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Sobczak A, Kowalik A, Homa M, Turalska P, Kwinta P. Changes in umbilical catheters' microstructure in vivo: A prospective study. J Vasc Access 2024; 25:158-164. [PMID: 35674147 DOI: 10.1177/11297298221100441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Umbilical vessels present after birth allow a unique central access for both venous and arterial catheterization, yet the catheterization complications can be misdiagnosed as the complications of prematurity per se. METHODS A prospective observational study of 41 used polyurethane umbilical catheters, both venous and arterial was conducted in a tertiary neonatal intensive care unit. The study consisted of bedside ultrasound imaging and post-removal microbiological and microstructural analysis to assess the in vivo catheters' changes and their clinical significance. RESULTS The study has shown that catheters' surface thrombosis and bacterial colonization happen more often within umbilical venous than within arterial catheters (31% vs 8% in both cases) and are inversely proportional to the patient's gestational age (thrombosis: Me: 28 weeks vs no thrombosis: 32 weeks; p = 0.05, bacterial colonization: 27 weeks vs no colonization: 30 weeks; p = 0.013), respectively. The clots formed near the catheter's tip are correlated with catheter's bacterial colonization. Chemical analysis with energy dispersive spectroscopy showed a higher calcium composition in used catheters (19.89% vs 0%, p = 0.016) and structure analysis in the scanning electron microscopy proved that within hours catheters become covered with an external coating of a constant thickness, not affected by the catheterization time. CONCLUSION The following observations give a better insight to the complex in vivo interactions and call for a more intense bedside-monitoring of the indwelling devices.
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Affiliation(s)
- Alina Sobczak
- Department of Pediatrics, Jagiellonian University Medical College, Kraków, Poland
| | - Aleksandra Kowalik
- Department of Pediatrics, Jagiellonian University Medical College, Kraków, Poland
| | - Marta Homa
- Center for High Temperature Studies, Foundry Research Institute, Kraków, Poland
| | - Patrycja Turalska
- Center for High Temperature Studies, Foundry Research Institute, Kraków, Poland
| | - Przemko Kwinta
- Department of Pediatrics, Jagiellonian University Medical College, Kraków, Poland
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Chen JW, Hsu CC, Su CC, Hsu RB, Chiu YL, Chia JS, Jung CJ. Transient bacteremia promotes catheter-related central venous thrombosis through neutrophil extracellular traps. Thromb Haemost 2021; 122:1198-1208. [PMID: 34768303 DOI: 10.1055/a-1695-8612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Formation of intravenous catheter-related thrombosis leads to central venous stenosis in patients requiring renal replacement therapy or chemotherapy infusion, yet the triggering or mechanisms remain unclear, especially in patients without symptoms of infection. In this study, we found that neutrophil extracellular traps (NETs) could be detected in the fibrin sheaths from dialysis patients without clinical manifestations of infection. Confocal microscopy revealed bacteria imbedded in NETs in the fibrin sheaths. Thirty-nine of 50 (78%) fibrin sheath specimens contained bacteria detectable by 16S ribosomal RNA genome typing with a predominance of Staphylococcus aureus (69%). In rat models, transient bacteremia of S. aureus induced NETs in enlarged fibrin sheaths, and treatment with DNase I alone significantly reduced both NET and fibrin sheath formation surrounding the catheter. Therefore, transient bacteremia could be a silent trigger that induces NET-related immunothrombosis enhancing catheter-related central venous stenosis.
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Affiliation(s)
- Jeng-Wei Chen
- National Taiwan University Hospital, Department of Surgery, National Taiwan University College of Medicine, Taipei, Taiwan.,Graduate institute of clinical medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chih-Chieh Hsu
- School of Dentistry, Graduate Institute of Oral Biology, National Taiwan University, Taipei, Taiwan
| | - Chien-Chia Su
- National Taiwan University Hospital, Department of ophthalmology, National Taiwan University College of Medicine, Taipei, Taiwan.,Graduate institute of clinical medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ron-Bin Hsu
- National Taiwan University Hospital, Department of Surgery, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yen-Ling Chiu
- Graduate institute of clinical medicine, National Taiwan University College of Medicine, Taipei, Taiwan.,Department of Medicine, Division of Nephrology, Far Eastern Memorial Hospital, New Taipei City, Taiwan.,College of Informatics, Department of Computer Science and Engineering, Graduate Program in Biomedical Informatics, Yuan Ze University, Chung-Li, Taiwan
| | - Jean-San Chia
- Graduate institute of clinical medicine, National Taiwan University College of Medicine, Taipei, Taiwan.,Graduate Institute of Microbiology, National Taiwan University College of Medicine, Taipei, Taiwan.,School of Dentistry, Graduate Institute of Clinical Dentistry, National Taiwan University, Taipei, Taiwan
| | - Chiau-Jing Jung
- College of Medicine, School of Medicine, Department of Microbiology and Immunology, Taipei Medical University, Taipei, Taiwan
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Kingsmore DB, Stevenson KS, Jackson A, Desai SS, Thompson P, Karydis N, Franchin M, White B, Tozzi M, Isaak A. Arteriovenous Access Graft Infection: Standards of Reporting and Implications for Comparative Data Analysis. Ann Vasc Surg 2020; 63:391-398. [DOI: 10.1016/j.avsg.2019.08.081] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 08/14/2019] [Accepted: 08/14/2019] [Indexed: 11/28/2022]
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4
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Kumbar L, Yee J. Current Concepts in Hemodialysis Vascular Access Infections. Adv Chronic Kidney Dis 2019; 26:16-22. [PMID: 30876612 DOI: 10.1053/j.ackd.2018.10.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 10/24/2018] [Accepted: 10/26/2018] [Indexed: 01/15/2023]
Abstract
Infection-related causes are second only to cardiovascular events for mortality among end-stage renal disease patients. This review will provide an overview of hemodialysis catheter-, graft-, and fistula-related infections with emphasis on diagnosis and management in specific settings. Use of catheters at the initiation of dialysis has remained unchanged at 80%. Of all access-related bloodstream infections (BSIs), 70% occur in patients with catheters. The risk factors for BSIs in tunneled, cuffed catheters include the duration of the catheter, past catheter-related bacteremia, left-sided internal jugular vein catheters, hypoalbuminemia, and immunosuppression. Surprisingly, human immunodeficiency virus infection has not been associated with a higher risk of catheter-related bacteremia. Catheter-related bloodstream infection is a clinical definition that requires specific laboratory testing to identify the catheter as the source of the BSI. A central line-associated bloodstream infection is a primary BSI in a patient who had a catheter within the 48-h period before the development of the BSI with no other identifiable source. Guidewire exchange of catheter is a viable alternative in select patients to aid in preserving venous access sites. Catheter lock therapy can decrease infectious complications and mortality. Arteriovenous graft infections are prevalent with significant morbidity. Studies evaluating the impact of stent use in infection risks of the arteriovenous graft are sorely needed.
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Achinger SG, Ayus JC. When the source of inflammation is hiding in plain sight: Failed kidney transplants, clotted arteriovenous grafts, and central venous catheters. Semin Dial 2018; 32:15-21. [PMID: 30032484 DOI: 10.1111/sdi.12739] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Cardiovascular mortality accounts for most deaths among hemodialysis patients and far exceeds the cardiovascular mortality rate of the general population. One important aspect of cardiovascular risk among dialysis patients is chronic inflammation. Iatrogenic sources of chronic inflammation in the form of failed renal allografts, old clotted arteriovenous grafts, and hemodialysis catheters play important, sometimes, unrecognized roles in this inflammatory state. There is ample observational evidence that these sources of inflammation are associated with hypoalbuminemia, erythropoetin-resistant anemia, and increased markers of chronic inflammation. In dialysis patients with chronic inflammation from potentially modifiable sources, causes should be sought and correction undertaken if possible. Allograft nephrectomy should be offered to patients with a chronic inflammatory state and a failed renal transplant. Unused, clotted AV grafts should be considered a likely source of chronic inflammation as well as infection and should be removed when evidence of infection is present on indium scanning. Catheter rates ought to be kept to a minimum for the many well-recognized reasons for their undesirability as well as for their potential to produce chronic inflammation with all of its ill effects.
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Affiliation(s)
| | - Juan Carlos Ayus
- Renal Consultants of Houston, Houston, TX, USA.,Department of Medicine, Division of Nephrology, University of California, Irvine, CA, USA
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Quaretti P, Leati G, Moramarco LP, Cionfoli N, Corti R, Tinelli C, Fiorina I, Galli F. Percutaneous Transanastomotic Stent Graft Deployment to Salvage Dysfunctional Native Forearm Radiocephalic Fistulae: Feasibility and Primary Patency at 12 Months. J Vasc Interv Radiol 2018; 29:986-992. [DOI: 10.1016/j.jvir.2018.02.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 02/18/2018] [Accepted: 02/25/2018] [Indexed: 10/16/2022] Open
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7
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Corti R, Quaretti P, Galli F, Moramarco LP, Cionfoli N, Leati G, Corbetta R, Tozzi M. New therapeutic options provided by off-label deployment of stent graft for tailored arteriovenous access salvage: Two cases. SAGE Open Med Case Rep 2017; 5:2050313X17741827. [PMID: 29163957 PMCID: PMC5692143 DOI: 10.1177/2050313x17741827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 10/17/2017] [Indexed: 11/20/2022] Open
Abstract
A tailored therapy to patient requirements by combining endovascular and surgical steps can be necessary to prolong the life of a vascular access. Stent grafts play a growing role for the therapy of dialytic access complications. Randomized multi-center trials, however, support the on-label use of stent grafts in the treatment of graft venous outflow and in-stent restenosis. The main contraindication to their use is an ongoing infection. We report two cases of new off-label application of Viabahn (Gore, flagstaff, USA) stent graft. In the first case, the failure of a radiocephalic early cannulation graft was treated by stent graft placement on the arterial inflow anastomosis, when emergent angiographic examination revealed the previously unknown high takeoff of the radial artery from the axillary artery. At 13-month follow-up, the target lesion remained untreated. In the second case, elbow stent graft occlusion with extended thrombosis occurred in a right radiocephalic fistula after 3 years of unassisted patency. Being the last option for vascular access, successful endovascular recanalization was carried out. After 3 months, however, the clinical setting relapsed. A two-stage hybrid strategy with vascular surgeon was arranged due to ongoing signs of local infection. Flow was restored by emergent thromboaspiration associated with a new stent graft placement as a endovascular bridge to subsequent surgical treatment. After 2 days, the overlapped stent grafts were excised as planned. Surgical rerouting was completed by polytetrafluoroethylene prosthetic bridge implantation across the elbow. At 4 months, the follow-up remained uneventful. In selected instances, the off-label use of stent grafts may expand the therapeutic options of the vascular access team.
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Affiliation(s)
- Riccardo Corti
- Unit of Interventional Radiology, Department of Radiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Pietro Quaretti
- Unit of Interventional Radiology, Department of Radiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Franco Galli
- Nephrology and Dialysis, IRCCS Fondazione Salvatore Maugeri, Pavia, Italy
| | - Lorenzo Paolo Moramarco
- Unit of Interventional Radiology, Department of Radiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Nicola Cionfoli
- Unit of Interventional Radiology, Department of Radiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Giovanni Leati
- Unit of Interventional Radiology, Department of Radiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Riccardo Corbetta
- Vascular Surgery Department, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Matteo Tozzi
- Vascular Surgery Department, Center For Research on Organ Transplantation, University of Insubria, Varese, Italy
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