Observational, retrospective real-world evidence study demonstrates safety, performance and usefulness of antimicrobial central venous catheters.

OBJECTIVE: To collect real-world data to demonstrate the safety and performance of Arrowg+ard Blue® /Arrowg+ard Blue Plus® (AGB/AGB+) central venous catheters (CVCs). METHODS: This observational, retrospective study involved patients who required AGB/AGB+ CVCs at designated general hospitals in USA (22), UK (19) and Germany (2). Data were extracted from electronic medical records. There were no specific inclusion/exclusion criteria. Primary endpoint was successful treatment without an adverse event (AE). Secondary endpoint was rate of AEs. RESULTS: In total, 384 cases were included from 43 centres and most patients (74%) were >35 years of age. A success rate of 99%, and an overall AE rate of 0.8% were observed. Moreover, the overall infection rate was lower than typically reported for standard catheters. In addition, power injection of contrast media was successful in all 51 cases. CONCLUSIONS: This study indicates the AGB/AGB+ CVCs perform as intended with a high success rate and few AEs. Further large-scale, controlled studies are required to confirm our findings.

Prevalence and Predictors of Tunneled Dialysis Catheter Dysfunction.

BACKGROUND: Hemodialysis requires reliable, recurrent access to the circulatory system. Central venous tunneled dialysis catheters (TDC) are frequently used for patients receiving hemodialysis as a bridge to permanent vascular access or as a final option. TDC are prone to complications such as infection and dysfunction. OBJECTIVES: To assess the prevalence and predictors of TDC dysfunction in a cohort of chronic hemodialysis patients. METHODS: This single-center, retrospective study was based on data from an electronic database of chronic hemodialysis patients during 5 years of follow-up. RESULTS: A total of 625 TDC were inserted in 361 patients, of which 234 (37.4%) were replaced due to dysfunction. The main insertion site was the right internal jugular vein. Diabetes mellitus was an important predictor of TDC dysfunction and was significantly correlated with TDC extraction. Chronic anticoagulation and antiplatelet treatment did not affect the rate of TDC dysfunction or replacement. CONCLUSIONS: TDC use for chronic dialysis patients is increasing and dysfunction is a major problem. In our study, we highlighted the high prevalence of TDC dysfunction and the need for further research to improve hemodialysis access as well as TDC patency and function.

Central venous access device adverse events in pediatric patients with cancer: a systematic review and meta-analysis.

PURPOSE: To systematically review the proportion and incidence of CVAD-associated complications in pediatric patients with cancer. METHODS: PubMed, Embase, and the Cumulative Index of Nursing and Allied Health Literature were searched from 2012 to 2022. Cohort studies and the control arm of randomized controlled trials, which reported CVAD-associated complications in pediatric patients aged 0-18 years, were included. CVAD complications were defined as CVAD failure, central line-associated bloodstream infection (CLABSI), local infection, occlusion, CVAD-associated venous thromboembolism, dislodgement/migration, breakage/rupture, and dehiscence. The pooled proportion and incidence rate (IR) for each CVAD-associated complication were reported. RESULTS: Of 40 included studies, there was mixed quality of methods and reporting. Approximately 31.4% (95% confidence interval [CI] 22.5-41.1; 6920 devices) of devices experienced a CVAD-associated complication, and 14.8% (95% CI 10.2-20.1; 24 studies; 11,762 devices) of CVADs failed before treatment completion (incidence rate (IR) of 0.5 per 1000 catheter days (95% CI 0.3-0.8; 12 studies; 798,000 catheter days)). Overall, 21.2% (95% CI 14.3-28.9; 26 studies; 5054 devices) of CVADs developed a CLABSI, with an IR of 0.9 per 1000 catheter days (95% CI 0.6-1.3; 12 studies; 798,094 catheter days). Tunneled central venous catheters (TCVC) and peripherally inserted central catheters (PICCs) were associated with increased complications in comparison to totally implanted venous access devices (TIVADs). CONCLUSION: CVAD complication rates in this population remain high. TCVCs and PICCs are associated with increased complications relative to TIVADs. Insufficient evidence exists to guide device selection in this cohort, necessitating further research to determine the role of PICCs in pediatric cancer care. PROSPERO: CRD42022359467. Date of registration: 22 September 2022.

A haemodialysis catheter misplaced due to central venous stenosis: A case report.

Chronic kidney disease has become a significant global health issue, with some individuals progressing to endstage renal disease (ESRD) and requiring renal replacement therapy. For ESRD patients undergoing haemodialysis, the first step is to establish vascular access. In emergency situations, inserting a haemodialysis catheter (HDC) into the central vein is often the most appropriate approach; the right internal jugular vein (IJV) is considered the optimal site for catheterisation. However, catheter placement in the right IJV can sometimes lead to inadvertent entry into an abnormal position. Herein, we present a unique case in which the tip of the HDC was noted to have misplaced into the left IJV due to the patient's multiple central venous stenosis (CVS). This case highlights the clinical manifestation of HDC misplacement, with CVS being the underlying cause. Therefore, healthcare providers should pay adequate attention to CVS.

Infiltration and Extravasation Risk with Midline Catheters: A Narrative Literature Review.

Midline catheters have recently gained popularity in clinical use, with a common reason being the reduction of central venous catheter use and central line-associated bloodstream infections. At the same time, the number of nononcology vesicant medications has increased, and midline catheters are frequently being used for infusions of vesicant medications. The Infusion Nurses Society (INS) Vesicant Task Force identified midline catheter use as a possible risk factor for extravasation and concluded that a thorough literature review was necessary. This review highlights the variations in catheter terminology and tip locations, the frequency of infiltration and extravasation in published studies, and case reports of infiltration and extravasation from midline catheters. It also examines the many clinical issues requiring evidence-based decision-making for the most appropriate type of vascular access devices. After more than 30 years of clinical practice with midline catheters and what appears to be a significant number of studies, evidence is still insufficient to answer questions about infusion of vesicant and irritant medications through midline catheters. Given the absence of consensus on tip location, inadequate evidence of clinical outcomes, and importance of patient safety, the continuous infusion of vesicants, all parenteral nutrition formulas, and infusates with extremes in pH and osmolarity should be avoided through midline catheters.

Preparation of Patients for Central Venous Catheter Care in the Home: Perspectives From Health Care Personnel.

Patients managing central venous catheters (CVCs) outside of hospitals need training in CVC care. Using 3 focus groups, the study identified themes in how health care personnel (HCP) prepare patients and their caregivers for CVC care at home. Four major themes and 25 nested subthemes were identified: (1) providing the right amount of education at the right time, (2) tailoring education to patient needs, (3) developing patient education tools, and (4) managing differences in recommendations to patients. HCPs in the study ensured patients and caregivers learn what they need to know when they need to know it, using appropriate patient education tools. Patients and caregivers are largely responsible for CVC care and central line-associated bloodstream infection prevention outside of acute care hospitals and long-term care settings, and HCP take seriously their obligation to provide them with appropriate education and tools to best enhance their ability to keep themselves safe.

Non-tunneled haemodialysis catheter-related blood stream infections and associated factors among first time haemodialysis patients: a prospective study from a tertiary care hospital in Sri Lanka.

BACKGROUND: A significant number of patients require non-tunneled haemodialysis catheters (NTHCs) in the event of an urgent need for immediate haemodialysis in developing countries. Catheter-related bloodstream infections (CRBSIs) are a major concern in haemodialysis, but there is a lack of local epidemiological data. This study aimed to determine the incidence of CRBSI, causative agents and associated risk factors in a tertiary care hospital in Sri Lanka. METHODS: A prospective study was conducted at the dialysis unit of Colombo South Teaching Hospital, Sri Lanka from December 2019 to August 2020. Adult patients who had haemodialysis for the first time with NTHCs were included. RESULTS: Of 149 dialysis patients (104-jugular vein and 45-femoral vein, mean age 58 ± 13.7 years, mean duration of catheterization 7.9 ± 3.4 days), the incidence of CRBSI was 13.58 per 1000 catheter days. Serum albumin levels, capillary blood sugar levels at admission, haemoglobin levels and duration of catheterization were significantly associated with CRBSI. Prescence of diabetes and patients with ESRD who started routine haemodialysis had a significantly higher risk of CRBSI. Gram-positive bacteria were the most common microorganisms associated with CRBSI (87.5%). CONCLUSIONS: Our results show high rates of infection with temporary vascular catheters in Sri Lanka, mainly due to Gram-positive bacteria. Diabetes mellitus, duration of catheterisation, low serum albumin, haemoglobin level and CBS on admission were identified as significant risk factors for CRBSI. Management strategies tailored to specific centers should be established in the nation to optimise catheter care and to monitor local microbiology for appropriate empirical antimicrobial treatment.

Development and validation of a nomogram for catheter-related thrombosis prediction in children with central venous catheter: a retrospective observational study.

BACKGROUND: Catheter-related thrombosis (CRT) is a thrombotic complication associated with using central venous catheters (CVCs). Although risk factors for CRT were identified in children, no nomograms or predictive tools are available for the pediatric population with CVCs. This study aimed to develop and validate a prediction model of asymptomatic CRT in children with CVCs. METHODS: This retrospective observational study included consecutive pediatric patients who admitted to the Children's Hospital Zhejiang University School of Medicine and received CVCs between October and December 2021. RESULTS: This study included 669 patients, 553 (314 males, aged 22.00 [0.36, 180.00] months, 62 with CRT) were in the training set, and 116 (62 males, aged 15.00 [1.13, 156.00] months, 16 with CRT) were in the validation set. Multivariate logistic regression showed that a catheter time of 0-3 days (OR = 0.201, 95%CI: 0.081-0.497, P = 0.001), catheter time of 4-7 days (OR = 0.412, 95%CI: 0.176-0.964, P = 0.041), male (OR = 3.976, 95%CI: 1.864-4.483, P < 0.001), congenital heart diseases (OR = 0.277, 95%CI: 0.078-0.987, P = 0.048), postoperative (OR = 0.161, 95%CI: 0.072-0.360, P < 0.001), and femoral CVC (OR = 2.451, 95%CI: 1.129-5.318, P = 0.002) were independently associated with CRT. The nomogram incorporating these variables showed relatively good discrimination (AUC = 0.77, 95%CI: [0.65, 0.90]) and calibration abilities in the validation set, and the decision curve analysis (DCA) yielded a clinical net benefit. CONCLUSION: A prediction model for CRT in children with CVC was established based on catheter time, sex, diseases, postoperative, and catheter vein. The nomogram based on logistic regression model showed favorable predictive performance.

Catheters linked thrombosis in neonates: a single center observational study.

BACKGROUND: Central venous catheters (CVCs) are the major risk factors for neonatal thrombosis that might negatively affect morbidity and mortality in neonates. The aim of the present work was to estimate the incidence of CVC-linked thrombosis, among neonates in the NICU of Alexandria University Maternity Hospital, Egypt, over 1year, and to determine its possible risk factors. METHODS: This observational cohort study involved 134 newborn infants born from July 2020 to July 2021with CVCs insertion during their hospital stay. Patients who had congenital anomalies, had thrombosis unrelated to the implantation of CVCs or died before 7 days of catheter placement were excluded from the analysis. The 134 neonates who met the study's eligibility requirements had 142 CVCs inserted. Serial ultrasound and Doppler scans on site of venous insertion of catheters were performed. RESULTS: Seventeen patients with catheter's thrombosis (12%) were found during the placement of 142 catheters or 1615 CVCs' days, resulting in an overall rate of 10.5 thrombotic events per 1000 catheters' days. We constructed a logistic regression model to identify risk factors behind CVC-linked thrombosis. In univariate analysis, femoral central venous lines (CVLs), catheter dwell-time, sepsis, packed red cells (PRBCs) transfusions and low platelet count were risk factors for CVC-linked thrombosis. Nevertheless, only PRBCs transfusion was significant in the multivariate analysis, with OR and 95% confidence level 5.768 (1.013-32.836). CONCLUSION: Many factors should be considered in prediction of patients at risk of thrombosis including sepsis, femoral line insertion, low platelet count and PRBCs-transfusions. In our analysis, PRBCs-transfusion through peripheral intravenous lines (PIVs) was the strongest factor associated with CVC-linked thrombosis.

Usefulness of central venous catheter replacement with a guidewire in patients with intestinal failure: a single-center study.

PURPOSE: Patients with intestinal failure (IF) require long-term parenteral nutrition using central venous catheters (CVCs), which often require replacement. We adopted a less fallible guidewire replacement (GWR) method and verified its effectiveness and validity. METHODS: We enrolled 108 cases that underwent a CVC replacement with "GWR" method with IF at our department between 2013 and 2023. We retrospectively reviewed patients' clinical details with tunneled CVC (Hickman/Broviac catheter). For the analysis, we compared for the same time period the catheter exchange method "Primary placement"; newly inserted catheter by venipuncture. RESULTS: The success rate of catheter replacement using GWR was 94.4%. There were six unsuccessful cases. A log-rank test showed no significant difference in catheter survival between primary placement and the GWR, and the time to first infection was significantly longer in the GWR (p = 0.001). Furthermore, no significant differences were observed between the two methods until the first infection, when the exchange indication was limited to infections. In the same way, when the indication was restricted to catheter-related bloodstream infection, there was no significant difference in catheter survival between the two approaches. CONCLUSION: Our GWR procedure was easy to perform and stable, with a high success rate and almost no complications. Moreover, using a guidewire did not increase the frequency of catheter replacement and the infection rate.

Bacteriemia asociada a catéteres venosos centrales no tunelizados en niños en hemodiálisis crónica / Bacteremia associated with non-tunneled central venous catheters in children undergoing chronic hemodialysis

Introducción. La infección asociada a catéter venoso central (CVC) es la principal complicación que presentan los pacientes en hemodiálisis en los que se usa este tipo de acceso. Objetivo. Estimar la incidencia de bacteriemia asociada a CVC no tunelizado, analizar la frecuencia de agentes causales y explorar factores de riesgo asociados en niños en hemodiálisis. Población y métodos. Estudio retrospectivo realizado en niños en hemodiálisis por CVC no tunelizado entre el 1 junio de 2015 y el 30 de junio de 2019. Para evaluar factores de riesgo predictores de bacteriemia asociada a CVC, se realizó regresión logística. Los factores de riesgo independiente se expresaron con odds ratio con sus respectivos intervalos de confianza del 95 %. Se consideró estadísticamente significativo un valor de p <0,05. Resultados. En este estudio se incluyeron 121 CVC no tunelizados. La incidencia de bacteriemia fue de 3,15 por 1000 días de catéter. El microorganismo aislado con mayor frecuencia fue Staphylococcus epidermidis (16 casos, 51,5 %). La infección previa del catéter fue el único factor de riesgo independiente encontrado para el desarrollo de bacteriemia asociada a CVC no tunelizado (OR: 2,84; IC95%: 1,017,96; p = 0,04). Conclusiones. El uso prolongado de los CVC no tunelizados para hemodiálisis crónica se asoció con una incidencia baja de bacteriemia. Los gérmenes grampositivos predominaron como agentes causales. La presencia de infección previa del CVC aumentó en casi 3 veces el riesgo de bacteriemia asociada a CVC en nuestra población pediátrica en hemodiálisis.

Introduction. Central venous catheter (CVC)-related infection is the main complication observed in patients undergoing hemodialysis with this type of venous access. Objective. To estimate the incidence of non-tunneled CVC-related bacteremia, analyze the frequency ofcausative agents, and explore associated risk factors in children undergoing hemodialysis. Population and methods. Retrospective study in children receiving hemodialysis via a non-tunneled CVC between June 1 st, 2015 and June 30 th, 2019. A logistic regression was carried out to assess risk factors that were predictors of CVC-related bacteremia. Independent risk factors were described as odds ratios with their corresponding 95% confidence interval (CI). A value of p < 0.05 was considered statistically significant. Results. A total of 121 non-tunneled CVCs were included in this study. The incidence of bacteremia was 3.15 per 1000 catheter-days. The most commonly isolated microorganism was Staphylococcus epidermidis(16 cases, 51.5%). Prior catheter infection was the only independent risk factor for the development of bacteremia associated with non-tunneled CVC (OR: 2.84, 95% CI: 1.01­7.96, p = 0.04). Conclusions. Prolonged use of non-tunneled CVCs for chronic hemodialysis was associated with a low incidence of bacteremia. Gram-positive microorganisms prevailed among causative agents. A prior CVC infection almost trebled the risk for CVC-related bacteremia in our pediatric population receiving hemodialysis.

An audit of central venous catheter insertion and management practices in two French university hospitals.

OBJECTIVE: To assess the compliance with French guidelines for the prevention of central venous catheter (CVC)-related infections in two university hospitals. METHODS: An observational audit was conducted in 7 wards using a digital tool. RESULTS: The prerequisite of hand hygiene (HH) were respected by 90% of health-care worker; 86% performed HH prior to equipment preparation and 59% repeated it prior to infusion. Wearing gloves when necessary and rinsing were respected in 46.7% and 75.6% of the observations. CONCLUSION: Findings showed an acceptable level of adherence to recommended practices for CVC management. However, barriers of unrespect evidence-based recommendations need to be investigated in depth.

Preventing adverse events during paediatric cancer treatment: protocol for a multi-site hybrid randomised controlled trial of catheter lock solutions (the CLOCK trial).

INTRODUCTION: Central venous access devices (CVADs) are commonly used for the treatment of paediatric cancer patients. Catheter locking is a routine intervention that prevents CVAD-associated adverse events, such as infection, occlusion and thrombosis. While laboratory and clinical data are promising, tetra-EDTA (T-EDTA) has yet to be rigorously evaluated or introduced in cancer care as a catheter lock. METHODS AND ANALYSIS: This is a protocol for a two-arm, superiority type 1 hybrid effectiveness-implementation randomised controlled trial conducted at seven hospitals across Australia and New Zealand. Randomisation will be in a 3:2 ratio between the saline (heparinised saline and normal saline) and T-EDTA groups, with randomly varied blocks of size 10 or 20 and stratification by (1) healthcare facility; (2) CVAD type and (3) duration of dwell since insertion. Within the saline group, there will be a random allocation between normal and heparin saline. Participants can be re-recruited and randomised on insertion of a new CVAD. Primary outcome for effectiveness will be a composite of CVAD-associated bloodstream infections (CABSI), CVAD-associated thrombosis or CVAD occlusion during CVAD dwell or at removal. Secondary outcomes will include CABSI, CVAD-associated-thrombosis, CVAD failure, incidental asymptomatic CVAD-associated-thrombosis, other adverse events, health-related quality of life, healthcare costs and mortality. To achieve 90% power (alpha=0.05) for the primary outcome, data from 720 recruitments are required. A mixed-methods approach will be employed to explore implementation contexts from the perspective of clinicians and healthcare purchasers. ETHICS AND DISSEMINATION: Ethics approval has been provided by Children's Health Queensland Hospital and Health Service Human Research Ethics Committee (HREC) (HREC/22/QCHQ/81744) and the University of Queensland HREC (2022/HE000196) with subsequent governance approval at all sites. Informed consent is required from the substitute decision-maker or legal guardian prior to participation. In addition, consent may also be obtained from mature minors, depending on the legislative requirements of the study site. The primary trial and substudies will be written by the investigators and published in peer-reviewed journals. The findings will also be disseminated through local health and clinical trial networks by investigators and presented at conferences. TRIAL REGISTRATION NUMBER: ACTRN12622000499785.

Comparison of complication rates between midline catheters and peripherally inserted central catheters: a systematic review and meta-analysis of randomized controlled trials.

Midline catheters (MCs) and peripherally inserted central catheters (PICCs) are essential for reliable vascular access in patients. Despite their prevalent use, comparative risk assessments of these catheters, particularly from randomized controlled trials (RCTs), remain scarce. This meta-analysis primarily focuses on RCTs to evaluate and compare the incidence of complications associated with MCs and PICCs. We conducted a comprehensive search of databases including the Cochrane Library, PubMed, Embase, Web of Science, ScienceDirect, Scopus and ProQuest, up to April 2024. The primary outcomes analysed were total complications and catheter-related bloodstream infections (CRBSIs), while secondary outcomes included catheter dwell time and thrombosis incidence. Meta-analyses were performed using a random-effects model. Of 831 initially identified articles, five trials involving 608 patients met the inclusion criteria. MCs exhibited a significantly higher rate of total complications compared with PICCs (relative risk = 1.95, 95% confidence interval = 1.23-3.08, P=0.005, I2= 0%). MCs also had shorter dwell times and a higher incidence of premature removal. However, no significant differences were observed in the rates of CRBSIs or thrombosis between MCs and PICCs. PICCs are associated with fewer total complications and longer dwell times compared with MCs, which tend to be more often removed prematurely. Thrombosis rates were similar between the two catheter types, underscoring the need for careful catheter selection based on specific patient conditions and treatment duration. Further research, particularly additional RCTs, is necessary to confirm these findings and guide optimal catheter selection in clinical practice.

A new dynamic in vitro model for evaluating antimicrobial activity against bacterial biofilms on central venous catheters.

Central venous catheters (CVCs) are widely used for intravenous medication administration. However, biofilm formation along the catheter surface is the main most important cause of catheter-related bloodstream infections. Nowadays, several antimicrobial-coated catheters are available to prevent biofilm development. In this study, we introduced a new dynamic in vitro model to evaluate the antimicrobial activity against bacterial biofilms on CVCs. Rifampicin-minocycline-coated catheters and control catheters without antimicrobial component were assembled into the model to test the antimicrobial activity on external surface and internal surface. After 1 h irrigation of Staphylococcus epidermidis or Staphylococcus aureus preculture and 23 h irrigation of Trypticase Soy Broth, the viable adherent organism was collected and counted. The enumeration results showed that the number of bacteria attached to antibacterial catheter was significantly less than that of the control catheter, both on external surface (P < 0.05) and internal surface (P < 0.05). The results were further confirmed by the scanning electron microscopy. In conclusion, the dynamic in vitro model can be applied to evaluate the antimicrobial activity against bacterial biofilms grown on the external and internal surfaces of CVCs used in clinical practice.IMPORTANCEFor the first time, a new dynamic in vitro model was constructed to evaluate the antimicrobial activity against bacterial biofilms on central venous catheters (CVCs) on both external surface and internal surface. This model could be applied to evaluate the antimicrobial activity against bacterial biofilms not only on CVCs but also other types of catheters.

Virtual Reality Training for Central Venous Catheter Placement: An Interventional Feasibility Study Incorporating Virtual Reality Into a Standard Training Curriculum of Novice Trainees.

OBJECTIVES: This study assess the feasibility of integrating virtual reality (VR) simulation into the central venous catheter (CVC) placement training curriculum. DESIGN: The study consists of 3 parts: (1) Evaluating current manikin-based training for CVC placement through surveys for senior first-year anesthesia residents and cardiac anesthesia faculty who supervise resident performing the procedure; (2) Interventional study training novice trainees with VR simulator and assessing their reaction satisfaction; and (3) pilot study integrating VR training sessions into CVC training curriculum for first-year anesthesia residents. SETTING: Conducted at a single academic-affiliated medical center from December 2022 to August 2023. PARTICIPANTS: Junior first-year anesthesia residents. INTERVENTIONS: VR training sessions for CVC placements using the Vantari VR system. MEASUREMENTS AND MAIN RESULTS: Primary outcome: novice trainees' satisfaction with VR training for CVC procedure. Satisfaction of resident and faculty with standard manikin-based training was also collected. Faculty expressed concerns about residents' confidence and perceived knowledge in performing CVC placement independently. Novice trainees showed high satisfaction and perceived usefulness with VR training, particularly in understanding procedural steps and developing spatial awareness. Pilot integration of VR training into the curriculum demonstrated comparable training times and emphasized structured stepwise training modules to ensure completion of vital procedural steps. CONCLUSIONS: This study underscores the potential of VR simulation as a complementary training tool for CVC placement rather than a substitution of standard manikin training. VR is offering immersive experiences and addressing limitations of traditional manikin-based training methods. The integration of VR into training curricula warrants further exploration to optimize procedural proficiency and patient safety in clinical practice.