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Ivc measurement

Maria Kerti, Zsuzsanna Balogh, Krisztina Kelemen, Janos T Varga
Rationale: The relationship of functional parameters such as lung mechanics, chest kinematics, metabolism and peripheral and respiratory muscle function with the level of exercise tolerance remains a controversial subject. While it has been previously shown that pulmonary rehabilitation is capable of improving exercise tolerance in patients afflicted by COPD, as expressed by values of 6-minute walking test (6MWT), the degree of contribution to this change by each of the aforementioned parameters remains unclear...
2018: International Journal of Chronic Obstructive Pulmonary Disease
Natalie Yu Yi Ng, Hannah Hui En Ang, Jacqueline Chieh Ling Tan, Weng Hoe Ho, Win Sen Kuan, Mui Teng Chua
PURPOSE: We aim to determine whether the combination of regional tissue oxygen saturation (StO2 ) measurement using near-infrared spectroscopy (NIRS), inferior vena cava (IVC) collapsibility and ejection fraction (EF) is able to detect occult sepsis. METHODS: We included adult patients in the emergency department with at least one of the following: fever; any one component of the quick sepsis-related organ function assessment (SOFA) score; heart rate≥100 beats per minute; or white cell count <4...
February 27, 2018: American Journal of Emergency Medicine
Qing Zhang, Xiaoting Wang, Longxiang Su, Hongmin Zhang, Wenzhao Chai, Yangong Chao, Wei He, Dawei Liu
PURPOSE: To explore the relationship between the shape of the inferior vena cava (IVC) lumen and central venous pressure (CVP). METHODS: In 60 patients undergoing mechanical ventilation and CVP monitoring in the Intensive Care Unit of Peking Union Medical College Hospital from July to October 2016, we measured with B-mode ultrasonography the transverse maximum (MXD) and minimum diameter (MID) of the IVC at end expiration, and calculated the diameter ratio (DR) as MXD/MID...
March 12, 2018: Journal of Clinical Ultrasound: JCU
Keamogetswe Molokoane-Mokgoro, Lara Nicole Goldstein, Mike Wells
INTRODUCTION: Ultrasound assessment of the inferior vena cava (IVC) has gained favour in aiding fluid management decisions for controlled, mechanically ventilated patients as well as in non-mechanically ventilated, spontaneously breathing patients. Its utility in spontaneously breathing patients during positive pressure non-invasive ventilation has not yet been determined. The use of the axillary vein, as an alternative option to the IVC due to its ease of accessibility and independence from intra-abdominal pressure, has also not been evaluated...
March 9, 2018: Emergency Medicine Journal: EMJ
Lorna G Keenan, Kathy Rock, Aini Azmi, Osama Salib, Charles Gillham, Orla McArdle
INTRODUCTION: Previous studies have investigated the anatomical distribution of para-aortic lymph nodes (PAN) in patients with cervical cancer. However, an atlas for accurate clinical target volume (CTV) delineation has yet to be defined. The purpose of this study was to design and verify a computerized tomography (CT) atlas to provide guidance for contouring the PAN CTV in patients with cervical cancer. MATERIALS AND METHODS: This prospective study included 21 cervical cancer patients (design cohort) with 39 pathological PAN identified on (18)F-FDG PET-CT...
March 6, 2018: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
Elisabetta Tedaldi, Chiara Montanari, Kenneth I Aycock, Francesco Sturla, Alberto Redaelli, Keefe B Manning
Inferior vena cava (IVC) filters have been used for over five decades as an alternative to anticoagulation therapy in the treatment of venous thromboembolic disease. However, complications associated with IVC filters remain common. Though many studies have investigated blood flow in the IVC, the effects of respiration-induced IVC collapse have not been evaluated. Our hypothesis is that IVC collapse may have an influence on IVC filter performance. Therefore, we herein investigate the hemodynamics in uncollapsed and collapsed IVC configurations using in vitro flow experiments and computational simulations...
February 24, 2018: Medical Engineering & Physics
Erin K Stenson, Rajesh Punn, Musaab Ramsi, Saraswati Kache
OBJECTIVES: The ability to plot the inferior vena cava (IVC) size on a normal curve for pediatric patients may prove beneficial. First, in patients with normal cardiac anatomy who present in shock, assessing IVC size may be valuable for evaluating the degree of dehydration. Second, in children with heart disease, understanding how a child's IVC size compares to normal could be particularly beneficial for patients with right heart disease. We sought to create normal curves for the IVC and aorta in children younger than 6 years...
February 26, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
Mohamed Mohamed Tawfik, Amany Ismail Tarbay, Ahmed Mohamed Elaidy, Karim Ali Awad, Hanaa Mohamed Ezz, Mohamed Ahmed Tolba
BACKGROUND: The optimal strategy of fluid administration during spinal anesthesia for cesarean delivery is still unclear. Ultrasonography of the inferior vena cava (IVC) has been recently used to assess the volume status and predict fluid responsiveness. In this double-blind, randomized controlled study, we compared maternal hemodynamics using a combination of 500-mL colloid preload and 500-mL crystalloid coload versus 1000-mL crystalloid coload. We assessed the IVC at baseline and at subsequent time points after spinal anesthesia...
February 14, 2018: Anesthesia and Analgesia
Chongqing Huang, Guanfeng Yu, Jingyong Huang
OBJECTIVE: To investigate the clinical effect of endovascular interventional treatment for iliac vein compression syndrome (IVCS). MATERIAL AND METHODS: The data of 68 patients with IVCS, underwent interventional treatment in our hospital, were analyzed retrospectively. Among these patients, 46 were complicated with lower extremity varicose veins. 65 patients underwent stent implantation, while 3 patients underwent simple balloon angioplasty. 14 patients were complicated with post-thrombotic syndrome (PTS) and 11patients with acute deep venous thrombosis (DVT)...
February 8, 2018: Annals of Vascular Surgery
J Eli Robins, Ihab Ragai, Dean J Yamaguchi
OBJECTIVE: Inferior vena cava (IVC) filters are used in patients at risk for pulmonary embolism who cannot be anticoagulated. Unfortunately, these filters are not without risk, and complications include perforation, migration, and filter fracture. The most prevalent complication is filter perforation of the IVC, with incidence varying among filter models. To our knowledge, the mechanical properties of IVC filters have not been evaluated and are not readily available through the manufacturer...
January 30, 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
Joseph B Miller, Alexander Lee, Julian P Suszanski, Madison Tustian, Jessica Levely Corcoran, Steven Moore, Lauren Rodriguez, Christopher A Lewandowski
INTRODUCTION: Retrospective data indicates that dehydration in acute ischemic stroke patients may be common, even though these patients frequently have elevated blood pressure. We sought to evaluate clinical and laboratory measures of intravascular volume status compared to more objective measures using ultrasound measurements of the inferior vena cava (IVC). METHODS: This was a prospective observation study of acute ischemic stroke patients in the emergency department...
January 29, 2018: American Journal of Emergency Medicine
Tianyou Yang, Shuwen Lin, Tianbao Tan, Jiliang Yang, Jing Pan, Chao Hu, Jiahao Li, Yan Zou
OBJECTIVES: To investigate the impact of 3D printed model on understanding of surgical anatomy of retroperitoneal tumor. MATERIALS AND METHODS: Three-dimensional model was printed, based on multi-detectors computed tomography (MDCT) of a retroperitoneal tumor. Participants (10 students, 10 residents and 10 surgeons) were asked to identify vasculatures which were important in resection of the tumor, after viewing MDCT images, 3D visualization model and 3D printed model, respectively...
February 1, 2018: World Journal of Surgery
Özcan Pişkin, İbrahim İlker Öz
In the intensive care unit (ICU), stable hemodynamics are very important. Hemodynamic intervention is often effective against multiple organ failure, such as in tissue hypoxia and shock. The administration of intravenous fluids is the first step in regulating tissue perfusion.The main objective of this study is to compare the performance between 2 methods namely pleth variability index (PVI) and IVC distensibily index (dIVC).In this study, the hemodynamic measurements were performed before and after passive leg raising (PLR)...
November 2017: Medicine (Baltimore)
Ramon Cesar Botigelli, Eduardo Montanari Razza, Elisa Mariano Pioltine, Patricia Kubo Fontes, Kátia Regina Lancellotti Schwarz, Cláudia Lima Verde Leal, Marcelo Fábio Gouveia Nogueira
In our study, we added natriuretic peptide type C (NPPC) and/or sildenafil during in vitro maturation (IVM) of bovine cumulus-oocyte complexes (COCs) followed by in vitro culture (IVC) of embryos with or without sildenafil. We evaluated the effects on the lipid content (LC) of oocytes and embryos and also verified the expression of 96 transcripts related to competence in matured COCs and 96 transcripts related to embryo quality in blastocysts. After IVM, LC was decreased in oocytes by NPPC while sildenafil did not affect LC in oocytes...
January 17, 2018: Reproductive Biology
Daniele Orso, Irene Paoli, Tommaso Piani, Francesco L Cilenti, Lorenzo Cristiani, Nicola Guglielmo
OBJECTIVE: Fluid responsiveness is the ability to increase the cardiac output in response to a fluid challenge. Only about 50% of patients receiving fluid resuscitation for acute circulatory failure increase their stroke volume, but the other 50% may worsen their outcome. Therefore, predicting fluid responsiveness is needed. In this purpose, in recent years, the assessment of the inferior vena cava (IVC) through ultrasound (US) has become very popular. The aim of our work was to systematically review all the previously published studies assessing the accuracy of the diameter of IVC or its respiratory variations measured through US in predicting fluid responsiveness...
January 1, 2018: Journal of Intensive Care Medicine
Paulo Roberto Santos, José Antonio de Lima Neto, Raimundo Aragão Aires Carneiro, Antônio Igor Taumaturgo Dias Soares, Wanessa Ribeiro de Oliveira, Juliana Oliveira Figueiredo, Narcélio Menezes Silva Filho, Thais Oliveira Silva
INTRODUCTION: Ultrasound is an emerging method for assessing lung congestion but is still seldom used. Lung congestion is an important risk of cardiac events and death in end-stage renal disease (ESRD) patients on hemodialysis (HD). OBJECTIVE: We investigated possible variables associated with lung congestion among diabetics with ESRD on HD, using chest ultrasound to detect extracellular lung water. METHODS: We studied 73 patients with diabetes as the primary cause of ESRD, undergoing regular HD...
October 2017: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
Yun Ang Choi, Hyuksool Kwon, Jin Hee Lee, Jae Yun Jung, Yoo Jin Choi
OBJECTIVES: This prospective, observational study evaluated changes in ultrasound measurements of the inferior vena caval index (IVCI), the aorta diameter/IVC diameter index (Ao/IVCD), and the aorta area/IVC area index (Ao/IVCA) during fluid administration in children requiring intravenous fluid administration. METHODS: Children who presented to the pediatric emergency department with symptoms of dehydration were enrolled between May 2015 and February 2016. The maximum diameter of the aorta, from inner wall to inner wall, and the long and short axis diameters of IVC were measured using a convex array transducer in the transverse view...
January 4, 2018: American Journal of Emergency Medicine
Alexander A Berger, Steven Abramowitch, Pamela A Moalli
INTRODUCTION AND HYPOTHESIS: Defining patient characteristics that alter vascular anatomy at the sacrum is critical for avoiding life-threatening bleeding at the time of sacrocolpopexy. We tested the hypothesis that in thinner/older women, the bifurcations of the aorta and inferior vena cava (IVC) are lower relative to S1 resulting in less space accessible for suture/mesh placement, placing this group at increased risk of major vascular injury. METHODS: In a retrospective cross-sectional study, CT scans were used to make 2D measurements and a 3D model of the aorta/IVC, intervertebral disc space, and bony anatomy using segmentation and modeling software...
January 3, 2018: International Urogynecology Journal
Doaa El Amrousy, Rasha Gamal, Shaymaa Elrifaey, Samir Hassan
OBJECTIVE: To assess the accuracy of the inferior vena cava to aorta (IVC/Ao) diameter ratio for predicting significant dehydration in infants relative to their percentage weight change and the clinical diagnosis by a physician. METHODS: A prospective observational study was performed on 200 infants with acute diarrhea presenting with clinical evidence of significant dehydration whose treatment required intravenous (IV) fluids as determined by the attending physician at a pediatric emergency department...
December 28, 2017: Journal of Pediatric Gastroenterology and Nutrition
Holly Payne, Alexander Brill
Deep vein thrombosis (DVT) and its devastating complication, pulmonary embolism, are a severe health problem with high mortality. Mechanisms of thrombus formation in veins remain obscure. Lack of mobility (e.g., after surgery or long-haul flights) is one of the main factors leading to DVT. The pathophysiological consequence of the lack of mobility is blood flow stagnation in venous valves. Here, a model is described that mimics such flow disturbance as a thrombosis-driving factor. In this model, partial flow restriction (stenosis) in the inferior vena cava (IVC) is created...
December 22, 2017: Journal of Visualized Experiments: JoVE
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