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1.
J Gen Intern Med ; 38(5): 1272-1281, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36650323

RESUMO

BACKGROUND: Blood pressure variability (BPV) is a risk factor for poor prognosis including cardiovascular events, chronic kidney disease, and mortality, independent of elevated BP. METHODS: We searched PubMed/Medline, EMBASE, and the Cochrane Central Register of Controlled Trials (CENTRAL) from inception to November 23, 2022. Cohort studies reporting the association between BPV and chronic kidney disease (CKD) progression were selected. Hazard ratios were pooled using a random-effects model. Meta-regression, subgroup analyses, and sensitivity analyses were conducted. RESULTS: A total of 23 studies were included in this systematic review and meta-analysis. Increased BPV was associated with progression of CKD (HR: 1.21, 95% CI: 1.09-1.33) and incidence of ESRD (HR: 1.08, 95% CI: 1.08-1.30). Among the different BPV metrics, high variation independent of mean (VIM), coefficient of variation (CV), standard deviation (SD), and average real variability (ARV) were indicated as predictors of CKD progression. DISCUSSION: Increased BPV was associated with CKD progression.


Assuntos
Falência Renal Crônica , Insuficiência Renal Crônica , Humanos , Pressão Sanguínea , Insuficiência Renal Crônica/diagnóstico , Insuficiência Renal Crônica/epidemiologia , Insuficiência Renal Crônica/complicações , Fatores de Risco , Estudos de Coortes , Monitorização Ambulatorial da Pressão Arterial , Progressão da Doença , Falência Renal Crônica/epidemiologia
2.
Sichuan Da Xue Xue Bao Yi Xue Ban ; 54(6): 1283-1287, 2023 Nov 20.
Artigo em Zh | MEDLINE | ID: mdl-38162080

RESUMO

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, in situ replacement and replacement through a fibrin sheath crevice, with both being assisted by balloon dilation, and to explore the optimal catheter replacement process. Methods: A retrospective study was conducted with 52 patients who underwent a replacement of their TCCs. Among them, 27 cases had their TCC replaced by the modified method of replacement through a fibrin sheath crevice and were referred to as the sheath crevice group, while 25 cases underwent in situ catheter replacement and were referred to as the in situ group. The primary outcome indicators included maximum blood flow in hemodialysis catheter and the urea clearance rate calculated by Kt/V values at the 1, 3, and 6-month follow-ups. The secondary outcomes included dialyzer alarms being set off and catheter-related infections during follow-up. Results: There was no significant difference between the general data of the two groups. There was no massive blood loss during the replacement procedure. Neither were there cardiac tamponade, catheter-associated infections, or other complications. Follow-ups were made 1, 3, and 6 months after the replacement procedure. The sheath crevice group had higher catheter blood flow and Kt/V values at the 6-month follow-up than the in situ group did ([241.85±9.62] mL/min vs. [234.40±11.21] mL/min, P=0.014 and 1.31±0.55 vs. 1.27±0.49, P=0.005, respectively). During the follow-up process, access alarms were reported in 5 patients (three in the in situ group and two in the sheath crevice group) during dialysis. No catheter-associated infection occurred in either group. Conclusion: The catheter replacement method of balloon dilation-assisted catheter insertion through a fibrin sheath crevice is safe and effective, resulting in better long-term catheter blood flow compared with that of in situ catheter replacement.


Assuntos
Cateterismo Venoso Central , Humanos , Idoso , Estudos Retrospectivos , Fibrina , Diálise Renal , Cateteres de Demora
3.
Am J Kidney Dis ; 78(1): 19-27.e1, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-33418016

RESUMO

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. SETTINGS & PARTICIPANTS: A total of 161 hemodialysis patients with fistula dysfunction from 10 centers in China. INTERVENTION: Participants were randomized 1:1 to treatment with initial dilation followed by DCB angioplasty or conventional high-pressure balloon (HPB) angioplasty. OUTCOMES: The primary end point was target lesion primary patency defined as the target lesion intervention-free survival in conjunction with an ultrasonography-measured peak systolic velocity ratio (PSVR) ≤2.0 at 6 months. The secondary end points included 1) device, technical, clinical, and procedural success; 2) major adverse events; 3) degree of target lesion stenosis at 6 months; and 4) clinically driven target lesion and target shunt revascularization within 12 months. RESULTS: The percentage with target lesion primary patency as defined by a PSVR ≤2.0 was higher in the DCB group than in the control group (65% vs 37%, respectively; rate difference, 28% [95% CI, 13%-43%]; P <0.001) at 6 months. The target lesion and target shunt intervention-free survival of the DCB group were not superior to those of the control group at 6 months (P = 0.3 and P = 0.2, respectively) but were superior at 12 months (target lesion intervention-free survival: 73% for DCB vs 58% for control [P = 0.04]; target shunt intervention-free survival: 73% for DCB vs 57% for control [P = 0.04]). The average degree of target lesion stenoses at 6 months was not significantly different between the 2 groups (44% ± 16% for DCB vs 49% ± 18% for control; P = 0.09). There were no significant differences in major adverse events or in device, technical, clinical, or procedural success rates between the groups. LIMITATIONS: Small sample size; short follow-up period; procedural differences between the 2 groups such as unequal inflation times and balloon lengths. CONCLUSIONS: Compared to conventional HPB angioplasty, DCB treatment achieved superior primary patency defined using PSVR measured at 6 months and superior intervention-free survival of both the target lesion and the target shunt at 12 months without evidence of greater adverse events. FUNDING: Funded by ZhuHai Cardionovum Medical Device Co., Ltd. TRIAL REGISTRATION: Registered at ClinicalTrials.gov with study number NCT02962141.


Assuntos
Angioplastia com Balão , Derivação Arteriovenosa Cirúrgica , Materiais Revestidos Biocompatíveis , Paclitaxel/administração & dosagem , Complicações Pós-Operatórias/terapia , Diálise Renal , Grau de Desobstrução Vascular , Adulto , Idoso , Derivação Arteriovenosa Cirúrgica/efeitos adversos , Constrição Patológica/terapia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Resultado do Tratamento
4.
Blood Purif ; 50(3): 298-308, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33291108

RESUMO

BACKGROUND: Heart rate variability (HRV) means the variation in time of beat-to-beat interval. Lower HRV has been shown to be related with death and cardiovascular events in previous studies. In the last few years, the number of patients with ESRD has increased steadily. Maintenance hemodialysis is the most prevalent renal replacement therapy in patients with ESRD. This study aims to investigate if decreased HRV is an independent predictor of mortality in maintenance hemodialysis patients. METHODS: Pubmed/Medline, EMBASE, Ovid, the Web of Science, and the Cochrane Central Register of Controlled Trials databases were searched up to October 1, 2019, for full-text articles in English. Cohort studies reporting the association between HRV and prognosis in hemodialysis patients were selected. Data extraction was performed by 2 reviewers independently, with adjudication by a third reviewer. Extracted data included the study characteristics, HRV measurement and research outcomes. Hazard ratios (HRs) and 95% confidence interval (CI) were pooled in a random-effects model for outcomes of all-cause and cardiovascular mortality. Heterogeneity assessment, subgroup analyses, and sensitivity analysis were conducted. RESULTS: A total of 7 studies were eligible. HRV metrics consist of SDNN, SDANN, RMSSD, pNN50, HRVTI, ULF, VLF, LF, HF, LF/HF ratio, HRT, DC, and scaling exponents α1 and α2. Decreased HRV was associated with higher all-cause mortality (HR: 1.63, 95% CI: 1.11-2.39, p = 0.014) and cardiovascular mortality (HR: 1.07, 95% CI: 1.00-1.15, p = 0.045). Among the different HRV metrics, decreased SDANN (p < 0.001) and decreased LF/HF ratio (p = 0.001) were identified as predictors of all-cause death. Decreased SDNN, SDANN, and LF/HF ratio were identified as predictors of cardiovascular death (p = 0.004, p = 0.001, and p = 0.002). CONCLUSIONS: Decreased HRV is associated with higher risk of all-cause and cardiovascular death in the hemodialysis population. Decreased SDANN and LF/HF were identified as predictors of both all-cause and cardiovascular mortality, while the utility of other HRV metrics requires further investigation. The protocol for this study was registered with PROSPERO (CRD42019141886).


Assuntos
Frequência Cardíaca , Diálise Renal , Doenças Cardiovasculares/mortalidade , Fatores de Risco de Doenças Cardíacas , Humanos , Prognóstico , Diálise Renal/efeitos adversos , Diálise Renal/métodos , Medição de Risco
5.
J Vasc Surg ; 68(5): 1491-1498, 2018 11.
Artigo em Inglês | MEDLINE | ID: mdl-29804743

RESUMO

OBJECTIVES: Catheter-related right atrial thrombosis (CRAT) is an underreported but potentially life-threatening complication associated with the use of tunneled-cuffed catheters among hemodialysis (HD) patients. Because little is known about the evidence-based guidelines for the optimal management of CRAT among HD patients, this article reports findings based on 20 patients diagnosed with CRAT after catheter replacement and anticoagulation treatment. METHODS: The article retrospectively reviews the hospital records of 20 HD patients treated in the West China Hospital with diagnosis of CRAT from March 2013 to May 2016. Once CRAT was diagnosed, tunneled-cuffed catheters were exchanged over a guidewire in situ and the locations of the new catheter tips were adjusted to be away from the original sites. Immediately after the insertion of a new tunneled-cuffed catheter and at the end of each HD session, both ports of the catheters were locked with unfractionated heparin solution. Patients younger than 70 years of age were treated with warfarin at a target International Normalized Ratio of 1.5 to 1.9, whereas those older than 70 years were treated with dual antiplatelet therapy. All patients were on regular dialysis without thrombolysis or thrombectomy. RESULTS: During the follow-up, two patients died of gastrointestinal massive hemorrhage and one died of acute myocardial infarction. No fatal pulmonary embolism or other CRAT complication-related deaths were observed. A total of eight patients had complete dissolution of CRAT, and 12 patients had reduction in thrombi size. CONCLUSIONS: Maintenance of HD by replacing catheters and providing oral anticoagulation/antiplatelet therapies may be an effective strategy for treating HD patients with CRAT.


Assuntos
Anticoagulantes/administração & dosagem , Cateterismo Venoso Central/efeitos adversos , Cateteres de Demora/efeitos adversos , Cateteres Venosos Centrais/efeitos adversos , Remoção de Dispositivo , Cardiopatias/terapia , Inibidores da Agregação Plaquetária/administração & dosagem , Diálise Renal , Trombose/terapia , Varfarina/administração & dosagem , Administração Oral , Adulto , Idoso , Idoso de 80 Anos ou mais , Anticoagulantes/efeitos adversos , Cateterismo Venoso Central/instrumentação , China , Feminino , Átrios do Coração/diagnóstico por imagem , Cardiopatias/diagnóstico por imagem , Cardiopatias/etiologia , Humanos , Masculino , Pessoa de Meia-Idade , Inibidores da Agregação Plaquetária/efeitos adversos , Estudos Retrospectivos , Fatores de Risco , Trombose/diagnóstico por imagem , Trombose/etiologia , Fatores de Tempo , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Varfarina/efeitos adversos
6.
Blood Purif ; 43(4): 321-326, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28135701

RESUMO

BACKGROUND: As of now, only a few studies have focused on the failure of tunneled cuffed venous catheter (tCVC) and mortality of hemodialysis (HD) patients using tCVC as long-term vascular access, whose vascular condition for arteriovenous fistula was not very satisfactory. In this study, we aimed to provide information about the first tCVC failure and survival rates of patients in this population. METHODS: Fifty-nine patients who used tCVC from January 1, 2009 to December 31, 2014 in our HD center were analyzed in this retrospective study and followed up either until their death or until December 31, 2015. The first tCVC and patient survival rates were analyzed. RESULTS: The incidence of catheter-related infections was 0.3 per 1,000 patient-days. The median survival duration of first tCVC was 45.0 (95% CI 29.3-69.7) months and the median survival time of all patients was 56.3 (95% CI 34.1-78.5) months by Kaplan-Meier analysis. Advanced age (hazard ratio [HR] 1.055, p < 0.05) and diabetic mellitus (HR 4.147, p < 0.05) at the initiation of HD were significant risk factors of first tCVC failure, while male (HR 2.712, p < 0.05) and cardiovascular diseases (CVDs; HR 4.139, p < 0.05) were significant risk factors for patient mortality as deduced by Cox proportional hazards methods. CONCLUSIONS: The study highlighted that first tCVC survival rates and patient survival rates were high in HD patients who were using tCVCs as long-term vascular access, with low incidence of catheter-related infections. In the study it was found that advanced age and diabetic mellitus at the initiation of HD influenced first tCVC failure, whereas male and CVDs seemed to be risk factors for patient mortality.


Assuntos
Cateterismo Venoso Central , Cateteres Venosos Centrais , Falha de Equipamento , Mortalidade , Diálise Renal , Injúria Renal Aguda/mortalidade , Injúria Renal Aguda/terapia , Idoso , Idoso de 80 Anos ou mais , Infecções Relacionadas a Cateter/diagnóstico , Infecções Relacionadas a Cateter/epidemiologia , Infecções Relacionadas a Cateter/etiologia , Cateterismo Venoso Central/efeitos adversos , Cateterismo Venoso Central/métodos , Cateteres Venosos Centrais/efeitos adversos , Comorbidade , Feminino , Seguimentos , Humanos , Incidência , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Modelos de Riscos Proporcionais , Diálise Renal/efeitos adversos , Diálise Renal/métodos , Estudos Retrospectivos
8.
Blood Purif ; 40(1): 79-83, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26138408

RESUMO

PURPOSE: To establish a new way for long-term vascular access for dialysis patient with vascular access exhaustion. MATERIALS AND METHODS: A patient with diabetes was found with edema of right arm and high venous pressure of AVF during hemodialysis. Intervention operations were performed to establish a tunneled cuffed catheterization. RESULTS: Occlusion of innominate vein was confirmed by MDCTV. Puncture to superior vena cava was successful 0.5 cm below the lateral head of sternocleidomastoid muscle directly via the right neck area. CONCLUSION: Direct puncture via superior vena cava might be the last choice for catheter insertion site. choice for catheter insertion site.


Assuntos
Cateteres de Demora , Veia Cava Superior , Idoso , Angiografia , Fístula Arteriovenosa/diagnóstico , Fístula Arteriovenosa/etiologia , Humanos , Falência Renal Crônica/etiologia , Falência Renal Crônica/terapia , Masculino , Diálise Renal/métodos
9.
J Vasc Surg ; 69(1): 312, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-30579455
10.
BMC Nephrol ; 15: 142, 2014 Sep 02.
Artigo em Inglês | MEDLINE | ID: mdl-25182190

RESUMO

BACKGROUND: MicroRNAs have been demonstrated to play an important role in the pathogenesis of diabetic nephropathy (DN). In this study, we investigated both the repertoire of miRNAs in the kidneys of patients with DN and their potential regulatory role in inflammation-mediated glomerular endothelial injury. METHODS: The miRNA expression profiling of the renal biopsy samples was performed by a microarray analysis; then, in situ hybridization and real-time polymerase chain reaction (PCR) were used to determine the localization and expression of two of the miRNAs significantly up-regulated in human DN kidney samples, miR-155 and miR-146a, in the kidney tissues from type 1 and type 2 DN rat models. Human renal glomerular endothelial cells (HRGECs) cultured under high-glucose conditions were transfected with miR-155 and miR-146a mimics, and the transforming growth factor (TGF)-ß1, tumor necrosis factor (TNF)-α, and nuclear factor (NF)-κB expressions were examined by western blot, real-time PCR, and an electrophoresis mobility shift assay. RESULTS: The expression of both miR-155 and miR-146a was increased more than fivefold in the kidney samples of the DN patients compared with the controls, and the miR-155 expression was closely correlated with the serum creatinine levels (R = 0.95, P = 0.004). During the induction and progression of the disease in type 1 and type 2 DN rat models, miR-155 and miR-146a were demonstrated to increase gradually. In vitro, high glucose induced the over-expression of miR-155 and miR-146a in the HRGECs, which, in turn, increased the TNF-α, TGF-ß1, and NF-κB expression. CONCLUSIONS: Taken together, these findings indicate that the increased expression of miR-155 and miR-146a in the DN patients and in the experimental DN animal models was found to contribute to inflammation-mediated glomerular endothelial injury.


Assuntos
Nefropatias Diabéticas/metabolismo , Endotélio Vascular/metabolismo , Mediadores da Inflamação/metabolismo , Glomérulos Renais/metabolismo , MicroRNAs/metabolismo , Adulto , Animais , Células Cultivadas , Nefropatias Diabéticas/patologia , Endotélio Vascular/patologia , Feminino , Humanos , Glomérulos Renais/patologia , Masculino , Pessoa de Meia-Idade , Ratos , Ratos Sprague-Dawley
11.
Sichuan Da Xue Xue Bao Yi Xue Ban ; 45(3): 414-8, 2014 May.
Artigo em Zh | MEDLINE | ID: mdl-24941808

RESUMO

OBJECTIVE: To establish a goat model of melittin induced acute kidney injury (AKI), and to evaluate the therapeutic effect of continuous veno-venus heamofiltration (CVVH) in melittin- induced AKI. METHODS: Twelve male goats were randomized into three groups: control group, melittin induced AKI group (melittin group), and CVVH intervention group (CVVH group). The AKI goat model was established by the injection of melittin via the auricular vein for four times in 48 h to reach a total dose of 0.5 mg/kg, then serum creatinine (Cr) and creatine kinase (CK) were tested every 6 h and urine output was record each hour. AKI was diagnosed when Cr level increased to the double value of control group, or the urine output decreased to less than 0. 5 mL/(kg x h) in 6 h. After the diagnosis of AKI, the animals in CVVH group received CVVH treatment for 12 h. At the end, the goats in all groups were sacrificed by anesthesia and kidney tissue samples were collected. Light microscopy and telectron microscopy observation were performed. Apoptosis was detected by immunohistochemistry and TUNEL technique. RESULTS: AKI was successfully induced by melittin in the goats. The Cr level in control group was (43.95 +/- 1.59) micromol/L, while (100.75 +/- 7.87) micromol/L in AKI group and (102.10 +/- 5.06) micromol/L in CVVH group. Cr level was lowered significantly after CVVH treatment [(45.02 +/- 2.41) micromol/L in control group vs. (108.60 +/- 9.40) micromol/L in AKI group vs. (64.13 +/- 5.82) micromol/L in CVVH group, P < 0.001]. Swelling and reduction of mitochondrial crests in AKI group were more obvious than those in CVVH group. Expression of caspase-3 and apoptosis cells percentage of renal tubules in AKI group were significantly higher than those in CVVH group. CONCLUSION: Melittin induced AKI model could be established in goats. CVVH could alleviate melittin induced AKI, probably in the mechanism to reduce the apoptosis of renal tubular cells.


Assuntos
Injúria Renal Aguda/terapia , Meliteno/efeitos adversos , Terapia de Substituição Renal , Injúria Renal Aguda/induzido quimicamente , Animais , Apoptose , Modelos Animais de Doenças , Cabras , Rim/efeitos dos fármacos , Rim/fisiopatologia , Testes de Função Renal , Masculino
12.
J Vasc Surg Venous Lymphat Disord ; 12(1): 101682, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37708936

RESUMO

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. Demographic and clinical data were compared. Hypotension simply refers to blood pressure levels of <90/60 mm Hg on a nondialysis day. All patients received endovascular intervention. RESULTS: Hypotension was found in 85 of the 194 patients. The following factors were significantly different between the hypotension and nonhypotension groups: body mass index, history of hypertension, tunneled-cuffed catheter as the means of dialysis access, azygos ectasis, SVC stenosis of >70% or occlusion, occlusion at the cavitary junction, serum calcium, diastolic left ventricular (LV) posterior wall thickness, LV end-diastolic volume, stroke output, and LV ejection fraction. Multivariate logistic regression analysis showed that hypertension history (OR, 0.314; P = .027), tunneled-cuffed catheter as vascular access (OR, 3.997; P < .001), SVC stenosis of >70% or occlusion (OR, 5.243; P < .001), LV posterior wall thickness (OR, 0.772; P = .044), and serum calcium (OR, 0.146; P = .005) were independent risk factors for hypotension. The mean values of systolic and diastolic blood pressure after intravascular treatment were significantly elevated from those before intervention (P < .001). The primary patency rates of SVC were 66.8%, 58.7%, and 50.0% at 3, 6, and 12 months after the procedure. CONCLUSIONS: The incidence of hypotension in patients with hemodialysis-associated SVCS is high. The identification of risk factors of hemodialysis-related hypotension provides insight into potential treatment strategies. Endovascular treatment is expected to improve hypotension related to SVCS in hemodialysis patients.


Assuntos
Hipertensão , Hipotensão , Síndrome da Veia Cava Superior , Humanos , Síndrome da Veia Cava Superior/diagnóstico por imagem , Síndrome da Veia Cava Superior/etiologia , Síndrome da Veia Cava Superior/terapia , Constrição Patológica/complicações , Estudos Retrospectivos , Cálcio , Diálise Renal/efeitos adversos , Fatores de Risco , Hipotensão/complicações , Hipertensão/complicações , Resultado do Tratamento
13.
J Vasc Access ; : 11297298231223108, 2024 Jan 10.
Artigo em Inglês | MEDLINE | ID: mdl-38197201

RESUMO

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. Percutaneous transluminal angioplasty and a TCC replacement based on a segment-by-segment recanalizing strategy were performed. First, an 8-Fr sheath was inserted through the left femoral vein approach to retrogradely traverse the occlusive SVC followed by a guidewire extending to the occlusive left IV. A left transjugular 15-cm snare was inserted to capture the transfemoral guidewire and achieve recanalization from the left IV to the SVC. Second, a transjugular guidewire was advanced through the dysfunctional TCC yet shunted into the left IV due to the inability to cross the SVC. A left transfemoral 15-cm snare was inserted to capture the guidewire and achieve complete recanalization from the right internal jugular vein to the SVC. Balloons were passed over the guidewires to dilate the obstructive lesions sequentially, and a new TCC was inserted successfully with the tip positioned in the right atrium.

14.
J Vasc Access ; : 11297298231224092, 2024 Jan 12.
Artigo em Inglês | MEDLINE | ID: mdl-38217318

RESUMO

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. METHODS: A retrospective review of 19 patients with TCC loss was conducted from January 2020 to August 2022. These patients underwent reinsertion through the same exit site and subcutaneous existing tunnel. Procedure-related complications and clinical follow-up data were collected. RESULTS: All 19 patients with catheter loss underwent this procedure and the median duration of catheter loss was 14 days (5-57 days). Five of them had central venous occlusion, and four of them experienced catheter loss due to removal for catheter-related bloodstream infections (CRBI). In the end, 18 case received successful catheterization using this technique. The most common complication was minimal bleeding after the operation. There were no procedure-related deaths or serious complications. The average blood flow was 265.79 ± 25.89 ml/min at the end of the follow-up period. CONCLUSION: This maneuver is a safe and convenient technique that can be used to reinsert a TCC for patients with long-time catheter loss. It helps to preserve the limited central venous resources for patients who have difficulty establishing other stable vascular access.

15.
Heliyon ; 10(1): e23621, 2024 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-38173496

RESUMO

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. The potential role of vascular calcification as a risk factor to stent migration was discussed. Patients with severe vascular calcification receiving endovascular angioplasty might need a careful risk screening for stent migration.

16.
Artif Organs ; 37(8): E155-61, 2013 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-23634689

RESUMO

The aim of this study was to explore the risk factors of tunneled-cuffed catheter (TCC)-related central venous thrombosis (CVT) for the maintenance of hemodialysis patients. In this study, 285 patients on maintenance hemodialysis were enrolled who had received their first TCC in the right jugular vein. Patients were divided into CVT and control groups according to the diagnosis of TCC-related CVT 6 months after catheterization. Patients with CVT had a higher prevalence of dyslipidemia (50.74 vs. 26.85%, respectively) and low protein store compared with the control group. After adjusting for confounders, serum triglycerides (OR: 3.632; 95% CI: 2.105-6.267), non-HDL cholesterol (OR: 1.463; 95% CI:1.067-2.007), and low-density lipoprotein/high-density lipoprotein (LDL/HDL) cholesterol ratio (OR: 2.904; 95% CI: 1.797-4.692) were positively correlated with TCC-related CVT, while serum HDL cholesterol (OR: 0.097; 95% CI: 0.037-0.257) and serum albumin (OR: 0.922; 95% CI: 0.864-0.985) were negatively correlated. Dyslipidemia and low serum albumin levels were significantly associated with TCC-related CVT in hemodialysis patients.


Assuntos
Cateterismo Venoso Central/efeitos adversos , Dislipidemias/sangue , Dislipidemias/etiologia , Trombose Venosa/complicações , Idoso , Estudos de Casos e Controles , Cateteres de Demora/efeitos adversos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Diálise Renal , Fatores de Risco , Albumina Sérica/análise
18.
J Vasc Surg Venous Lymphat Disord ; 11(2): 318-325, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36179787

RESUMO

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. The patients were followed up until May 2021. The demographic information, complications, and catheter patency were analyzed. RESULTS: A total of 205 patients (105 women [51.2%]; mean age, 61 ± 15 years) were included. The SVC puncture and tCVC insertion were successfully performed in 194 patients, for a technical success rate of 94.6%. One patient had experienced a pleura injury and hemothorax and had required urgent thoracotomy. A total of 37 patients had presented with mild chest pain and were prescribed oral nonsteroidal anti-inflammatory drugs. During follow-up of the 194 patients with a successful procedure, catheter dysfunction due to thrombosis had occurred in 66 patients, catheter malposition had occurred in 5 patients, and catheter-related blood stream infection had developed in 6 patients. The 3-year primary patency rate was 64.2%, and the 3-year secondary patency rate was 76.3%. CONCLUSIONS: A tCVC placed through a percutaneous SVC puncture had a satisfactory technical success rate and long-term patency rate in patients requiring hemodialysis, providing an optional vascular access for those with exhausted central vein resources. SVC puncture also avoided the use of left-sided catheters and preserved central vein resources. Caution should be given to avoid potential complications such as pleura injury and hemothorax.


Assuntos
Cateteres Venosos Centrais , Veia Cava Superior , Humanos , Feminino , Pessoa de Meia-Idade , Idoso , Hemotórax , Diálise Renal , Punções
19.
Sichuan Da Xue Xue Bao Yi Xue Ban ; 43(3): 438-41, 2012 May.
Artigo em Zh | MEDLINE | ID: mdl-22812254

RESUMO

OBJECTIVE: To determine the association of diabetes and glycemic control with early failure of native arteriovenous fistula(AVF). METHODS: 266 patients with end stage renal diseases(ESRD) were recruited and divided into non-diabetic group (165), HbA1C < 7% group (51) and HbA1C > or = 7% group (50). Clinical indicators and early failure of AVF were examined. RESULTS: In total, 63 (23.7%) patients had AVF early failure. The AVF early failure occurred in 18. 1% of patients in the non-diabetic group and 21.6% of patients in the HbA1C < 7% group, significantly less than that in the HbA1C > or = 7% group (44%). The COX regression model showed that increased HbA1C, total cholesterol (TC) and decreased high-density lipoprotein (HDL)increased the risk of AVF failure. CONCLUSION: The levels of glycemic and serum lipid subfractions are associated with AVF early failure in ESRD patients. Good control of glycemic and lipid can lower the rates of AVF early failure.


Assuntos
Derivação Arteriovenosa Cirúrgica , Nefropatias Diabéticas/terapia , Hemofiltração/métodos , Falência Renal Crônica/terapia , Adulto , Idoso , Derivação Arteriovenosa Cirúrgica/efeitos adversos , Nefropatias Diabéticas/complicações , Feminino , Humanos , Falência Renal Crônica/complicações , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos
20.
Ann Palliat Med ; 11(6): 2139-2143, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35817747

RESUMO

BACKGROUND: Multiple complete central venous occlusion (CVO) is rare complication among the hemodialysis population. Percutaneous transluminal angioplasty (PTA) is the recommended treatment for CVO; however, cases with long-segment occlusion remain challenging. CASE DESCRIPTION: We reported a patient who complained of a swollen right arm for 1 month. On admission, his vital signs were within normal limits. The 76-year-old man had been on hemodialysis with a right forearm arteriovenous fistula (AVF) for 4 years with a history of temporizing catheterization and left forearm AVF failure. One year ago, he gradually developed a slight swelling in his right arm and the swelling in his arm was significantly worse one month ago. Digital subtraction angiography (DSA) revealed occlusion in his right innominate vein (IV), proximal subclavian vein (SV), and external and internal jugular veins, as well as stenosis of the ipsilateral cephalic arch and axillary vein (AV). The operation was performed with a pioneered bidirectional approach via ipsilateral superior vena cava (SVC) and AV puncture. The occluded lesions were successfully recanalized, and the patient's symptoms resolved after the operation. The patency of his vascular access was well maintained at the 4-month follow-up. CONCLUSIONS: To the best of our knowledge, this is the first report regarding the application of SVC puncture in PTA for CVO. This technique could be a possible approach when performed by appropriately qualified operators in patients with limited or no other options.


Assuntos
Veias Braquiocefálicas , Veia Cava Superior , Idoso , Veias Braquiocefálicas/diagnóstico por imagem , Veias Braquiocefálicas/patologia , Veias Braquiocefálicas/cirurgia , Humanos , Masculino , Punções , Diálise Renal , Veia Subclávia/cirurgia , Veia Cava Superior/diagnóstico por imagem , Veia Cava Superior/cirurgia
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