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Vascular catheters

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https://www.readbyqxmd.com/read/29352651/catheter-injected-bone-marrow-mesenchymal-stem-cells-induce-efficacious-occlusion-of-arteriovenous-nidus-in-a-swine-model
#1
Joseph Touma, Jianping Dai, Andre Gaston, Marianne Gervais, Eric Allaire
OBJECTIVES: Arteriovenous malformations (AVMs) are complex vascular lesions. Surgical excision is the treatment of choice, but is often not achievable. Embolo-sclerotherapy alone is associated with high recurrence rates. This study tested the hypothesis that seeding hydrogel conditioned bone marrow derived mesenchymatous stem cells (BM-MSCs) in an AVM nidus model induces solid microvascular occlusion through endoluminal tissue growth. METHODS: AVMs were modelled as arteriovenous microvascular nidus, using swine rete mirabile, a plexiform intracranial structure composed of arterial microvessels that extensively anastomose...
January 15, 2018: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29351462/maximal-strength-training-induced-improvements-in-forearm-work-efficiency-are-associated-with-reduced-blood-flow
#2
Ole Kristian Berg, Stian Kwak Nyberg, Tobias Midtvedt Windedal, Eivind Wang
Maximal strength training (MST) improves work efficiency. However, since blood flow is greatly dictated by muscle contractions in arms during exercise, and vascular conductance is lower, it has been indicated that arms rely more upon adapting oxygen extraction than legs in response to the enhanced work efficiency. Thus, to investigate if metabolic and vascular responses are arm-specific, we utilized Doppler-ultrasound and a catheter placed in the subclavian vein to measure blood flow and a-vO2diff during steady state work in seven young males (24{plus minus}3(SD) years) following six-weeks of handgrip MST...
December 29, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351227/differential-association-of-cx37-and-cx40-genetic-variants-in-atrial-fibrillation-with-and-without-underlying-structural-heart-disease
#3
Sebastian Carballo, Anna Pfenniger, David Carballo, Nicolas Garin, Richard W James, François Mach, Dipen Shah, Brenda R Kwak
Atrial fibrillation (AF) appears in the presence or absence of structural heart disease. The majority of foci causing AF are located near the ostia of pulmonary veins (PVs), where cardiomyocytes and vascular smooth muscle cells interdigitate. Connexins (Cx) form gap junction channels and participate in action potential propagation. Genetic variants in genes encoding Cx40 and Cx37 affect their expression or function and may contribute to PV arrhythmogenicity. DNA was obtained from 196 patients with drug-resistant, symptomatic AF with and without structural heart disease, who were referred for percutaneous catheter ablation...
January 19, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29349919/analysis-of-follow-up-methods-of-vascular-access-and-patient-outcomes-in-hemodialysis-at-a-tertiary-care-hospital-in-china
#4
Ying Zhang, Xianglei Kong, Lijun Tang, Yong Wei, Dongmei Xu
Arteriovenous fistula is the preferred option for vascular access in hemodialysis patients. The aim of this study was to assess different follow-up methods for hemodialysis patients in our hemodialysis center in China. A cohort of 124 patients with stage 3 chronic kidney disease was recruited and double-blind randomly assigned into two groups. Patients in Group A received phone calls to schedule their next consultation a week in advance. Patients in Group B scheduled their next appointment at the end of each visit...
January 19, 2018: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/29348301/predicting-the-presence-of-macrovascular-causes-in-non-traumatic-intracerebral-haemorrhage-the-diagram-prediction-score
#5
Nina A Hilkens, Charlotte J J van Asch, David J Werring, Duncan Wilson, Gabriël J E Rinkel, Ale Algra, Birgitta K Velthuis, Gérard A P de Kort, Theo D Witkamp, Koen M van Nieuwenhuizen, Frank-Erik de Leeuw, Wouter J Schonewille, Paul L M de Kort, Diederik W J Dippel, Theodora W M Raaymakers, Jeannette Hofmeijer, Marieke J H Wermer, Henk Kerkhoff, Korné Jellema, Irene M Bronner, Michel J M Remmers, Henri Paul Bienfait, Ron J G M Witjes, H Rolf Jäger, Jacoba P Greving, Catharina J M Klijn
OBJECTIVE: A substantial part of non-traumatic intracerebral haemorrhages (ICH) arises from a macrovascular cause, but there is little guidance on selection of patients for additional diagnostic work-up. We aimed to develop and externally validate a model for predicting the probability of a macrovascular cause in patients with non-traumatic ICH. METHODS: The DIagnostic AngioGRAphy to find vascular Malformations (DIAGRAM) study (n=298; 69 macrovascular cause; 23%) is a prospective, multicentre study assessing yield and accuracy of CT angiography (CTA), MRI/ magnetic resonance angiography (MRA) and intra-arterial catheter angiography in diagnosing macrovascular causes in patients with non-traumatic ICH...
January 18, 2018: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29336785/the-erector-spinae-plane-block-in-4-cases-of-video-assisted-thoracic-surgery
#6
J C Luis-Navarro, M Seda-Guzmán, C Luis-Moreno, J L López-Romero
Multimodal anaesthesia, combining epidural catheter and general anaesthesia, is a common technique in thoracic surgery, however, epidural catheter placement is not always possible. Recently, erector spinae plane block has been described, which provides analgesia like that of the epidural block, although unilateral, and which has been used in various procedures at thoracic level. At present, there are no studies comparing the efficacy or safety of this block with those commonly used in thoracic surgery. However, its safety profile and contraindications seem different from those of the epidural catheter, since its placement is done under ultrasound view, the needle introduction is done in plane and the ultrasound target, the transverse process, is easily identifiable and is relatively remote from major neural or vascular structures and the pleura...
January 11, 2018: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/29333796/upper-extremity-deep-vein-thrombosis-symptoms-diagnosis-and-treatment
#7
REVIEW
Jaber Mustafa, Ilan Asher, Zev Sthoeger
Upper extremity deep vein thrombosis (UEDVT) is defined as thrombosis of the deep venous system (subclavian, axillary, brachial, ulnar, and radial veins), which drains the upper extremities. It can be caused by thoracic outlet anatomic obstruction, such as Paget-Schroetter syndrome, (primary) or by central intravenous catheters (secondary). UEDVT may be asymptomatic or present with acute severe pain and arm swelling. Clinical suspicion should be confirmed by diagnostic imaging procedures such as duplex ultrasound, computed tomography scan, or magnetic resonance imaging...
January 2018: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/29331613/internal-carotid-artery-web-as-the-cause-of-recurrent-cryptogenic-ischemic-stroke
#8
Jon Antigüedad-Muñoz, Patricia de la Riva, Gorka Arenaza Choperena, Amaia Muñoz Lopetegi, Naiara Andrés Marín, Gorka Fernández-Eulate, Manuel Moreno Valladares, Maite Martínez Zabaleta
Carotid artery web is considered an exceptional cause of recurrent ischemic strokes in the affected arterial territory. The underlying pathology proposed for this entity is an atypical fibromuscular dysplasia. We present the case of a 43-year-old woman with no cardiovascular risk factors who had experienced 2 cryptogenic ischemic strokes in the same arterial territory within an 11-month period. Although all diagnostic tests initially yielded normal results, detailed analysis of the computed tomography angiography images revealed a carotid web; catheter angiography subsequently confirmed the diagnosis...
January 10, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29331355/contemporary-procedural-complications-hospitalizations-and-emergency-visits-after-catheter-ablation-for-atrial-fibrillation
#9
James V Freeman, Grace H Tabada, Kristi Reynolds, Sue Hee Sung, Taylor I Liu, Nigel Gupta, Alan S Go
Contemporary data on complications and resource utilization after atrial fibrillation (AF) ablation are limited. We evaluated rates and risk factors for procedural complication, rehospitalization, and emergency department visits after AF ablation. We identified all adult patients who underwent isolated AF ablation between 2010 and June 2014 in 2 large integrated health-care delivery systems and evaluated rates of acute inpatient complication, 30-day, and 1-year readmission and emergency evaluation. We used multivariable logistic regression to identify predictors of procedural complications, 30-day readmission, or 30-day emergency department evaluation...
December 14, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29331162/unnecessary-removal-of-central-venous-catheters-in-cancer-patients-with-bloodstream-infections
#10
Anne Marie Chaftari, Ray Hachem, Sammy Raad, Ying Jiang, Elizabeth Natividad, Patrick Chaftari, Issam Raad
We evaluated the rate of central venous catheter (CVC) removal in 283 cancer patients with bloodstream infections (BSIs). Removal of CVCs occurred unnecessarily in 57% of patients with non-central-line-associated BSI (non-CLABSI), which was equivalent to the rate of CVC removal in patients with CLABSIs. Physician education and safe interventions to salvage the vascular access are warranted. Infect Control Hosp Epidemiol 2018;1-4.
January 14, 2018: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/29327076/arms-down-cone-beam-ct-hepatic-angiography-performance-assessment-vascular-imaging-quality-and-imaging-artifacts
#11
Adrian J Gonzalez-Aguirre, Elena N Petre, Meier Hsu, Chaya S Moskowitz, Stephen B Solomon, Jeremy C Durack
INTRODUCTION: The practice of positioning patients' arms above the head during catheter-injected hepatic arterial phase cone beam CT (A-CBCT) imaging has been inherited from standard CT imaging due to image quality concerns, but interrupts workflow and extends procedure time. We sought to assess A-CBCT image quality and artifacts with arms extended above the head versus down by the side. METHODS: We performed an IRB approved retrospective evaluation of reformatted and 3D-volume rendered images from 91 consecutive A-CBCTs (43 arms up, 48 arms down) acquired during hepatic tumor arterial embolization procedures...
January 11, 2018: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/29325843/preoperative-intra-aortic-counterpulsation-in-cardiac-surgery-insights-from-a-retrospective-series-of-588-consecutive-high-risk-patients
#12
Giuseppe Gatti, Laura Morra, Gianluca Castaldi, Luca Maschietto, Florida Gripshi, Enrico Fabris, Andrea Perkan, Bernardo Benussi, Gianfranco Sinagra, Aniello Pappalardo
OBJECTIVE: To support a rational use of preoperative intra-aortic balloon pump (IABP) in cardiac surgery. DESIGN: Retrospective, observational study. SETTING: Single university hospital. PARTICIPANTS: The study included 588 (mean age 68.5 ± 9.6 yr) consecutive patients who received IABP before cardiac surgery from 1999 to 2016. INTERVENTIONS: Coronary surgery was performed in 573 (97.4%) cases...
December 6, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29325741/functional-engineered-mesenchymal-stem-cells-with-fibronectin-gold-composite-coated-catheters-for-vascular-tissue-regeneration
#13
Yun-Wen Chen, Shu-Chen Hsieh, Yi-Chin Yang, Shan-Hui Hsu, Mei-Lang Kung, Pei-Ying Lin, Hsien-Hsu Hsieh, Ching-Hao Lin, Cheng-Ming Tang, Huey-Shan Hung
Vascularization of engineered tissues remains one of the key problems. Here, we described a novel approach to promote vascularization of engineered tissues using fibronectin (FN) incorporated gold nanoparticles (AuNP) coated onto catheters with mesenchymal stem cells (MSCs) for tissue engineering. We found that the FN-AuNP composite with 43.5 ppm of AuNP exhibited better biomechanical properties and thermal stability than pure FN. FN-AuNP composites promoted MSC proliferation and increased the biocompatibility...
January 8, 2018: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29322547/improvement-of-the-salvage-rate-of-flap-after-venous-thrombosis-with-intraparenchymatous-venous-pressure-monitoring
#14
Hajime Matsumine, Mariko Mogami, Osamu Fujiwara, Masahiro Hasegawa, Hiroshi Ito, Hiroyuki Sakurai
PURPOSE: Intraparenchymatous venous pressure (IVP) monitoring in flap can measure venous pressure with catheter placement. Among patients with IVP monitoring, this study reviewed postoperative microvascular complications for investigating the transplanted-tissue salvage-rate. PATIENTS AND METHODS: Two hundred and seventy-one patients (male, 132; female, 139; mean age, 52.3 years; age range, 9-82 years) underwent free flap transfer and postoperative continuous IVP monitoring, which performed as follows; a venous catheter was connected to a transducer, and venous pressure in the flap was recorded for three consecutive days postoperatively...
January 11, 2018: Microsurgery
https://www.readbyqxmd.com/read/29321037/acute-aortoiliac-occlusive-disease-during-percutaneous-transluminal-angioplasty-in-the-setting-of-st-elevation-myocardial-infarction-a-case-report
#15
Anthony H Kashou, Nabil Braiteh, Ali Zgheib, Hisham E Kashou
BACKGROUND: Aortoiliac occlusive disease, which is also referred to as Leriche syndrome, is a chronic atherosclerotic occlusive disease that occurs at the level of the aortic bifurcation. It is often thought to present with a triad of clinical symptoms: (1) intermittent lower extremity vascular claudication, (2) impotence, and (3) weak/absent femoral pulses. CASE PRESENTATION: We report a case of a 47-year-old Caucasian woman who presented with an acute inferior ST-elevation myocardial infarction...
January 11, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29319771/peritoneal-dialysis-as-the-first-dialysis-treatment-option-initially-unplanned
#16
Marcela Lara Mendes, Camila Albuquerque Alves, Edwa Maria Bucuvic, Dayana Bitencourt Dias, Daniela Ponce
Most patients with stage 5 CKD start RRT of unplanned manner. Unplanned dialysis, also known as urgent start, may be defined as hemodialysis (HD) started without permanent vascular access, i.e., using a central venous catheter (CVC), or as peritoneal dialysis (PD) started within seven days after implantation of the catheter, without family training. Although few studies have evaluated the PD as an immediate treatment option for patients starting urgent RRT, theirs results suggest that it is a feasible and safe alternative, with infectious complications and survival similar to patients treated with unplanned HD...
October 2017: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
https://www.readbyqxmd.com/read/29318218/potential-benefit-associated-with-delaying-initiation-of-hemodialysis-in-a-japanese-cohort
#17
Satoshi Higuchi, Izaya Nakaya, Kazuhiro Yoshikawa, Yoichiro Chikamatsu, Ken-Ei Sada, Suguru Yamamoto, Satoko Takahashi, Hiroyo Sasaki, Jun Soma
Introduction: Late referral to a nephrologist, the type of vascular access, nutritional status, and the estimated glomerular filtration rate (eGFR) at the start of hemodialysis (HD) have been reported as independent risk factors of survival for patients who begin HD. The aim of this study was to clarify the influence of the HD-free interval from the time of an eGFR of 10 ml/min per 1.73 m2 (IGFR10-HD) on patient outcome. Methods: We enrolled 124 patients aged older than 20 years who had HD initiated in a general hospital...
July 2017: KI Reports
https://www.readbyqxmd.com/read/29316615/what-could-be-the-role-of-antifungal-lock-solutions-from-bench-to-bedside
#18
REVIEW
Christine Imbert, Blandine Rammaert
Candidemia related to the presence of a biofilm are often reported in patients with vascular catheters. Once they are mature, biofilms are persistent infectious reservoirs, and the yeasts dispersed from biofilms can cause infections. Sessile yeasts typically display increased levels of resistance to most antimicrobial agents and systemic treatments usually fail to eradicate previously formed fungal biofilms. In a curative strategy, antifungal lock therapy may help to sterilize catheters, with very high concentrations of antifungal agents, which are not compatible with systemic use...
January 6, 2018: Pathogens
https://www.readbyqxmd.com/read/29316567/modern-invasive-hemodynamic-assessment-of-pulmonary-hypertension
#19
Alberto Pagnamenta, Frédéric Lador, Andrea Azzola, Maurice Beghetti
Since 1998 pulmonary hypertension has been clinically classified into five well-defined, distinct categories. A definitive diagnosis of pulmonary hypertension requires the invasive confirmation of an elevated mean pulmonary artery pressure of 25 mm Hg or above during a right heart catheterization. From a hemodynamic point of view, pulmonary hypertension is classified into precapillary and postcapillary pulmonary hypertension on the basis of a pulmonary artery wedge pressure threshold value of 15 mm Hg. Pulmonary vascular resistance is better characterized by multi-point pressure/flow measurements than by single-point determination...
January 9, 2018: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/29315941/thromboembolic-prophylaxis-protocol-with-warfarin-after-radiofrequency-catheter-ablation-of-infarct-related-ventricular-tachycardia
#20
Konstantinos C Siontis, Sina Jamé, Ghaith Sharaf Dabbagh, Rakesh Latchamsetty, Krit Jongnarangsin, Fred Morady, Frank M Bogun
INTRODUCTION: Ablation in the left ventricle (LV) is associated with a risk of thromboembolism. There are limited data on the use of specific thromboembolic prophylaxis strategies post-ablation. We aimed to evaluate a thromboembolic prophylaxis protocol after ventricular tachycardia (VT) ablation. METHODS AND RESULTS: The index procedures of 217 patients undergoing ablation for infarct-related VT with open irrigated-tip catheters were included. Patients with large LV endocardial ablation area (> 3 cm between ablation lesions) were started on low-dose, slowly escalating unfractionated heparin (UFH) infusion 8 hours after access hemostasis, followed by 3 months of anticoagulation...
January 9, 2018: Journal of Cardiovascular Electrophysiology
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