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https://www.readbyqxmd.com/read/28425258/assessment-of-developmental-and-radiological-long-term-outcomeof-children-with-surgically-treated-midgut-volvulus
#1
Ahmet Murat Çakmak, Özlem Boybeyi Türer, Gülnur Göllü Bahadir, Bilge Türedi, Ufuk Ateş, Adalet Elçin Yildiz, Gönül Küçük, Ömer Suat Fitöz, Betül Ulukol, Mustafa Kemal Aslan, Tutku Soyer, Hüseyin Dindar
BACKGROUND/AIM: The aim is to evaluate the long-term outcome of asymptomatic patients who underwent surgical correction for midgut volvulus. MATERIALS AND METHODS: Seven patients managed surgically for midgut volvulus in the last 3 years were included. Demographic features, symptoms at presentation, diagnoses, surgical procedures, and complications were recorded. Patients were then contacted for follow-up and evaluation of long-term outcomes. General physical conditions, anthropometric parameters, feeding habits, and defecation histories were evaluated...
April 18, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28416375/automatic-and-manual-doppler-velocimetry-measurements-of-the-uterine-artery-in-pregnant-ewes
#2
Renato Travassos Beltrame, Lucas Buss Littig, Carolina Covre, Amanda de Barros Martins, Celia Raquel Quirino, R L D Costa
We aimed to compare measurements of speed and blood flow parameters obtained manually and automatically in the uterine arteries of pregnant ewes. Eighteen Santa Inês ewes, confirmed to be pregnant, were followed every 2 weeks until parturition. The systolic peak (PS), end diastolic velocity (ED), maximum and average speed in the cardiac cycle (TAMAX and TAMEAN, respectively), pulsatility index (PI), resistance index (RI) and the systole/diastole (S/D) ratio and body flow volume (BFV) was measured. We began the wave evaluation automatically, then the observer manually marked the beginning and end of the wave...
March 31, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28415162/value-of-doppler-evaluation-of-physically-abnormal-fistula-hemodynamic-guidelines-and-access-outcomes
#3
Seong Cho, Yu-Ji Lee, Sung-Rok Kim
Background/Aims: The strategy of access care at out center involves the use of ultrasound (USG) in case of physical examination (PE) abnormality. USG determines the need of angiography. This study investigated the possible association between the need for percutaneous transluminal angioplasty (PTA) and hemodynamic parameters of USG. The study also assessed the effects of this monitoring strategy on outcomes in comparison with a historical control. Methods: A retrospective study of the medical records of 127 patients (65 PTA, 62 non-PTA) was conducted...
April 18, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28413406/a-change-in-ocular-circulation-after-photocoagulation-for-retinopathy-of-prematurity-in-a-neonate
#4
Tadashi Matsumoto, Takashi Itokawa, Tomoaki Shiba, Kotaro Hine, Yuichi Hori
BACKGROUND: The dilation of veins and tortuosity of arteries that occur in retinopathy of prematurity (ROP) are improved by therapy, and thus posttherapy changes in ocular circulation are also conceivable. We report a case of ROP in which we were able to measure the ocular circulation before and after photocoagulation therapy, using a laser speckle flowgraphy (LSFG) system that is modified for neonates. CASE REPORT: A female infant was born at 25 weeks' gestation with a birth weight of 808 g...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28397945/assessment-of-crohn-s-disease-activity-by-doppler-sonography
#5
Ying Na, Jian Zhou, Xiang-Min Xiao, Wen-Xing Zhang, Hong-Lei Gao, Yang Wang, Xiao-Yan Han, Zuo-Cheng Sun, Hui-Min Xu
To investigate the diagnostic accuracy of ultrasound for evaluation of inflammatory activity in patients with Crohn's disease (CD). Methods: Fifty-six patients with histologically proven CD (39 with active, 17 with inactive disease) and 30 healthy volunteers as a control group were enrolled in the study at WeiFang People's Hospital, Weifang Province, China from October 2012 to December 2014. Bowel wall thickness, and vascularity pattern were measured by Doppler ultrasound. Results: There was a significant difference in flow volume of the superior mesenteric artery (585 ± 235 ml/min) in the patients with active disease, compared with those with inactive disease (401 ± 238 ml/min) and the control group (390 ± 189 ml/min, p less than 0...
April 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/28382613/reduced-internal-carotid-artery-flow-in-color-coded-carotid-duplex-sonography
#6
Fu-Yi Yang, Po-Ren Hsu, Shinn-Kuang Lin
PURPOSE: Reduced flow in the internal carotid artery (ICA) is related to cerebral ischemia. We established a classification of reduced ICA flow through color-coded carotid duplex (CCD) sonography. METHODS: We retrospectively reviewed 25,000 CCD images in sonography laboratory. RESULTS: Reduced ICA flow [flow volume (FV) less than 100 mL/min] was found in 1.2% of all studies, and 270 patients were enrolled. We included 8% patients with lesions proximal to the ICA in Group A, 27% with lesions at the proximal ICA in Group B, 49% with lesions distal to the visible ICA in Group C, and 16% with unknown causes in Group D...
December 15, 2016: Acta Neurologica Taiwanica
https://www.readbyqxmd.com/read/28368344/the-combination-of-micro-diaphragm-pumps-and-flow-sensors-for-single-stroke-based-liquid-flow-control
#7
Christoph Jenke, Jaume Pallejà Rubio, Sebastian Kibler, Johannes Häfner, Martin Richter, Christoph Kutter
With the combination of micropumps and flow sensors, highly accurate and secure closed-loop controlled micro dosing systems for liquids are possible. Implementing a single stroke based control mode with piezoelectrically driven micro diaphragm pumps can provide a solution for dosing of volumes down to nanoliters or variable average flow rates in the range of nL/min to μL/min. However, sensor technologies feature a yet undetermined accuracy for measuring highly pulsatile micropump flow. Two miniaturizable in-line sensor types providing electrical readout-differential pressure based flow sensors and thermal calorimetric flow sensors-are evaluated for their suitability of combining them with mircopumps...
April 3, 2017: Sensors
https://www.readbyqxmd.com/read/28367084/interrelationship-between-insulin-resistance-and-portal-haemodynamic-abnormality-in-cirrhosis
#8
Hitoshi Maruyama, Kazufumi Kobayashi, Soichiro Kiyono, Osamu Yokosuka
Background: There are only limited data regarding the effect of impaired portal circulation on the glucose metabolism. The study prospectively examined the interrelationship between insulin resistance (IR) and portal haemodynamic abnormality in cirrhosis. Methods: There were 53 cirrhosis patients (61.6 ± 13.0 years) all presenting gastroesophageal varices. Portal haemodynamics by both hepatic venous catheterisation and Doppler ultrasound were examined with respect to the homeostasis model assessment (HOMA)-IR and HOMA2-IR...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28356654/disordered-voluntary-cough-as-freezing-phenomenon-in-parkinsonism
#9
Mitsuaki Ishii, Hideaki Mashimo
[Purpose] In patients with parkinsonism, the precise mechanism of impaired voluntary cough remains poorly understood. This study used the flow-volume curve to clarify whether disordered voluntary cough reflects the freezing phenomenon. [Subjects and Methods] Case 1 was a 58-year-old female who had been suffering from progressive supranuclear palsy-pure akinesia with gait freezing. Case 2 was a 59-year-old female who had advanced juvenile parkinsonism. The subjects were asked to take a deep inspiration to the total lung capacity and then cough more than five times through the face mask into the spirometer without intervening inspirations between the coughing efforts...
March 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28319252/physiologic-reduction-of-hepatic-venous-blood-flow-by-the-valsalva-maneuver-decreases-liver-stiffness
#10
Selcan Ipek-Ugay, Heiko Tzschätzsch, Jürgen Braun, Thomas Fischer, Ingolf Sack
OBJECTIVES: Liver stiffness increases after intake of food or water, suggesting that hepatic venous blood flow affects the results of elastographic measurements. This study investigated the correlation between in vivo liver stiffness and hepatic blood flow using the Valsalva maneuver for reducing intrahepatic venous blood flow. METHODS: Intrahepatic changes in venous blood flow were assessed by sonography based on the pulsed wave Doppler velocity, vessel diameter assessment, and blood flow volume measurements in the portal vein and right hepatic vein...
March 20, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28288599/clinical-use-of-computational-modeling-for-surgical-planning-of-arteriovenous-fistula-for-hemodialysis
#11
Michela Bozzetto, Stefano Rota, Valentina Vigo, Francesco Casucci, Carlo Lomonte, Walter Morale, Massimo Senatore, Luigi Tazza, Massimo Lodi, Giuseppe Remuzzi, Andrea Remuzzi
BACKGROUND: Autogenous arteriovenous fistula (AVF) is the best vascular access (VA) for hemodialysis, but its creation is still a critical procedure. Physical examination, vascular mapping and doppler ultrasound (DUS) evaluation are recommended for AVF planning, but they can not provide direct indication on AVF outcome. We recently developed and validated in a clinical trial a patient-specific computational model to predict pre-operatively the blood flow volume (BFV) in AVF for different surgical configuration on the basis of demographic, clinical and DUS data...
March 14, 2017: BMC Medical Informatics and Decision Making
https://www.readbyqxmd.com/read/28273361/transcatheter-aortic-valve-implantation-improves-carotid-and-vertebral-arterial-blood-flow-in-patients-with-severe-aortic-stenosis-practical-role-of-orthostatic-stress-test
#12
Pawel Kleczyński, Pawel Petkow Dimitrow, Artur Dziewierz, Andrzej Surdacki, Dariusz Dudek
BACKGROUND: There are no data on the impact of transcatheter aortic valve implantation (TAVI) on carotid and vertebral arterial blood flow. Our aim was to assess the effects of the orthostatic stress test on carotid and vertebral artery blood flow in patients with severe aortic stenosis (AS) undergoing TAVI. HYPOTHESIS: TAVI may have beneficial effect on carotid and vertebral artery flow in patients with severe aortic stenosis. METHODS: Thirty carefully selected patients with severe AS undergoing TAVI were enrolled...
March 8, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28259372/-gas-tamponade-following-intraoperative-pneumothorax-on-a-single-lung-a-case-study
#13
S D El Jaouhari, O Mamane Nassirou, M Meziane, M Bensghir, C Haimeur
Intraoperative pneumothorax is a rare complication with a high risk of cardiorespiratory arrest by gas tamponade especially on a single lung. We report the case of a female patient aged 53 years who benefited from a left pneumonectomy on pulmonary tuberculosis sequelae. The patient presented early postoperative anemia with a left hemothorax requiring an emergency thoracotomy. In perioperative, the patient had a gas tamponade following a pneumothorax of the remaining lung, and the fate has been avoided by an exsufflation...
April 2017: Revue de Pneumologie Clinique
https://www.readbyqxmd.com/read/28247411/reversed-aqueductal-cerebrospinal-fluid-net-flow-in-idiopathic-normal-pressure-hydrocephalus
#14
L K Yin, J J Zheng, L Zhao, X Z Hao, X X Zhang, J Q Tian, K Zheng, Y M Yang
OBJECTIVES: The changes of CSF flow dynamics in idiopathic normal pressure hydrocephalus (iNPH) are not fully elucidated. Most previous studies took the whole cardiac cycle as a unit. In this work, it is divided into systole and diastole phase and compared between iNPH patients and normal elderly and paid special attention to the change of netflow direction. MATERIALS AND METHODS: Twenty iNPH patients according to international guideline and twenty healthy volunteers were included in this study and examined by MRI...
March 1, 2017: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/28241312/changes-in-retinal-microcirculation-after-intravitreal-ranibizumab-injection-in-eyes-with-macular-edema-secondary-to-branch-retinal-vein-occlusion
#15
Marie Fukami, Takeshi Iwase, Kentaro Yamamoto, Hiroki Kaneko, Shunsuke Yasuda, Hiroko Terasaki
Purpose: To evaluate the effects of an intravitreal ranibizumab (IVR) injection on the retinal microcirculation of eyes with macular edema secondary to a branch retinal vein occlusion (BRVO). Methods: Twenty-six eyes of 26 patients with macular edema due to a BRVO that had received a single IVR injection (0.5 mg/0.05 mL) were studied. The retinal microcirculation was assessed by laser speckle flowgraphy (LSFG) using the mean blur rate (MBR) and relative flow volume (RFV)...
February 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28240794/phase-contrast-mr-flow-imaging-a-tool-to-determine-hepatic-hemodynamics-in-rats-with-a-healthy-fibrotic-or-cirrhotic-liver
#16
Denise Schaffner, Dominik von Elverfeldt, Peter Deibert, Adhara Lazaro, Irmgard Merfort, Lisa Lutz, Jakob Neubauer, Manfred W Baumstark, Wolfgang Kreisel, Wilfried Reichardt
PURPOSE: To test a magnetic resonance (MR) scanning protocol as a noninvasive tool to determine hepatic hemodynamics and to assess the degree of liver fibrosis in an animal model of liver fibrosis and cirrhosis. MATERIALS AND METHODS: Fifty-four male Wistar rats were studied. Thirty-nine received thioacetamide (TAA) in their drinking water for either 12 or 16 weeks. MR measurements were performed using flow-sensitive 2D phase-contrast MRI and a 9.4T preclinical scanner...
February 27, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28215686/transrectal-doppler-sonography-of-uterine-blood-flow-in-ewes-during-pregnancy
#17
Renato Travassos Beltrame, Carolina Covre, Lucas Buss Littig, Amanda de Barros Martins, Celia Raquel Quirino, Aylton Bartholazzi Junior, Ricardo Lopes Dias da Costa
In sheep, there is a lack of information on the behaviour of hemodynamic indices and parameters of blood flow velocity of the uterine artery during pregnancy, making it impossible to determine the real meaning of the values found and their probable relevance in normal physiological or pathological states. The objective of the present study was to evaluate the blood flow velocity parameters and hemodynamic indices of the uterine artery in ewes (18) during pregnancy (33). Based on non-invasive colour Doppler sonography, we evaluated the peak systolic velocity (PS), end diastolic velocity (ED), time-averaged maximum and minimum velocity in a cardiac cycle (TAMAX and TAMEAN), pulsatility index (PI), resistance index (RI), systolic/diastolic ratio (S/D), heart rate (HR), arterial diameter (AD) and the blood flow volume (BFV)...
March 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28214133/dynamic-hyperinflation-in-patients-with-asthma-and-exercise-induced-bronchoconstriction
#18
Olga Mediano, Raquel Casitas, Carlos Villasante, Elisabet Martínez-Cerón, Raúl Galera, Ester Zamarrón, Francisco García-Río
BACKGROUND: Little is known about the behavior of operative lung volumes during exercise in patients with asthma and exercise-induced bronchoconstriction (EIB). OBJECTIVE: To compare the presence of dynamic hyperinflation (DH) in patients with mild asthma with and without EIB and in healthy individuals and to relate the changes in end-expiratory lung volume (EELV) with postexercise airflow reduction. METHODS: A total of 122 consecutive stable patients (>12 years of age) with mild asthma and 38 controls were studied...
April 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28212451/relationship-between-pre-anesthetic-and-intra-anesthetic-airway-resistance-in-patients-undergoing-general-anesthesia-a-prospective-observational-study
#19
Takamitsu Ikeda, Kanji Uchida, Yasuhiro Yamauchi, Takahide Nagase, Koji Oba, Yoshitsugu Yamada
Surgery patients in Japan undergo routine spirometry testing prior to general anesthesia. The use of a flow sensor during general anesthesia has recently become common. However, it is not certain whether the information derived from flow-volume curves is being adequately used for mechanical ventilation management during general anesthesia. So far, there have been no attempts to calculate airway resistance using flow-volume curves. Therefore, we performed a prospective, observational study to investigate the relationship between pre-anesthetic and intra-anesthetic airway resistance in patients scheduled for surgery under general anesthesia...
2017: PloS One
https://www.readbyqxmd.com/read/28210495/reproducibility-of-pulmonary-blood-flow-measurements-by-phase-contrast-mri-using-different-1-5-t-mr-scanners-at-two-institutions
#20
Rin Iraha, Nanae Tsuchiya, Tsuneo Yamashiro, Tae Iwasawa, Sadayuki Murayama
BACKGROUND: Magnetic resonance imaging (MRI) can be beneficial for diagnosis of disease by offering quantitative information. However, reproducibility can be a major problem when there is a numerical threshold in multi-institution, multi-vendor situations. PURPOSE: To measure pulmonary blood flow with phase-contrast (PC) imaging using two different MR scanners (1.5 T) at different institutions in the same participants and to examine the reproducibility of the measurements...
January 2017: Acta Radiologica Open
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