Arteriovenous access creation for hemodialysis patients with superior vena cava occlusion.

Background: The feasibility of creating arteriovenous (AV) access in hemodialysis patients with superior vena cava occlusion (SVCO) is debated due to impaired blood return to the right atrium. However, collateral venous networks may offer an alternative solution, allowing for the creation of peripheral AV access. This study evaluates the outcomes of AV access construction in hemodialysis patients with SVCO.

Reinsertion of tunneled-cuffed catheter in hemodialysis patients with catheter loss and limited access options.

Purpose: Maintenance hemodialysis patients who rely on tunneled-cuffed catheters (TCCs) often face difficulty in reinserting a new catheter when the original catheter has been extruded or removed. Potential pathological changes of vessel caused by long-term indwelling of a catheter may contribute to this predicament. The aim of this study was to report and evaluate a re-catheterization technique through the same exit site and tunnel for hemodialysis patients with TCC loss.

A 4-year tunneled hemodialysis catheter malpositioned into the azygos vein and how to remedy the hemodialysis circuit.

Mispositioning in the azygos vein is a rare but hazardous complication of central venous catheterization. A patient was admitted for a dysfunctional hemodialysis tunneled cuffed catheter (TCC) placed in the azygos vein for 4 years. Computed tomography angiography revealed multiple sites of occlusion, including the superior vena cava (SVC), right and left innominate veins (IVs), and right femoral vein.

Stents migration into right atrium from severely calcified superior vena cava in a hemodialysis patient.

Vascular calcification is common among hemodialysis patients. In this report, we presented a case of superior vena cava (SVC) stent migration during endovascular angioplasty in a 50-year-old female hemodialysis patient with severe SVC calcification. The stent migration was refractory to the deployment of a second anchor stent, which shortly resulted in pericardium tamponade and was successfully rescued by emergent thoracotomy.

[Catheter Replacement Methods in Hemodialysis Patients With Dysfunctional Tunneled-Cuffed Catheters With Fibrin Sheaths].

Objective: Tunneled-cuffed catheters (TCCs) are frequently used for establishing hemodialysis access for maintenance hemodialysis in older patients with exhausted resources of peripheral vessels. Fibrin sheath formation around the catheter is one of the most common complications of long-term use of indwelling catheter, which may cause the malfunction of the catheter. In this study, we intend to compare the prognosis of two catheter replacement methods, replacement and replacement through a fibrin sheath crevice, with both being assisted by balloon dilation, and to explore the optimal catheter replacement process.

Risk factors for hypotension in patients with hemodialysis-associated superior vena cava syndrome.

Objective: We analyzed the risk factors for hypotension in patients with hemodialysis-associated superior vena cava syndrome (SVCS) and effectiveness of endovascular intervention in hypotension related to SVCS.

Methods: This was a retrospective cohort study. A total of 194 maintenance hemodialysis patients diagnosed with SVCS who were admitted to the Department of Nephrology, West China Hospital of Sichuan University from January 2019 to December 2021 were selected and divided into a hypotension group and a nonhypotension group.

Percutaneous superior vena cava puncture for hemodialysis catheter placement.

Objective: Central venous occlusion (CVO) refractory to endovascular angioplasty is a critical challenge that threatens hemodialysis vascular access. In the present study, we evaluated the efficacy and safety of tunneled, cuffed central venous catheter (tCVC) placement via percutaneous superior vena cava (SVC) puncture in patients with refractory CVO.

Methods: Patients requiring maintenance hemodialysis with refractory CVO who had undergone percutaneous SVC puncture and tCVC insertion at a university-affiliated hospital from January 2016 to June 2020 were included.

Kidney health in the COVID-19 pandemic: An umbrella review of meta-analyses and systematic reviews.

Background: This umbrella review aims to consolidate evidence from systematic reviews and meta-analyses investigating the impact of the coronavirus disease-2019 (COVID-19) on kidney health, and the associations between kidney diseases and clinical outcomes in COVID-19 patients.

Methods: Five databases, namely, EMBASE, PubMed, Web of Science, the Cochrane Database of Systematic Reviews and Ovid Medline, were searched for meta-analyses and systematic reviews from January 1, 2020 to June 2, 2022. Two reviewers independently selected reviews, identified reviews for inclusion and extracted data.

The efficacy and safety of blunt impingement followed by a sharp recanalization technique in hemodialysis patients with refractory central vein occlusion: a single-center experience.

Background: Central vein occlusion (CVO) is a serious problem in hemodialysis patients. There is an unsatisfactory result for refractory CVO by sharp recanalization alone. This study evaluated the efficacy and safety of blunt impingement followed by sharp recanalization for the treatment of CVO in hemodialysis patients.

Blood Pressure Variability and Prognosis in Hemodialysis Patients: A Systematic Review and Meta-Analysis.

Background: The prognostic value of blood pressure variability (BPV) in patients receiving hemodialysis is inconclusive. In this study, we aimed to assess the association between BPV and clinical outcomes in the hemodialysis population.

Methods: Pubmed/Medline, EMBASE, Ovid, the Cochrane Library, and the Web of Science databases were searched for relevant articles published until April 1, 2020.

Sharp recanalization for long-segment superior vena cava occlusion in a hemodialysis patient with vascular resource exhaustion: a case report.

Hemodialysis is the lifeline of end-stage renal patients, and the correct choice of vascular access is vital to patients with vascular resource exhaustion. A 57-year-old female was admitted to the hospital due to catheter dysfunction. Color-doppler ultrasound (CDU) showed that the patient's inferior vena cava (IVC), right brachiocephalic vein, and long segment of the superior vena cava (SVC) were occluded.

A case report of sharp recanalization in a hemodialysis patient with severe occlusion of both superior and inferior vena cave.

We present the case of a 53-year-old woman with a history of maintenance hemodialysis through arteriovenous fistula, CUFF catheter (cuffed tunneled catheter) and artificial vascular graft successively. Some signs of superior vena cava syndrome have presented including chronic edema in the face and left arm and varicose veins. Both CT (computed tomography) and angiography showed narrowing and occlusion in multiple veins, especially the right innominate vein, superior vena cava, inferior vena cava, left jugular vein, and bilateral common iliac veins.

Efficacy and Safety of Paclitaxel-Coated Balloon Angioplasty for Dysfunctional Arteriovenous Fistulas: A Multicenter Randomized Controlled Trial.

Rationale & Objective: Previous studies have illustrated the potential superiority of drug-coated balloons (DCBs) in maintaining patency after initial angioplasty for arteriovenous fistula (AVF) dysfunction due to stenosis. Our trial evaluated the efficacy and safety of DCBs for preventing fistula restenosis in Chinese hemodialysis patients.

Study Design: Multicenter, prospective, randomized, open-label, blinded end point, controlled trial.