Endovascular Treatment for Renal Vein Embolism by a Renal Calculus After Percutaneous Nephrolithotomy.

Purpose: This report presents the endovascular strategies adopted to treat a kidney calculus venous embolism after percutaneous nephrolithotomy and the versatility of endovascular techniques to manage even the most unexpected renovascular complications after urological intervention. According to the literature available in PubMed, Cochrane, SciELO, and Science.gov repositories, this is the first case to our knowledge of renal vein calculus embolism as a complication of percutaneous treatment of kidney stones.

Pulmonary arteriovenous malformations in Rendu-Osler-Weber syndrome.

Rendu-Osler-Weber syndrome, also known as hereditary hemorrhagic telangiectasia, is an autosomal dominant hereditary disorder. It is characterized by presence of multiple arteriovenous malformations (AVMs) and telangiectasias. This article reports two cases of patients with Rendu-Osler-Weber syndrome who had pulmonary AVMs and underwent successful endovascular treatment.

Safety and efficacy of a new covered stent in hemodialysis vascular access outflow stenosis: A Brazilian multicenter retrospective study.

Background: Vascular stenosis commonly leads to dysfunction in hemodialysis vascular access. Although percutaneous transluminal angioplasty is an established treatment, stent utilization has increased in the last decade as an alternative solution to extend the access function. This study evaluated the safety and initial results of a new impermeable covered stent for treating vascular access outflow stenosis.

Impact of Ultrasound-Guided Foam Sclerotherapy for Pain Control in Patients with Chronic Venous Disease and Great Saphenous Vein Reflux.

Chronic venous disease (CVD) associated with great saphenous vein (GSV) reflux has a higher prevalence of pain in the lower limbs. This study evaluates the impact of ultrasound-guided foam sclerotherapy (UGFS) for GSV and symptom control, accessed by the visual analogue scale (VAS). Patients with CVD who underwent GSV-UGFS were included in this retrospective cohort (417 limbs).

Superficial femoral vein transposition as a solution for hemodialysis vascular access.

The significant growth in the number of individuals dependent on hemodialysis for renal replacement therapy and unrestricted use of short and long-term catheters have challenged vascular surgeons in search of solutions for patients whose options for access via the upper limbs have been exhausted and for the increasing rates of central venous stenosis in these patients. When access via the upper limbs is impossible, exceptional techniques can be used and the lower limbs offer feasible alternative vascular access sites for hemodialysis. This article reports a case of superficial femoral vein transposition to make a loop arteriovenous fistula in a patient with no possibility of access via the upper limbs and presents a literature review on this technique that remains little used.

Revisiting carotid endarterectomy: Neobulb technique using external carotid artery as a patch.

Objectives: This study describes an alternative carotid bifurcation endarterectomy technique in which the external carotid artery is used as a suture patch.

Methods: Charts of ten patients with atherosclerotic carotid stenosis that were treated using the neobulb technique between 2002 and 2019 were reviewed.

Results: No major surgical adverse event was observed in the postoperative assessments.

Radiofrequency Ablation for Axial Reflux Associated with Foam Sclerotherapy for Varicosities in One-Step Approach: A Prospective Cohort Study Comprising Large Diameters Saphenous Veins.

Objective: This study assessed the outcomes and impact on the quality of life following one-step outpatient radiofrequency ablation (RFA) and ultrasound guided foam sclerotherapy (USGFS) for large reflux with varicosities in the great saphenous vein (GSV).

Design: Prospective, single-centre, analytical cohort.

Materials And Methods: Thirty symptomatic patients having reflux in the GSV and varicosities (CEAP C3 to C6) were treated with RFA and USGFS simultaneously, in a single-step procedure, from March 2016 to December 2016.

Oversized balloon angioplasty for endovascular maturation of arteriovenous fistulae to accelerate cannulation and to decrease the duration of catheter use.

Background: The functional autologous arteriovenous fistula is considered the best vascular access for patients on hemodialysis. Some fistulae exhibit maturation problems after creation and do not reach adequate vessel diameter and flow in dialysis. The aim of this study was to describe our technique of oversized balloon angioplasty for assisted maturation of arteriovenous fistulae to accelerate the cannulation and to decrease the time of catheter use and its outcome.

Beneficial effects of the micronized purified flavonoid fraction (MPFF, Daflon® 500 mg) on microvascular damage elicited by sclerotherapy.

Objectives: To evaluate if the micronized purified flavonoid fraction (MPFF) treatment could reduce the side effects of sclerotherapy (a procedure frequently used to treat venous disease manifestations) by minimizing the inflammatory response within the surrounding tissues.

Method: Twenty-two male New Zealand rabbits were treated by gavage with micronized purified flavonoid fraction (MPFF; 300 mg/kg/day) or vehicle (10% lactose solution) during 21 consecutive days, starting 7 days before sclerotherapy. The sclerotherapy consisted of an injection containing 5% ethanolamine oleate solution in the rabbit's dorsal ear vein.

Use of microcirculatory parameters to evaluate clinical treatments of chronic venous disorder (CVD).

Objectives: To evaluate changes on cutaneous microangiopathy in chronic venous disorder (CVD) after use of Cirkan [venotonic drug containing Ruscus aculeatus (plant extract), hesperidine methylchalcone (flavonoid) and vitamin C], elastic compression stockings (ECS) or no treatment for four weeks.

Patients And Methods: Fifty-five female patients (85 legs), 25 to 57 years, with at least one limb classified as C2,s or C2,3,s (CEAP classification), were allocated consecutively, according to entrance order, in these three groups. Ten healthy women age-matched were also investigated.

Effects of cilostazol and pentoxifylline on forearm reactive hyperemia response, lipid profile, oxidative stress, and inflammatory markers in patients with intermittent claudication.

Peripheral arterial disease may lead to lower limb claudication and increased risk of systemic vascular dysfunction. In this article, the authors have investigated the peripheral vascular dysfunction evaluating forearm blood flow using venous occlusion plethysmography, lipid profile, and C-reactive protein in 60 patients with moderate intermittent claudication treated during 20 weeks with placebo (n = 16), cilostazol (200 mg/d; n = 17), or pentoxifylline (1200 mg/d; n = 15) in a randomized double-blinded clinical trial, taking into account smoking. Forearm blood flow after reactive hyperemia response (FBF(h) ) or oral nitroglycerine spray to evaluate endothelial-dependent and endothelial-independent vasodilation, respectively, pain-free and maximal walking distance, levels of C-reactive protein, triglycerides, cholesterol, low-density lipoprotein, and high-density lipoprotein-cholesterol in plasma were determined.

Use of microcirculatory parameters to evaluate chronic venous insufficiency.

Background: Microcirculatory impairment caused by chronic venous hypertension is usually not taken into account in chronic venous insufficiency, probably due to lack of practical means to observe it. The objective of this work was to use a new noninvasive technique to access quantitatively the cutaneous microangiopathy in female patients classified according to CEAP from C1 to C5 and matched with healthy controls.

Methods: Forty-four patients and 13 healthy subjects (112 lower limbs), with a mean age +/- SD of 48 +/- 8 years, were evaluated by using orthogonal polarization spectral (OPS) imaging.