance is a rescue technique for peripheral vascular placement that improves the quality of patient care. METHODS: The aim of this training program was to develop a process where emergency nurses would be competent to perform ultrasound guided PIV to improve the quality of patient care delivered while reducing throughput time...
August 9, 2017: Journal of Emergency Nursing: JEN: Official Publication of the Emergency Department Nurses Association
https://www.readbyqxmd.com/read/28794685/a-posteriori-accuracy-estimation-of-ultrasonic-vector-flow-mapping-vfm
#2
Tomohiko Tanaka, Rei Asami, Ken-Ichi Kawabata, Kunio Hashiba, Takashi Okada, Tomohide Nishiyama
ABSTRACT: A novel method, called a posteriori "VFM accuracy estimation" (VAE), for resolving an intrinsic VFM problem is proposed. The problem is that VFM uncertainty can easily vary according to blood flows through an echocardiographic imaged plane (i.e., "through-plane" flows), and it is unknown. Knowing the VFM uncertainty for each patient will make it possible to refine the quality of VFM-based diagnosis. In the present study, VAE was derived on the basis of an error-propagation analysis and a statistical analysis...
2017: Journal of Visualization
https://www.readbyqxmd.com/read/28782404/does-first-trimester-nuchal-cord-affect-the-blood-flow-in-the-ductus-venosus-a-prospective-observational-study
#3
S Petousis, C Margioula-Siarkou, A Mamopoulos, A Sotiriadis, D Rousso, A Athanasiadis, T Dagklis
INTRODUCTION: Main objective of the present study was to investigate the association between the presence of nuchal cord (NC) and the measurement of the ductus venosus pulsatility index for veins. (Ductus venosus (DV) PIV) Methods: This was a prospective study of 1974 singleton pregnancies that underwent first trimester screening at 11-13 + 6 gestational weeks. Colour Doppler was used to demonstrate the presence of a NC in all cases and the DV PIV was calculated routinely, as part of the standard scan...
August 7, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28759423/point-of-care-ultrasound-as-an-adjunct-in-the-diagnosis-of-neonatal-and-pediatric-superficial-soft-tissue-infection-a-report-of-two-cases
#4
Dalibor Kurepa, Colleen Galiczewski, Alison Civale, Vitaliya Boyar
Considerable technological advances, good safety profile, and ease of use have converged to support the use of ultrasound (US) as an important adjunct in the evaluation of superficial soft tissue infections (SSTI) in general and the differential diagnosis of cellulitis and abscess in particular. However, its use in neonatal populations has not been described. Pediatric studies report clinical examination is not always a reliable method of distinguishing cellulitis from abscess. Two (2) case reports are presented to supplement the growing body of published data that describe US imaging of SSTIs...
July 2017: Ostomy/wound Management
https://www.readbyqxmd.com/read/28755660/computational-and-experimental-assessment-of-influences-of-hemodynamic-shear-stress-on-carotid-plaque
#5
Hui Zhou, Long Meng, Wei Zhou, Lin Xin, Xiangxiang Xia, Shuai Li, Hairong Zheng, Lili Niu
BACKGROUND: Studies have identified hemodynamic shear stress as an important determinant of endothelial function and atherosclerosis. In this study, we assess the influences of hemodynamic shear stress on carotid plaques. METHODS: Carotid stenosis phantoms with three severity (30, 50, 70%) were made from 10% polyvinyl alcohol (PVA) cryogel. The phantoms were placed in a pulsatile flow loop with the same systolic/diastolic phase (35/65) and inlet flow rate (16 L/h)...
July 29, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28753955/investigation-into-the-effect-of-acoustic-radiation-force-and-acoustic-streaming-on-particle-patterning-in-acoustic-standing-wave-fields
#6
Shilei Liu, Yanye Yang, Zhengyang Ni, Xiasheng Guo, Linjiao Luo, Juan Tu, Dong Zhang, And Jie Zhang
Acoustic standing waves have been widely used in trapping, patterning, and manipulating particles, whereas one barrier remains: the lack of understanding of force conditions on particles which mainly include acoustic radiation force (ARF) and acoustic streaming (AS). In this paper, force conditions on micrometer size polystyrene microspheres in acoustic standing wave fields were investigated. The COMSOL(®) Mutiphysics particle tracing module was used to numerically simulate force conditions on various particles as a function of time...
July 19, 2017: Sensors
https://www.readbyqxmd.com/read/28752005/ultrasound-guided-cannulation-of-the-brachiocephalic-vein-in-infants-and-children-is-useful-and-stable
#7
Mark E Thompson
OBJECTIVE: Ultrasound-guided (USG) cannulation of the brachiocephalic vein (BCV) has been shown to be technically easy. We hypothesised that adoption of USG in-plane cannulation of the BCV as the primary approach to central venous cannulation at our institution would lead to central venous cannulation for a greater variety of indications. METHODS: We performed retrospective, descriptive comparison of all central lines placed in patients aged <16 years who underwent any surgical operation during calendar years 2012-2014 at a small, free-standing children's hospital...
June 2017: Turkish Journal of Anaesthesiology and Reanimation
https://www.readbyqxmd.com/read/28746186/laparoscopic-based-score-assessment-combined-with-a-multiple-disciplinary-team-in-management-of-recurrent-ovarian-cancer-a-single-center-prospective-study-for-personalized-surgical-therapy
#8
Weihong Yang, Zhongping Cheng, Hong Dai, Changchun Long, Hailun Liu
The aim of the study was to evaluate the effect of laparoscopic-based score combined with a multiple disciplinary team (MDT) for predicting optimal cytoreduction and perform personalized surgical treatment in recurrent ovarian cancer (ROC).The study is a single-center, prospective investigation. From March 2013 to May 2015, the consecutive treated patients with platinum-sensitive ROC were collected in Yangpu Hospital. The appropriated patients were enrolled into the study to perform the laparoscopic-based PIV (predictive index value) score assessment with an MDT for predicting optimal cytoreduction...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28745437/vascularized-ulnar-periosteal-pedicled-flap-for-forearm-reconstruction-anatomical-study-and-a-case-report
#9
Barrera-Ochoa Sergi, Velez Roberto, Rodriguez-Baeza Alfonso, De Bergua-Domingo Josep Maria, Knörr Jorge, Soldado Francisco
PURPOSE: Through an anatomical review, the aim of this study is to define the ulnar periosteal branches of the posterior interosseous vessels (PIV). In addition, we report the clinical utility of a vascularized ulnar periosteal pedicled flap (VUPPF), supplied by the investigated PIV, in a complex case of radial nonunion. METHODS: Ten upper limbs latex colored from fresh human cadavers were used. Branches of the PIV were dissected under 2.5× loupe magnification, noting the periosteal, muscular, and cutaneous branches arising distal to the interosseous recurrent artery...
July 26, 2017: Microsurgery
https://www.readbyqxmd.com/read/28742120/virus-induced-asthma-attack-the-importance-of-allergic-inflammation-in-response-to-viral-antigen-in-an-animal-model-of-asthma
#10
Christopher Skappak, Ramses Ilarraza, Ying-Qi Wu, Matthew G Drake, Darryl J Adamko
Asthma exacerbation can be a life-threatening condition, and is most often triggered by common respiratory viruses. Poor asthma control and worsening of respiratory function is associated with increased airway inflammation, including eosinophilia. Prevention of asthma exacerbation relies on treatment with corticosteroids, which preferentially inhibit allergic inflammation like eosinophils. Human studies demonstrate that inactivated virus can trigger eosinophil activation in vitro through antigen presentation and memory CD4+ lymphocytes...
2017: PloS One
https://www.readbyqxmd.com/read/28732945/heat-transfer-enhancement-using-2mhz-ultrasound
#11
Odin Bulliard-Sauret, Sebastien Ferrouillat, Laure Vignal, Alain Memponteil, Nicolas Gondrexon
The present work focuses on possible heat transfer enhancement from a heating plate towards tap water in forced convection by means of 2MHz ultrasound. The thermal approach allows to observe the increase of local convective heat transfer coefficients in the presence of ultrasound and to deduce a correlation between ultrasound power and Nusselt number. Heat transfer coefficient under ultrasound remains constant while heat transfer coefficient under silent conditions increases with Reynolds number from 900 up to 5000...
November 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28709930/particle-image-velocimetry-study-of-the-celiac-trunk-hemodynamic-induced-by-continuous-flow-left-ventricular-assist-device
#12
Francesco Scardulla, Diego Bellavia, Leonardo D'Acquisto, Giuseppe M Raffa, Salvatore Pasta
Whereas left ventricular assist device (LVAD) is the gold-standard therapy for patients with heart failure, gastrointestinal bleeding is one of the most common complications. LVAD implantation may remarkably impact aortic hemodynamics so that experimental and computational flow analyses can be used to study the disease mechanisms. Here we present an experimentally-calibrated computational model of the celiac trunk hemodynamic of a LVAD-supported patient who experienced bleeding after device implantation. Specifically, both particle image velocimetry (PIV) and echocardiography were used to measure and compare flow distributions in each branch of a phantom model of the patient abdominal aorta...
July 12, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28708210/particle-image-velocimetry-tests-on-pediatric-45-cc-and-30-cc-ventricle-assist-devices-effects-of-heart-rate-on-vad-operation
#13
Dariusz Witkowski, Damian Obidowski, Piotr Reorowicz, Daniel Jodko, Krzysztof Jozwik
BACKGROUND: This study investigated flow analysis inside pediatric ventricle assist devices (VADs) designed and manufactured at the Foundation for Cardiac Surgery Development (FRK), Zabrze, Poland. The main goal of the experiment was to define the minimal heart rate admissible in clinical practice. METHODS: The flow was directed by mechanical, single-disc valves developed at the Lodz University of Technology, Institute of Turbomachinery in Lodz, Poland. VAD operation conditions under different heart rates were analyzed...
July 8, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28692619/effects-of-a-systematic-quality-improvement-process-to-decrease-complications-in-trauma-patients-with-prehospital-peripheral-intravenous-access
#14
Angie Garrett, Stacy A Drake, John B Holcomb
Peripheral intravenous (PIV) catheterization is commonly performed, and its complications are costly, may result in serious health issues, and may adversely affect patient satisfaction. At our large urban Level I trauma center, we identified a cluster of 7 PIV complications from prehospital insertions in a 5-month period. Several of the patients developed noninfectious as well as infectious, limb-threatening complications requiring aggressive operative intervention. A performance improvement project was chartered to identify the cause of PIV complications and review current nursing practice...
July 2017: Journal of Trauma Nursing: the Official Journal of the Society of Trauma Nurses
https://www.readbyqxmd.com/read/28689483/the-influence-of-positioning-of-the-nellix-endovascular-aneurysm-sealing-system-on-suprarenal-and-renal-flow-an-in-vitro-study
#15
Johannes T Boersen, Erik Groot Jebbink, Lennart Van de Velde, Michel Versluis, Guillaume Lajoinie, Cornelius H Slump, Jean-Paul P M de Vries, Michel M P J Reijnen
PURPOSE: To examine the influence of device positioning and infrarenal neck diameter on flow patterns in the Nellix endovascular aneurysm sealing (EVAS) system. METHODS: The transition of the aortic flow lumen into two 10-mm-diameter stents after EVAS creates a mismatched area. Flow recirculation may affect local wall shear stress (WSS) profiles and residence time associated with atherosclerosis and thrombosis. To examine these issues, 7 abdominal aortic aneurysm flow phantoms were created, including 3 unstented controls and 3 stented models with infrarenal neck diameters of 24, 28, and 32 mm...
July 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28680600/a-novel-imaging-technique-to-evaluate-airflow-characteristics-in-the-upper-airway-of-an-obstructive-sleep-apnea-patient
#16
Hui Chen, Ghizlane Aarab, Jian-Wei Liu, Yong-Liang Yu, Jing Guo, Paul F van der Stelt, Frank Lobbezoo
We report about a novel imaging technique for airflow analysis, particle image velocimetry (PIV), used in a moderate obstructive sleep apnea (OSA) patient. By measuring the airflow characteristics in the upper airway at different protrusion positions, the effect of mandibular advancement device (MAD) on OSA was further understood.
July 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28675148/owl-inspired-leading-edge-serrations-play-a-crucial-role-in-aerodynamic-force-production-and-sound-suppression
#17
Chen Rao, Teruaki Ikeda, Toshiyuki Nakata, Hao Liu
Owls are widely known for silent flight, achieving remarkably low noise gliding and flapping flights owing to their unique wing morphologies, which are normally characterized by leading-edge serrations, trailing-edge fringes and velvet-like surfaces. How these morphological features affect aerodynamic force production and sound suppression or noise reduction, however, is still not well known. Here we address an integrated study of owl-inspired single feather wing models with and without leading-edge serrations by combining large-eddy simulations (LES) with particle-image velocimetry (PIV) and force measurements in a low-speed wind tunnel...
July 4, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28667400/microfluidic-device-flow-field-characterization-around-tumor-spheroids-with-tunable-necrosis-produced-in-an-optimized-off-chip-process
#18
James Baye, Casey Galvin, Amy Q Shen
Tumor spheroids are a 3-D tumor model that holds promise for testing cancer therapies in vitro using microfluidic devices. Tailoring the properties of a tumor spheroid is critical for evaluating therapies over a broad range of possible indications. Using human colon cancer cells (HCT-116), we demonstrate controlled tumor spheroid growth rates by varying the number of cells initially seeded into microwell chambers. The presence of a necrotic core in the spheroids could be controlled by changing the glucose concentration of the incubation medium...
September 2017: Biomedical Microdevices
https://www.readbyqxmd.com/read/28667333/post-secretional-activation-of-protease-iv-by-quorum-sensing-in-pseudomonas-aeruginosa
#19
Jungmin Oh, Xi-Hui Li, Soo-Kyong Kim, Joon-Hee Lee
Protease IV (PIV), a key virulence factor of Pseudomonas aeruginosa is a secreted lysyl-endopeptidase whose expression is induced by quorum sensing (QS). We found that PIV expressed in QS mutant has severe reduction of activity in culture supernatant (CS), even though it is overexpressed to high level. PIV purified from the QS mutant (M-PIV) had much lower activity than the PIV purified from wild type (P-PIV). We found that the propeptide cleaved from prepro-PIV was co-purified with M-PIV, but never with P-PIV...
June 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28658857/application-of-a-mixed-material-graft-to-posterior-intravaginal-slingoplasty-procedure-preliminary-pilot-series
#20
Birol Vural, Yigit Çakıroglu, Fisun Vural, Sule Köpük Yıldırım
Good anatomic outcomes have been achieved with transvaginal synthetic materials in pelvic organ prolapse, but mesh-related complications are a major health concern. Therefore, developing new synthetic or biological materials with increased tissue strength and decreased complications are major challenges. This paper presents preliminary pilot series of Posterior Intravaginal Slingoplasty (PIVS) procedure performed with mixed material graft containing both autologous tissue and a synthetic material. Six women with symptomatic Utero-Vaginal Prolapse (UVP) ≥ stage 2 underwent the PIVS procedure...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
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