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https://www.readbyqxmd.com/read/29793097/quantitative-assessment-of-placental-perfusion-by-three-dimensional-power-doppler-ultrasound-for-twins-with-selective-intrauterine-growth-restriction-in-one-twin
#1
Wei Sun, Jingyi Liu, Ying Zhang, Ailu Cai, Zeyu Yang, Yili Zhao, Yu Wang, Zhe Cao, Qiuju Wei
OBJECTIVE: We quantitatively assessed placental perfusion using three-dimensional (3D) power Doppler ultrasound for twins with selective intrauterine growth restriction (sIUGR) in one twin. STUDY DESIGN: A prospective cross-sectional study was performed for 104 normal monochorionic diamniotic twins and 30 twins with sIUGR. Twins with sIUGR were divided into two groups: in group I (19 twins), both fetuses had continuous forward end-diastolic blood flow in the umbilical artery; in group II (11 twins), the smaller fetus had a loss or a reverse end-diastolic blood flow in the umbilical artery, but the larger fetus had continuous forward end-diastolic blood flow...
May 17, 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29784437/jugular-venous-flow-quantification-using-doppler-sonography
#2
Karen Marr, Dejan Jakimovski, Marcello Mancini, Ellen Carl, Robert Zivadinov
A consensus on venous flow quantification using echo spectral Doppler sonography is lacking. Doppler sonography data from 83 healthy individuals were examined using manually traced transverse cross-sectional area and diameter-derived cross-sectional area obtained in longitudinal view measurements of the internal jugular vein. Time-averaged velocity over a 4-s interval was obtained in the longitudinal plane using manual tracing of the waveform. Manual and computer-generated blood flow volume calculations were also obtained for the common carotid artery, for accuracy purposes...
May 18, 2018: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29782663/prospective-study-confirms-that-bronchiolitis-in-early-infancy-increases-the-risk-of-reduced-lung-function-at-10-13-years-of-age
#3
Riikka Riikonen, Eero Lauhkonen, Sari Törmänen, Katri Backman, Petri Koponen, Merja Helminen, Kirsi Nuolivirta, Matti Korppi
AIM: This study evaluated children hospitalised for bronchiolitis at less than six months of age to see if they had reduced lung function in early adolescence. METHODS: We have prospectively followed 166 children hospitalised for infant bronchiolitis in 2001-2004 at Tampere University Hospital, Finland. At 10-13 years of age, flow-volume spirometry was measured in 89 cases and 108 controls without infant bronchiolitis from the local population register. Parameters of flow-volume spirometry before and after bronchodilation were analysed...
May 21, 2018: Acta Paediatrica
https://www.readbyqxmd.com/read/29781111/assessment-of-hemodynamic-alterations-in-cerebral-veins-in-patients-with-intracerebral-hemorrhage-using-duplex-color-coded-sonography
#4
Zhan-Qiang Jin, Hao Feng, Wen He, Xing-Quan Zhao
OBJECTIVES: To investigate the contributions of hemodynamic alterations in cerebral veins to the prognosis of patients with primary intracerebral hemorrhage (ICH). METHODS: Duplex color-coded sonography was performed on 87 ICH patients between July 2016 and October 2017. The time-averaged peak velocity, the time-averaged mean velocity (TAMV), the blood flow volume (BFV) of bilateral internal jugular veins (IJVs) and vertebral veins (VVs), and the mean velocities of bilateral basal veins of Rosenthal, straight sinus, and bilateral transverse sinuses were calculated to understand the relationship of hemodynamic data with prognosis in patients with ICH...
May 21, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29779592/pulmonary-function-testing-in-neuromuscular-and-chest-wall-disorders
#5
REVIEW
Eric J Gartman
Neuromuscular and chest wall disorders frequently compromise pulmonary function, and thorough respiratory evaluation often can assist in diagnosis, risk assessment, and prognosis. Because many of these disorders can be progressive, serial assessments are necessary to best define a trajectory of impairment (or improvement with therapy). This article covers the major respiratory testing modalities available in the evaluation of these patients, emphasizing both the benefits and shortcomings of each approach. Most parameters are available in a standard pulmonary laboratory (flows, volumes, static pressures), although referral to a specialized center may be necessary to conclusively evaluate a given patient...
June 2018: Clinics in Chest Medicine
https://www.readbyqxmd.com/read/29757425/four-dimensional-flow-mri-analysis-of-cerebral-blood-flow-before-and-after-high-flow-extracranial-intracranial-bypass-surgery-with-internal-carotid-artery-ligation
#6
Erika Orita, Yasuo Murai, Tetsuro Sekine, Ryo Takagi, Yasuo Amano, Takahiro Ando, Kotomi Iwata, Makoto Obara, Shinichiro Kumita
BACKGROUND: The hemodynamic changes that occur after high-flow (extracranial-intracranial) EC-IC bypass surgery with internal carotid artery (ICA) ligation are not well known. OBJECTIVE: To assess blood flow changes after high-flow EC-IC bypass with ICA ligation by time-resolved 3-dimensional phase-contrast (4D Flow) magnetic resonance imaging (MRI). METHODS: We enrolled 11 patients who underwent high-flow EC-IC bypass. 4D Flow MRI was performed before and after surgery to quantify the blood flow volume (BFV) of the ipsilateral ICA (BFViICA), bypass artery (BFVbypass), contralateral ICA (BFVcICA), and basilar artery (BFVBA)...
May 11, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29754713/endoscopic-partial-arytenoidectomy-for-bilateral-vocal-fold-paralysis-medially-based-mucosal-flap-technique
#7
Taner Yılmaz
PURPOSE: Endoscopic partial arytenoidectomy (EPA) is one of the static operations for treatment of bilateral vocal fold paralysis (BVFP). Improvement in airway may cause voice loss and aspiration. The author reports his experience on EPA using medially based mucosal flap to enlarge posterior glottis without removing any part of membranous vocal fold. MATERIALS AND METHODS: Sixty-four consecutive patients with BVFP underwent EPA. Pre- and postoperative evaluations included Voice Handicap Index-30, aerodynamic and acoustic analysis, flow volume loops, perceptual evaluation of pre- and postoperative voice using grade, roughness, breathiness, asthenia, strain (GRBAS) scale, speech intensity, breathing ability evaluation, and functional outcome swallowing scale...
May 10, 2018: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/29752712/maternal-diabetes-alters-the-development-of-ductus-venosus-shunting-in-the-fetus
#8
Agnethe Lund, Cathrine Ebbing, Svein Rasmussen, Torvid W Kiserud, Jörg Kessler
INTRODUCTION: Despite adequate glycemic control, the risks of fetal macrosomia and perinatal complications are increased in diabetic pregnancies. Adjustments of the umbilical venous (UV) distribution, including increased ductus venosus (DV) shunting, can be important fetal compensatory mechanisms, but the impact of pregestational diabetes on UV and DV flow is not known. MATERIAL AND METHODS: In this prospective study, 49 women with pregestational diabetes mellitus underwent monthly ultrasound examinations from gestational week 20 to 36...
May 11, 2018: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/29747091/effect-of-herbal-medicine-daikenchuto-on-oral-and-enteral-caloric-intake-after-liver-transplantation-a-multicenter-randomized-controlled-trial
#9
Toshimi Kaido, Masahiro Shinoda, Yukihiro Inomata, Takahito Yagi, Nobuhisa Akamatsu, Yasutsugu Takada, Hideki Ohdan, Tsuyoshi Shimamura, Yasuhiro Ogura, Susumu Eguchi, Hidetoshi Eguchi, Satoshi Ogata, Tomoharu Yoshizumi, Toshihiko Ikegami, Michio Yamamoto, Satoshi Morita, Shinji Uemoto
OBJECTIVE: Postoperative early oral or enteral intake is a crucial element of the Enhanced Recovery After Surgery (ERAS) protocol. However, normal food intake or enteral feeding cannot be started early in the presence of coexisting bowel dysfunction in patients undergoing liver transplantation (LT). The aim of this multicenter, randomized, double-blinded, placebo-controlled trial was to determine the enhancement effects of the Japanese herbal medicine Daikenchuto (DKT) on oral/enteral caloric intake in patients undergoing LT...
March 20, 2018: Nutrition
https://www.readbyqxmd.com/read/29726778/hemodynamic-characteristics-associated-with-cerebral-aneurysm-formation-in-patients-with-carotid-occlusion
#10
Sophia F Shakur, Ali Alaraj, Nasya Mendoza-Elias, Muhammad Osama, Fady T Charbel
OBJECTIVE The pathogenesis of cerebral aneurysms in patients with internal carotid artery (ICA) occlusion is hypothesized to be hemodynamic. For the first time, the authors quantify the hemodynamic characteristics associated with aneurysm formation in patients with ICA occlusion. METHODS Records of patients with unilateral ICA stenosis or occlusion ≥ 90% who underwent hemodynamic assessment before treatment using quantitative MR angiography were retrospectively reviewed. The patients were classified into 2 groups based on the presence or absence of aneurysms...
May 4, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29709819/evaluation-of-simultaneous-organic-matters-and-nutrients-removal-from-municipal-wastewater-using-a-novel-bioreactor-d-a-2-o-system
#11
Changbing Ye, Zhiming Zhou, Ming Li, Qin Liu, Tiantian Xu, Jia Li
A novel bioreactor, the divisional influent dual-anaerobic-anoxic/oxic (D-A2 O) system, was applied to treat municipal wastewater. This new system improved the removal efficiency of simultaneous organic matters and nutrients, and provided a reduction in the system's energy costs and sludge yield. Results from the reactor's 18 months of operation demonstrated the following optimal conditions for the 4 key parameters of the system: (1) a divisional ratio (DR) of 8:2 between the influent flow volumes fed into the anaerobic and anoxic tanks, (2) a hydraulic retention time (HRT) of 6 h, (3) a R:r ratio of 200%:100% between the mixed liquor return ratio (R) and the return activated sludge ratio (r), and (4) an alternative operating time (tA/B ) of 1 h for the A/B anaerobic-anoxia series...
April 27, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29707200/evaluation-of-portal-pressure-by-doppler-ultrasound-in-patients-with-cirrhosis-before-and-after-simvastatin-administration-a-randomized-controlled-trial
#12
Nadia Elwan, Raafat Salah, Manal Hamisa, Ebtsam Shady, Nehad Hawash, Sherief Abd-Elsalam
Background: Portal hypertension is one of the most frequent complications of cirrhosis. β-adrenergic blockers, with or without organic nitrates, are currently used as hypotensive agents. Statins such as simvastatin seem to be safe for patients with chronic liver diseases and exert multiple pleiotropic actions. This study aimed to assess PTH using Doppler ultrasound in patients with cirrhosis before and after simvastatin administration. Methods: This randomized controlled clinical trial was conducted on 40 patients with cirrhosis who were randomized into 2 groups: group I included 20 patients with cirrhosis who were administered 20 mg of simvastatin daily for 2 weeks and then 40 mg daily for another 2 weeks, and group II included 20 patients with cirrhosis who did not receive simvastatin as a control group...
2018: F1000Research
https://www.readbyqxmd.com/read/29695900/the-link-between-chronic-obstructive-pulmonary-disease-phenotypes-and-histological-subtypes-of-lung-cancer-a-case-control-study
#13
Wei Wang, Mengshuang Xie, Shuang Dou, Liwei Cui, Chunyan Zheng, Wei Xiao
Background: COPD is considered an independent risk factor for lung cancer. COPD and lung cancer are both very heterogeneous diseases, and the study herein investigates the link between COPD phenotypes and specific histological subtypes of lung cancer. Methods: This case-control study comprised 2,283 patients with newly diagnosed pathological lung cancer and 2,323 non-lung cancer controls. All participants underwent pulmonary function tests. The diagnosis of COPD was based on Global Initiative for Chronic Obstructive Lung Disease criteria...
2018: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29688482/lumboperitoneal-shunts-for-the-treatment-of-idiopathic-normal-pressure-hydrocephalus-a-comparison-of-small-lumen-abdominal-catheters-to-gravitational-add-on-valves-in-a-single-center
#14
Madoka Nakajima, Masakazu Miyajima, Chihiro Akiba, Ikuko Ogino, Kaito Kawamura, Hidenori Sugano, Takeshi Hara, Yuichi Tange, Keiko Fusegi, Kostadin Karagiozov, Hajime Arai
BACKGROUND: Treating idiopathic normal pressure hydrocephalus (iNPH) with lumboperitoneal shunts (LPSs) may cause cerebrospinal fluid (CSF) overdrainage. OBJECTIVE: To investigate whether LPSs, including gravitational "add-on" and programmable pressure valves (PPVs/+GVs), reduce complications and improve outcomes. METHODS: We compared PPVs/+small lumen abdominal catheters (SLs) to PPVs/+GVs using different opening pressures for supine and standing positions...
April 23, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29680175/three-year-patency-and-recurrence-rates-of-revision-using-distal-inflow-with-a-venous-interposition-graft-for-high-flow-brachial-artery-based-arteriovenous-fistula
#15
Michael W M Gerrickens, Roel H D Vaes, Bastiaan Govaert, Magda van Loon, Jan H M Tordoir, Frank van Hoek, Joep A W Teijink, Marc R Scheltinga
OBJECTIVES: Upper arm arteriovenous fistulas (AVF) occasionally develop high flow. Revision using distal inflow (RUDI) effectively reduces flow of high flow accesses (HFA) in the short-term and is also popularised for treatment of haemodialysis access induced distal ischaemia (HAIDI). The long-term efficacy is unknown. The study's aim was to report on 3 year RUDI patency and recurrence rates for HFA with and without HAIDI. MATERIAL AND METHODS: This was a retrospective cohort study of patients with a HFA with or without HAIDI undergoing RUDI using greater saphenous vein (GSV) interposition between March 2011 and October 2017 at three facilities...
April 18, 2018: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29670388/colonic-transit-time-and-pressure-based-on-bernoulli-s-principle
#16
Yoshiharu Uno
Purpose: Variations in the caliber of human large intestinal tract causes changes in pressure and the velocity of its contents, depending on flow volume, gravity, and density, which are all variables of Bernoulli's principle. Therefore, it was hypothesized that constipation and diarrhea can occur due to changes in the colonic transit time (CTT), according to Bernoulli's principle. In addition, it was hypothesized that high amplitude peristaltic contractions (HAPC), which are considered to be involved in defecation in healthy subjects, occur because of cecum pressure based on Bernoulli's principle...
2018: Clinical and Experimental Gastroenterology
https://www.readbyqxmd.com/read/29618801/respiration-and-the-watershed-of-spinal-csf-flow-in-humans
#17
Steffi Dreha-Kulaczewski, Mareen Konopka, Arun A Joseph, Jost Kollmeier, Klaus-Dietmar Merboldt, Hans-Christoph Ludwig, Jutta Gärtner, Jens Frahm
The dynamics of human CSF in brain and upper spinal canal are regulated by inspiration and connected to the venous system through associated pressure changes. Upward CSF flow into the head during inspiration counterbalances venous flow out of the brain. Here, we investigated CSF motion along the spinal canal by real-time phase-contrast flow MRI at high spatial and temporal resolution. Results reveal a watershed of spinal CSF dynamics which divides flow behavior at about the level of the heart. While forced inspiration prompts upward surge of CSF flow volumes in the entire spinal canal, ensuing expiration leads to pronounced downward CSF flow, but only in the lower canal...
April 4, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29595881/the-influence-of-thoracic-gas-compression-and-airflow-density-dependence-on-the-assessment-of-pulmonary-function-at-high-altitude
#18
Troy J Cross, Courtney Wheatley, Glenn M Stewart, Kirsten Coffman, Alex Carlson, Jan Stepanek, Norman R Morris, Bruce D Johnson
The purpose of this report was to illustrate how thoracic gas compression (TGC) artifact, and differences in air density, may together conflate the interpretation of changes in the forced expiratory flows (FEFs) at high altitude (>2400 m). Twenty-four adults (10 women; 44 ± 15 year) with normal baseline pulmonary function (>90% predicted) completed a 12-day sojourn at Mt. Kilimanjaro. Participants were assessed at Moshi (Day 0, 853 m) and at Barafu Camp (Day 9, 4837 m). Typical maximal expiratory flow-volume (MEFV) curves were obtained in accordance with ATS/ERS guidelines, and were either: (1) left unadjusted; (2) adjusted for TGC by constructing a "maximal perimeter" MEFV curve; or (3) adjusted for both TGC and differences in air density between altitudes...
March 2018: Physiological Reports
https://www.readbyqxmd.com/read/29590412/screening-spirometry-in-military-personnel-correlates-poorly-with-exercise-tolerance-and-asthma-history
#19
David M F Anderson, Nicholas R Ondrasik, Frederic A Rawlins, Joshua A Lospinoso, Thomas B Zanders, Michael J Morris
BACKGROUND: Spirometry is an easy-to-perform test for evaluating pulmonary symptoms but has several limitations to include adequate test performance for valid results. Spirometry is not recommended to screen a general population for evidence of pulmonary disease unless symptoms are present or longitudinal screening is done for potential occupational exposures. METHODS: A single-spirometry examination was performed on 900 active duty Army soldiers, ages 18-35 yr, without documented respiratory disease...
March 26, 2018: Military Medicine
https://www.readbyqxmd.com/read/29550273/effect-of-exogenous-estradiol-benzoate-on-uterine-blood-flow-in-postpartum-dairy-cows
#20
Mohamed Rawy, Shogo Mido, Hossam El-Sheikh Ali, Derar Derar, Gaber Megahed, Go Kitahara, Takeshi Osawa
The objective of this study was to assess the uterine blood flow following estradiol benzoate administration in Holstein-Friesian dairy cows by trans-rectal color Doppler ultrasonography. Six healthy lactating Holstein-Friesian cows were examined daily for 10 days starting at 4 weeks postpartum. All the cows, which were clinically healthy based on vaginal mucus scoring and endometrial cytology, were examined by trans-rectal Doppler ultrasonography to measure pulsatility index (PI), resistance index (RI), time average maximum velocity (TAMAX), blood flow volume (BFV) and diameter in the uterine arteries ipsilateral and contralateral to the previously pregnant uterine horn...
May 2018: Animal Reproduction Science
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