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Vena cava ultrasound

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https://www.readbyqxmd.com/read/29890776/preoperative-and-postoperative-assessment-of-ultrasonographic-measurement-of-inferior-vena-cava-a-prospective-observational-study
#1
Ayhan Kaydu, Erhan Gokcek
BACKGROUND: Ultrasound measurement of dynamic changes in inferior vena cava (IVC) diameter and collapsibility index (CI) are used to estimate the fluid responsiveness and intravascular volume status. We conducted an analysis to quantify the sonographic measurement of IVC diameter changes in adult patients at the preoperative and postoperative periods. METHODS: Ultrasonography was performed on 72 patients scheduled for surgery with American Society of Anesthesiologists physical status I to III...
June 10, 2018: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/29887474/bone-marrow-derived-mononuclear-cell-seeded-bioresorbable-vascular-graft-improves-acute-graft-patency-by-inhibiting-thrombus-formation-via-platelet-adhesion
#2
Hideki Miyachi, James W Reinhardt, Satoru Otsuru, Shuhei Tara, Hidetaka Nakayama, Tai Yi, Yong-Ung Lee, Shinka Miyamoto, Toshihiro Shoji, Tadahisa Sugiura, Christopher K Breuer, Toshiharu Shinoka
BACKGROUND: Acute thrombosis is a crucial cause of bioresorbable vascular graft (BVG) failure. Bone marrow-derived mononuclear cell (BM-MNC)-seeded BVGs demonstrated high graft patency, however, the effect of seeded BM-MNCs against thrombosis remains to be elucidated. Thus, we evaluated an antithrombotic effect of BM-MNC-seeding and utilized platelet-depletion mouse models to evaluate the contribution of platelets to acute thrombosis of BVGs. METHODS AND RESULTS: BVGs were composed of poly(glycolic acid) mesh sealed with poly(l-lactideco-ε-caprolactone)...
September 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29880355/evaluation-of-subclinical-fluid-overload-using-lung-ultrasound-and-estimated-plasma-volume-in-the-postoperative-period-following-kidney-transplantation
#3
C Mottola, N Girerd, S Coiro, Z Lamiral, P Rossignol, L Frimat, S Girerd
AIM: B-lines count measured with lung ultrasound (LUS) quantifies extravascular lung water and is validated in the setting of acute cardiac failure or chronic dialysis. Patients are often kept in moderately overhydrated states during the early postoperative period following kidney transplantation (KT). We described congestion changes during the early postoperative period following KT and the feasibility of LUS in this setting. METHODS: LUS (28 scanning-points method) and inferior vena cava (IVC) measurements were routinely performed in 36 patients after KT...
June 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29862931/automated-identification-and-localization-of-the-inferior-vena-cava-using-ultrasound-an-animal-study
#4
Jiangang Chen, Jiawei Li, Xin Ding, Cai Chang, Xiaoting Wang, Dean Ta
Ultrasound measurement of the inferior vena cava (IVC) is widely implemented in the clinic. However, the process is time consuming and labor intensive, because the IVC diameter is continuously changing with respiration. In addition, artificial errors and intra-operator variations are always considerable, making the measurement inconsistent. Research efforts were recently devoted to developing semiautomated methods. But most required an initial identification of the IVC manually. As a first step toward fully automated IVC measurement, in this paper, we present an intelligent technique for automated IVC identification and localization...
July 2018: Ultrasonic Imaging
https://www.readbyqxmd.com/read/29808486/echocardiographic-identification-of-atrial-related-structures-and-vessels-in-horses-validated-by-computed-tomography-of-casted-hearts
#5
T Vandecasteele, P Cornillie, G van Steenkiste, K Vandevelde, I Gielen, K Vanderperren, G van Loon
BACKGROUND: Echocardiography is the imaging technique of choice for the equine heart. Nevertheless, knowledge about ulrasonographic identification of dorsally located structures and vessels, related to the atria, in horses is scarce. OBJECTIVES: To describe the echocardiographic approach and the identification of structures and vessels in relation to the atria in healthy horses. METHODS: CT images from two equine hearts, casted with self-expanding foam, were segmented and used to identify atrial-related structures and vessels...
May 28, 2018: Equine Veterinary Journal
https://www.readbyqxmd.com/read/29806878/study-of-movement-of-umbilical-venous-catheters-over-time
#6
Adam Hoellering, Didier Tshamala, Mark W Davies
AIM: To quantify, in well-positioned umbilical venous catheters (UVC), the direction and magnitude of catheter tip migration. METHODS: In this prospective, single-centre, observational, cohort study, infants with a UVC inserted that reached the target zone - inferior vena cava, from ductus venosus to cavoatrial junction (CAJ) - were included. Ultrasound was used to position the catheter tip as near to the CAJ as possible at insertion and to guide any subsequent withdrawals of the catheter...
May 28, 2018: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/29784593/diagnosis-and-surgical-management-of-inferior-vena-cava-leiomyomatosis
#7
Chao Yang, Huimin Fang, Yunsong Yang, Fei Cai, Hong Zheng, Bi Jin, Yiqing Li, Zheng Liu, Mohamed A Zayed
OBJECTIVE: We aimed to review our experience in the diagnosis and surgical management of patients diagnosed with inferior vena cava leiomyomatosis (IVL). METHODS: We retrospectively evaluated all patients diagnosed with IVL between 1999 and 2015. Patient demographics, diagnostic imaging, operative techniques, and perioperative outcomes were reviewed. RESULTS: Over the study period, 16 patients with an IVL diagnosis were identified. In all patients, the diagnosis was made with ultrasound and magnetic resonance imaging...
May 18, 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/29761678/ultrasound-of-jugular-veins-for-assessment-of-acute-dyspnea-in-emergency-departments-and-for-the-assessment-of-acute-heart-failure
#8
Batsheva Tzadok, Shay Shapira, Eran Tal-Or
BACKGROUND: When a patient arrives at the emergency department (ED) presenting with symptoms of acute decompensated heart failure (ADHF), it is possible to reach a definitive diagnosis through many different venues, including medical history, physical examination, echocardiography, chest X-ray, and B-type natriuretic peptide (BNP) levels. Point-of-care ultrasound (POCUS) has become a mainstream tool for diagnosis and treatment in the field of emergency medicine, as well as in various other departments in the hospital setting...
May 2018: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/29758453/estimation-and-tracking-of-ap-diameter-of-the-inferior-vena-cava-in-ultrasound-images-using-a-novel-active-circle-algorithm
#9
Ebrahim Karami, Mohamed S Shehata, Andrew Smith
Medical research suggests that the anterior-posterior (AP)-diameter of the inferior vena cava (IVC) and its associated temporal variation as imaged by bedside ultrasound is useful in guiding fluid resuscitation of the critically-ill patient. Unfortunately, indistinct edges and gaps in vessel walls are frequently present which impede accurate estimation of the IVC AP-diameter for both human operators and segmentation algorithms. The majority of research involving use of the IVC to guide fluid resuscitation involves manual measurement of the maximum and minimum AP-diameter as it varies over time...
May 4, 2018: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29755101/-outcome-of-surgical-treatment-of-locally-advanced-lung-cancer-after-induction-chemoradiotherapy
#10
Masayuki Tanahashi, Haruhiro Yukiue, Eriko Suzuki, Naoko Yoshii, Shinsuke Kitazawa, Yasunori Kaminuma, Hiroshi Niwa
OBJECTIVE: The outcome of surgical treatment of non-small-cell lung cancer after induction chemoradiotherapy was investigated. SUBJECTS: The subjects were 74 patients with non-small-cell lung cancer who received induction chemoradiotherapy( ICRT) between 1998 and 2016. ICRT was administered to pT3 lung cancer invading the chest wall(20 patients), pT4 lung cancer invading the adjacent organ(22 patients), and cN2 lung cancer(32 patients). cN2 was confirmed by mediastinoscopy(13 patients) and endobronchial ultrasound-guided transbronchial needle aspiration(EBUS-TBNA)(19 patients)...
April 2018: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/29743653/long-term-outcome-of-recoverable-stents-for-budd-chiari-syndrome-complicated-with-inferior-vena-cava-thrombosis
#11
Yonghua Bi, Hongmei Chen, Penxu Ding, Jianzhuang Ren, Xinwei Han
This study aimed to present long-term results of a 12-year patient follow-up of recoverable stents for BCS complicated by inferior vena cava (IVC) thrombosis. Forty consecutive patients with BCS complicated by IVC thrombosis were treated with recoverable stents. The median duration of symptoms was 24 months. Recoverable stents was placed after predilation of the obstructed IVC, and then agitation thrombolysis or catheter-directed thrombolysis of IVC was performed. The recoverable stents was removed eventually after thrombus disappeared...
May 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29742707/surgical-treatment-for-metastasis-from-lymphoepithelioma-like-cholangiocarcinoma-in-the-liver-a-case-report
#12
Jun-Wei Zhang, Hua-Yu Yang, Yi-Yao Xu, Xin-Ting Sang, Shuang-Ni Yu, Han-Chun Huang, Jin Bian, Jian-Ping Xiong, Xin Lu
RATIONALE: Lymphoepithelioma-like cholangiocarcinoma (LEL-CC) is a rare variant of intrahepatic cholangiocarcinoma (ICC), which is characterized by the better outcome than normal ICC. There is no report about the treatment for the metastasis of the LEL-CC. Here, we describe a rare case of LEL-CC of the liver and report the treatment for metastasis of it. PATIENT CONCERNS: A 38-year-old woman with a chronic hepatitis B infection was referred to the department of liver surgery in our hospital with a mass in the liver...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29739309/performance-evaluation-of-adaptive-imaging-based-on-multiphase-apodization-with-cross-correlation-a-pilot-study-in-abdominal-ultrasound
#13
Junseob Shin, Yu Chen, Harshawn Malhi, Frank Chen, Jesse Yen
Degradation of image contrast caused by phase aberration, off-axis clutter, and reverberation clutter remains one of the most important problems in abdominal ultrasound imaging. Multiphase apodization with cross-correlation (MPAX) is a novel beamforming technique that enhances ultrasound image contrast by adaptively suppressing unwanted acoustic clutter. MPAX employs multiple pairs of complementary sinusoidal phase apodizations to intentionally introduce grating lobes that can be used to derive a weighting matrix, which mostly preserves the on-axis signals from tissue but reduces acoustic clutter contributions when multiplied with the beamformed radio-frequency (RF) signals...
May 1, 2018: Ultrasonic Imaging
https://www.readbyqxmd.com/read/29736835/value-of-two-dimensional-shear-wave-elastography-for-assessing-acute-liver-congestion-in-a-bama-mini-pig-model
#14
Li-Ting Xie, Dan-Xia Xu, Guo Tian, Li-Yun Zhong, Qi-Yu Zhao, Qing-Hong Ke, Tian-An Jiang
BACKGROUND: To date, liver congestion is one of the most significant clinical diseases. However, few studies have profoundly investigated the development, pathology, and prognosis of the important problems associated with acute hepatic congestion. AIMS: To explore the value of noninvasive two-dimensional shear wave elastography (2D-SWE) for assessing acute liver congestion in an animal model. METHODS: Six healthy Bama mini-pigs were used for this research and randomly divided into the experimental group and control group...
May 8, 2018: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29731074/postoperative-doppler-ultrasonography-in-liver-transplantation
#15
Y K Chung, H J Choi, G H Na, Y K You, I Y Park
BACKGROUND: Doppler ultrasonography plays an important role in the postoperative management of liver transplantation. We present our initial experiences evaluating liver transplants with the use of postoperative Doppler sonography. METHODS: In our hospital, we performed 20 liver transplantations from July 2014 to October 2016. Among 20 patients, we performed 15 deceased-donor liver transplantations (DDLTs) and 5 living-donor liver transplantations (LDLTs). For deceased donors, inferior vena cava anastomoses were performed with the use of the piggyback technique, and for living donors, modified right grafts were used with middle hepatic vein reconstruction by Dacron graft...
May 2018: Transplantation Proceedings
https://www.readbyqxmd.com/read/29722288/ultrasound-guided-central-venous-tip-confirmation-via-right-external-jugular-vein-using-a-right-supraclavicular-fossa-view
#16
Mariko Kosaka, Yoshimasa Oyama, Tetsuya Uchino, Yojiro Ogihara, Hironori Koga, Chihiro Shingu, Shigekiyo Matsumoto, Takaaki Kitano
INTRODUCTION: Ultrasound-guided central venous catheter tip confirmation has a potential to precisely locate the central venous catheter, preventing its misplacement, using real-time guidance. This observational study sought to determine the accuracy of central venous catheter tip positioning via the external jugular vein via a supraclavicular fossa view under ultrasound guidance. METHODS: In total, 77 patients scheduled for central venous catheter insertion via the right external jugular vein were enrolled...
May 1, 2018: Journal of Vascular Access
https://www.readbyqxmd.com/read/29708541/deep-vein-thrombosis-induced-by-stasis-in-mice-monitored-by-high-frequency-ultrasonography
#17
Ryan N Rys, Mark D Blostein, Catherine A Lemarié
Venous thrombosis is a common condition affecting 1 - 2% of the population, with an annual incidence of 1 in 500. Venous thrombosis can lead to death through pulmonary embolism or results in the post-thrombotic syndrome, characterized by chronic leg pain, swelling, and ulceration, or in chronic pulmonary hypertension resulting in significant chronic respiratory compromise. This is the most common cardiovascular disease after myocardial infarction and ischemic stroke and is a clinical challenge for all medical disciplines, as it can complicate the course of other disorders such as cancer, systemic disease, surgery, and major trauma...
April 13, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29706344/endovascular-removal-of-fractured-inferior-vena-cava-filter-fragments-5-year-registry-data-with-prospective-outcomes-on-retained-fragments
#18
Andrew J Kesselman, Nam Sao Hoang, Alexander Y Sheu, William T Kuo
PURPOSE: To evaluate the safety and efficacy of attempted percutaneous filter fragment removal during retrieval of fractured inferior vena cava (IVC) filters and to report outcomes associated with retained filter fragments. MATERIALS AND METHODS: Over a 5-year period, 82 consecutive patients presenting with a fractured IVC filter were prospectively enrolled into an institutional review board-approved registry. There were 27 men and 55 women (mean, 47 y; range, 19-85 y)...
June 2018: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/29705227/anatomic-recanalization-of-hepatic-vein-and-inferior-vena-cava-versus-direct-intrahepatic-portosystemic-shunt-creation-in-budd-chiari-syndrome-overall-outcome-and-midterm-transplant-free-survival
#19
Amar Mukund, Kartik Mittal, Aniket Mondal, Shiv Kumar Sarin
PURPOSE: To assess overall outcome and midterm transplant-free survival of patients with Budd-Chiari syndrome (BCS) undergoing radiologic interventions including anatomic recanalization of the hepatic vein (HV) and inferior vena cava (IVC) and direct intrahepatic portosystemic shunt (DIPS) creation, both as combined and as independent groups. MATERIALS AND METHODS: From November 2010 to October 2014, 136 patients with BCS were treated with HV/IVC recanalization (group 1) or DIPS creation (group 2)...
April 25, 2018: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/29699882/radical-robot-assisted-laparoscopic-nephrectomy-with-thrombectomy-in-the-vena-cava
#20
J Estébanez Zarranz, J Belloso Loidi, M A Gutierrez García, V Rubio Calaveras, G Morales Higelmo, P Melendo Tercilla, L Busto Leis, J P Sanz Jaka
BACKGROUND: Renal cell carcinoma has a natural tendency to extend through the renal vein. When the thrombus reaches the vena cava, thrombectomy and the necessary reconstruction of the vena cava are typically performed by open pathway. Robot-assisted technology provides advantages for performing this complex technique, using a minimally invasive access. MATERIAL AND METHODS: We present the technique we employed in the first case performed in our department. After performing renal artery embolisation, we conducted the surgery with the Vinci S robotic system...
April 23, 2018: Actas Urologicas Españolas
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