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https://www.readbyqxmd.com/read/28650903/thigh-ultrasound-monitoring-identifies-decreases-in-quadriceps-femoris-thickness-as-a-frequent-observation-in-critically-ill-children
#1
Frederic V Valla, David K Young, Muriel Rabilloud, Uvaraj Periasami, Manoj John, Florent Baudin, Carole Vuillerot, Aurélie Portefaix, Deborah White, Jenna A Ridout, Rosan Meyer, Bénédicte Gaillard Le Roux, Etienne Javouhey, Nazima Pathan
OBJECTIVES: Significant muscle wasting develops in critically ill adults, with subsequent worse outcomes. In the pediatric setting, occurrence and effects of muscle wasting are undescribed; this is in part due to a lack of validated, objective methods for assessing muscle wasting. A single measurement of quadriceps femoris thickness has failed to show consistent reproducibility. We hypothesized that averaging repeated measurements could afford good reproducibility to allow for quadriceps femoris thickness decline detection and monitoring...
June 23, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28648482/comparison-of-intravascular-ultrasound-and-centerline-computed-tomography-determined-aortic-diameters-during-thoracic-endovascular-aortic-repair
#2
Sukgu M Han, Ramsey S Elsayed, Sung W Ham, Anuj Mahajan, Fernando Fleischman, Vincent L Rowe, Mark J Cunningham, Fred A Weaver
BACKGROUND: Accurate sizing of stent grafts during thoracic endovascular aortic repair (TEVAR) is critical for a successful outcome. Centerline measurements using three-dimensional reconstruction of preoperative computed tomography angiography (CTA) is the current standard for stent graft sizing. However, this technique is predicated on an idealized straightened aorta and does not account for the variability in the aortic diameter during the cardiac cycle or the overall status of the patient's volume...
June 22, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28647928/pre-procedural-ultrasonography-for-tracheostomy-in-critically-ill-patients-a-prospective-study
#3
Ella Even-Tov, Itzhak Koifman, Vladimir Rozentsvaig, Leonid Livshits, Peter Gilbey
BACKGROUND: Percutaneous dilatational tracheostomy (PDT) has become a standard technique for critically ill patients who require long-term ventilation. The most common early post-operative complication is bleeding related to anatomical variation in vasculature. The procedure is performed at the patient's bedside unless this is deemed unsafe and then the accepted alternative is open tracheostomy in the operating room. OBJECTIVES: To evaluate the use of pre-procedural ultrasound to aid in the decision of whether PDT in critical care patients should be performed at the patient's bedside or by open surgical tracheostomy...
June 2017: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28647639/flow-reduction-aided-thrombin-injection-for-complex-femoral-pseudoaneurysms-case-series-and-review-of-the-literature
#4
Nandakumar Menon, Charles B Drucker, Abhishek Bhardwaj, Richa Kalsi, Robert S Crawford, Rajabrata Sarkar, Shahab Toursavadkohi
We describe a series of 4 patients with complex femoral pseudoaneuryms including short, wide necks that were successfully managed with a combination of proximal endovascular balloon occlusion and percutaneous thrombin injection. Contralateral femoral access was used to place an occlusion balloon proximal to or across the lesion and thrombin was injected directly into the pseudoaneurysm under ultrasound guidance. All patients recovered from their procedures without incident and are free from recurrence at follow-up...
June 21, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28647635/new-vein-compression-entities-in-patients-with-unexplained-leg-swelling
#5
Alaina Garrie, Lauren E Jones, Julia F Chen, Robert W Feldtman, Kenneth R Kollmeyer, Jasmine L Richmond, Craig A Ferrara, Pablo V Uceda, Lelesse Mocio, Samuel S Ahn
BACKGROUND: This retrospective study identifies often overlooked anatomical sites for non-thrombotic venous outflow obstruction (NTVO) in patients with unexplained lower extremity edema and pain. MATERIALS AND METHODS: We retrospectively reviewed the charts of 75 consecutive patients experiencing symptoms of unexplained lower extremity edema with pain that were unexplained by ultrasound, computed tomography angiography (CTA), and magnetic resonance imaging (MRI), who subsequently underwent venography in an outpatient medical office from 2010 to 2014...
June 21, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28644804/global-time-delay-estimation-in-ultrasound-elastography
#6
Hoda S Hashemi, Hassan Rivaz
A critical step in quasi-static ultrasound elastography is estimation of time-delay between two frames of radiofrequency (RF) data that are obtained while the tissue is undergoing deformation. This paper presents a novel technique for timedelay estimation (TDE) of all samples of RF data simultaneously, thereby exploiting all the information in RF data for TDE. A nonlinear cost function that incorporates similarity of RF data intensity and prior information of displacement continuity is formulated. Optimization of this function involves searching for TDE of all samples of the RF data, rendering the optimization intractable with conventional techniques given that the number of variables can be approximately one million...
June 21, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28639753/screening-for-ovarian-cancer-imaging-challenges-and-opportunities-for-improvement
#7
EDITORIAL
Kelsey B Mathieu, Deepak G Bedi, Sara L Thrower, Aliya Qayyum, Robert C Bast
The United Kingdom Collaborative Trial of Ovarian Cancer Screening (UKCTOCS) recently reported a reduction in the average overall mortality among ovarian cancer patients screened with an annual sequential, multimodal strategy that tracked biomarker CA125 over time, where increasing serum CA125 levels prompted ultrasound. However, multiple cases were documented wherein serum CA125 levels were rising, but ultrasound screens were normal, thus delaying surgical intervention. A significant factor which could contribute to false negatives is that many aggressive ovarian cancers are believed to arise from epithelial cells on the fimbriae of the fallopian tubes, which are not readily imaged...
June 22, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28639578/ten-basic-principles-about-critical-ultrasonography-critical-care-practitioners-need-to-know
#8
Li-Na Zhang, Hong-Min Zhang, Yan-Gong Cao, Wan-Hong Yin, Wei He, Ran Zhu, Xin Ding, Li-Xia Liu, Jun Wu, Li Li, Hai-Tao Liu, Yu-Hang Ai, Xiao-Ting Wang
No abstract text is available yet for this article.
July 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28637781/detecting-optic-nerve-head-swelling-on-ultrasound-and-optical-coherence-tomography-in-children-and-young-people-an-observational-study
#9
Annegret Hella Dahlmann-Noor, Gillian W Adams, Moritz Claudius Daniel, Alison Davis, Joanne Hancox, Melanie Hingorani, Patricia Ibanez, Becky McPhee, Himanshu Patel, Marie Restori, Clare Roberts, Maria Theodorou, James Acheson
BACKGROUND: Following high-profile cases, referrals for evaluation of 'suspicious optic discs' to eye clinics in the UK have sharply increased, asking ophthalmologists to reliably distinguish between true and pseudopapilloedema. Optic nerve sheath dilatation (ONSD) on ocular ultrasound (US) is considered a reliable sign of true papilloedema, but this test is not widely available. Recently, anterior bowing of Bruch's membrane (BM) and increased retinal nerve fibre layer thickness on optical coherence tomography (OCT) have emerged as indicators of intracranial hypertension, and OCT is widely available...
June 21, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28634807/differential-diagnosis-between-benign-and-malignant-soft-tissue-tumors-utilizing-ultrasound-parameters
#10
Takeshi Morii, Tomonori Kishino, Naoko Shimamori, Mitsue Motohashi, Hiroaki Ohnishi, Keita Honya, Takayuki Aoyagi, Takashi Tajima, Shoichi Ichimura
PURPOSE: Preoperative discrimination between benign and malignant soft tissue tumors is critical for the prevention of excess application of magnetic resonance imaging and biopsy as well as unplanned resection. Although ultrasound, including power Doppler imaging, is an easy, noninvasive, and cost-effective modality for screening soft tissue tumors, few studies have investigated reliable discrimination between benign and malignant soft tissue tumors. METHODS: To establish a modality for discrimination between benign and malignant soft tissue tumors using ultrasound, we extracted the significant risk factors for malignancy based on ultrasound information from 40 malignant and 56 benign pathologically diagnosed soft tissue tumors and established a scoring system based on these risk factors...
June 20, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28634578/neonatal-venous-thromboembolism
#11
REVIEW
Kristina M Haley
Neonates are the pediatric population at highest risk for development of venous thromboembolism (VTE), and the incidence of VTE in the neonatal population is increasing. This is especially true in the critically ill population. Several large studies indicate that the incidence of neonatal VTE is up almost threefold in the last two decades. Central lines, fluid fluctuations, sepsis, liver dysfunction, and inflammation contribute to the risk profile for VTE development in ill neonates. In addition, the neonatal hemostatic system is different from that of older children and adults...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28631936/the-recent-developments-in-sample-preparation-for-mass-spectrometry-based-metabolomics
#12
Zhi-Gang Gong, Jing Hu, Xi Wu, Yong-Jiang Xu
Metabolomics is a critical member in systems biology. Although great progress has been achieved in metabolomics, there are still some problems in sample preparation, data processing and data interpretation. In this review, we intend to explore the roles, challenges and trends in sample preparation for mass spectrometry- (MS-) based metabolomics. The newly emerged sample preparation methods were also critically examined, including laser microdissection, in vivo sampling, dried blood spot, microwave, ultrasound and enzyme-assisted extraction, as well as microextraction techniques...
February 8, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28625266/-risk-factors-of-deep-venous-thrombosis-associated-with-peripherally-inserted-central-venous-catheter-in-upper-extremity-in-icu
#13
Ning Zhao, Jiale Zhang, Ting Jiang, Xia Chen, Jianning Wang, Chengzhi Ding, Fen Liu, Kejian Qian, Rong Jiang
OBJECTIVE: To analyze the incidence and its risk factors of peripherally inserted central venous catheter related upper extremity deep venous thrombosis (PICC-UEDVT) in intensive care unit (ICU). METHODS: Clinical data of the patients received PICCs in ICU of the First Affiliated Hospital of Nanchang University from August 2013 to August 2016 were retrospectively analysed. The inclusion criteria in the study included: the age > 18 years old, catheter indwelling time > 1 week and the complete relevant information...
February 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28623983/clinical-presentation-of-women-with-pelvic-source-varicose-veins-in-the-perineum-as-a-first-step-in-the-development-of-a-disease-specific-patient-assessment-tool
#14
Kathleen Gibson, Renee Minjarez, Brian Ferris, Moni Neradilek, Matthew Wise, Julianne Stoughton, Mark Meissner
OBJECTIVE: Pelvic venous incompetence can cause symptomatic varicose veins in the perineum, buttock, and thigh. Presentation, symptom severity, and response to treatment of pelvic source varicose veins are not well defined. Currently available tools to measure the severity of lower extremity venous disease and its effects on quality of life may be inadequate to assess disease severity in these patients. The purpose of this study was to evaluate the histories, demographics, and clinical presentations of women with pelvic source varicose veins and to compare these data to a population of women with nonpelvic source varicose veins...
July 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28623369/looking-beyond-the-imaging-plane-3d-needle-tracking-with-a-linear-array-ultrasound-probe
#15
Wenfeng Xia, Simeon J West, Malcolm C Finlay, Jean-Martial Mari, Sebastien Ourselin, Anna L David, Adrien E Desjardins
Ultrasound is well suited for guiding many minimally invasive procedures, but its use is often precluded by the poor visibility of medical devices. When devices are not visible, they can damage critical structures, with life-threatening complications. Here, we developed the first ultrasound probe that comprises both focused and unfocused transducer elements to provide both 2D B-mode ultrasound imaging and 3D ultrasonic needle tracking. A fibre-optic hydrophone was integrated into a needle to receive Golay-coded transmissions from the probe and these data were processed to obtain tracking images of the needle tip...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28623277/in-vivo-quantification-of-placental-insufficiency-by-bold-mri-a-human-study
#16
Jie Luo, Esra Abaci Turk, Carolina Bibbo, Borjan Gagoski, Drucilla J Roberts, Mark Vangel, Clare M Tempany-Afdhal, Carol Barnewolt, Judy Estroff, Arvind Palanisamy, William H Barth, Chloe Zera, Norberto Malpica, Polina Golland, Elfar Adalsteinsson, Julian N Robinson, Patricia Ellen Grant
Fetal health is critically dependent on placental function, especially placental transport of oxygen from mother to fetus. When fetal growth is compromised, placental insufficiency must be distinguished from modest genetic growth potential. If placental insufficiency is present, the physician must trade off the risk of prolonged fetal exposure to placental insufficiency against the risks of preterm delivery. Current ultrasound methods to evaluate the placenta are indirect and insensitive. We propose to use Blood-Oxygenation-Level-Dependent (BOLD) MRI with maternal hyperoxia to quantitatively assess mismatch in placental function in seven monozygotic twin pairs naturally matched for genetic growth potential...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28620429/novel-approaches-to-ultrasonography-of-the-lung-and-pleural-space-where-are-we-now
#17
REVIEW
Daniel Lichtenstein
This review article is an update of what should be known for practicing basic lung ultrasound in the critically ill (LUCI) and is also of interest for less critical disciplines (e.g. pulmonology). It pinpoints on the necessity of a professional machine (not necessarily a sophisticated one) and probe. It lists the 10 main signs of LUCI and some of the main protocols made possible using LUCI: the BLUE protocol for a respiratory failure, the FALLS protocol for a circulatory failure, the SESAME protocol for a cardiac arrest and the investigation of a ventilated acute respiratory distress syndrome patient, etc...
June 2017: Breathe
https://www.readbyqxmd.com/read/28619771/revealed-versus-concealed-criteria-for-placental-insufficiency-in-an-unselected-obstetric-population-in-late-pregnancy-ratio37-randomised-controlled-trial-study-protocol
#18
Francesc Figueras, Eduard Gratacos, Marta Rial, Ilan Gull, Ladislav Krofta, Marek Lubusky, Cruz-Martinez Rogelio, Cruz-Lemini Mónica, Martinez-Rodriguez Miguel, Pamela Socias, Cristina Aleuanlli, Mauro C Parra Cordero
INTRODUCTION: Fetal growth restriction (FGR) affects 5%-10% of all pregnancies, contributing to 30%-50% of stillbirths. Unfortunately, growth restriction often is not detected antenatally. The last weeks of pregnancy are critical for preventing stillbirth among babies with FGR because there is a pronounced increase in stillbirths among growth-restricted fetuses after 37 weeks of pregnancy. Here we present a protocol (V.1, 23 May 2016) for the RATIO37 trial, which evaluates an integrated strategy for accurately selecting at-risk fetuses for delivery at term...
June 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/28612302/a-simplified-lung-ultrasound-approach-to-detect-increased-extravascular-lung-water-in-critically-ill-patients
#19
Antonio Anile, Jole Russo, Giacomo Castiglione, Giovanni Volpicelli
BACKGROUND: The quantification of B-lines at lung ultrasonography is a valid tool to estimate the extravascular lung water (EVLW) in patients after major cardiac surgery. However, there is still uncertainty about the correlation between B-lines and EVLW in a general population of critically ill. AIM: To evaluate a simplified lung ultrasonographic assessment as a tool to estimate the EVLW in critically ill patients admitted to a polyvalent intensive care unit (ICU)...
December 2017: Critical Ultrasound Journal
https://www.readbyqxmd.com/read/28609021/the-critical-role-of-ebus-tbna-cytology-in-the-staging-of-mediastinal-lymph-nodes-in-lung-cancer-patients-a-correlation-study-with-positron-emission-tomography-findings
#20
Mohammed T Lilo, Derek B Allison, Bouchra K Younes, Min Cui, Fred B Askin, Edward Gabrielson, Qing Kay Li
BACKGROUND: The sensitivity and specificity of positron emission tomography (PET) have been significantly improved for the identification of malignancies in recent years; however, it is still necessary to confirm PET findings in a lymph node (LN) by direct tissue sampling. Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) is the most commonly used approach for diagnosing and staging mediastinal LNs, particularly in lung cancer patients with locally advanced disease...
June 13, 2017: Cancer
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