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https://www.readbyqxmd.com/read/29151789/discriminative-role-of-brachial-artery-doppler-parameters-in-correlation-with-hemodialysis-arteriovenous-fistula
#1
Burak Mehmet Çildağ, Kutsi Ömer Faruk Köseoğlu
Purpose: The aim of this study was to evaluate the flow volume and resistive index parameters of the brachial artery in the functioning and dysfunctioning radiocephalic and brachiocephalic hemodialysis arteriovenous fistula (AVF). Methods: 82 patients were distributed into three groups according to their hemodialysis function - as normal function, decreased pump flow and increased venous pressure. Flow volumes and resistive indexes (RI) of the brachial artery of radiocephalic and brachiocephalic AVFs were measured by Doppler ultrasound...
2017: Clujul Medical (1957)
https://www.readbyqxmd.com/read/29137566/a-novel-exercise-device-for-venous-thromboembolism-prophylaxis-improves-venous-flow-in-bed-versus-ankle-movement-exercises-in-healthy-volunteers
#2
Yukiyo Shimizu, Hiroshi Kamada, Masataka Sakane, Shizu Aikawa, Hirotaka Mutsuzaki, Kenta Tanaka, Hajime Mishima, Akihiro Kanamori, Tomofumi Nishino, Naoyuki Ochiai, Masashi Yamazaki
PURPOSE: Venous thromboembolism prophylaxis is crucial. To facilitate active ankle movement in postoperative and bedridden patients, we developed a novel leg exercise apparatus (LEX). We investigated the effect of the LEX by comparing increases in lower extremity venous flow during different modes of exercise using the LEX. METHODS: In eight healthy participants, we measured venous flow volume and velocity in the femoral vein using duplex ultrasonography at 1, 10, 20, and 30 min after completing three modes of 1-min LEX exercises...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29131826/an-interactive-sports-video-game-as-an-intervention-for-rehabilitation-of-community-living-patients-with-schizophrenia-a-controlled-single-blind-crossover-study
#3
Nobuko Shimizu, Tomohiro Umemura, Masahiro Matsunaga, Takayoshi Hirai
Hypofrontality is a state of decreased cerebral blood flow in the prefrontal cortex during executive function performance; it is commonly observed in patients with schizophrenia. Cognitive dysfunction, as well as the psychological symptoms of schizophrenia, influences the ability of patients to reintegrate into society. The current study investigated the effects of an interactive sports video game (IVG; Nintendo Wii™ Sports Resort) on frontal lobe function of patients with schizophrenia. A sample of eight patients (6 male and 2 female; mean age = 46...
2017: PloS One
https://www.readbyqxmd.com/read/29107948/assessment-of-pleural-air-leakage-using-digital-chest-drainage-system-after-surgical-pulmonary-resection-comparison-of-visible-alveolar-air-leakage-with-the-digital-value-measured-by-a-digital-chest-drainage-system
#4
Ryo Mori, Koji Yamazaki, Fumihiro Shoji, Hidenori Kouso, Chie Ushijima, Naoko Miura, Tomoyoshi Takenaka, Sadanori Takeo
BACKGROUND: The sensitivity of postoperative pleural air leakage (PAL) after pulmonary resection is evaluated by a simple subjective grading method in clinical practice. A new electronic digital chest drainage evaluation system (DCS) recently became clinically available. This study was designed to evaluate the clinical application of the DCS in monitoring the airflow volume and managing postoperative PAL. METHODS: We prospectively enrolled 25 patients who underwent pulmonary resection...
2017: PloS One
https://www.readbyqxmd.com/read/29105839/hemodialysis-in-neonates-and-infants-a-systematic-review
#5
REVIEW
Rupesh Raina, Prashanth Vijayaraghavan, Gaurav Kapur, Sidharth Kumar Sethi, Vinod Krishnappa, Deepak Kumar, Timothy E Bunchman, Shari D Bolen, Deepa Chand
Hemodialysis (HD) in neonates and infants poses unique challenges due to high risks of mortality attributable to obligatory small blood flow volumes. Although HD is often necessary in neonates, its effectiveness and feasibility are poorly understood. The aim of this review is to describe in detail the few studies reporting on HD in neonates and infants (<12 months old) and then dissertate more broadly on the subject with an emphasis on recent innovations with potential to overcome traditional barriers for effective HD in this population...
November 5, 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/29098524/mechanical-dyssynchrony-alters-left-ventricular-flow-energetics-in-failing-hearts-with-lbbb-a-4d-flow-cmr-pilot-study
#6
Jakub Zajac, Jonatan Eriksson, Urban Alehagen, Tino Ebbers, Ann F Bolger, Carl-Johan Carlhäll
The impact of left bundle branch block (LBBB) related mechanical dyssynchrony on left ventricular (LV) diastolic function remains unclear. 4D flow cardiovascular magnetic resonance (CMR) has provided reliable markers of LV dysfunction: reduced volume and kinetic energy (KE) of the portion of LV inflow which passes directly to outflow (Direct Flow) has been demonstrated in failing hearts compared to normal hearts. We sought to investigate the impact of mechanical dyssynchrony on diastolic function by comparing 4D flow in myopathic LVs with and without LBBB...
November 2, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/29080996/impact-of-local-heating-and-cooling-on-skeletal-muscle-transcriptional-response-related-to-myogenesis-and-proteolysis
#7
Roksana B Zak, B M Hassenstab, L K Zuehlke, M W S Heesch, R J Shute, T L Laursen, D T LaSalle, D R Slivka
PURPOSE: To determine the impact of local muscle heating and cooling on myogenic and proteolytic gene responses following resistance exercise. METHODS: Recreationally trained males (n = 12), age 25.3 ± 1.5, % body fat 13.6 ± 1.92, completed four sets of 8-12 repetitions of unilateral leg press and leg extension while heating one leg, and cooling the other. Muscle biopsies were taken from the vastus lateralis of each leg pre and 4 h post exercise. RESULTS: MyoD, FOXO1, and MuRF1 mRNA increased with exercise regardless of temperature (p < 0...
October 28, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29069572/blood-flow-volume-and-arterio-venous-passages-in-induced-mammary-tumours-of-the-rat
#8
Ragnar Hultborn
OBJECTIVE: To study blood flow, vascular volume and arterio-venous passages in induced mammary tumours of the rat to characterize parameters possibly responsible for tumour hyponutrition. METHOD: Dimethylbenzanthracene-induced mammary tumours in Sprague-Dawley rats were studied. Regional blood flow was studied by use of the radioactive microsphere tracer technique using (141)Cerium-labelled 15μm spheres coinjected into the left cardiac ventricle with (125)Iodine-labelled 25μm spheres...
October 22, 2017: Microvascular Research
https://www.readbyqxmd.com/read/29067926/rare-tracheal-tumor-solitary-plasmacytoma
#9
R Stevic, M Ercegovac, J Stojšić, N Čolić
Primary tracheal tumors are rare and trachea is an exceedingly rare site of extramedullary plasmacytoma (EMP). We report a case of solitary tracheal plasmacytoma causing symptoms of airway obstruction in a 59-year-old man. Flow/volume loop indicated the fixed central airway obstruction. Computerized tomography and bronchoscopy demonstrated a sessile tumor on posterior tracheal wall obstructing 80% of the lumen. Partial tracheal resection with T-T anastomosis was performed. Pathologic analysis of resected mass revealed EMP...
October 23, 2017: Journal of Postgraduate Medicine
https://www.readbyqxmd.com/read/29051976/late-gadolinium-enhancement-on-cardiac-magnetic-resonance-imaging-is-associated-with-coronary-endothelial-dysfunction-in-patients-with-dilated-cardiomyopathy
#10
Mina Nakayama, Megumi Yamamuro, Seiji Takashio, Tomoaki Uemura, Naoki Nakayama, Kyoko Hirakawa, Seitaro Oda, Daisuke Utsunomiya, Koichi Kaikita, Seiji Hokimoto, Yasuyuki Yamashita, Yukiko Morita, Kazuo Kimura, Kouichi Tamura, Kenichi Tsujita
Myocardial fibrosis and coronary endothelial dysfunction are important determinants of outcome in patients with heart failure. However, the relationship of these factors in patients with dilated cardiomyopathy (DCM) is not fully understood. This study aimed to investigate the relationship between endothelium-dependent coronary vasomotor abnormality and late gadolinium enhancement (LGE) on cardiac magnetic resonance imaging (CMR) in patients with DCM. We examined 38 consecutive patients with DCM. All patients underwent CMR and the acetylcholine (ACh) provocation test using cardiac catheterization...
October 19, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/29042872/accuracy-of-maximal-expiratory-flow-volume-curve-curvilinearity-and-fractional-exhaled-nitric-oxide-for-detection-of-children-with-atopic-asthma
#11
Sang Hoo Park, Min Ji Im, Sang-Yong Eom, Youn-Soo Hahn
PURPOSE: Airway pathology in children with atopic asthma can be reflected by the concave shape of the maximal expiratory flow-volume (MEFV) curve and high fractional exhaled nitric oxide (FeNO) values. We evaluated the capacity of the curvilinearity of the MEFV curve, FeNO, and their combination to distinguish subjects with atopic asthma from healthy individuals. METHODS: FeNO and angle β, which characterizes the general configuration of the MEFV curve, were determined in 119 steroid-naïve individuals with atopic asthma aged 8 to 16 years, and in 92 age-matched healthy controls...
September 2017: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/29038224/effect-of-elective-percutaneous-coronary-intervention-on-hyperemic-absolute-coronary-blood-flow-volume-and-microvascular-resistance
#12
Yoshihisa Kanaji, Tadashi Murai, Taishi Yonetsu, Eisuke Usui, Makoto Araki, Junji Matsuda, Masahiro Hoshino, Masao Yamaguchi, Takayuki Niida, Masahiro Hada, Sadamitsu Ichijyo, Rikuta Hamaya, Yoshinori Kanno, Mitsuaki Isobe, Tsunekazu Kakuta
BACKGROUND: The hemodynamics involved in the relationship between absolute coronary blood flow (ABF) volume and myocardial resistance (MR) are complex, and the effect of percutaneous coronary intervention (PCI) on their changes remains unclear. The aim of this study was to investigate the differences in hyperemic ABF and MR before and after elective PCI using a thermodilution method. METHODS AND RESULTS: We investigated 28 vessels (right coronary artery, 9; left anterior descending coronary artery, 18; left circumflex coronary artery, 1) from 28 patients with stable angina pectoris undergoing elective PCI...
October 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29036571/atrial-flow-dynamics-as-a-determinant-of-tissue-temperature-during-balloon-cryoablation
#13
Justin Ghosh, Mark A McGuire
Aims: Balloon cryoablation is an accepted method of achieving pulmonary vein isolation for the treatment of atrial fibrillation. The relationship between blood flow in the atrium and cryo energy delivery to the tissue remains poorly understood. Methods and results: Controlled cryoablations were performed in vitro using a pulmonary vein phantom constructed from bovine muscle, providing a 20 mm vein ostium. A temperature sensor was mounted within the 'vein wall' at a 1 mm tissue depth...
October 4, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28981361/follow-up-of-treatment-response-with-dynamic-doppler-ultrasound-in-raynaud-phenomenon
#14
Ugur Toprak, Zeynep Ozbalkan, Murat Erdugan, Selcuk Parlak, Sevinc Can Sandıkcı, Tunca Kaya, Suzan Şaylısoy
OBJECTIVE: The purpose of this study was to investigate the role of flow parameters obtained with dynamic Doppler ultrasound in the objective follow-up of treatment response in patients with Raynaud phenomenon (RP). SUBJECTS AND METHODS: The study included 33 patients with newly diagnosed primary RP, 31 with secondary RP, and 26 healthy participants (control subjects). Both groups of patients with RP underwent sonography before and after treatment. The control group underwent sonography once...
December 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28946603/application-of-micro-bubbles-on-oral-care
#15
Pei-Ju Lin, Ming-Chuen Chuang, Szu-Chung Chang
OBJECTIVE: This study proposed a method of using a modified micro-bubble generator with its ejection nozzle connected to an ergonomically designed soft teeth-tray for plaque removal. The applicability of this method was verified and the influence on plaque removal efficacy of some parameters of this device was clarified. METHODS: The micro-bubble generator used in this study has 5 rotation speed settings, 5 nozzle sizes, and a soft teeth-tray ejection pore diameters...
September 15, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28937857/evaluation-of-retinal-blood-flow-before-and-after-panretinal-photocoagulation-using-pattern-scan-laser-for-diabetic-retinopathy
#16
Yoshihisa Yamada, Kiyoshi Suzuma, Naoko Onizuka, Masafumi Uematsu, Yasser Helmy Mohamed, Takashi Kitaoka
PURPOSE: Laser speckle flowgraphy (LSFG) can measure blood flow in the ocular fundus. We analyzed the relationship between retinal blood flow and panretinal photocoagulation (PRP) in diabetic retinopathy. METHODS: This retrospective observational study examined the eyes of 35 patients with proliferative diabetic retinopathy (PDR) or non-PDR (NPDR). PRP was performed using a pattern scan laser. Using LSFG, blood flow was evaluated as the mean blur rate (MBR) or the relative flow volume (RFV)...
September 22, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28898284/optic-nerve-head-and-retinal-blood-flow-regulation-during-isometric-exercise-as-assessed-with-laser-speckle-flowgraphy
#17
Katarzyna J Witkowska, Ahmed M Bata, Giacomo Calzetti, Nikolaus Luft, Klemens Fondi, Piotr A Wozniak, Doreen Schmidl, Matthias Bolz, Alina Popa-Cherecheanu, René M Werkmeister, Gerhard Garhöfer, Leopold Schmetterer
The aim of the present study was to investigate regulation of blood flow (BF) in the optic nerve head (ONH) and a peripapillary region (PPR) during an isometric exercise-induced increase in ocular perfusion pressure (OPP) using laser speckle flowgraphy (LSFG) in healthy subjects. For this purpose, a total of 27 subjects was included in this study. Mean blur rate in tissue (MT) was measured in the ONH and in a PPR as well as relative flow volume (RFV) in retinal arteries (ART) and veins (VEIN) using LSFG. All participants performed isometric exercise for 6 minutes during which MT and mean arterial pressure were measured every minute...
2017: PloS One
https://www.readbyqxmd.com/read/28863175/the-modeling-of-attraction-characteristics-regarding-passenger-flow-in-urban-rail-transit-network-based-on-field-theory
#18
Man Li, Yanhui Wang, Limin Jia
Aimed at the complicated problems of attraction characteristics regarding passenger flow in urban rail transit network, the concept of the gravity field of passenger flow is proposed in this paper. We establish the computation methods of field strength and potential energy to reveal the potential attraction relationship among stations from the perspective of the collection and distribution of passenger flow and the topology of network. As for the computation methods of field strength, an optimum path concept is proposed to define betweenness centrality parameter...
2017: PloS One
https://www.readbyqxmd.com/read/28856715/feasibility-of-quantitative-regional-ventilation-and-perfusion-mapping-with-phase-resolved-functional-lung-preful-mri-in-healthy-volunteers-and-copd-cteph-and-cf-patients
#19
Andreas Voskrebenzev, Marcel Gutberlet, Filip Klimeš, Till F Kaireit, Christian Schönfeld, Alexander Rotärmel, Frank Wacker, Jens Vogel-Claussen
PURPOSE: In this feasibility study, a phase-resolved functional lung imaging postprocessing method for extraction of dynamic perfusion and ventilation parameters using a conventional 1H lung MRI Fourier decomposition acquisition is introduced. METHODS: Time series of coronal gradient-echo MR images with a temporal resolution of 288 to 324 ms of two healthy volunteers, one patient with chronic thromboembolic hypertension, one patient with cystic fibrosis, and one patient with chronic obstructive pulmonary disease were acquired at 1...
August 30, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28835050/-implantation-of-the-irradiation-stent-system-intoportal-vein-studies-on-normal-beagles
#20
T K Li, G Y Zhu, W M Li, J Lu, C Wang, T F Pan, Y Wang, J H Guo
Objective: To assess the feasibility and safety of the irradiation stent system in portal vein on normal beagles. Methods: A portal vein irradiation stent system was composed of an Iodine-125 seeds-carrier and a conventional stent.Twenty beagle dogs were randomly assigned to receive treatment with a conventional stent (5 beagle dogs) or an irradiation stent system (15 beagle dogs in three groups received 11.1, 22.2, 33.3 MBq radioactivity, n=5 in each dose group). Follow-up methods included blood biochemical test, color Doppler sonographyand CT scan at 0, 15, 30, 60, and 120 days after implantation of irradiation stent system...
August 15, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
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