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Resistive index doppler

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https://www.readbyqxmd.com/read/29027695/shear-wave-elastographic-alterations-in-the-kidney-after-extracorporeal-shock-wave-lithotripsy
#1
Rustu Turkay, Ercan Inci, Derya Bas, Arda Atar
OBJECTIVES: Extracorporeal shock wave lithotripsy (ESWL) is a method used frequently for the treatment of renal stone disease. Although its safety is proven, there are still concerns about its unwanted effects on kidneys. In this prospective study, we aimed to evaluate renal tissue alterations with shear wave elastography (SWE) after ESWL. We also studied the correlation between SWE and resistive index (RI) changes. METHODS: The study included 59 patients who underwent ESWL treatment for renal stone disease...
October 13, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29019471/infantile-hemangioma-factors-causing-recurrence-after-propranolol-treatment
#2
Lei Chang, Dongze Lv, Zhang Yu, Gang Ma, Hanru Ying, Yajing Qiu, Yifei Gu, Yunbo Jin, Hui Chen, Xiaoxi Lin
BackgroundPropranolol is the first-choice treatment for severe infantile hemangioma (IH). However, 10- 30% of lesions relapse after propranolol treatment. The mechanisms underlying IH recurrence after propranolol treatment have not been completely elucidated.MethodsThis study combined an examination of hemodynamic changes with research regarding hemangioma stem cells (hscs) with differentially expressed microRNAs (miRNAs) to identify the factors affecting IH recurrence after propranolol treatment. Hemodynamic changes were monitored in 21 recurrent cases using high-frequency color Doppler ultrasound, and hscs were treated with different concentrations of propranolol...
October 11, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28990204/serial-evaluation-of-endometrial-blood-flow-for-prediction-of-pregnancy-outcomes-in-patients-who-underwent-controlled-ovarian-hyperstimulation-and-in-vitro-fertilization-and-embryo-transfer
#3
Hwa Seon Koo, Chan Woo Park, Sun Hwa Cha, Kwang Moon Yang
OBJECTIVES: To investigate endometrial blood flow during the menstrual cycle in patients undergoing controlled ovarian hyperstimulation (COH), in vitro fertilization (IVF), and embryo transfer (ET) and prediction of pregnancy outcomes based on these characteristics. METHODS: Endometrial blood flow was measured in 35 patients undergoing COH and IVF-ET (nonpregnant [n = 15] and pregnant [n = 20]) by measuring the resistive index (RI) of the uterine radial artery using 2-dimensional Doppler ultrasonography...
October 9, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28980052/right-ventricular-tissue-doppler-myocardial-performance-index-in-children-with-pulmonary-hypertension-relation-to-invasive-hemodynamics
#4
Richard M Friesen, Michal Schäfer, Dale A Burkett, Courtney J Cassidy, D Dunbar Ivy, Pei-Ni Jone
Right ventricular (RV) failure is a significant cause of morbidity and mortality in patients with pulmonary hypertension (PH). Myocardial performance index measured by tissue Doppler imaging (TDI-MPI) has been useful in assessing RV dysfunction in adults with PH. However, TDI-MPI as a marker for RV dysfunction or disease severity has not been evaluated in pediatric PH. The aim of this study was to investigate TDI-MPI and correlate with invasive hemodynamics in pediatric PH patients. Eighty pediatric PH patients undergoing cardiac catheterization and simultaneous transthoracic echocardiography were analyzed...
October 4, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28974877/pre-operative-hepatic-artery-resistive-index-is-a-non-invasive-predictive-indicator-of-prognosis-in-biliary-atresia
#5
Deepak Mittal, Veereshwar Bhatnagar, Sandeep Agarwala, Maddur Srinivas, Manisha Jana, Arun Kumar Gupta, Nibhriti Das, Manoj Kumar Singh
AIMS: The aim of this study is to evaluate hepatic artery resistive index (HARI) as a noninvasive prognostic predictor by correlating it with peripheral blood nitric oxide (NO) levels, portal pressure (PP) and histopathological changes in the liver in patients of biliary atresia (BA). MATERIALS AND METHODS: Twenty-five patients were included in the study prospectively from November 2012 to June 2014. All patients underwent Doppler sonography to calculate the HARI preoperatively...
October 2017: Journal of Indian Association of Pediatric Surgeons
https://www.readbyqxmd.com/read/28973374/effects-of-intravitreal-dexamethasone-implants-on-retinal-oxygen-saturation-vessel-diameter-and-retrobulbar-blood-flow-velocity-in-me-secondary-to-rvo
#6
Katharina Eibenberger, Leopold Schmetterer, Sandra Rezar-Dreindl, Piotr Wozniak, Reinhard Told, Georgios Mylonas, Christoph Krall, Ursula Schmidt-Erfurth, Stefan Sacu
Purpose: To investigate the effects of intravitreal 0.7 mg dexamethasone implants (Ozurdex) on arterial and venous oxygen saturation, retinal vessel diameter, and retrobulbar blood flow velocity in patients with macular edema (ME) due to retinal vein occlusion (RVO). Methods: This prospective, nonrandomized clinical trial included 40 eyes of 40 patients with ME due to RVO. Measurements of arterial and venous oxygen saturation and retinal vessel diameters were performed using the Dynamic Vessel Analyzer...
October 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28969484/combined-measurement-of-fetal-lung-volume-and-pulmonary-artery-resistance-index-is-more-accurate-for-prediction-of-neonatal-respiratory-distress-syndrome-in-preterm-fetuses-a-pilot-study
#7
Mohamed Laban, Ghada Mansour, Ahmed El-Kotb, Alaa Hassanin, Zina Laban, Abdelrahman Saleh
OBJECTIVE: To estimate optimal cut-off values for mean fetal lung volume (FLV) and pulmonary artery resistance index (PA-RI) as noninvasive measures to predict neonatal respiratory distress syndrome (RDS) in preterm fetuses. METHODS: A prospective study conducted at Ain Shams University Maternity Hospital, Egypt from May 2015 to July 2017: eighty eligible women diagnosed with preterm labor were recruited at 32-36 weeks' gestation. Before delivery, three-dimensional ultrasound was used to estimate FLV using virtual organ computer-aided analysis (VOCAL), while PA-RI was measured by Doppler ultrasonography...
October 2, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28966042/pregnancy-in-women-with-corrected-aortic-coarctation-uteroplacental-doppler-flow-and-pregnancy-outcome
#8
Anne S Siegmund, Marlies A M Kampman, Caterina M Bilardo, Ali Balci, Arie P J van Dijk, Martijn A Oudijk, Barbara J M Mulder, Jolien W Roos-Hesselink, Gertjan Tj Sieswerda, Steven V Koenen, Krystyna M Sollie-Szarynska, Tjark Ebels, Dirk J van Veldhuisen, Petronella G Pieper
OBJECTIVE: Women with repaired coarctation of the aorta (rCoA) are at risk of hypertensive disorders and other complications during pregnancy. Hypertensive disorders in pregnant women are associated with inadequate uteroplacental flow, which is related to adverse offspring outcome. The aim of this study was to investigate the relationship of maternal cardiac function, placental function and pregnancy complications in women with rCoA. METHODS: We included 49 pregnant women with rCoA and 69 controls from the prospective ZAHARA-studies (Zwangerschap bij Aangeboren HARtAfwijkingen, pregnancy in congenital heart disease)...
September 22, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28960438/evaluating-a-targeted-bedside-measure-of-cerebral-perfusion-in-a-nonhuman-primate-model-of-neonatal-hypoxic-ischemic-encephalopathy
#9
Eric S Peeples, Chikodinaka K Ezeokeke, Sandra E Juul, Pierre D Mourad
OBJECTIVES: To compare ultrasound-derived resistive indices (RIs) obtained at the level of the thalamus via fast Doppler ultrasound with traditional anterior cerebral artery measures in a model of neonatal hypoxic-ischemic encephalopathy and to correlate each with clinical outcomes. METHODS: Nine nonhuman primate neonates underwent no umbilical cord occlusion (n = 3), umbilical cord occlusion without hypothermia (n = 3), or umbilical cord occlusion with hypothermia (n = 3)...
September 29, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28954334/-pregnancy-outcome-of-planning-pregnancies-in-patients-with-sle
#10
Z P Zhan, Y F Zhan, Y Yang, D Y Chen, L Q Liang, X Y Yang
Objectives: To investigate the pregnancy outcomes in systemic lupus erythematosus (SLE) patients with planning pregnancy.And to evaluate the value of fetal umbilical artery Doppler. Methods: A total of 130 SLE patients with planning pregnancy were prospectively recruited from January 2013 to January 2017 at the First Affiliated Hospital of Sun Yat-sen University. Results: Thirty eight (29.2%) patients had active lupus, 30 with mild activity, 5 with moderate activity and 3 with severe activity.Active disease in the first, second and third trimesters occurred in 6, 11 and 21 cases respectively...
September 19, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28950911/assessment-of-intracranial-vessels-in-association-with-carotid-atherosclerosis-and-brain-vascular-lesions-in-rheumatoid-arthritis
#11
Csaba Oláh, Zsófia Kardos, Mariann Sepsi, Attila Sas, László Kostyál, Harjit Pal Bhattoa, Katalin Hodosi, György Kerekes, László Tamási, Attila Valikovics, Dániel Bereczki, Zoltán Szekanecz
BACKGROUND: Stroke has been associated with rheumatoid arthritis (RA). We assessed patients with RA and healthy control subjects by transcranial Doppler (TCD), carotid ultrasonography and brain magnetic resonance imaging (MRI). METHODS: Altogether, 41 female patients with RA undergoing methotrexate (MTX) or biologic treatment and 60 age-matched control subjects underwent TCD assessment of the middle cerebral artery (MCA) and basilar artery. Pulsatility index (PI), resistivity (resistance) index (RI) and circulatory reserve capacity (CRC) were determined at rest (r) and after apnoea (a) and hyperventilation (h)...
September 26, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28950833/alphavbeta3-integrin-expression-within-uterine-endometrium-in-unexplained-infertility-a-prospective-cohort-study
#12
Ahmed Elnaggar, Amr H Farag, Mohamed E Gaber, Mohamed Abdel Hafeez, Mohamed S Ali, Alaa M Atef
BACKGROUND: Implantation defect is one of these contributing factors for unexplained infertility. In the mid-luteal phase, when implantation is expected to happen, Integrins expression is remarkably increased. So, Integrins could potentially serve as markers for the frame of the window of implantation. αVβ3 integrin could have a role as a potential receptor for embryonic attachment. The aim of the current study is to investigate whether the women with unexplained infertility have a pattern of expression of endometrial αvβ3 integrin that could differ from those who have normal fertility or not...
September 26, 2017: BMC Women's Health
https://www.readbyqxmd.com/read/28949275/assessment-of-cerebrovascular-development-and-intraventricular-hemorrhages-in-preterm-infants-with-optical-measures-of-the-brain-arterial-pulse-wave
#13
Antonio M Chiarelli, Mahdi Mahmoudzadeh, Kathy A Low, Edward L Maclin, Guy Kongolo, Sabrina Goudjil, Monica Fabiani, Fabrice Wallois, Gabriele Gratton
Preterm infants (born at 24-34 weeks of gestational age) suffer from a high incidence of neurological complications. Cerebrovascular lesions (intraventricular hemorrhages, IVH, and ischemic injury) due to the immaturity of the vascular system and its inability to adapt to the extra-uterine environment are the major causes of adverse neurological outcomes. We investigated the feasibility of assessing cerebrovascular status in preterm infants using a novel non-invasive optical procedure, pulse-DOT, usable within the incubator...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28942100/doppler-ultrasonography-can-be-useful-to-determine-the-etiology-of-idiopathic-sudden-sensorineural-hearing-loss
#14
Ahmet Mutlu, Isa Cam, Sinem Dasli, Murat Topdag
OBJECTIVE: This study aims to evaluate clinical features of both carotid and vertebral arteries in the idiopathic sudden sensorineural hearing loss (ISSNHL) patients and healthy individuals to contribute additional knowledge on vascular compromise theory. METHODS: This study was designed as a retrospective case control study in a tertiary referral center. 55 patients for ISSNHL and 35 healthy participants (70 ears) are involved to the study. All of the patients were evaluated for the systemic disorders and excluded other possible causes (autoimmune diseases, acoustic schwannoma, drug toxicity, etc) of ISSNHL...
September 20, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28934833/hemodynamic-analysis-of-radiation-induced-damage-in-common-carotid-arteries-by-using-color-doppler-ultrasonography
#15
Alireza Mohammadkarim, Manijhe Mokhtari-Dizaji, Ali Kazemian, Hazhir Saberi
Purpose: The aim of this study was to assess vascular changes and blood flow abnormalities in the common carotid arteries of patients with head and neck cancers after external radiotherapy, using color Doppler ultrasonography. Methods: We studied 24 patients treated with external radiotherapy for various head and neck cancers. In order to study the acute effects of irradiation on common carotid blood flow and arterial diameter changes, color Doppler ultrasonography parameters such as peak systolic velocity, end diastolic velocity, mean velocity, systolic-to-diastolic velocity (S/D) ratio, pulsatility index (PI), resistive index (RI), and instantaneous diameter changes were evaluated before and after external radiotherapy...
April 14, 2017: Ultrasonography
https://www.readbyqxmd.com/read/28905097/color-doppler-and-spectral-doppler-ultrasound-detection-of-active-sacroiliitis-in-spondyloarthritis-compared-to-physical-examination-as-gold-standard
#16
Concepción Castillo-Gallego, Eugenio De Miguel, Miriam García-Arias, Chamaida Plasencia, Leticia Lojo-Oliveira, Emilio Martín-Mola
Sacroiliac joint (SIJ) involvement is a distinctive feature of spondyloarthritis (SpA). The main objective of this study was to assess the validity of color Doppler ultrasound (CDUS) in SIJ. This was a cross-sectional, blinded, case-control study of 108 cases divided into three groups: (a) 53 SpA patients with inflammatory back pain (IBP); (b) 28 SpA patients with no IBP; and (c) 27 healthy mechanical lumbar pain subjects. Physical examinations of the SIJs were assessed as positive or negative in each SIJ and were used as the gold standard...
September 13, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28904458/can-transcranial-color-doppler-spectral-signatures-be-a-novel-biomarker-for-monitoring-cerebrovascular-autoregulation-and-intracranial-pressure-a-speculative-synthesis
#17
Sandhya Mangalore, Kotresh, Rakshith Srinivasa, Alangar Sathyaranjandas Hegde, Rangashetty Srinivasa
BACKGROUND: Trans Cranial Colour Doppler (TCCD) has been extensively used in various neurological and neurosurgical conditions causing severe raise in the intracranial pressure (ICP). MATERIAL AND METHOD: Our study explores the sequential evolution of TCCD flow pattern by correlating with pupillary reactivity, Glasgow coma scale (GCS), and imaging. Our cohort consisted of thirty patients with ten patients in each subgroup admitted to the neuro-Intensive Care Unit (NICU) for various neurological and neurosurgical causes...
July 2017: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/28902431/cardiovascular-predictors-of-death-in-patients-with-cirrhosis
#18
Maurizio Cesari, Anna Chiara Frigo, Marta Tonon, Paolo Angeli
Cirrhotic cardiomyopathy is associated with poor outcomes in patients with cirrhosis. We investigated if subclinical cardiac morphologic and functional modifications can influence survival in cirrhotic patients during follow-up. A series of cirrhotic patients without cardiovascular or pulmonary disease underwent standard and tissue Doppler echocardiography to assess left ventricular (LV) geometry, systo/diastolic function and the main haemodynamic parameters. After baseline evaluation 115 cirrhotic patients were followed up for at least 6 years...
September 13, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28901515/vulnerability-study-of-myelinated-and-unmyelinated-nerve-fibers-in-acute-ocular-hypertension-in-rabbit
#19
Jiying Shen, Qiang Yang, Daoyi Yu, Jihong Wu, Yuanfang Zhu, Wenyi Guo
In the current study, it was aimed to evaluate the changes in myelinated and unmyelinated nerve fibers in retinal ischemia‑reperfusion injuries caused by acute ocular hypertension and to determine the sequence of these changes. Adult healthy New Zealand white rabbits were randomized to the hemodynamic group [n=12; used to determine the optimal intraocular pressure (IOP) for the subsequent experiments] and the hypertension group (n=6; 70‑mmHg hypertension induced in one eye). IOP was adjusted using a cannula and saline...
September 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28900614/echocardiographic-evaluation-of-pulmonary-pressures-and-right-ventricular-function-after-pediatric-cardiac-surgery-a-simple-approach-for-the-intensivist
#20
REVIEW
Maurice Beghetti
Pulmonary hypertension (PH) is diagnosed using cardiac catheterization and is defined as an elevation of mean pulmonary artery pressure (PAP) greater than 25 mmHg. Although invasive hemodynamics remains the gold standard and is mandatory for disease confirmation, transthoracic echocardiography (TTE) is an extremely useful non-invasive and widely available tool that allows for screening and follow-up, in particular, in the acute setting. TTE may be a valuable alternative, allowing for direct measurement and/or indirect assessment of PAP...
2017: Frontiers in Pediatrics
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