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https://www.readbyqxmd.com/read/27913338/intracardiac-vortex-dynamics-by-high-frame-rate-doppler-vortography-i-in-vivo-i-comparison-with-vector-flow-mapping-and-4-d-flow-mri
#1
Julia Faurie, Mathilde Baudet, Kondo Claude Assi, Dominique Auger, Guillaume Gilbert, Francois Tournoux, Damien Garcia
Recent studies have suggested that intracardiac vortex flow imaging could be of clinical interest to early diagnose the diastolic heart function. Doppler vortography has been intro-duced as a simple color Doppler method to detect and quantify intraventricular vortices. This method is able to locate a vortex core based on the recognition of an antisymmetric pattern in the Doppler velocity field. Because the heart is a fast-moving organ, high frame rates are needed to decipher the whole blood vortex dynamics during diastole...
November 29, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27913304/effects-of-nongenetic-factors-on-immune-cell-dynamics-in-early-childhood-the-generation-r-study
#2
Diana van den Heuvel, Michelle A E Jansen, Kazem Nasserinejad, Willem A Dik, Ellen G van Lochem, Liesbeth E Bakker-Jonges, Halima Bouallouch-Charif, Vincent W V Jaddoe, Herbert Hooijkaas, Jacques J M van Dongen, Henriëtte A Moll, Menno C van Zelm
BACKGROUND: . Numbers of blood leukocyte subsets are highly dynamic in childhood and differ greatly between individuals. Inter-individual variation is only partly accounted for by genetic factors. OBJECTIVE: Determine which nongenetic factors affect the dynamics of innate leukocytes, and naive and memory lymphocyte subsets. METHODS: . We performed six-color flow cytometry and linear mixed effect modeling to define the dynamics of 62 leukocyte subsets from birth to 6 years of age in 1,182 children with one to five measurements per individual...
November 29, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27912200/is-cha2ds2-vasc-appropriate-for-hyperthyroid-patients-with-atrial-fibrillation-implications-of-adding-a-transesophageal-echocardiography-evaluation
#3
Marcus Vinicius Leitão de Souza, Patricia de Fátima Dos Santos Teixeira, Mario Vaisman, Sergio Salles Xavier
BACKGROUND: Anticoagulation remains a controversial issue among hyperthyroid patients with atrial fibrillation (AF). We aimed to evaluate the prevalence of the thrombogenic milieu (TM), detected using transesophageal echocardiography (TEE), among patients with AF related to hyperthyroidism, and to correlate these findings with the clinical embolic risk classification (CHA2DS2-VASc). METHODS: CHA2DS2-VASc score, thyroid hormonal status, time since hyperthyroidism diagnosis, transthoracic echocardiography (TTE) and TEE were assessed in 47 consecutive patients aged between 18 and 65years with AF related to hyperthyroidism...
November 10, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27911421/-analysis-of-changes-in-central-macular-thickness-based-on-optical-coherence-tomography-angiography-findings-in-retinal-vein-occlusion
#4
M V Budzinskaya, A V Shelankova, M A Mikhailova, A A Plyukhova, N M Nurieva, A V Fomin
AIM: To investigate the relationship between OCT angiography measurements and central fundus changes in patients with retinal vein occlusion (RVO). MATERIAL AND METHODS: The study enrolled 21 RVO patients aged from 55 to 86 years (69.9±2.28 years), including 8 patients with ischemic central RVO (I-CRVO; 73.6±3.4 years on average) and 13 patients with branch RVO (BRVO; 67.6±3.0 years on average). Of the latter, 8 cases were ischemic (I-BRVO) and 5 non-ischemic (NI-BRVO)...
2016: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/27911373/the-mouse-isolated-perfused-kidney-technique
#5
Jan Czogalla, Frank Schweda, Johannes Loffing
The mouse isolated perfused kidney (MIPK) is a technique for keeping a mouse kidney under ex vivo conditions perfused and functional for 1 hr. This is a prerequisite for studying the physiology of the isolated organ and for many innovative applications that may be possible in the future, including perfusion decellularization for kidney bioengineering or the administration of anti-rejection or genome-editing drugs in high doses to prime the kidney for transplantation. During the time of the perfusion, the kidney can be manipulated, renal function can be assessed, and various pharmaceuticals administered...
November 17, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27910074/evolutional-characterization-of-photochemically-induced-stroke-in-rats-a-multimodality-imaging-and-molecular-biological-study
#6
Nai-Wei Liu, Chien-Chih Ke, Yonghua Zhao, Yi-An Chen, Kim-Chuan Chan, David Tat-Wei Tan, Jhih-Shian Lee, You-Yin Chen, Tun-Wei Hsu, Ya-Ju Hsieh, Chi-Wei Chang, Bang-Hung Yang, Wen-Sheng Huang, Ren-Shyan Liu
Photochemically induced cerebral ischemia is an easy-manipulated, reproducible, relatively noninvasive, and lesion controllable model for translational study of ischemic stroke. In order to longitudinally investigate the characterization of the model, magnetic resonance imaging, (18)F-2-deoxy-glucose positron emission tomography, fluorescence, and bioluminescence imaging system were performed in correlation with triphenyl tetrazolium chloride (TTC), hematoxylin-eosin staining, and immunohistochemistry examinations of glial fibrillary acidic protein, CD68, NeuN, von willebrand factor, and α-smooth muscle actin in the infarct zone...
December 1, 2016: Translational Stroke Research
https://www.readbyqxmd.com/read/27910005/doppler-images-of-intra-pulmonary-shunt-within-atelectasis-in-anesthetized-children
#7
Cecilia M Acosta, Gerardo Tusman, Mauro Costantini, Camila Echevarría, Sergio Pollioto, Diego Abrego, Fernando Suarez-Sipmann, Stephan H Böhm
BACKGROUND: Doppler images of pulmonary vessels in pulmonary diseases associated with subpleural consolidations have been described. Color Doppler easily identifies such vessels within consolidations while spectral Doppler analysis allows the differentiation between pulmonary and bronchial arteries. Thus, Doppler helps in diagnosing the nature of consolidations. To our knowledge, Doppler analysis of pulmonary vessels within anesthesia-induced atelectasis has never been described before...
December 2016: Critical Ultrasound Journal
https://www.readbyqxmd.com/read/27908703/simultaneous-effects-of-coagulation-and-variable-magnetic-field-on-peristaltically-induced-motion-of-jeffrey-nanofluid-containing-gyrotactic-microorganism
#8
M M Bhatti, A Zeeshan, R Ellahi
In this article, simultaneous effects of coagulation (blood clot) and variable magnetic field on peristaltically induced motion of non-Newtonian Jeffrey nanofluid containing gyrotactic microorganism through an annulus have been studied. The effects of an endoscope also taken into consideration in our study as a special case. The governing flow problem is simplified by taking the approximation of long wavelength and creeping flow regime. The resulting highly coupled differential equations are solved analytically with the help of perturbation method and series solution have been presented up to second order approximation...
November 28, 2016: Microvascular Research
https://www.readbyqxmd.com/read/27908372/the-nontransecting-approach-to-bulbar-urethroplasty
#9
REVIEW
Stella Ivaz, Simon Bugeja, Anastasia Frost, Daniela Andrich, Anthony R Mundy
The standard treatment of bulbar urethral strictures of appropriate length is excision and primary anastomosis (EPA), irrespective of the cause of the stricture. This involves transection of the corpus spongiosum (CS) and disruption of the blood flow within the CS as a consequence. The success rate of EPA in curing these strictures is very high, but there is a considerable body of evidence and of opinion to suggest that there is a significant risk of sexual dysfunction and, potentially, of other adverse consequences that occur because of transection of the CS...
February 2017: Urologic Clinics of North America
https://www.readbyqxmd.com/read/27908307/evolution-of-imaging-findings-laboratory-and-functional-parameters-in-rheumatoid-arthritis-patients-after-one-year-of-treatment-with-anti-tnf-%C3%AE-agents
#10
Efstathios E Detorakis, Eleftherios Magkanas, Ismini Lasithiotaki, Prodromos Sidiropoulos, Dimitrios T Boumpas, Nicholas Gourtsoyiannis, Katerina Antoniou, Maria Raissaki
OBJECTIVES: To investigate the efficacy and safety of anti-TNF-α agent treatment compared to non-biologic DMARDs in rheumatoid arthritis patients. METHODS: 82 consecutive patients, 29 males, 53 females, aged 42-79, diagnosed with RA and suitable for anti-TNF-α treatment composed two study groups: 42 with pre-existing rheumatoid arthritis-related interstitial lung disease (RA-ILD) and 40 without RA-ILD. Respective control groups consisted of 44 patients with pre-existing RA-ILD and 44 patients without RA-ILD, treated with non-biologic DMARDs...
October 27, 2016: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/27905560/increased-emr2-expression-on-neutrophils-correlates-with-disease-severity-and-predicts-overall-mortality-in-cirrhotic-patients
#11
Chien-Hao Huang, Wen-Juei Jeng, Yu-Pin Ho, Wei- Teng, Yi-Chung Hsieh, Wei-Ting Chen, Yi-Cheng Chen, Hsi-Hsien Lin, I-Shyan Sheen, Chun-Yen Lin
Patients with liver cirrhosis are susceptible to infections with high short-term mortalities. One CD97-related EGF-TM7 molecule, EMR2 (EGF-like molecule containing mucin-like hormone receptor 2), had been shown to regulate human neutrophil function, potentiate systemic inflammation. Nevertheless, EMR2 could also suppress neutrophil survival. Studying the role of EMR2 on neutrophil would be intriguing. 48 healthy volunteers and 100 cirrhotic patients were enrolled. Neutrophils were isolated from peripheral blood and cell surface markers were measured by flow cytometry...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27905492/high-fidelity-computational-simulation-of-thrombus-formation-in-thoratec-heartmate-ii-continuous-flow-ventricular-assist-device
#12
Wei-Tao Wu, Fang Yang, Jingchun Wu, Nadine Aubry, Mehrdad Massoudi, James F Antaki
Continuous flow ventricular assist devices (cfVADs) provide a life-saving therapy for severe heart failure. However, in recent years, the incidence of device-related thrombosis (resulting in stroke, device-exchange surgery or premature death) has been increasing dramatically, which has alarmed both the medical community and the FDA. The objective of this study was to gain improved understanding of the initiation and progression of thrombosis in one of the most commonly used cfVADs, the Thoratec HeartMate II...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27904757/brain-hemorrhage-after-electrical-burn-injury-case-report-and-probable-mechanism
#13
Gutierrez Aceves Guillermo Axayacalt, Ceja Espinosa Alejandro, Rios Alanis Marcos, Ruiz Flores Milton Inocencio, Herrera Gonzalez Jose Alfredo
BACKGROUND: High-voltage electric injury may induce lesion in different organs. In addition to the local tissue damage, electrical injuries may lead to neurological deficits, musculoskeletal damage, and cardiovascular injury. Severe vascular damage may occur making the blood vessels involved prone to thrombosis and spontaneous rupture. CASE DESCRIPTION: Here, we present the case of a 39-year-old male who suffered an electrical burn with high tension wire causing intracranial bleeding...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/27904545/treatment-of-recurrent-prosthetic-mitral-valve-thrombosis-with-reteplase-a-report-of-four-cases
#14
Neda Behzadnia, Babak Sharif Kashani, Arda Kiani, Atefe Abedini, Seyed Reza Seyedi, Hossein Zargham Ahmadi, Farah Naghash Zadeh, Atefeh Fakharian
Thrombosis is a life threatening complications of prosthetic mitral valves and is associated with high morbidity and mortality. Even in presence of systemic anticoagulation prosthetic valve thrombosis has an incidence of 0.5% to 8%. Recurrent prosthetic valve thrombosis and the resulting thrombotic occlusion require re-establishment of blood flow across the valve. While surgical repair is considered the classic first line treatment option for prosthetic valve thrombosis, intravenous thrombolysis has emerged as an acceptable alternative for the first episode of prosthetic valve thrombosis...
2016: Tanaffos
https://www.readbyqxmd.com/read/27903511/cardiac-remodeling-and-increased-central-venous-pressure-underlie-elevated-stroke-volume-and-cardiac-output-of-seawater-acclimated-rainbow-trout
#15
Jeroen Brijs, Erik Sandblom, Esmée Dekens, Joacim Näslund, Andreas Ekström, Michael Axelsson
Substantial increases in cardiac output (CO), stroke volume (SV) and gastrointestinal blood flow are essential for euryhaline rainbow trout (Oncorhyncus mykiss) osmoregulating in seawater. However, the underlying hemodynamic mechanisms responsible for these changes are unknown. By examining a range of circulatory and cardiac morphological variables of seawater- and freshwater-acclimated rainbow trout, the present study revealed a significantly higher central venous pressure (CVP) in seawater-acclimated trout (~0...
November 30, 2016: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/27903394/-correlation-between-epicardial-adipose-tissue-thickness-and-slow-flow-of-non-obstructive-coronary-artery
#16
Q Wu, B Yang
Objective: To investigate the correlation between epicardial adipose thickness and slow flow of non-obstructive coronary artery. Methods: Clinical data of patients with coronary angiography examination evidenced stenosis<50% in our department from May 2014 to May 2015 were retrospectively analyzed.According to the level of TIMI in angiography, patients were divided into slow blood flow group (TIMI Ⅰ-Ⅱ, n=16) and normal blood flow group (TIMI Ⅲ, n=127). All epicardial adipose thickness was determined by echocardiography and data of biochemical data (fibrinogen, whole blood viscosity at high shear rate, erythrocyte aggregation index, platelet count, and platelet aggregation rate) were also analyzed...
November 24, 2016: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/27902863/evaluation-of-recurrent-high-grade-gliomas-treated-with-bevacizumab-a-preliminary-report-of-3d-pseudocontinuous-artery-spin-labeling
#17
Yuelei Lyu, Shuai Liu, Hui You, Bo Hou, Yu Wang, Wenbin Ma, Feng Feng
PURPOSE: To investigate the role of cerebral blood flow (CBF) derived from a 3D fast spin echo (FSE) pseudocontinuous artery spin labeling (pcASL) sequence in evaluating the survival rate of recurrent high-grade gliomas (rHGGs) that were treated with bevacizumab (BEV). MATERIALS AND METHODS: Sixteen patients with rHGGs who underwent 3T 3D FSE pcASL imaging 1-2 days before (baseline or pre-BEV) and within 1 month after BEV treatment initiation (post-BEV) were included in the study...
November 30, 2016: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/27902842/vagal-denervation-inhibits-the-increase-in-pulmonary-blood-flow-during-partial-lung-aeration-at-birth
#18
Justin A R Lang, James T Pearson, Corinna Binder-Heschl, Megan J Wallace, Melissa L Siew, Marcus J Kitchen, Arjan B Te Pas, Robert A Lewis, Graeme R Polglase, Mikiyasu Shirai, Stuart B Hooper
Air entry into the lungs at birth triggers major cardiovascular changes, including a large increase in pulmonary blood flow (PBF) that is not spatially related to regional lung aeration. To investigate the possible underlying role of a vagally-mediated stimulus, we used simultaneous phase-contrast X-ray imaging and angiography in near-term (30 days of gestation) vagotomised (n = 15) or sham-operated (n = 15) rabbit kittens. Rabbits were imaged before ventilation, when one lung was ventilated (unilateral) with 100% nitrogen (N2 ), air or 100% oxygen (O2 ), before all kittens were switched to unilateral ventilation in air, then ventilation of both lungs using air...
November 30, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27902494/an-ultrasound-look-at-korotkoff-sounds-the-role-of-pulse-wave-velocity-and-flow-turbulence
#19
Amir Benmira, Antonia Perez-Martin, Iris Schuster, Florent Veye, Jean Triboulet, Nicolas Berron, Isabelle Aichoun, Sarah Coudray, Jérémy Laurent, Fethi Bereksi-Reguig, Michel Dauzat
AIMS: The aim of this study was to analyze the temporal relationships between pressure, flow, and Korotkoff sounds, providing clues for their comprehensive interpretation. MATERIALS AND METHODS: When measuring blood pressure in a group of 23 volunteers, we used duplex Doppler ultrasonography to assess, under the arm-cuff, the brachial artery flow, diameter changes, and local pulse wave velocity (PWV), while recording Korotkoff sounds 10 cm downstream together with cuff pressure and ECG...
November 29, 2016: Blood Pressure Monitoring
https://www.readbyqxmd.com/read/27900330/structural-comparison-between-the-right-and-left-atrial-appendages-using-multidetector-computed-tomography
#20
Koichi Shinoda, Shogo Hayashi, Daisuke Fukuoka, Ryo Torii, Tsuneo Watanabe, Takashi Nakano
The three-dimensional (3D) structures of the right atrial appendage (RAA) and left atrial appendage (LAA) were compared to clarify why thrombus formation less frequently occurs in RAA than in LAA. Morphological differences between RAA and LAA of 34 formalin-preserved cadaver hearts were investigated. Molds of RAA and LAA specimens were made and the neck areas, volumes of the atrial appendages (AA), and amount of pectinate muscles (PMs) were analyzed using multidetector computed tomography. In RAA, most PMs were connected to one another and formed a "dendritic" appearance and the inner surface area was smaller than in LAA...
2016: BioMed Research International
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