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World Neurosurgery: X Jul 2023The coexistence of meningioma and dural arteriovenous fistula (dAVF) is a rare, but highly complex condition. Various pathophysiological mechanisms underlie intracranial... (Review)
Review
BACKGROUND
The coexistence of meningioma and dural arteriovenous fistula (dAVF) is a rare, but highly complex condition. Various pathophysiological mechanisms underlie intracranial meningiomas with continuous or distant dAVFs. We describe a case of coexisting meningioma and dAVF with a systematic review of the literature.
RESULT
Including the present case, there are 21 reported cases of coexisting intracranial dAVF and meningioma. The patients' ages ranged from 23 to 76 years, with a mean age of 61 years. The most common presenting symptom was headache. The dAVFs were commonly located at the transverse-sigmoid sinus (43%) and superior sagittal sinus (24%). The most common meningioma locations were the tentorium and parietal convexity. In 76% of the cases, the meningioma occluded the sinus. The most common dAVF treatment was transcatheter arterial embolization, followed by tumor resection (52%). Among the 20 cases with available outcome data, 90% reported favorable outcomes.
CONCLUSION
This report highlights some of the features of coexisting dAVF and meningioma and presents a systematic review of other reports on this phenomenon. Through an in-depth analysis of the literature, we highlight some of the leading theories regarding the causes of concomitant dAVF and meningiomas. Our report supports one of the leading theories that impaired venous return, whether through the occlusion of sinuses or sinus manipulation during surgery, plays a role in the development of dAVF. Further understanding may help guide future clinical decision-making and surgical planning.
PubMed: 37235061
DOI: 10.1016/j.wnsx.2023.100217 -
Child's Nervous System : ChNS :... Jun 2024Pediatric non-galenic pial arteriovenous fistulas (pAVFs) are rare vascular malformations that are characterized by a pial arterial-venous connection without an... (Review)
Review
INTRODUCTION
Pediatric non-galenic pial arteriovenous fistulas (pAVFs) are rare vascular malformations that are characterized by a pial arterial-venous connection without an intervening capillary bed. Outcomes and treatment strategies for pAVFs are highly individualized, owing to the rarity of the disease and lack of large-scale data guiding optimal treatment approaches.
METHODS
We performed a systematic review of pediatric patients (< 18 years at diagnosis) diagnosed with a pAVF by digital subtraction angiogram (DSA). The demographics, treatment modalities, and outcomes were documented for each patient and clinical outcome data was collected. Descriptive information stratified by outcome scores were classified as follows: 1 = excellent (no deficit and full premorbid activity), 2 = good (mild deficit and full premorbid activity), 3 = fair (moderate deficit and impaired activity), 4 = poor (severe deficit and dependent on others), 5 = death.
RESULTS
A total of 87 studies involving 231 patients were identified. Median age at diagnosis was 3 years (neonates to 18 years). There was slight male preponderance (55.4%), and 150 subjects (81.1%*) experienced excellent outcomes after treatment. Of the 189 patients treated using endovascular approaches, 80.3% experienced excellent outcomes and of the 15 patients surgically treated subjects 75% had an excellent outcome. The highest rate of excellent outcomes was achieved in patients treated with Onyx (95.2%) and other forms of EvOH (100%). High output heart failure and comorbid vascular lesions tended to result in worse outcomes, with only 54.2% and 68% of subjects experiencing an excellent outcome, respectively. *Outcomes were reported in only 185 patients.
CONCLUSION
pAVFs are rare lesions, necessitating aggregation of patient data to inform natural history and optimal treatment strategies. This review summarizes the current literature on pAVF in children, where children presenting with heart failure as a result of high flow through the lesion were less likely to experience an excellent outcome. Prospective, large-scale studies would further characterize pediatric pAVFs and enable quantitative analysis of outcomes to inform best treatment practices.
Topics: Humans; Child; Arteriovenous Fistula; Pia Mater; Child, Preschool; Adolescent; Infant; Female; Infant, Newborn; Treatment Outcome; Male; Intracranial Arteriovenous Malformations
PubMed: 38506930
DOI: 10.1007/s00381-024-06352-5 -
Clinical Cardiology Aug 2023Drug-coated balloons (DCBs) have been used in dialysis patients with arteriovenous fistula (AVF) stenosis, but whether DCBs have advantages over ordinary balloons is... (Meta-Analysis)
Meta-Analysis Review
Drug-coated balloons (DCBs) have been used in dialysis patients with arteriovenous fistula (AVF) stenosis, but whether DCBs have advantages over ordinary balloons is still controversial. A meta-analysis was designed to investigate the safety and efficacy of DCBs and common balloons (CBs) in the treatment of AVF stenosis. We searched the PubMed, EMBASE, and China National Knowledge Internet (CNKI) databases for randomized controlled trials that evaluated the comparison of DCB angioplasty versus CB angioplasty for AVF stenosis in dialysis patients and reported at least one outcome of interest. The results showed that the DCB group had a higher first-stage patency rate of the target lesion 6 months [odds ratio, OR = 2.31, 95% confidence interval, CI: (1.69, 3.15), p < .01] and 12 months [OR = 2.09, 95% CI: (1.50, 2.91), p < .01] after surgery. There was no statistically significant difference in all-cause mortality between the two groups at 6 months [OR = 0.85, 95% CI: (0.47, 1.52), p = .58] and 12 months [OR = 0.99, 95% CI: (0.60, 1.64), p = .97]. Compared with CB, DCBs as a new endovascular treatment for AVF stenosis have a higher primary patency rate of target lesions and can delay the occurrence of restenosis. There is no evidence that DCB can increase the mortality of patients.
Topics: Humans; Vascular Patency; Graft Occlusion, Vascular; Constriction, Pathologic; Treatment Outcome; Coated Materials, Biocompatible; Time Factors; Angioplasty, Balloon; Arteriovenous Fistula; Paclitaxel
PubMed: 37417371
DOI: 10.1002/clc.24078 -
Frontiers in Cardiovascular Medicine 2023Autogenous arteriovenous fistula (AVF) is an efficient hemodialysis access for patients with end-stage kidney disease (ESKD). The specific threshold of vein diameter... (Review)
Review
BACKGROUND
Autogenous arteriovenous fistula (AVF) is an efficient hemodialysis access for patients with end-stage kidney disease (ESKD). The specific threshold of vein diameter still not reached a consensus.
METHOD
We conducted a comprehensive search in PubMed, Embase, and Web of Science databases for articles which comparing the treatment outcomes of AVF with 2 mm as vein diameter threshold. Fixed and random effect model were used for synthesis of results. Subgroup analysis was designed to assess the risk of bias.
RESULT
Eight high-quality articles were included finally. Among a total of 1,075 patients (675 males and 400 females), 227 and 809 patients possessed <2 mm and ≥2 mm vein respectively. Apart from gender and coronary artery disease ( < 0.05), there was no significant difference in age, diabetes, hypertension or radial artery between maturation and non-maturation groups. The functional maturation rate was lower in patients with <2 mm vein according to fixed effect model [OR = 0.19, 95% CI (0.12, 0.30), < 0.01]. There was no significant difference in primary [OR = 0.63, 95% CI (0.12, 3.25), = 0.58] or cumulative patency rates [OR = 0.40, 95% CI (0.13, 1.19), = 0.10].
CONCLUSION
Vein diameter less than 2 mm has a negative impact on the functional maturation rate of AVF, while it does not affect the primary and cumulative patency rates (12 months).
PubMed: 37808887
DOI: 10.3389/fcvm.2023.1226136 -
Renal Failure Dec 2023Aromatherapy has been used for patients on maintenance hemodialysis (MHD), but the outcomes are still controversial. Thus, we conducted this study to systematically... (Meta-Analysis)
Meta-Analysis
Aromatherapy has been used for patients on maintenance hemodialysis (MHD), but the outcomes are still controversial. Thus, we conducted this study to systematically evaluate the effect of aromatherapy on the quality of life of patients on MHD. We searched the PubMed, Embays, Scopus, Web of Science, and CNKI databases for randomized controlled trials that evaluated the use of aromatherapy in dialysis patients and reported at least one outcome of interest. Twenty-two relevant studies were included in the meta-analysis. The meta-analysis revealed that aromatherapy significantly increased subjective sleep quality (a lower score indicates better sleep quality) [standardized mean difference (SMD) = -1.52, 95% CI (-2.38, -0.67), < 0.01] and reduced fatigue [SMD = -1.14, 95% CI (-1.95, -0.33), = 0.01], anxiety [SMD = -1.38, 95% CI (-2.09, -0.67), < 0.01], symptoms of restless legs syndrome [RLS; SMD = -1.71, 95% CI (-2.09, -1.33), < 0.01], and arteriovenous fistula puncture pain [SMD= -1.56, 95% CI (-2.60, -0.52), < 0.01]. Aromatherapy may be used as a novel complementary and alternative therapy to improve sleep quality and reduce fatigue, anxiety, symptoms of RLS, and arteriovenous fistula puncture pain in patients on MHD.
Topics: Humans; Aromatherapy; Quality of Life; Pain; Renal Dialysis; Fatigue
PubMed: 36908215
DOI: 10.1080/0886022X.2022.2164202 -
Neurosurgical Review Dec 2023Spinal dural arteriovenous fistulas (SDAVFs) constitute the most common type of spinal vascular malformations. Their diagnosis requires spinal digital subtraction... (Meta-Analysis)
Meta-Analysis Review
Spinal dural arteriovenous fistulas (SDAVFs) constitute the most common type of spinal vascular malformations. Their diagnosis requires spinal digital subtraction angiography (DSA), which is time-consuming, requires catheterizing many vessels, and exposes patient to a high radiation and contrast doses. This study aims to evaluate the usefulness of time-resolved MR angiography (TR-MRA) in SDAVF diagnosis. We performed a systematic review of the PubMed and EMBASE databases followed by a meta-analysis. TR-MRA was an index test, and spinal DSA was a reference. Of the initial 324 records, we included 4 studies describing 71 patients with SDAVFs. In 42 cases, TR-MRA was true positive, and in 21 cases, it was true negative. We found 7 false-positive cases and 1 false negative. TR-MRA allowed for shunt level identification in 39 cases. Of these, the predicted level was correct in 23 cases (59%), to within 1 level in 38 cases (97.4%) and to within 2 levels in 39 cases (100%). The diagnostic odds ratio was 72.73 (95% CI [10.30; 513.35]), z = 4.30, p value < 0.0001. The pooled sensitivity was 0.98 (95% CI [0.64; 1.00]), and the pooled specificity was 0.79 (95% CI [0.10; 0.99]). The AUC of the SROC curve was 0.9. TR-MRA may serve as a preliminary study to detect SDAVFs and localize the shunt level with sensitivity and specificity as high as 98% and 79%, respectively. Unless the TR-MRA result is unequivocal, it should be followed by a limited spinal DSA.
Topics: Humans; Contrast Media; Magnetic Resonance Angiography; Spine; Angiography, Digital Subtraction; Central Nervous System Vascular Malformations
PubMed: 38072856
DOI: 10.1007/s10143-023-02242-7 -
Journal of Clinical Medicine Sep 2023Adequate cannulation technique (CT) methods and successful puncture are essential for hemodialysis (HD) and arteriovenous fistula (AVF) maintenance. This systematic... (Review)
Review
Adequate cannulation technique (CT) methods and successful puncture are essential for hemodialysis (HD) and arteriovenous fistula (AVF) maintenance. This systematic review and meta-analysis was designed to identify which CT allows better AVF primary patency and lower rates of complications in HD patients. The search was carried out on the CINAHL, MEDLINE, Cochrane Library, and Joanna Briggs Institute Library databases to identify all randomized controlled trials (RCTs) and observational studies comparing clinical outcomes of buttonhole (BH) versus rope ladder cannulation (RL) from 2010 to 2022. The Risk-of-Bias (Rob 2) tool was used for RCTs and the ROBINS-I was used for non-randomized studies. RevMan 5.4 was used for the meta-analysis. A total of five RCTs, one quasi-randomized controlled trial, and six observational studies were included. When compared with RL cannulation, BH cannulation significantly increased bacteremia (RR, 2.76, 95% CI (1.14, 6.67), = 0.02) but showed no differences in AVF primary patency (HR, 1.06, 95% CI (0.45, 4.21), = 0.90). There was no thrombosis reduction (RR, 0.51, 95% CI (0.23, 1.14), = 0.10) or intervention number reduction (RR, 0.93, 95% CI (0.49, 1.80), = 0.84) with BH. Outcomes like pain, hematoma, and aneurism could not be merged due to a lack of data, reported as medians, as well as due to different definitions. The quality in general was poor and the heterogeneity among the studies prevented us from merging the outcomes.
PubMed: 37762887
DOI: 10.3390/jcm12185946 -
Journal of Nephrology Mar 2024Arteriovenous fistula represents the preferred vascular access for patients with kidney failure requiring hemodialysis. Surgeons have traditionally used physical... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Arteriovenous fistula represents the preferred vascular access for patients with kidney failure requiring hemodialysis. Surgeons have traditionally used physical examination to identify the most suitable vessels. This meta-analysis aims to evaluate whether ultrasound mapping should be routinely performed before arteriovenous fistula creation.
METHODS
Medline, Scopus, Web of Science and CENTRAL were systematically searched from inception to November 1, 2022. Randomized controlled trials and cohort studies comparing routine ultrasound mapping to physical examination in terms of arteriovenous fistula patency were included. Meta-analysis was performed by fitting random-effects models. The study protocol has been prospectively registered in PROSPERO (CRD42023402390).
RESULTS
Overall, 18 studies were included, comprising 3655 participants. Routine pre-operative ultrasound mapping was associated with significantly lower rates of primary arteriovenous fistula failure (Risk Ratio-RR: 0.56, 95% confidence intervals-CI: 0.37-0.84, low certainty). A significant outcome was observed by separately pooling randomized controlled trials (RR: 0.37, 95% CI: 0.25-0.54). Routine ultrasound mapping was also associated with significantly higher rates of 1-year primary arteriovenous fistula patency (RR: 1.33, 95% CI: 1.19-1.47, moderate certainty). This effect remained significant in the analysis of randomized controlled trials (RR: 1.26, 95% CI: 1.02-1.56).
CONCLUSIONS
Implementing routine pre-operative ultrasound mapping of vessels is associated with significantly better outcomes in terms of early arteriovenous fistula failure and primary patency rates at 12 months. Further research should confirm the long-term benefits of routine ultrasound examination and evaluate its cost-effectiveness in different populations.
Topics: Humans; Arteriovenous Shunt, Surgical; Renal Dialysis; Ultrasonography; Vascular Patency; Preoperative Care; Kidney Failure, Chronic
PubMed: 38133741
DOI: 10.1007/s40620-023-01814-6 -
Archives of Academic Emergency Medicine 2024Pain experienced during the insertion of a catheter into the arteriovenous fistula (AVF) and restless legs syndrome (RLS) are prevalent issues among Hemodialysis (HD)... (Review)
Review
The Effect of Aromatherapy with Lavender on Pain of Needle Insertion and Severity of Restless Legs Syndrome in Hemodialysis Patients; a Systematic Review and Meta-analysis.
INTRODUCTION
Pain experienced during the insertion of a catheter into the arteriovenous fistula (AVF) and restless legs syndrome (RLS) are prevalent issues among Hemodialysis (HD) patients. The primary objective of this systematic review and meta-analysis was to consolidate the findings from randomized clinical trial (RCT) studies examining the impact of aromatherapy with lavender on the pain associated with AVF catheter insertion and RLS in HD patients.
METHODS
A systematic search was conducted on PubMed, Web of Science, Scopus, Cochrane, Embase, ClinicalTrials.gov, and Google Scholar search engine from inception to August 1, 2022, using keywords extracted from Medical Subject Headings, such as "Aromatherapy", "Lavender", "Arteriovenous fistula", "Pain", "Restless legs syndrome", and "Hemodialysis".
RESULTS
Finally, eleven articles were included in this systematic review and meta-analysis. The results showed that aromatherapy reduced the average pain of catheter insertion in AVF compared to the control group (Standard Mean Difference: -1.60, 95% Confidence Interval: -2.32 to -0.87, Z=4.32, I:90.3%, P<0.001). Also, aromatherapy massage reduced the average severity of RLS compared to the control group, which was statistically significant (Weighted Mean Difference: -13.21, 95% Confidence Interval: -17.50 to -8.91, Z=6.03, I:93.0%, P<0.001). Also, the subgroup analysis showed that lavender in the intervention group significantly decreased the pain intensity compared to the "no intervention" group (P<0.001), yet it was not significant compared to the placebo group (P=0.12).
CONCLUSION
In summary, the findings indicate a notable reduction in catheter insertion pain in AVF and relief from RLS among HD patients through the use of lavender essential oil. As a result, future research is encouraged to include a comparison of lavender's effects with those of a placebo group.
PubMed: 38022715
DOI: 10.22037/aaem.v12i1.2071 -
World Neurosurgery: X Jul 2023Carotid-cavernous fistulas (CCFs) represent a group of rare, abnormal arteriovenous communications between the carotid arterial system and the cavernous sinuses (CS).... (Review)
Review
BACKGROUND AND OBJECTIVES
Carotid-cavernous fistulas (CCFs) represent a group of rare, abnormal arteriovenous communications between the carotid arterial system and the cavernous sinuses (CS). CCFs often produce ophthalmologic symptoms related to increased CS pressures and retrograde venous drainage of the eye. Although endovascular occlusion remains the preferred treatment for symptomatic or high-risk CCFs, most of the data for these lesions is limited to small, single-center series. As such, we performed a systematic review and meta-analysis evaluating endovascular occlusions of CCFs to determine any differences in clinical outcomes based on presentation, fistula type, and treatment paradigm.
METHOD
A retrospective review of all studies discussing the endovascular treatment of CCFs published through March 2023 was conducted using PubMed, Scopus, Web of Science, and Embase databases. A total of 36 studies were included in the meta-analysis. Data from the selected articles were extracted and analyzed using Stata software version 14.
RESULTS
1494 patients were included. 55.08% were female and the mean age of the cohort was 48.10 years. A total number of 1516 fistulas underwent endovascular treatment, 48.05% of which were direct and 51.95% of which were indirect. 87.17% of CCFs were secondary to a known trauma while 10.18% were spontaneous. The most common presenting symptoms were 89% exophthalmos (95% CI: 78.0-100.0; I = 75.7%), 84% chemosis (95% CI: 79.0-88.0; I = 91.6%), 79% proptosis (95% CI: 72.0-86.0; I = 91.8%), 75.0% bruits (95% CI: 67.0-82.0; I = 90.7%), 56% diplopia (95% CI: 42.0-71.0; I = 92.3%), 49% cranial nerve palsy (95% CI: 32.0-66.0; I = 95.1%), 39% visual decline (95% CI: 32.0-45.0; I = 71.4%), 32% tinnitus (95% CI: 6.0-58.0; I = 96.7%), 29% elevated intraocular pain (95% CI: 22.0-36.0; I = 0.0%), 31% orbital or pre-orbital pain (95% CI: 14.0-48.0; I = 89.9%) and 24% headache (95% CI: 13.0-34.0; I = 74.98%). Coils, balloons, and stents were the three most used embolization methods respectively. Immediate complete occlusion of the fistula was seen in 68% of cases and complete remission was seen in 82%. Recurrence of CCF occurred in only 35% of the patients. Cranial nerve paralysis after treatment was observed in 7% of the cases.
CONCLUSIONS
Exophthalmos, Chemosis, proptosis, bruits, cranial nerve palsy, diplopia, orbital and periorbital pain, tinnitus, elevated intraocular pressure, visual decline and headache are the most common clinical manifestations of CCFs. The majority of endovascular treatments involved coiling, balloons and onyx and a high percentage of CCF patients experienced complete remission with the improvement of their clinical symptoms.
PubMed: 37223772
DOI: 10.1016/j.wnsx.2023.100189