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https://www.readbyqxmd.com/read/29148903/an-onyx-tunnel-reconstructive-transvenous-balloon-assisted-onyx-embolization-for-dural-arteriovenous-fistula-of-the-transverse-sigmoid-sinus
#1
Mena G Kerolus, Joonho Chung, Stephen A Munich, Yoshikazu Matsuda, Hideo Okada, Demetrius K Lopes
Transvenous embolization is an effective method for treating dural arteriovenous fistulas (DAVFs) of the transverse-sigmoid sinus (TSS). However, in cases of complicated DAVFs, it is difficult to preserve the patency of the dural sinus. The authors describe the technical details of a new reconstructive technique using transvenous balloon-assisted Onyx embolization as another treatment option in a patient with an extensive and complex DAVF of the left TSS. A microcatheter and compliant balloon catheter were navigated into the left internal jugular vein and placed at the distal end of the DAVF in the transverse sinus...
November 17, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29148899/patients-with-cranial-dural-arteriovenous-fistulas-may-benefit-from-expanded-hypercoagulability-and-cancer-screening
#2
Sean P Polster, Hussein A Zeineddine, Joseph Baron, Seon-Kyu Lee, Issam A Awad
OBJECTIVE Cranial dural arteriovenous fistulas (DAVFs) have been associated with dural sinus occlusion, and previous reports have suggested the association of hypercoagulability with some cases. But the prevalence of a hypercoagulable state has not been systematically analyzed in conjunction with laboratory markers and clinical manifestations, including history of thromboembolism or systemic malignancy. The authors hypothesize that laboratory or clinical evidence of a hypercoagulable state, including cancer, is commonly identifiable in consecutively identified patients with DAVFs, with implications for clinical management...
November 17, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29148009/preoperative-ultrasound-for-runoff-venous-decompression-of-peripheral-nerves-for-arteriovenous-access-related-pain-in-the-upper-limb
#3
Hiroaki Matsuda, Yoshinari Oka, Ryuichi Yoshida, Yuki Katsura, Hidemi Takeuchi, Yasuo Fujimoto, Shigeko Takatsu, Masashi Miyazaki
INTRODUCTION: Arteriovenous access (AVA)-related pain treated successfully with runoff-venous decompression of the causative nerve, following ultrasound (US)-assisted preoperative evaluation, has never been reported. CASE PRESENTATION: A 57-year-old man suffering from constant exhausting pains along the outflow cephalic vein of the radiocephalic arteriovenous fistula at the wrist and the antecubital fossa, was treated surgically after the diagnosis of AVA-related pain derived from cephalic vein compression on two peripheral cutaneous nerves, the superficial radial nerve (SRN) and the lateral antebrachial cutaneous nerve (LACN)...
November 9, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/29148008/supervised-preoperative-forearm-exercise-to-increase-blood-vessel-diameter-in-patients-requiring-an-arteriovenous-access-for-hemodialysis-rationale-and-design-of-the-pinch-trial
#4
Esther D Wilschut, Joris I Rotmans, Ernst Jan Bos, Daniëlle van Zoest, Daniël Eefting, Jaap F Hamming, Koen E A van der Bogt
BACKGROUND: Failure of maturation occurs in 30%-60% of arteriovenous fistula (AVF) creation for hemodialysis, with highest rates in distal radiocephalic fistulas. This is partly due to initial small blood vessel size with limited blood flow capacity. Forearm exercise has shown potential as stimulus for increasing blood vessel size in patients with end-stage renal disease (ESRD) and may promote maturation of AVFs in the upper limb when applied postoperatively. However, it is unknown if forearm exercise increases blood vessel size pre-operatively, which may contribute to more distal AVF creation and raise success rates of AVF surgery...
November 15, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/29148007/how-to-treat-arteriovenous-graft-infection-total-versus-partial-graft-excision
#5
Suh Min Kim, Seung-Kee Min, Sanghyun Ahn, Sang-Il Min, Jongwon Ha, Jung Kee Chung
INTRODUCTION: Arteriovenous graft (AVG) infection can result in life-threatening sepsis and loss of vascular access. A retrospective study was performed to establish an appropriate treatment strategy for AVG infection. METHODS: A total of 50 cases of AVG infection were treated between January 2005 and June 2016. The surgical methods used were total graft excision (TGE) (n = 34), or partial graft excision (PGE) with interposition graft (n = 16). RESULTS: Infection was noted at a puncture site (n = 22), a prior incision for surgery or endovascular therapy (n = 20), and abandoned (currently unused) grafts (n = 5)...
November 11, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/29148006/autogenous-forearm-loop-arteriovenous-fistula-creation
#6
Weng Jun Tang, Arman Zaharil Mat Saad
INTRODUCTION: Arteriovenous fistula is a lifeline for end-stage kidney disease patients on dialysis. The quality of the vein and artery to be used plays a crucial role in attaining a functioning, reliable and long-lasting arteriovenous fistula. The aim of the study is to present an alternative for haemodialysis access to preserve the upper arm vasculature for future use - the forearm loop arteriovenous fistula. METHODS: From October 2015 to September 2016, 202 patients with chronic kidney disease (CKD), stages 4 and 5, underwent arteriovenous fistula creation at the Universiti Sains Malaysia Hospital, Malaysia...
November 13, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/29148005/microsurgery-for-wrist-arteriovenous-fistula-creation-in-children-a-retrospective-cohort-study
#7
Afram Akturk, Roel Bakx, Michiel J S Oosterveld, Jim C H Wilde, Mirza M Idu
INTRODUCTION: Creating functional arteriovenous fistulae (AVF) at the wrist is challenging in paediatric patients because of the small calibre of the blood vessels. METHODS: We report our experience with AVF surgery in children younger than 15 years of age using microsurgical techniques. Twenty-five patients underwent AVF surgery between 2003 and 2015 (20 for haemodialysis, 4 for plasmapheresis and 1 for parenteral nutrition). Median (range) age was 9 (2-15) years and median weight was 24 (8-61) kg...
November 13, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/29148001/an-arterioarterial-prosthetic-graft-as-an-alternative-option-for-haemodialysis-access-a-systematic-review
#8
Matthew J Grima, Bianca Vriens, Peter J Holt, Eric Chemla
INTRODUCTION: All arteriovenous fistula/grafts options should be exhausted before haemodialysis is carried out via central venous catheters (CVC). CVCs carry high morbidity and mortality risks and in some patients, the central veins could be exhausted. In these patients, an arterioarterial prosthetic loop (AAPL) or straight graft can be the only option for haemodialysis. A systematic review was thus carried out to look at the use of arterioarterial graft for haemodialysis, with regards to dialysis adequacy, complications, and patency rates...
November 10, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/29147999/selective-placement-of-autogenous-arteriovenous-fistulae-in-an-over-80-year-old-population
#9
Keagan Werner-Gibbings, Liesl Ischia, William Butcher, Richard Ward-Harvey, Jonathan Stewart, Mark J Jackson
INTRODUCTION: With improved life expectancy and quality of life, elderly patients constitute a progressively larger fraction of consumers utilising renal replacement therapy (RRT). Although substantial data exist for younger cohorts, minimal evidence exists for outcomes of arteriovenous fistula (AVF) and central catheters (CVC) placed in those patients over 80 years. We examined outcomes of primary AVF placement in this cohort to ascertain durability and benefits of AVF in the over 80-year-old population...
November 9, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/29147997/drug-eluting-balloon-angioplasty-for-assisted-maturation-of-failing-fistulae
#10
Alexandros Mallios, Jeffrey Hull, Benoit Boura, Alessandro Costanzo, Myriam Combes
OBJECTIVE: To present our experience of balloon-assisted maturation with drug-eluting balloon dilation in patients with recurrent failing arteriovenous fistulae. CASE SERIES: Three patients (all males, mean age 71 years) with a complex history of failed attempts at native fistula creation underwent surgical creation of arteriovenous fistulae. Two patients had a two-stage brachio-brachial fistula and 1 had a brachio-cephalic fistula that also required subsequent elevation...
November 13, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/29147162/high-preoperative-neutrophil-lymphocyte-ratio-nlr-and-red-blood-cell-distribution-width-rdw-as-independent-predictors-of-native-arteriovenous-fistula-failure
#11
Rashid Usman, Muhammad Jamil, Muhammad Naveed
Objective: To study the association between a high preoperative neutrophil lymphocyte ratio (NLR) and red cell distribution width (RDW) with arteriovenous fistula (AVF) failure, as well as to determine the cut-off values in a South Asian population. Materials and Methods: A total of 150 consecutive patients with a failed fistula who presented in the Department of Vascular Surgery between January 2014 and January 2016. Patients fulfilling the inclusion criteria were selected as defined as Case. They were compared with 150 patients who had matured fistulae (Control)...
September 25, 2017: Annals of Vascular Diseases
https://www.readbyqxmd.com/read/29145350/ultrasonographic-evaluation-of-complications-related-to-transfemoral-arterial-procedures
#12
Eun Ju Chun
The transfemoral arterial approach is used to gain access for angiography, percutaneous coronary interventions, or various endovascular therapies. To decrease the risk of procedure-related vascular complications, it is recommended to puncture the common femoral artery in its middle segment. However, due to inadequate access or anatomical variability, various complications, including hematoma, pseudoaneurysm, arteriovenous fistula, thrombosis, or dissection, can occur after transfemoral arterial interventions...
August 25, 2017: Ultrasonography
https://www.readbyqxmd.com/read/29142815/multifactorial-genesis-of-a-seeming-case-of-pulmonary-hypertension
#13
Rita Leonarda Musci, Lucrezia De Michele, Carlo D'Agostino, Paolo Colonna
Herein, we report the case of a 44-year-old female with end-stage renal disease on hemodialysis. She was admitted to our hospital to evaluate if she was eligible for a kidney transplant. Transthoracic echocardiography showed a markedly dilated coronary sinus and an unexpected finding of increased right ventriculoatrial gradient. A saline contrast echocardiography to confirm the presence of persistent left superior vena cava (PLSVC) was not performed because of arteriovenous fistula (FAV) for hemodialysis on the left forearm...
October 2017: Journal of Cardiovascular Echography
https://www.readbyqxmd.com/read/29142803/unprovoked-pulmonary-embolism-in-a-young-patient-with-marfan-syndrome
#14
Stella Pak, Andrew Kilgore, Rosanne Thornhill, Kyle Rako, Ali Meier, Gavriella Pora, Jillian M Costello, Christine Dee
Marfan syndrome is a rare connective tissue disorder with a prevalence of approximately 2 to 3 per 10,000 individuals. There have been some reports of young patients with Marfan syndrome developing arteriovenous thromboembolism. These events were unprovoked and recurrent. Owing to its rarity, hypercoagulopathy and other metabolic derangement in patients with Marfan syndrome remains largely unknown. Herein, we report a case of a young man with Marfan syndrome who had myocardial infarction and pulmonary embolism...
September 5, 2017: Curēus
https://www.readbyqxmd.com/read/29142782/massive-left-sided-congestive-colitis-due-to-idiopathic-inferior-mesenteric-arteriovenous-malformation
#15
Laura Martí Gelonch, Jose Maria Enríquez-Navascués, Tania Pastor Bonel, Yolanda Saralegui Ansorena
Arteriovenous malformations (AVM) of the inferior mesenteric artery are rare. They may be primary (congenital or idiopathic) or secondary (acquired) after trauma or of iatrogenic origin. Of the abdominal AVM, the inferior mesenteric trunk is the least commonly involved. Most reported cases are of iatrogenic origin, resulting from colon surgery. Only 17 cases have been described and published in the literature. The objective of this work is to make known a case treated in our center. We present a case of 73-year old male, who came to the emergency service with symptoms of abdominal distension, pain lasting 48 hours along with months of diarrhoea...
2017: Journal of Clinical Imaging Science
https://www.readbyqxmd.com/read/29142484/contemporary-management-of-pulmonary-arteriovenous-malformations
#16
REVIEW
Nicholas Rauh, John Gurley, Sibu Saha
Pulmonary arteriovenous malformations (PAVMs) are atypical vascular structures involving a direct connection between the pulmonary arterial and venous circulations. While PAVMs are a relatively uncommon disorder, unmanaged cases are at risk for the development of serious complications including embolization and infection. Since their first description in 1897, PAVMs have been identified and treated in a variety of ways. Advancements in diagnostic methods and operative techniques have allowed for more effective treatment of the disease...
December 2017: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/29141890/british-thoracic-society-clinical-statement-on-pulmonary-arteriovenous-malformations
#17
Claire L Shovlin, Robin Condliffe, James W Donaldson, David G Kiely, Stephen J Wort
Pulmonary arteriovenous malformations (PAVMs) are structurally abnormal vascular communications that provide a continuous right-to-left shunt between pulmonary arteries and veins. Their importance stems from the risks they pose (>1 in 4 patients will have a paradoxical embolic stroke, abscess or myocardial infarction while life-threatening haemorrhage affects 1 in 100 women in pregnancy), opportunities for risk prevention, surprisingly high prevalence and under-appreciation, thus representing a challenging condition for practising healthcare professionals...
December 2017: Thorax
https://www.readbyqxmd.com/read/29141889/pulmonary-arteriovenous-malformations-emerge-from-the-shadows
#18
EDITORIAL
Claire L Shovlin, Robin Condliffe, James W Donaldson, David G Kiely, Stephen J Wort
No abstract text is available yet for this article.
December 2017: Thorax
https://www.readbyqxmd.com/read/29141045/csf-in-the-ventricles-of-the-brain-behaves-as-a-relay-medium-for-arteriovenous-pulse-wave-phase-coupling
#19
William E Butler, Pankaj K Agarwalla, Patrick Codd
The ventricles of the brain remain perhaps the largest anatomic structure in the human body without established primary purpose, even though their existence has been known at least since described by Aristotle. We hypothesize that the ventricles help match a stroke volume of arterial blood that arrives into the rigid cranium with an equivalent volume of ejected venous blood by spatially configuring cerebrospinal fluid (CSF) to act as a low viscosity relay medium for arteriovenous pulse wave (PW) phase coupling...
2017: PloS One
https://www.readbyqxmd.com/read/29140981/wavelet-brain-angiography-suggests-arteriovenous-pulse-wave-phase-locking
#20
William E Butler
When a stroke volume of arterial blood arrives to the brain, the total blood volume in the bony cranium must remain constant as the proportions of arterial and venous blood vary, and by the end of the cardiac cycle an equivalent volume of venous blood must have been ejected. I hypothesize the brain to support this process by an extraluminally mediated exchange of information between its arterial and venous circulations. To test this I introduce wavelet angiography methods to resolve single moving vascular pulse waves (PWs) in the brain while simultaneously measuring brain pulse motion...
2017: PloS One
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