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Revista Espanola de Cardiologia... Jul 2019
Topics: Aged; Arteriovenous Fistula; Computed Tomography Angiography; Diagnosis, Differential; Heart Auscultation; Heart Murmurs; Humans; Iliac Artery; Iliac Vein; Male
PubMed: 30037540
DOI: 10.1016/j.rec.2018.06.021 -
Journal of Neurosurgical Sciences Feb 2022Vertebral arterio-venous fistulas (VAVFs) are uncommon lesions that can arise spontaneously or secondarily to iatrogenic or mechanical trauma. Among spontaneous cases,...
INTRODUCTION
Vertebral arterio-venous fistulas (VAVFs) are uncommon lesions that can arise spontaneously or secondarily to iatrogenic or mechanical trauma. Among spontaneous cases, it is most commonly found to be associated with neurofibromatosis type 1 (NF1).
EVIDENCE ACQUISITION
We performed a systematic review of the literature to obtain information regarding demographics, clinical presentation, treatment modalities and outcome of VAVFs associated with NF1. A literature search was performed by using databases PubMed Central, Embase, Cochrane Library, and Ovid MEDLINE. Also, the grey area search was done using the "Google Scholar" search engine. On screening of the original full-text English language articles, a total of 48 cases were considered suitable for inclusion in this review.
EVIDENCE SYNTHESIS
VAVFs in NF1 commonly present between 3 and 6 decade of life affecting females 2.4 times more than males. Left-sided fistulae were more common than the right side and most seen in the upper V2 segment of the vertebral artery. Most VAVFs in NF 1 patients were treated with constructive (occlusion of fistula only) endovascular therapy (N.=26) with a high success rate. Moreover, pooled proportion of the outcome data have shown significant difference between the endovascular constructive and destructive procedure.
CONCLUSIONS
The spontaneous VAVF, commonly associated with NF-1, often requires treatment. Awareness of the coexistence between NF1 and VAVF is crucial to avoid diagnostic delays and unnecessary surgical intervention leading to disastrous outcomes. Endovascular treatment is the preferred treatment approach while open surgical treatment is required in some complex fistulae and failure of endovascular techniques.
Topics: Arteriovenous Fistula; Endovascular Procedures; Female; Humans; Male; Neurofibromatosis 1; Spine; Vertebral Artery
PubMed: 33870666
DOI: 10.23736/S0390-5616.21.05232-2 -
The Journal of Vascular Access Jan 2023Arteriovenous fistula (AVF) creation may negatively affect cardiac structure and function and impact cardiovascular mortality. The objective of this study was to develop...
BACKGROUND
Arteriovenous fistula (AVF) creation may negatively affect cardiac structure and function and impact cardiovascular mortality. The objective of this study was to develop and characterize the cardiac changes following AVF creation in a murine AVF model.
METHODS
AVFs were constructed using the carotid artery and jugular vein in C57BL/6 mice. Sham-operated AVF mice served as the control group. 2D-echocardiography was performed prior to AVF creation (baseline) and at 7 and 21 days after creation in AVF and sham-operated mice. Picrosirius red was used to stain the left ventricle for collagen production.
RESULTS
The cardiac output (CO), left ventricular end diastolic (LVEDD) and systolic (LVESD) diameter, and end-diastolic (LVEDV) and systolic (LVESV) volume was significantly increased at 7 and 21 days in AVF compared to sham-operated mice. There was also a significant increase in CO, LVEDD, LVESD, LVEDV, and LVESV from baseline to 21 days within the AVF group, but not the sham-operated mice. There was a significant decrease in ejection fraction and fractional shortening at 21 days in AVF compared to sham-operated mice. Picrosirius red was significantly more prominent around both the perivascular and interstitial areas of the cardiac tissue from AVF mice compared to sham-operated AVF mice at 21 days.
CONCLUSIONS
The creation of an AVF in our murine model leads to cardiac changes such as increased cardiac output, left ventricular dilation, and cardiac fibrosis, while showing reductions of ejection fraction and fractional shortening.
Topics: Mice; Animals; Disease Models, Animal; Mice, Inbred C57BL; Heart; Arteriovenous Fistula; Arteriovenous Shunt, Surgical
PubMed: 34144670
DOI: 10.1177/11297298211026083 -
British Journal of Neurosurgery Aug 2023Dural arteriovenous fistula (AVF) is known to occur after craniotomy, but mixed pial and dural AVF after craniotomy has not been reported. A 45-year-old man who had... (Review)
Review
Dural arteriovenous fistula (AVF) is known to occur after craniotomy, but mixed pial and dural AVF after craniotomy has not been reported. A 45-year-old man who had undergone surgical clipping of an unruptured aneurysm 2 years previously presented with small subcortical hemorrhage from mixed pial and dural AVF. Surgical disconnection could not be cured completely due to the granulomatous tissue around the aneurysm, and the presence of an undetected shunt. Postoperative digital subtraction angiography showed a new pial AVF supplied by the middle cerebral artery pial branches. Many branches were associated with the remnant aneurysm and pial AVF, so we did not try to embolize the fistula. Gamma knife surgery was performed as adjuvant radiotherapy, which achieved angiographically complete occlusion of the shunt points. Multimodal approaches including surgery, endovascular intervention, and radiotherapy are needed for radiological and clinical cure of mixed pial and dural AVF. Long-term follow up is essential.
Topics: Male; Humans; Middle Aged; Cerebral Angiography; Central Nervous System Vascular Malformations; Craniotomy; Arteriovenous Fistula; Arteries
PubMed: 31597495
DOI: 10.1080/02688697.2019.1672860 -
Hemodialysis International.... Oct 2022The blood vessel in the upper extremity arteriovenous fistula (AVF) is deep in the tissue, and cannulation in AVF is frequently associated with blood oozing, hematoma,... (Randomized Controlled Trial)
Randomized Controlled Trial
BACKGROUND
The blood vessel in the upper extremity arteriovenous fistula (AVF) is deep in the tissue, and cannulation in AVF is frequently associated with blood oozing, hematoma, or aneurysm. This study evaluated the performance of color ultrasound in-plane guided cannulation technique during upper extremity high-AVF cannulation in patients with hemodialysis.
METHODS
A total of 40 patients with hemodialysis who needed cannulation in upper extremity AVF were recruited in the study, and the patients were randomly divided into observation group and control group. Color Doppler ultrasound was used to guide cannulation in the observation group and in the control group blind cannulation method was applied. The success rate of one-time cannulation, the incidence of subcutaneous hematoma, oozing, and pain caused by incorrect fistula cannulation as well as the satisfaction score of the patients were compared to evaluate the effect and advantages of color ultrasound-guided cannulation.
RESULTS
The one-time success rate of internal fistula cannulation in the observation group (98.71%) was significantly higher than that in the control group (88.27%). The incidence rates of hematoma, oozing, pain, and total failure events were significantly reduced in the observation group. The average satisfaction degree in the observation group was also significantly higher than that of the control group.
CONCLUSION
Ultrasonic-guided cannulation effectively enhances the success rate of cannulation in upper extremity AVF, reduces the incidence of cannulation failures, and improves the satisfaction level in the patients.
Topics: Arm; Arteriovenous Fistula; Arteriovenous Shunt, Surgical; Catheterization; Hematoma; Humans; Pain; Renal Dialysis; Upper Extremity
PubMed: 36068186
DOI: 10.1111/hdi.13043 -
Mayo Clinic Proceedings Aug 2022
Topics: Arteriovenous Fistula; Arteriovenous Shunt, Surgical; Humans
PubMed: 35933143
DOI: 10.1016/j.mayocp.2022.05.032 -
World Journal of Gastroenterology Jul 2014Arteriovenous fistulas between the inferior mesenteric artery and vein are rare, with only 26 primary and secondary cases described in the literature. Secondary fistulas... (Review)
Review
Arteriovenous fistulas between the inferior mesenteric artery and vein are rare, with only 26 primary and secondary cases described in the literature. Secondary fistulas occur following operations of the left hemicolon and manifest as abdominal pain, abdominal mass, gastrointestinal bleeding, colonic ischemia and portal hypertension. Symptom intensities are flow-dependent, and can range from minimal symptoms to severe heart failure due to left to right shunt. Diagnosis is usually established by radiological or intraoperative examination. Treatment options include embolization and/or surgical resection. Therapeutic decisions should be adapted to the unique characteristics of the fistula on an individual basis. A new case of a primary arteriovenous fistula is described and discussed along with a complete review of the literature. The patient in this report presented with signs and symptoms of colonic ischemia without portal hypertension. The optimal treatment for this patient required a combination of embolization and surgical operation. The characteristics of these rare inferior mesenteric arteriovenous fistulas are examined and some considerations concerning diagnostic and therapeutic strategies that should be followed are presented.
Topics: Adult; Aged; Aged, 80 and over; Arteriovenous Fistula; Colectomy; Colon; Colostomy; Embolization, Therapeutic; Female; Humans; Magnetic Resonance Angiography; Male; Mesenteric Artery, Inferior; Mesenteric Ischemia; Mesenteric Veins; Middle Aged; Tomography, X-Ray Computed; Treatment Outcome; Young Adult
PubMed: 25009407
DOI: 10.3748/wjg.v20.i25.8298 -
Handbook of Clinical Neurology 2017Dural arteriovenous fistulas are abnormal communications, within the dural leaflets, between meningeal arteries and dural venous sinuses and/or subarachnoid veins.... (Review)
Review
Dural arteriovenous fistulas are abnormal communications, within the dural leaflets, between meningeal arteries and dural venous sinuses and/or subarachnoid veins. Although many fistulas remain clinically silent and do not require treatment, presence of cortical venous reflux, intracranial bleed, and intolerable symptoms are the main indications for treatment. A thorough understanding of the natural history is of prime importance in the decision making and management of these lesions. In this chapter we discuss the epidemiology and natural history of intracranial dural arteriovenous fistulae.
Topics: Arteriovenous Fistula; Central Nervous System Vascular Malformations; Cerebral Angiography; Cranial Sinuses; Decision Making; Dura Mater; Humans; Meningeal Arteries; Prognosis
PubMed: 28552162
DOI: 10.1016/B978-0-444-63640-9.00009-6 -
Cutis Nov 2020
Topics: Arteriovenous Fistula; Humans; Scalp
PubMed: 33465200
DOI: 10.12788/cutis.0121 -
Clinical and Experimental Nephrology Apr 2015
Topics: Aged; Arteriovenous Fistula; Embolization, Therapeutic; Humans; Kidney; Male; Tomography, X-Ray Computed
PubMed: 25297341
DOI: 10.1007/s10157-014-1039-1