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Xie W, Xu B, Lou X, Zhu J, Ye S. Development and validation of a nomogram for catheter-related thrombosis prediction in children with central venous catheter: a retrospective observational study. BMC Pediatr 2024; 24:534. [PMID: 39164645 DOI: 10.1186/s12887-024-05008-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Accepted: 08/13/2024] [Indexed: 08/22/2024] Open
Abstract
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.
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Affiliation(s)
- Wangfang Xie
- Comprehensive Intensive Care Unit, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, 310003, Zhejiang, China
| | - Bin Xu
- Department of Ultrasound, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, 310003, Zhejiang, China.
| | - Xiaofang Lou
- Department of Nursing, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, 310003, Zhejiang, China
| | - Jihua Zhu
- Department of Nursing, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, 310003, Zhejiang, China
| | - Sheng Ye
- Comprehensive Intensive Care Unit, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, 310003, Zhejiang, China
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2
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Zhao QY, Li Q, Cui TL. Risk factors for hypotension in patients with hemodialysis-associated superior vena cava syndrome. J Vasc Surg Venous Lymphat Disord 2024; 12:101682. [PMID: 37708936 DOI: 10.1016/j.jvsv.2023.08.021] [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] [Received: 03/08/2023] [Revised: 08/02/2023] [Accepted: 08/18/2023] [Indexed: 09/16/2023]
Abstract
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.
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Affiliation(s)
- Qiu-Yan Zhao
- General Practice Ward/International Medical Center Ward, General Practice Medical Center, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, China
| | - Qiu Li
- Department of Nephrology, The First People's Hospital of Shuangliu District, Chengdu, China
| | - Tian-Lei Cui
- Department of Nephrology, West China Hospital/West China School of Medicine, Sichuan University, Chengdu, China.
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3
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Rahimi Z, Abdolvand N, Sepehri MM, Khavanin Zadeh M. The association of vitamin-D level with catheter-related-thrombosis in hemodialysis patients: A data mining model. J Vasc Access 2023; 24:606-613. [PMID: 33719687 DOI: 10.1177/11297298211001157] [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
PURPOSE This study aims to investigate the association of different risk factors including vitamin-D level with catheter-related-thrombosis in hemodialysis patients by applying data mining techniques. METHODS This study used the retrospectively approach and was done based on the CRISP-DM framework. The data of 1048 hemodialysis patients of Hasheminejad Kidney Center whose first catheterization was between 2014 and 2019 was used for analysis. In this study, patients with a previous history of deep venous thrombosis, thrombophilic condition, and undergone anticoagulant therapy were excluded. The decision tree J48 in WEKA software was used for modeling. The K-fold cross-validation method was also used to evaluate the classification performance. Finally, the model was evaluated by using Confusion Matrix and F-Measure. RESULTS The approved model was accurate in 70.3% of the predictions, and it demonstrated an association between patients' vitamin-D range and catheter-related-thrombosis. CONCLUSION The results indicated that in hemodialysis patients without the history of cancer or high blood pressure, vitamin-D had a significant impact on catheter related thrombosis.
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Affiliation(s)
- Zhaleh Rahimi
- Department of Management, Faculty of Social Sciences and Economics, Alzahra University, Tehran, Iran
| | - Neda Abdolvand
- Department of Management, Faculty of Social Sciences and Economics, Alzahra University, Tehran, Iran
| | - Mohammad Mehdi Sepehri
- Group of Information Technology Engineering, Department of Industrial Engineering, Tarbiat Modares University, Tehran, Iran
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Falanga A, Ay C, Di Nisio M, Gerotziafas G, Jara-Palomares L, Langer F, Lecumberri R, Mandala M, Maraveyas A, Pabinger I, Sinn M, Syrigos K, Young A, Jordan K. Venous thromboembolism in cancer patients: ESMO Clinical Practice Guideline. Ann Oncol 2023; 34:452-467. [PMID: 36638869 DOI: 10.1016/j.annonc.2022.12.014] [Citation(s) in RCA: 74] [Impact Index Per Article: 74.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 12/09/2022] [Accepted: 12/11/2022] [Indexed: 01/11/2023] Open
Affiliation(s)
- A Falanga
- Division of Immunohaematology and Transfusion Medicine, Haemostasis and Thrombosis Center, Department of Oncology and Haematology, Hospital Papa Giovanni XXIII, Bergamo, Italy; University of Milan Bicocca, Department of Medicine and Surgery, Monza, Italy
| | - C Ay
- Department of Medicine I, Clinical Division of Haematology and Haemostaseology, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - M Di Nisio
- Department of Medicine and Ageing Sciences, G. d'Annunzio University, Chieti, Italy
| | - G Gerotziafas
- Sorbonne University, INSERM UMRS-938, Team "Cancer Vessels, Biology and Therapeutics", Group "Cancer-Hemostasis-Angiogenesis", Institut Universitaire de Cancérologie, Consultation Thrombosis in Oncology (COTHON), Tenon-Saint Antoine Hospital, AP-HP, Paris, France
| | - L Jara-Palomares
- Respiratory Department, Medical Surgical Unit of Respiratory Diseases, Hospital Virgen del Rocio, Sevilla; Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - F Langer
- Centre for Oncology, University Cancer Centre Hamburg (UCCH), II Medical Clinic and Polyclinic, University Medical Centre Eppendorf, Hamburg, Germany
| | - R Lecumberri
- Servicio de Hematología, Clínica Universidad de Navarra, Pamplona (Navarra); CIBER-CV, Instituto de Salud Carlos III, Madrid, Spain
| | - M Mandala
- University of Perugia, Unit of Medical Oncology, Santa Maria Misericordia Hospital, Perugia, Italy
| | - A Maraveyas
- Queen's Centre for Oncology and Haematology, Faculty of Health Sciences, Hull York Medical School and Hull University Teaching Hospitals NHS Trust, Hull, UK
| | - I Pabinger
- Department of Medicine I, Clinical Division of Haematology and Haemostaseology, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - M Sinn
- Centre for Oncology, University Cancer Centre Hamburg (UCCH), II Medical Clinic and Polyclinic, University Medical Centre Eppendorf, Hamburg, Germany
| | - K Syrigos
- Oncology Unit, 3rd Department of Medicine, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - A Young
- Warwick Clinical Trials Unit, Warwick Medical School, University of Warwick, Coventry, UK
| | - K Jordan
- Department of Hematology, Oncology and Palliative Medicine, Ernst von Bergmann Hospital, Potsdam, Germany; Department of Rheumatology, Oncology and Rheumatology, University Hospital Heidelberg, Heidelberg, Germany
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5
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Hematology and coagulation preanalytics for clinical chemists: Factors intrinsic to the sample and extrinsic to the patient. Clin Biochem 2022; 115:3-12. [PMID: 36493884 DOI: 10.1016/j.clinbiochem.2022.11.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 10/24/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022]
Abstract
In hematology and coagulation, diligence in the preanalytical phase of testing is of critical importance to obtaining reliable test results. If the sample used for testing is unsuitable, even outstanding analytical procedures and technology cannot produce a clinically-reliable result. Therefore, the intent of this manuscript is to review preanalytical factors intrinsic to the sample that affect the hematology and coagulation testing. Factors intrinsic to the sample (excluding in vivo anomalies) can be controlled, theoretically, by phlebotomists (including nurses) and laboratorians in the preanalytical phase of testing. Furthermore, the management and prevention of such factors is highlighted. Erroneous control of preanalytical factors can produce laboratory errors.
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6
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Li H, Lu Y, Zeng X, Feng Y, Fu C, Duan H, Shu Q, Zhu J. Risk factors for central venous catheter-associated deep venous thrombosis in pediatric critical care settings identified by fusion model. Thromb J 2022; 20:18. [PMID: 35414086 PMCID: PMC9004113 DOI: 10.1186/s12959-022-00378-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 03/29/2022] [Indexed: 12/03/2022] Open
Abstract
Background An increase in the incidence of central venous catheter (CVC)-related thrombosis (CRT) has been reported in pediatric intensive care patients over the past decade. Risk factors for the development of CRT are not well understood, especially in children. The study objective was to identify potential clinical risk factors associated with CRT with novel fusion machine learning models. Methods Patients aged 0–18 who were admitted to intensive care units from December 2015 to December 2018 and underwent at least one CVC placement were included. Two fusion model approaches (stacking and blending) were used to build a better performance model based on three widely used machine learning models (logistic regression, random forest and gradient boosting decision tree). High-impact risk factors were identified based on their contribution in both fusion artificial intelligence models. Results A total of 478 factors of 3871 patients and 3927 lines were used to build fusion models, one of which achieved quite satisfactory performance (AUC = 0.82, recall = 0.85, accuracy = 0.65) in 5-fold cross validation. A total of 11 risk factors were identified based on their independent contributions to the two fusion models. Some risk factors, such as D-dimer, thrombin time, blood acid-base balance-related factors, dehydrating agents, lymphocytes and basophils were identified or confirmed to play an important role in CRT in children. Conclusions The fusion model, which achieves better performance in CRT prediction, can better understand the risk factors for CRT and provide potential biomarkers and measures for thromboprophylaxis in pediatric intensive care settings. Supplementary information The online version contains supplementary material available at 10.1186/s12959-022-00378-y.
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Affiliation(s)
- Haomin Li
- The Children's Hospital of Zhejiang University School of Medicine and National Clinical Research Center for Child Health, Hangzhou, China. .,Clinical Data Center, The Children's Hospital, Zhejiang University School of Medicine, 3333 Binsheng Road, 310052, Hangzhou, China.
| | - Yang Lu
- The College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, China
| | - Xian Zeng
- The College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, China
| | - Yuqing Feng
- The Children's Hospital of Zhejiang University School of Medicine and National Clinical Research Center for Child Health, Hangzhou, China.,Clinical Data Center, The Children's Hospital, Zhejiang University School of Medicine, 3333 Binsheng Road, 310052, Hangzhou, China
| | - Cangcang Fu
- The Children's Hospital of Zhejiang University School of Medicine and National Clinical Research Center for Child Health, Hangzhou, China.,Department of Nursing, The Children's Hospital, Zhejiang University School of Medicine, 3333 Binsheng Road, 310052, Hangzhou, China
| | - Huilong Duan
- The College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, China
| | - Qiang Shu
- The Children's Hospital of Zhejiang University School of Medicine and National Clinical Research Center for Child Health, Hangzhou, China
| | - Jihua Zhu
- The Children's Hospital of Zhejiang University School of Medicine and National Clinical Research Center for Child Health, Hangzhou, China. .,Department of Nursing, The Children's Hospital, Zhejiang University School of Medicine, 3333 Binsheng Road, 310052, Hangzhou, China.
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7
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Ashcraft M, Douglass M, Garren M, Mondal A, Bright LE, Wu Y, Handa H. Nitric Oxide-Releasing Lock Solution for the Prevention of Catheter-Related Infection and Thrombosis. ACS APPLIED BIO MATERIALS 2022; 5:1519-1527. [PMID: 35343228 PMCID: PMC9680935 DOI: 10.1021/acsabm.1c01272] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Although frequently used, venous catheters are often associated with serious complications such as infection and thrombosis. Lock solution therapies are clinically used to deter these issues but generally address only infection or thrombosis with limited success. Here, we report the development of a dual-functional lock therapy using nitric oxide (NO) donor molecule, S-nitrosoglutathione (GSNO). NO is a potent, broad-spectrum antimicrobial agent that also temporarily inhibits platelet activation, preventing thrombosis. Furthermore, NO has antibiofilm actions, an ability that traditional antibiotic lock solutions lack, thus limiting their efficacy. In this work, different concentrations of GSNO were characterized via NO analysis to determine a range of NO-releasing lock solution (NOreLS) concentrations to investigate and to demonstrate prolonged potential efficacy. Tested against clinically used vancomycin and gentamicin lock solutions, GSNO-based NOreLS repeatedly outperformed in models of different stages of catheter infections. NOreLS also prevented clot formation when exposed to whole blood, showing increased efficacy compared to a heparin lock solution. Moreover, NOreLS was demonstrated to be biocompatible via hemolysis and cytotoxicity assays. NOreLS has excellent potential for safely and effectively preventing infection and thrombosis related to catheter usage.
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Affiliation(s)
- Morgan Ashcraft
- Pharmaceutical and Biomedical Sciences Department, College of Pharmacy, University of Georgia, Athens, Georgia 30602, United States
| | - Megan Douglass
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Mark Garren
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Arnab Mondal
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Lori Estes Bright
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Yi Wu
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Hitesh Handa
- Pharmaceutical and Biomedical Sciences Department, College of Pharmacy, University of Georgia, Athens, Georgia 30602, United States.,School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, Georgia 30602, United States
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Bahl A, Diloreto E, Jankowski D, Hijazi M, Chen NW. Comparison of 2 Midline Catheter Devices With Differing Antithrombogenic Mechanisms for Catheter-Related Thrombosis: A Randomized Clinical Trial. JAMA Netw Open 2021; 4:e2127836. [PMID: 34613402 PMCID: PMC8495531 DOI: 10.1001/jamanetworkopen.2021.27836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
IMPORTANCE Data regarding upper extremity midline catheter (MC)-related thrombosis (CRT) are sparse, with some evidence indicating that MCs have a high rate of CRT. OBJECTIVE To compare 2 MCs with differing antithrombogenic mechanisms for this outcome. DESIGN, SETTING, AND PARTICIPANTS In this parallel, 2-arm randomized clinical trial, 496 adult patients hospitalized at a tertiary care suburban academic medical center who received an MC were assessed for eligibility between January 1, 2019, and October 31, 2020, and 212 were randomized. INTERVENTIONS Inpatients were randomized to receive a 4F antithrombotic MC (MC-AT) or a 4.5F antithrombotic and antimicrobial MC (MC-AT-AM). MAIN OUTCOMES AND MEASURES The primary outcome was symptomatic midline CRT inclusive of deep vein thrombosis or superficial venous thrombophlebitis within 30 days after insertion. Secondary outcomes included catheter-associated bloodstream infection and catheter failure. RESULTS A total of 191 patients (mean [SD] age, 60.2 [16.7] years; 114 [59.7%] female) were included in the final analysis: 94 patients in the MC-AT group and 97 in the MC-AT-AM group. Symptomatic midline CRT occurred in 7 patients (7.5%) in the MC-AT group and 11 (11.3%) in the MC-AT-AM group (P = .46). Deep vein thrombosis occurred in 5 patients (5.3%) in the MC-AT group and 5 patients (5.2%) in the MC-AT-AM group (P > .99). Pulmonary embolism occurred in 1 patient in the MC-AT group. No catheter-associated bloodstream infection occurred in either group. Premature catheter failure occurred in 22 patients (23.4%) in the MC-AT group and 20 (20.6%) in the MC-AT-AM group (P = .64). In Cox proportional hazards regression analysis, no statistically significant difference was found between groups for the risk of catheter failure (hazard ratio, 1.27; 95% CI, 0.67-2.43; P = .46). CONCLUSIONS AND RELEVANCE No difference was found in thrombosis in MCs with 2 distinct antithrombogenic mechanisms; however, the risk of CRT in both groups was high. Practitioners should strongly consider the safety risks associated with MCs when determining the appropriate vascular access device. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT03725293.
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Affiliation(s)
- Amit Bahl
- Department of Emergency Medicine, Beaumont Hospital, Royal Oak, Royal Oak, Michigan
| | - Emily Diloreto
- Vascular Access Team, Beaumont Hospital, Royal Oak, Michigan
| | | | - Mahmoud Hijazi
- Oakland University William Beaumont School of Medicine, Rochester, Michigan
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9
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Wen C, Ying Y, Zhao H, Jiang Q, Gan X, Wei Y, Wei J, Huang X. Resistance exercise affects catheter-related thrombosis in rats through miR-92a-3p, oxidative stress and the MAPK/NF-κB pathway. BMC Cardiovasc Disord 2021; 21:440. [PMID: 34530722 PMCID: PMC8444419 DOI: 10.1186/s12872-021-02233-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 08/05/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND MiR-92a-3p and oxidative stress are associated with catheter-related thrombosis (CRT). As a kind of physical intervention, resistance exercise can effectively promote blood circulation. In this study, we investigated the roles of miR-92a-3p, oxidative stress and the P38 mitogen-activated protein kinase/nuclear factor-κB (MAPK/NF-κB) pathway in CRT during resistance exercise. METHODS The rat CRT model was used for resistance exercise intervention. Moreover, pathological changes from the right jugular vein to the right auricle were observed under an electron microscope. In addition, reactive oxygen species (ROS) production, malondialdehyde (MDA) activity and heme oxygenase (HO-1) level in rat serum were detected via ELISA. The expression levels of miR-92A-3p and HO-1 in the vascular tissues of the rats were determined via real-time quantitative PCR. Additionally, the expression levels of HO-1, NF-κB P65, p38MAPK and IκBa in the venous tissues of the rats were analysed by Western blot analysis. RESULTS The pathological results showed that the thrombosis incidence rate in the CRT + RE group was lower than that in the CRT group. In the CRT group, the expression levels of ROS and MDA, which are markers related to oxidative stress in serum, significantly increased whilst the expression of HO-1 decreased. In the venous tissue, the expression of miR-92a-3p increased, the level of HO-1 decreased, the levels of p38MAPK and NF-κB p65 significantly increased but that of P-IκBa and IκBa significantly decreased. In the CRT + RE group, after administering the resistance exercise intervention, ROS production and MDA activity in serum significantly decreased, the expression level of HO-1 increased and the expression level of miR-92a-3p in the venous tissues significantly decreased and was negatively correlated with that of HO-1. The levels of p38MAPK and NF-κB p65 significantly decreased but that of P- IκBa and IκBa significantly increased. CONCLUSION Resistance exercise intervention downregulated miR-92a-3p expression, repaired oxidative stress injury and prevented CRT formation.
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Affiliation(s)
- Cui Wen
- Department of Nursing, The First Affiliated Hospital of Guangxi Medical University, No. 6, Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Yanping Ying
- Department of Nursing, The First Affiliated Hospital of Guangxi Medical University, No. 6, Shuangyong Road, Nanning, 530021, Guangxi, China.
| | - Huihan Zhao
- Department of Nursing, The First Affiliated Hospital of Guangxi Medical University, No. 6, Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Qingjuan Jiang
- Department of Nursing, The First Affiliated Hospital of Guangxi Medical University, No. 6, Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Xiao Gan
- Department of Nursing, The First Affiliated Hospital of Guangxi Medical University, No. 6, Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Yan Wei
- Department of Nursing, The First Affiliated Hospital of Guangxi Medical University, No. 6, Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Jiani Wei
- Department of Nursing, The First Affiliated Hospital of Guangxi Medical University, No. 6, Shuangyong Road, Nanning, 530021, Guangxi, China
| | - Xinxin Huang
- Department of Nursing, The First Affiliated Hospital of Guangxi Medical University, No. 6, Shuangyong Road, Nanning, 530021, Guangxi, China
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10
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Yuen HLA, Tran H, Chunilal S. Upper Extremity Deep Vein Thrombosis: Current Knowledge and Future Directions. Semin Thromb Hemost 2021; 47:677-691. [PMID: 33971684 DOI: 10.1055/s-0041-1725116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Upper extremity deep vein thrombosis (UEDVT) has been increasing in incidence due to the escalating use of central venous catheters such as peripherally inserted central catheters. UEDVT can be primary idiopathic or secondary to pacemaker leads, intravascular catheters or cancer. In comparison to conventional venous thromboembolism such as lower limb deep vein thrombosis or pulmonary embolism the risk factors, investigations, and management are not well defined. We review current evidence in primary and secondary UEDVT, highlighting areas in need of further research. We also explore the entity of venous thoracic outlet syndrome, which is said to be a risk factor for recurrent primary UEDVT and is the rationale behind surgical interventions.
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Affiliation(s)
- Hiu Lam Agnes Yuen
- Monash Haematology, Monash Health, Melbourne, Australia.,Department of Medicine, Monash University, Melbourne, Australia
| | - Huyen Tran
- Department of Medicine, Monash University, Melbourne, Australia
| | - Sanjeev Chunilal
- Monash Haematology, Monash Health, Melbourne, Australia.,Department of Medicine, Monash University, Melbourne, Australia
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Kakkos SK, Gohel M, Baekgaard N, Bauersachs R, Bellmunt-Montoya S, Black SA, Ten Cate-Hoek AJ, Elalamy I, Enzmann FK, Geroulakos G, Gottsäter A, Hunt BJ, Mansilha A, Nicolaides AN, Sandset PM, Stansby G, Esvs Guidelines Committee, de Borst GJ, Bastos Gonçalves F, Chakfé N, Hinchliffe R, Kolh P, Koncar I, Lindholt JS, Tulamo R, Twine CP, Vermassen F, Wanhainen A, Document Reviewers, De Maeseneer MG, Comerota AJ, Gloviczki P, Kruip MJHA, Monreal M, Prandoni P, Vega de Ceniga M. Editor's Choice - European Society for Vascular Surgery (ESVS) 2021 Clinical Practice Guidelines on the Management of Venous Thrombosis. Eur J Vasc Endovasc Surg 2020; 61:9-82. [PMID: 33334670 DOI: 10.1016/j.ejvs.2020.09.023] [Citation(s) in RCA: 291] [Impact Index Per Article: 72.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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12
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McGonigle AM, Patel EU, Waters KM, Moliterno AR, Thoman SK, Vozniak SO, Ness PM, King KE, Tobian AAR, Lokhandwala PM. Solvent detergent treated pooled plasma and reduction of allergic transfusion reactions. Transfusion 2019; 60:54-61. [PMID: 31840276 DOI: 10.1111/trf.15600] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 10/11/2019] [Accepted: 10/11/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Thrombotic thrombocytopenic purpura (TTP) patients have increased risk for allergic transfusion reactions (ATR) due to the number of plasma products they require. This study evaluated the efficacy of solvent detergent treated plasma (S/D treated plasma) to reduce ATRs. STUDY DESIGN AND METHODS All TTP patients who presented from April 2014 to February 2015 and experienced a moderate-severe ATR to untreated plasma with TPE were switched to S/D treated plasma (Octaplas) for their remaining procedures and included in the study. Patient records were retrospectively reviewed. RESULTS The overall ATR rate per procedure decreased from 35.0% (95% CI = 15.4%-59.2%) with untreated plasma to 1.4% ([1/73] 95% CI = 0.0%-7.4%) with S/D treated plasma. The moderate-severe ATR rate decreased from 20.0% ([4/20] 95% CI = 5.7%-43.7%) with untreated plasma to 0.0% ([0/73] 95% CI = 0.0%-4.9%) with S/D treated plasma. The overall ATR rate per plasma unit decreased from 2.6% (95%CI = 1.0%-5.1%) with untreated plasma to 0.1% (95% CI = 0.0%-0.4%) with S/D treated plasma. No patients experienced VTE while receiving untreated plasma. Four patients experienced VTE events while receiving S/D treated plasma. All patients who experienced a VTE had additional risk factors for VTE. CONCLUSION S/D plasma has promise as an effective product to reduce the risk of ATRs in TTP patients. Given the high risk of ATR in TTP patients, consideration of S/D plasma instead of untreated plasma for TPE in these patients may be warranted, especially for patients with a history of moderate to severe ATR. More extensive studies are needed to confirm these findings.
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Affiliation(s)
- Andrea M McGonigle
- Department of Pathology and Laboratory Medicine, Wing-Kwai and Alice Lee-Tsing Chung Transfusion Service, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Eshan U Patel
- Department of Pathology, Transfusion Medicine Division, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Kevin M Waters
- Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, California
| | - Alison R Moliterno
- Department of Medicine, Hematology Division, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Sandra K Thoman
- Department of Pathology, Transfusion Medicine Division, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Sonja O Vozniak
- Department of Pathology, Transfusion Medicine Division, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Paul M Ness
- Department of Pathology, Transfusion Medicine Division, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Karen E King
- Department of Pathology, Transfusion Medicine Division, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Aaron A R Tobian
- Department of Pathology, Transfusion Medicine Division, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Parvez M Lokhandwala
- Department of Pathology, Transfusion Medicine Division, Johns Hopkins University School of Medicine, Baltimore, Maryland
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13
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NM Bhat M, Venkatraman R, Ramakrishnan N, K Abraham B, Rajagopalan S. Value of Routine Sonographic Screening of Internal Jugular Vein to Detect Catheter Related Thrombosis in Intensive Care Unit. Indian J Crit Care Med 2019; 23:326-328. [PMID: 31406439 PMCID: PMC6686590 DOI: 10.5005/jp-journals-10071-23207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND AND AIMS Internal jugular vein (IJV) cannulation is a common procedure in the ICU with thrombosis being an uncommon, albeit serious complication. Thrombosis is one of the important complications of IJV cannulation. This study aims to evaluate the use of ultrasound screening by intensivists to assess the incidence of catheter-related IJV thrombosis in ICU. MATERIALS AND METHODS Fifty consecutive IJV cannulations meeting the inclusion criteria were analyzed in the ICU. Duplex scanning and color doppler sonography were performed by the intensivist on day 3, 6, 9, 12 and 15 after cannulation. The thrombus, when detected, was confirmed independently by a radiologist. The patient demographics, the type of catheter, laterality and the mean duration of catheterization were recorded. Risk factors like presence of circulatory shock, thrombocytosis, DIC, liver disease, and absence of chemoprophylaxis for DVT were documented. RESULTS A total of 39 patients and 50 cannulations were studied. The mean age of patients was 56.5±16.2 years and mean duration of catheterization was 6.6±2.1 days. We found a 38% (19/50) incidence of thrombosis in our study. There was 100% correlation in detection of thrombosis by the intensivist and the radiologist. The thrombus was detected at 6.9±2.1 days after cannulation. All the patients who developed thrombosis had one or more risk factors. The most common risk factor was circulatory shock (40%). Central line associated blood stream infection (CLABSI) was seen only in the patients in whom IJV thrombus was detected (5/19). CONCLUSION Catheter-related IJV thrombosis is a frequent complication in ICU patients and is associated with the increased risk of CLABSI. Ultrasound screening is simple, feasible and accurate in diagnosing IJV thrombosis. HOW TO CITE THIS ARTICLE Bhat MNM, Venkatraman R, Ramakrishnan N, Abraham BK, Rajagopalan S. Value of Routine Sonographic Screening of Internal Jugular Vein to Detect Catheter Related Thrombosis in Intensive Care Unit. Indian J Crit Care Med 2019;23(7):326-328.
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Affiliation(s)
- Manohar NM Bhat
- Department of Critical Care Medicine, Apollo Hospitals, Chennai, India
| | | | | | - Babu K Abraham
- Department of Critical Care Medicine, Apollo Hospitals, Chennai, India
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Coburn JA, Golden E, Brucker J, Kennedy TA. Nontraumatic Vascular Emergencies of the Neck. Semin Ultrasound CT MR 2019; 40:157-171. [PMID: 31030739 DOI: 10.1053/j.sult.2018.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Nontraumatic vascular emergencies of the head and neck are uncommon, but can occur in patients with central venous catheters, head and neck infections, and in patients with head and neck cancer. Recognizing the imaging findings of vascular complications in these patient populations is critically important to ensure expeditious treatment to avoid significant morbidity and mortality.
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Affiliation(s)
- John A Coburn
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Edwarda Golden
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Justin Brucker
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI
| | - Tabassum A Kennedy
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI.
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15
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Yang Q, Lee A, Bentley RT, Lee H. Piezoresistor-Embedded Multifunctional Magnetic Microactuators for Implantable Self-Clearing Catheter. IEEE SENSORS JOURNAL 2019; 19:1373-1378. [PMID: 31579395 PMCID: PMC6774376 DOI: 10.1109/jsen.2018.2880576] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Indwelling catheters are used widely in medicine to treat various chronic medical conditions. However, chronic implantation of catheters often leads to a premature failure due to biofilm accumulation. Previously we reported on the development of a self-clearing catheter by integrating polymer-based microscale magnetic actuators. The microactuator provides an active anti-biofouling mechanism to disrupt and remove adsorbed biofilm on demand using an externally applied stimulus. During an in vivo evaluation of self-clearing catheter, we realized that it is important to periodically monitor the performance of implanted microactuators. Here we integrate gold-based piezoresistive strain-gauge on our magnetic microactuators to directly monitor the device deflection with good sensitivity (0.035%/Deg) and linear range (±30°). With the integrated strain-gauge, we demonstrate the multi-functional capabilities of our magnetic microactuators that enable device alignment, flow-rate measurement, and obstruction detection and removal towards the development of chronically implantable self-clearing smart catheter.
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Affiliation(s)
- Qi Yang
- Department of Electrical and Computer Engineering, Purdue University, West Lafayette, IN 47907 USA
| | - Albert Lee
- Goodman Campbell Brain and Spine, Department of Neurological Surgery, Indiana University, Indianapolis, IN 46202 USA
| | - R Timothy Bentley
- College of Veterinary Medicine, Purdue University, West Lafayette, IN, 47907 USA
| | - Hyowon Lee
- Weldon School of Biomedical Engineering, Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907 USA
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16
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Al-Asadi O, Almusarhed M, Eldeeb H. Predictive risk factors of venous thromboembolism (VTE) associated with peripherally inserted central catheters (PICC) in ambulant solid cancer patients: retrospective single Centre cohort study. Thromb J 2019; 17:2. [PMID: 30697126 PMCID: PMC6346522 DOI: 10.1186/s12959-019-0191-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 01/02/2019] [Indexed: 01/02/2023] Open
Abstract
Aims Peripherally inserted central catheters(PICC) lines are becoming increasingly popular in solid cancer patients for the administration of chemotherapy. This study aims looking at the incidence of PICC line related and distant thromboembolism associated with these catheters and exploring risk factors. Methods Records were reviewed for 158 patients who underwent PICC line insertion over the two years period in the medical oncology unit, Milton Keynes University Hospital. The Incidence PICC line related Deep Venous Thrombosis (DVT) which is defined as upper extremity DVT at the site of PICC line insertion was documented after checking reports of ultrasound Doppler of all symptomatic patients to confirm the presence of thrombo-embolism and Computed Tomography(CT)scan or Computed Tomography Pulmonary Angiography (CTPA) to confirm the presence Pulmonary Embolism(PE). Results 23(13%) symptomatic patients with confirmed diagnosis by ultrasound Doppler were found to have PICC line related DVT and similar number of patients developed distant VTE, namely PE and lower limbs DVT. Average time to thrombo-embolism from the insertion of PICC line was 13 days and 51 days in distant VTE. Statistically significant results have been identified in the term of risk factors leading to VTE events during the period of PICC line insertion. Conclusions VTE is a common complication in medical oncology patients who underwent insertion PICC line insertion for chemotherapy. Risk of distant VTE is high as well as the PICC line related DVT and the risk of the PICC line related DVT is higher in the first two weeks after PICC insertion. We concluded that high BMI,high PLTs count and Fluropyrimidine containing chemotherapy are all significant risk factors for VTE events recorded while smoking and high BMI are significantly contributing to the high rate of the PICC line related DVT.
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Affiliation(s)
- Osamah Al-Asadi
- 1Department of Oncology, Milton Keynes University Hospital, Milton Keynes, UK.,2School of Medicine, University of Buckingham, Buckingham, UK.,3College of medicine, Al-Mustansiriyah University, Baghdad, Iraq
| | - Manar Almusarhed
- 1Department of Oncology, Milton Keynes University Hospital, Milton Keynes, UK.,2School of Medicine, University of Buckingham, Buckingham, UK.,4College of medicine, Babylon University, Babylon, Iraq
| | - Hany Eldeeb
- 1Department of Oncology, Milton Keynes University Hospital, Milton Keynes, UK.,2School of Medicine, University of Buckingham, Buckingham, UK
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17
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Sahutoglu T, Erinc O, Avsar FN, Beyaz M, Batu A, Atay K, Ozdemir E, Erinc A, Sahutoglu E. Which Type of Temporary Hemodialysis Catheter Should Be Used for the Right Internal Jugular Vein? Prospective Observational Study of Straight vs. Precurved Catheters. Ther Apher Dial 2018; 23:328-335. [PMID: 30447048 DOI: 10.1111/1744-9987.12776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/12/2018] [Accepted: 11/13/2018] [Indexed: 11/25/2022]
Abstract
Weak evidence is present for choosing amongst different temporary hemodialysis catheter (THC) designs with regards to the risk of venous thrombosis, therefore two THC designs for the right internal jugular vein (RIJV) were compared. Patients aged ≥18 years who needed THC insertion into the RIJV for acute hemodialysis due to either acute or chronic renal failure were included. The type of THC (precurved/straight) was dependent on the date of hospital admission. Clinical and ultrasonographic surveillance was conducted prospectively. Thrombosis of the RIJV was the primary objective. Precurved and straight catheters were inserted into 32 and 23 patients (mean age 63 ± 15 years, females 28), respectively. The baseline characteristics and catheter dwell-times were similar in both groups. Partial and total thrombosis of the RIJV during catheter dwell-time developed at a higher rate in the straight group (52% vs. 9.3%, P = 0.000; 47.8% vs. 9.3%, P = 0.001, respectively). At least 2 weeks after catheter removal, total thrombosis was found in 43.4% vs. 9.6% (P = 0.004) of patients with straight and precurved THCs, respectively. The hazard ratios for total thrombosis was 0.161 (P = 0.006) during catheter dwell-time and 0.190 (P = 0.012) after catheter removal. Catheter dysfunction did not occur and only one catheter-related bloodstream infection (CRBI) was seen. Thrombosis rates of the RIJV were higher with straight vs. precurved THCs, both during catheter dwell-time and after catheter removal. Catheter dysfunction was not noted in any group and the rate of CRBI was extremely low.
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Affiliation(s)
- Tuncay Sahutoglu
- Department of Nephrology University of Health Sciences, Sanliurfa Mehmet Akif Inan Health Reasearch and Application Center, Sanliurfa, Turkey
| | - Osman Erinc
- Department of Internal Medicine, Sanliurfa, Turkey
| | | | - Meral Beyaz
- Department of Hemodialysis Nursing, Mehmet Akif Inan Education and Research Hospital, Sanliurfa, Turkey
| | - Aziz Batu
- Department of Internal Medicine, Sanliurfa, Turkey
| | - Kadri Atay
- Department of Gastroenterology, Mardin State Hospital, Mardin, Turkey
| | - Erman Ozdemir
- Department of Nephrology University of Health Sciences, Sanliurfa Mehmet Akif Inan Health Reasearch and Application Center, Sanliurfa, Turkey
| | - Aysegul Erinc
- Department of Pulmonology, Mehmet Akif Inan Education and Research Hospital, Sanliurfa, Turkey
| | - Elif Sahutoglu
- Department of Pulmonology, Sanliurfa Education and Research Hospital, Sanliurfa, Turkey
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Baumann Kreuziger L, Jaffray J, Carrier M. Epidemiology, diagnosis, prevention and treatment of catheter-related thrombosis in children and adults. Thromb Res 2017; 157:64-71. [DOI: 10.1016/j.thromres.2017.07.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 06/09/2017] [Accepted: 07/03/2017] [Indexed: 12/21/2022]
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19
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Ulloa-Ricardez A, Romero-Espinoza L, Estrada-Loza MDJ, González-Cabello HJ, Núñez-Enríquez JC. Risk Factors for Intracardiac Thrombosis in the Right Atrium and Superior Vena Cava in Critically Ill Neonates who Required the Installation of a Central Venous Catheter. Pediatr Neonatol 2016; 57:288-94. [PMID: 26747618 DOI: 10.1016/j.pedneo.2015.10.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 09/17/2015] [Accepted: 10/16/2015] [Indexed: 10/22/2022] Open
Abstract
BACKGROUND Central venous catheter (CVC) installation is essential for the treatment of critically ill neonates; however, it is associated with the development of neonatal intracardiac thrombosis, which is a complication that is associated with a poor prognosis. We aimed to identify specific risk factors for the development of intracardiac thrombosis in the right atrium (RA) and superior vena cava (SVC) related to the use of CVC in critically ill neonates. METHODS A case-control study was conducted at the tertiary referral neonatal intensive care unit of the Pediatric Hospital Siglo XXI in Mexico City, Mexico from 2008 to 2013. The included cases (n = 43) were de novo patients with intracardiac thrombosis in the RA and SVC diagnosed by echocardiography. The controls (n = 43) were neonates without intracardiac thrombosis or thrombosis at other sites. A logistic regression analysis was conducted, and odds ratios (ORs) and 95% confidence intervals (95% CIs) were calculated. RESULTS The independent risk factors for intracardiac thrombosis in the RA and SVC were the surgical cut-down insertion technique (OR = 2.98; 95% CI: 1.18-9.10), a maternal history of gestational diabetes/diabetes mellitus (OR = 10.64; 95% CI: 1.13-121.41), Staphylococcus epidermidis infection (OR = 7.09; 95% CI: 1.09-45.92), and CVC placement in the SVC (OR = 5.77; 95% CI: 1.10-30.18). CONCLUSION This study allowed us to identify several contributing factors to the development of intracardiac thrombosis in the RA and SVC related to the installation of a CVC in a subgroup of critically ill neonates. Multicenter and well-designed studies with a larger number of patients could help validate our findings and/or identify other risk factors that were not identified in the present study.
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Affiliation(s)
- Alfredo Ulloa-Ricardez
- Neonatal Intensive Care Unit, Pediatric Hospital, The Siglo XXI National Medical Center Mexican Institute of Social Security, Delegación Cuauhtémoc, Mexico City, Mexico
| | - Lizett Romero-Espinoza
- Neonatal Intensive Care Unit, Pediatric Hospital, The Siglo XXI National Medical Center Mexican Institute of Social Security, Delegación Cuauhtémoc, Mexico City, Mexico
| | - María de Jesús Estrada-Loza
- Department of Pediatric Cardiology, Pediatric Hospital, The Siglo XXI National Medical Center, Mexican Institute of Social Security, Delegación Cuauhtémoc, Mexico City, Mexico
| | - Héctor Jaime González-Cabello
- Neonatal Intensive Care Unit, Pediatric Hospital, The Siglo XXI National Medical Center Mexican Institute of Social Security, Delegación Cuauhtémoc, Mexico City, Mexico
| | - Juan Carlos Núñez-Enríquez
- Research Unit in Clinical Epidemiology, Pediatric Hospital, The Siglo XXI National Medical Center, Mexican Institute of Social Security, Delegación Cuauhtémoc, Mexico City, Mexico.
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20
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Barco S, Heuschen CBBCM, Salman B, Brekelmans MPA, Serlie MJ, Middeldorp S, Coppens M. Home parenteral nutrition-associated thromboembolic and bleeding events: results of a cohort study of 236 individuals. J Thromb Haemost 2016; 14:1364-73. [PMID: 27122107 DOI: 10.1111/jth.13351] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 04/22/2016] [Indexed: 12/12/2022]
Abstract
UNLABELLED Essentials Sparse or outdated studies focus on thrombotic and bleeding risk in home parenteral nutrition (HPN). 236 HPN patients followed at a single center for a total of 684 patient-years were evaluated. Rates of venous thrombosis and major bleeding, and prevalence of vena cava syndrome are provided. Anticoagulants might reduce thrombosis risk, but population-specific safety concerns remain. SUMMARY Background Home parenteral nutrition (HPN) is necessary for patients with intestinal failure. Recurrent catheter-related thrombosis (CRT) is common, leading to infectious complications, pulmonary embolism, vascular access loss and intestinal transplantation. The efficacy and safety of anticoagulants are unknown in this setting and based on sparse and low-quality observational data. Objectives Our aim was to estimate the incidence of thromboembolic, bleeding and anticoagulant-related complications in HPN patients, and evaluate risk factors for first venous thrombosis (VT). Methods This retrospective cohort study included all adult patients followed for long-term HPN at our center between 1986 and 2014. Primary outcomes were symptomatic objectively diagnosed VT, encompassing CRT and venous thromboembolism, and major bleeding. Secondary outcomes were vena cava syndrome and heparin-induced thrombocytopenia or hypersensitivity. Results A total of 236 patients were included (median HPN duration, 17 months) and 136 received anticoagulants at HPN onset (57.6%). Overall, the annual incidence of first VT was 11.4% (95% confidence interval [95% CI], 8.6-14.7%); VT was associated with a personal history of thrombosis (adjusted hazard ratio, 2.22; 95% CI, 1.06-4.64), whereas anticoagulation seemed to account only for a mild protection (adjusted hazard ratio, 0.72; 95% CI, 0.36-1.44). The annual incidence of major bleeding was 4.3% for patients on anticoagulants vs. 1.8% for those off anticoagulants. Vena cava syndrome developed in 20.7% of patients with VT. One patient had isolated heparin-induced thrombocytopenia (0.6%) and four had heparin hypersensitivity (2.5%). Conclusions Patients on HPN have a significant risk of venous thrombosis, major bleeding and vena cava syndrome. Anticoagulants might reduce thrombosis risk, but population-specific safety concerns remain.
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Affiliation(s)
- S Barco
- Department of Vascular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
- Center for Thrombosis and Hemostasis, Johannes Gutenberg University, University Medical Center Mainz, Mainz, Germany
| | - C B B C M Heuschen
- Department of Vascular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - B Salman
- Department of Vascular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - M P A Brekelmans
- Department of Vascular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - M J Serlie
- Department of Endocrinology and Metabolism, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - S Middeldorp
- Department of Vascular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - M Coppens
- Department of Vascular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
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21
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Ording AG, Nielsen ME, Smith AB, Horváth-Puhó E, Sørensen HT. Venous thromboembolism and effect of comorbidity in bladder cancer: A danish nationwide cohort study of 13,809 patients diagnosed between 1995 and 2011. Urol Oncol 2016; 34:292.e1-8. [DOI: 10.1016/j.urolonc.2016.02.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 01/07/2016] [Accepted: 02/08/2016] [Indexed: 11/30/2022]
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22
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Carter C, Bushwitz J, Gowan M, Pope H, Human T, Gibson G, Owen E, Hampton N, Whitman C. Clinical Experience With Pharmacological Venous Thromboembolism Prophylaxis in the Underweight and Critically Ill. Ann Pharmacother 2016; 50:832-9. [PMID: 27371544 DOI: 10.1177/1060028016657347] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND The optimal regimen for pharmacological prophylaxis of venous thromboembolism (VTE) in underweight, critically ill patients is unknown. OBJECTIVE To describe prescribing patterns for VTE prophylaxis in underweight (≤50 kg or body mass index ≤18.5 kg/m(2)), critically ill patients and identify the prevalence of VTE and bleeding. METHODS This was a retrospective cohort study that included patients who received standard- or reduced-dose VTE prophylaxis for ≥48 hours. RESULTS A total of 295 individuals were included in the study. The majority of underweight patients in this study (79.7%) received unfractionated heparin, 5000 units 3 times daily. No statistically significant difference in the prevalence of clinically relevant VTEs between the reduced- and standard-dose groups was observed (4.4% vs 5.6%, P = 1.00), but a higher proportion of bleeding events was identified within the standard-dose group (6.7% vs 11.2%, P = 0.4). CONCLUSIONS Empirical dose reductions of VTE prophylaxis are infrequently used in underweight, critically ill patients. Further studies need to be conducted that assess the safety and efficacy of reduced-dose VTE prophylactic regimens in this population to determine if acceptable efficacy can be achieved, with lower risks of bleeding.
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Affiliation(s)
- Christopher Carter
- Barnes-Jewish Hospital, St Louis, MO, USA SSM Health St Clare Hospital, Fenton, MO, USA
| | | | | | | | | | | | - Emily Owen
- Barnes-Jewish Hospital, St Louis, MO, USA
| | | | - Craig Whitman
- Temple University School of Pharmacy, Philadelphia, PA, USA
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Abstract
Catheter-related thrombosis is a relatively common complication of central venous catheter insertion. Central venous catheter use is ubiquitous in the critical care setting and often in patients with multiple risk factors for venous thromboembolism. With a trend towards increased use of peripherally inserted central catheters, the incidence of catheter-related thrombosis is likely to increase further. Despite the scale of the problem, there is a paucity of evidence-based guidelines concerning the management of patients with catheter-related thrombosis, particularly in critically unwell patients. This has led to heterogeneity in clinical practice. In this review, we describe the risk factors for developing catheter-related thrombosis and provide practical advice for clinicians on how to recognise, diagnose and treat this common problem.
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Affiliation(s)
- Caroline Wall
- Department of Haematology, Manchester Royal Infirmary, Manchester, UK
| | - John Moore
- Department of Critical Care, Manchester Royal Infirmary, Manchester, UK
| | - Jecko Thachil
- Department of Haematology, Manchester Royal Infirmary, Manchester, UK
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Galy A, Lepeule R, Goulenok T, Buzele R, de Lastours V, Fantin B. Presentation and impact of catheter-associated thrombosis in patients with infected long-term central venous catheters: a prospective bicentric observational study. Ann Med 2016; 48:182-9. [PMID: 27022769 DOI: 10.3109/07853890.2016.1154981] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Catheter-associated thrombosis (CAT) in patients with infected long-term central venous catheter (LTCVC) has been poorly studied. METHODS We prospectively included patients with infected LTCVC and collected clinical data. Doppler ultrasound was systematically performed to screen for CAT. Outcome (death or infection relapse) was evaluated 12 weeks after infection diagnosis. RESULTS 90 patients were included and CAT was diagnosed in 27 (30%). Local signs suggesting infection were more frequent in patients with CAT than without (11/27 versus 8/63, p = 0.03). Outcome was similar in patients with and without CAT. However, median duration of antimicrobials was longer (18 versus 14 days, p = 0.02), catheter removal tended to be more frequent (24/27 versus 46/63, p = 0.08), and anticoagulant therapy more often prescribed (17/27 versus 6/63, p < 0.01) in patients with CAT than without. Patients with occlusive thrombosis were more likely to have Staphylococcus aureus infections (4/7 versus 1/17, p = 0.02) and prolonged positivity of blood-cultures (3/7 versus 1/15, p = 0.02), than patients with non-occlusive thrombosis. CONCLUSION CAT is associated with local signs suggesting infection. A more aggressive treatment in CAT cases allowed a similar outcome at 12 weeks between patients with and without CAT. Occlusive thrombosis represented a subgroup of patients at risk of delayed clearance of bacteremia.
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Affiliation(s)
- Adrien Galy
- a Department of Internal Medicine , Assistance Publique-Hôpitaux De Paris, University Hospital Beaujon , Clichy , France
| | - Raphaël Lepeule
- b Antimicrobial Stewardship Team, Assistance Publique-Hôpitaux De Paris, University Hospital Henri Mondor , Créteil , France
| | - Tiphaine Goulenok
- a Department of Internal Medicine , Assistance Publique-Hôpitaux De Paris, University Hospital Beaujon , Clichy , France
| | - Rodolphe Buzele
- a Department of Internal Medicine , Assistance Publique-Hôpitaux De Paris, University Hospital Beaujon , Clichy , France
| | - Victoire de Lastours
- a Department of Internal Medicine , Assistance Publique-Hôpitaux De Paris, University Hospital Beaujon , Clichy , France
| | - Bruno Fantin
- a Department of Internal Medicine , Assistance Publique-Hôpitaux De Paris, University Hospital Beaujon , Clichy , France
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Sriskandarajah P, Webb K, Chisholm D, Raobaikady R, Davis K, Pepper N, Ethell ME, Potter MN, Shaw BE. Retrospective cohort analysis comparing the incidence of deep vein thromboses between peripherally-inserted and long-term skin tunneled venous catheters in hemato-oncology patients. Thromb J 2015; 13:21. [PMID: 26113804 PMCID: PMC4480444 DOI: 10.1186/s12959-015-0052-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 04/10/2015] [Indexed: 11/10/2022] Open
Abstract
Background The introduction of central venous catheters has advanced medical care, particularly in hemato-oncology. However these can be associated with an increased thrombotic risk. Previous studies have compared the rate of thrombotic events between peripherally- inserted (PICCs) and long term skin tunneled catheters (LTSTCs) noting fewer complications associated with the latter, though this has rarely translated into clinical practice. The objectives of our study was to compare the cumulative incidence of thrombotic events between peripherally-inserted and long term skin tunneled venous catheters. Patients/methods We performed a retrospective, single center cohort analysis of patients with hematological malignancies who had either a PICC or LTSTC line inserted between January 2010 through January 2013. Cumulative incidences of thrombotic events were compared between the two groups, and post-thrombotic complications were also examined. Results 346 patients had a PICC inserted with cumulative incidence of symptomatic thrombosis of 5.8%, while 237 patients had a LTSTC inserted with a cumulative incidence of 1.7% (p = 0.003). Post-thrombotic complication rates, particularly infection, were higher in the PICC group compared to the LTSTC group (p = 0.597). Conclusions Our study showed that the incidence of thrombotic events in hemato-oncology patients was significantly lower in those who had a LTSTC compared to PICC line. As the use of central venous lines increases in hemato-oncology patient care, a randomized trial comparing PICCs and LTSTCs is necessary to address which venous access is most appropriate in this cohort of patients, with minimal risk of morbidity and mortality.
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Affiliation(s)
- Priya Sriskandarajah
- Department of Haem-Oncology, Royal Marsden Hospital, Downs Road, Sutton, SM2 5PT UK
| | - Katharine Webb
- Department of Haem-Oncology, Royal Marsden Hospital, Downs Road, Sutton, SM2 5PT UK
| | - David Chisholm
- Department of Anesthetics, Royal Marsden Hospital, Downs Road, Sutton, SM2 5PT UK
| | - Ravi Raobaikady
- Department of Anesthetics, Royal Marsden Hospital, Downs Road, Sutton, SM2 5PT UK
| | - Kim Davis
- Department of Haem-Oncology, Royal Marsden Hospital, Downs Road, Sutton, SM2 5PT UK
| | - Natalie Pepper
- Department of Haem-Oncology, Royal Marsden Hospital, Downs Road, Sutton, SM2 5PT UK
| | - Mark E Ethell
- Department of Haem-Oncology, Royal Marsden Hospital, Downs Road, Sutton, SM2 5PT UK
| | - Mike N Potter
- Department of Haem-Oncology, Royal Marsden Hospital, Downs Road, Sutton, SM2 5PT UK
| | - Bronwen E Shaw
- Department of Haem-Oncology, Royal Marsden Hospital, Downs Road, Sutton, SM2 5PT UK
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Vepsäläinen K, Lassila R, Arola M, Lähteenmäki P, Möttönen M, Mäkipernaa A, Riikonen P. Complications associated with central venous access device in children with haemophilia: a nationwide multicentre study in Finland. Haemophilia 2015; 21:747-53. [DOI: 10.1111/hae.12665] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/09/2015] [Indexed: 01/05/2023]
Affiliation(s)
- K. Vepsäläinen
- Department of Pediatrics; Kuopio University Hospital; Kuopio Finland
| | - R. Lassila
- Coagulation Disorders Unit; Department of Hematology and Cancer Center; Helsinki University Central Hospital; University of Helsinki; Helsinki Finland
| | - M. Arola
- Department of Pediatrics; Tampere University Central Hospital; Tampere Finland
| | - P. Lähteenmäki
- Department of Pediatrics and Adolescent Medicine; Turku University Central Hospital; Turku Finland
| | - M. Möttönen
- Department of Pediatrics and Adolescence; Oulu University Hospital; Oulu Finland
| | - A. Mäkipernaa
- Coagulation Disorders Unit; Department of Hematology and Cancer Center; Helsinki University Central Hospital; University of Helsinki; Helsinki Finland
- Children's Hospital; Helsinki University Central Hospital; Helsinki Finland
| | - P. Riikonen
- Department of Pediatrics; Kuopio University Hospital; Kuopio Finland
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27
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Geerts W. Central venous catheter-related thrombosis. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2014; 2014:306-311. [PMID: 25696870 DOI: 10.1182/asheducation-2014.1.306] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Thrombotic complications associated with the use of central venous catheters (CVCs) are common and lead to distressing patient symptoms, catheter dysfunction, increased risk of infections, long-term central venous stenosis, and considerable costs of care. Risk factors for catheter-related thrombosis include use of larger, multilumen, and peripherally inserted catheters in patients with cancer receiving chemotherapy. Symptomatic catheter-related thrombosis is treated with anticoagulation, generally without removing the catheter. The intensity and duration of anticoagulation depend on the extent of thrombosis, risk of bleeding, and need for continued use of a CVC. To date, the clinical benefit of prophylactic doses of anticoagulant has been disappointing and these agents are not used routinely for this purpose. This chapter focuses on recent evidence, remaining controversies, and practical approaches to reducing the burden of thrombosis associated with CVCs.
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Affiliation(s)
- William Geerts
- Thromboembolism Program, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
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28
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Vidal E, Sharathkumar A, Glover J, Faustino EVS. Central venous catheter-related thrombosis and thromboprophylaxis in children: a systematic review and meta-analysis. J Thromb Haemost 2014; 12:1096-109. [PMID: 24801495 PMCID: PMC4107177 DOI: 10.1111/jth.12598] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 04/29/2014] [Indexed: 12/21/2022]
Abstract
OBJECTIVES In preparation for a pediatric randomized controlled trial on thromboprophylaxis, we determined the frequency of catheter-related thrombosis in children. We also systematically reviewed the pediatric trials on thromboprophylaxis to evaluate its efficacy and to identify possible pitfalls in the conduct of these trials. PATIENTS/METHODS We searched MEDLINE, EMBASE, Web of Science and the Cochrane Central Register for Controlled Trials for articles published until December 2013. We included cohort studies and trials on patients aged 0-18 years with central venous catheters who underwent active surveillance for thrombosis with radiologic imaging. We estimated the pooled frequency of thrombosis and the pooled risk ratio (RR) with thromboprophylaxis by using a random effects model. RESULTS From 2651 articles identified, we analyzed 37 articles with 3128 patients. The pooled frequency of thrombosis was 0.20 (95% confidence interval [CI] 0.16-0.24). In 10 trials, we did not find evidence that heparin-bonded catheters (RR 0.34; 95%CI 0.01-7.68), unfractionated heparin (RR 0.93; 95% CI 0.57-1.51), low molecular weight heparin (RR 1.13; 95% CI 0.51-2.50), warfarin (RR 0.85; 95%CI 0.34-2.17), antithrombin concentrate (RR 0.76; 95% CI 0.38-1.55) or nitroglycerin (RR 1.53; 95%CI 0.57-4.10) reduced the risk of thrombosis. Most of the trials were either not powered for thrombosis or were powered to detect large, probably unachievable, reductions in thrombosis. Missing data on thrombosis also limited these trials. CONCLUSIONS Catheter-related thrombosis is common in children. An adequately powered multicenter trial that can detect a modest, clinically significant reduction in thrombosis is critically needed. Missing outcome data should be minimized in this trial.
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Affiliation(s)
- E Vidal
- Department of Structural and Cellular Biology, Tulane University School of Medicine, New Orleans, LA, USA
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29
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Piran S, Ngo V, McDiarmid S, Le Gal G, Petrcich W, Carrier M. Incidence and risk factors of symptomatic venous thromboembolism related to implanted ports in cancer patients. Thromb Res 2014; 133:30-3. [DOI: 10.1016/j.thromres.2013.10.026] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 09/18/2013] [Accepted: 10/17/2013] [Indexed: 12/21/2022]
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30
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Bachand MP, Hébuterne X, Schneider SM. Les thromboses veineuses en nutrition parentérale à domicile : de la prévention au traitement. NUTR CLIN METAB 2013. [DOI: 10.1016/j.nupar.2013.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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31
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Richters A, van Vliet M, Peer PGM, Verweij PE, Laros-van Gorkom BAP, Blijlevens NMA, Donnelly JP, van der Velden WJFM. Incidence of and risk factors for persistent gram-positive bacteraemia and catheter-related thrombosis in haematopoietic stem cell transplantation. Bone Marrow Transplant 2013; 49:264-9. [DOI: 10.1038/bmt.2013.172] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 09/04/2013] [Accepted: 09/18/2013] [Indexed: 11/09/2022]
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32
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Del Principe MI, Buccisano F, Maurillo L, Venditti D, Cefalo M, Sarlo C, Di Caprio L, Di Veroli A, Nasso D, Ceresoli E, Postorino M, Di Piazza F, Colandrea G, Conti F, Del Poeta G, Amadori S, Venditti A. Infections increase the risk of central venous catheter-related thrombosis in adult acute myeloid leukemia. Thromb Res 2013; 132:511-4. [PMID: 24090605 DOI: 10.1016/j.thromres.2013.08.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 08/10/2013] [Accepted: 08/12/2013] [Indexed: 10/26/2022]
Abstract
INTRODUCTION Central venous catheters (CVC) related thrombosis (CRT) represents a well known complication in patients with acute myeloid leukemia (AML) receiving intensive chemotherapy but the efficacy of antithrombotic prophylaxis still remains controversial. PATIENTS AND METHODS We analyzed 71 consecutive AML patients whose CVC was inserted before each chemotherapy cycle for an overall number of 106 CVC placements. In 47/106 insertions, a prophylaxis with 100 IU/kg/day low molecular weight heparin (LMWH) was administered for 7 days after CVC insertion and additional 7 after CVC removal. This unconventional dose of LMWH, although higher than usual, appeared adequate for a short-course approach. LMWH was delivered regardless of the platelet (PLT) count once provided that it should have been maintained above 20 x 10(9)/L by transfusions. RESULTS Of 106 insertions, we observed 19 (18%) episodes of CRT, 58 (54%) of sepsis and 50 (47%) infections of CVC-exit site with no difference between LMWH and no-LMWH group. Occurrence of CRT was significantly associated with CVC-exit site infections (14/19, p=0.01) and sepsis (16/19, p=0.005) with no difference between LMWH and no-LMWH group. In multivariate analysis, both CVC-exit site infections and sepsis were confirmed to be independent risk factors for CRT development. CONCLUSION Our retrospective study, although based on a small sample size, suggests that the occurrence of CVC-exit site infections and neutropenic sepsis following chemotherapy significantly increases the risk of CRT in AML, independently from the use of LMWH prophylaxis.
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Affiliation(s)
- Maria Ilaria Del Principe
- Cattedra di Ematologia, Dipartimento di Biomedicina e Prevenzione, Università Tor Vergata, Roma, Italia.
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Abstract
Central venous catheters are commonly used in haematology departments for the administration of chemotherapy, blood products and parenteral nutrition in patients with haematological malignancy. Thrombosis is a recognized complication of such devices especially in oncology patients. Catheter-related thrombi (CRT) may lead to pulmonary embolism and infection, as well as catheter failure and potential delays in treatment. The vast majority of CRT are asymptomatic, thus a high index of suspicion is required in making the diagnosis. Doppler ultrasound or venography may be employed to identify CRT. Once confirmed, the initiation of treatment is a balance between the risks of anticoagulation against potential complications of CRT. A number of risk factors for CRT are discussed along with an overview of catheter types, their appropriate choice and intravascular positioning.
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Affiliation(s)
- Jim Murray
- Haemophilia and Thrombosis Centre, University Hospital of Wales, Cardiff, UK
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