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Karkhah S, Pourshaikhian M, Maroufizadeh S, Ghorbani Vajargah P, Aghajanzadeh P, Osuji J, Moghadamnia MT. Effect of needles distance of arteriovenous fistula cannulation on hemodialysis adequacy based on KT/V: a randomized controlled trial. Ann Med Surg (Lond) 2024; 86:2739-2744. [PMID: 38694348 PMCID: PMC11060320 DOI: 10.1097/ms9.0000000000001966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 03/04/2024] [Indexed: 05/04/2024] Open
Abstract
Background This study aims to assess the effect of needle distance of arteriovenous fistula (AVF) cannulation on haemodialysis adequacy based on KT/V. Materials and methods This study was a parallel-group, randomized controlled trial. Patients who met the inclusion criteria were divided into two groups with 3 and 6 cm needle distances using block randomization. Data acquisition transpired through a comprehensive checklist encompassing demographic variables such as age and sex, alongside clinical metrics comprising actual weight, dry weight, average dialysis duration, fistula longevity, and KT/V rate. Results A total of 42 haemodialysis patients were enroled in this investigation, with 21 allocated to the 3 cm needle distance group and another 21 to the 6 cm needle distance group. The mean post-haemodialysis KT/V values for the 3 cm and 6 cm needle distance groups were 1.25 (SD=0.25) and 1.42 (SD=0.24), respectively, demonstrating a statistically significant difference (P<0.001). While there was no significant difference in the average pre-haemodialysis and post-haemodialysis KT/V values within the 3 cm needle distance group (t=1.93, P=0.068), the corresponding values for the 6 cm needle distance group exhibited a notable discrepancy (t=9.66, P<0.001). Conclusion In general, a needle distance of 6 cm between arteriovenous points yielded superior enhancements in dialysis adequacy compared to a 3 cm needle distance following haemodialysis. Consequently, health administrators and policymakers may consider instituting efficacious interventions to scrutinize the care and therapeutic protocols for haemodialysis patients, involving the development of policies and applications.
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Affiliation(s)
- Samad Karkhah
- Department of Medical-Surgical Nursing, School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran
| | - Majid Pourshaikhian
- Department of Prehospital Emergency Medicine, School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran
| | - Saman Maroufizadeh
- Department of Biostatistics, School of Health, Guilan University of Medical Sciences, Rasht, Iran
| | - Pooyan Ghorbani Vajargah
- Department of Medical-Surgical Nursing, School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran
| | - Pegah Aghajanzadeh
- Urology Research Center, Razi Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Joseph Osuji
- School of Nursing and Midwifery, Faculty of Health, Community, and Education, Mount Royal University, Calgary, Ab, Canada
| | - Mohammad Taghi Moghadamnia
- Department of Medical-Surgical Nursing, School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran
- Department of Prehospital Emergency Medicine, School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran
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Watson C, Saaid H, Vedula V, Cardenas JC, Henke PK, Nicoud F, Xu XY, Hunt BJ, Manning KB. Venous Thromboembolism: Review of Clinical Challenges, Biology, Assessment, Treatment, and Modeling. Ann Biomed Eng 2024; 52:467-486. [PMID: 37914979 DOI: 10.1007/s10439-023-03390-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 10/17/2023] [Indexed: 11/03/2023]
Abstract
Venous thromboembolism (VTE) is a massive clinical challenge, annually affecting millions of patients globally. VTE is a particularly consequential pathology, as incidence is correlated with extremely common risk factors, and a large cohort of patients experience recurrent VTE after initial intervention. Altered hemodynamics, hypercoagulability, and damaged vascular tissue cause deep-vein thrombosis and pulmonary embolism, the two permutations of VTE. Venous valves have been identified as likely locations for initial blood clot formation, but the exact pathway by which thrombosis occurs in this environment is not entirely clear. Several risk factors are known to increase the likelihood of VTE, particularly those that increase inflammation and coagulability, increase venous resistance, and damage the endothelial lining. While these risk factors are useful as predictive tools, VTE diagnosis prior to presentation of outward symptoms is difficult, chiefly due to challenges in successfully imaging deep-vein thrombi. Clinically, VTE can be managed by anticoagulants or mechanical intervention. Recently, direct oral anticoagulants and catheter-directed thrombolysis have emerged as leading tools in resolution of venous thrombosis. While a satisfactory VTE model has yet to be developed, recent strides have been made in advancing in silico models of venous hemodynamics, hemorheology, fluid-structure interaction, and clot growth. These models are often guided by imaging-informed boundary conditions or inspired by benchtop animal models. These gaps in knowledge are critical targets to address necessary improvements in prediction and diagnosis, clinical management, and VTE experimental and computational models.
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Affiliation(s)
- Connor Watson
- Department of Biomedical Engineering, The Pennsylvania State University, 122 Chemical and Biomedical Engineering Building, University Park, PA, 16802-4400, USA
| | - Hicham Saaid
- Department of Biomedical Engineering, The Pennsylvania State University, 122 Chemical and Biomedical Engineering Building, University Park, PA, 16802-4400, USA
| | - Vijay Vedula
- Department of Mechanical Engineering, Fu Foundation School of Engineering and Applied Science, Columbia University, New York, NY, USA
| | - Jessica C Cardenas
- Department of Surgery and the Center for Translational Injury Research, McGovern Medical School, University of Texas Health Science Center, Houston, TX, USA
| | - Peter K Henke
- Section of Vascular Surgery, Department of Surgery, University of Michigan Health System, Ann Arbor, MI, USA
| | - Franck Nicoud
- CNRS, IMAG, Université de Montpellier, Montpellier, France
- Institut Universitaire de France, Paris, France
| | - Xiao Yun Xu
- Department of Chemical Engineering, Imperial College London, London, UK
| | - Beverley J Hunt
- Department of Thrombosis and Haemostasis, King's College, London, UK
- Thrombosis and Haemophilia Centre, Guy's & St Thomas' NHS Trust, London, UK
| | - Keefe B Manning
- Department of Biomedical Engineering, The Pennsylvania State University, 122 Chemical and Biomedical Engineering Building, University Park, PA, 16802-4400, USA.
- Department of Surgery, Penn State Hershey Medical Center, Hershey, PA, USA.
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Kingsmore D, Jackson A, Stevenson K. A critical review of surgical strategies to minimise venous stenosis in arteriovenous grafts. J Vasc Access 2021; 24:11297298211060944. [PMID: 34847754 DOI: 10.1177/11297298211060944] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
It is inevitable that complications arising from surgical procedures are ascribed to surgical technique, and this applies to venous stenosis (VS) in arteriovenous grafts. However, despite a wide range of cellular studies, computer modelling, observational series and clinical trials, there remains uncertainty on whether surgical technique contributes to VS. This article reviews evidence from basic science, fluid dynamics and clinical data to try and rationalise the main surgical options to modify the occurrence of venous stenosis. There is sufficient data from diverse sources to make recommendations on clinical practice (size of target vein, shape of anastomosis, angle of approach, distance from venous needling, trauma to the target vein) whilst at the same time this emphasises the need to carefully report the practical aspects of surgical technique in future clinical trials.
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Affiliation(s)
- David Kingsmore
- Department of Vascular Surgery, Queen Elizabeth University Hospital Trust, Glasgow, UK
- Department of Renal Transplantation, Queen Elizabeth University Hospital Trust, Glasgow, UK
| | - Andrew Jackson
- Department of Renal Transplantation, Queen Elizabeth University Hospital Trust, Glasgow, UK
| | - Karen Stevenson
- Department of Renal Transplantation, Queen Elizabeth University Hospital Trust, Glasgow, UK
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Karkhah S, Ghazanfari MJ, Emami Zeydi A. What is the best between needles distance and direction for arteriovenous fistula cannulation in hemodialysis patients? An important yet challenging issue. J Vasc Access 2021; 23:490-491. [PMID: 33706608 DOI: 10.1177/11297298211000878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Samad Karkhah
- Department of Medical-Surgical Nursing, School of Nursing and Midwifery, Guilan University of Medical Sciences, Rasht, Iran
| | - Mohammad Javad Ghazanfari
- Department of Medical-Surgical Nursing, School of Nursing and Midwifery, Kashan University of Medical Sciences, Kashan, Iran
| | - Amir Emami Zeydi
- Department of Medical-Surgical Nursing, Nasibeh School of Nursing and Midwifery, Mazandaran University of Medical Sciences, Sari, Iran
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Sun CY, Zhou LF, Song L, Lan LJ, Han XW, Zhang GR, Mo YW, Zheng SQ, Chen YG, Fu X. How to Reduce the Risk of Arteriovenous Fistula Dysfunction by Observing Prepump Arterial Pressure during Hemodialysis: A Multicenter Retrospective Study. Blood Purif 2021; 50:800-807. [PMID: 33530090 DOI: 10.1159/000512352] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 10/14/2020] [Indexed: 11/19/2022]
Abstract
OBJECTIVE Prepump arterial (Pa) pressure indicates the ease or difficulty with which the blood pump can draw blood from the vascular access (VA) during hemodialysis. Some studies have suggested that the absolute value of the Pa pressure to the extracorporeal blood pump flow (Qb) ratio set on the machine (|Pa/Qb|) can reflect the dysfunction of VA. This study was conducted to explore the impact of arteriovenous fistula (AVF) dysfunction and to explore the clinical reference value of |Pa/Qb|. METHODS We retrospectively identified adults who underwent hemodialysis at 3 hospitals. Data were acquired from electronic health records. We evaluated the pattern of the association between |Pa/Qb| and AVF dysfunction during 1 year using a Cox proportional hazards regression model with restricted cubic splines. Then, the patients were grouped based on the results, and hazard ratios were compared for different intervals of |Pa/Qb|. RESULTS A total of 490 patients were analyzed, with an average age of 55 (44, 66) years. There were a total of 85 cases of AVF dysfunction, of which 50 cases were stenosis and 35 cases were thrombosis. There was a U-shaped association between |Pa/Qb| and the risk of AVF dysfunction (p for nonlinearity <0.001). |Pa/Qb| values <0.30 and >0.52 increased the risk of AVF dysfunction. Compared with the group with a |Pa/Qb| value between 0.30 and 0.52, the groups with |Pa/Qb| <0.30 and |Pa/Qb| >0.52 had a 4.04-fold (p = 0.002) and 3.41-fold (p < 0.001) greater risk of AVF dysfunction, respectively. CONCLUSIONS The appropriate range of |Pa/Qb| is between 0.30 and 0.52. When |Pa/Qb| is <0.30 or >0.52, the patient's AVF function or Qb setting should be reevaluated to prevent subsequent failure.
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Affiliation(s)
- Chun-Yan Sun
- Division of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,School of Nursing, Southern Medical University, Guangzhou, China
| | - Li-Fang Zhou
- Division of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Li Song
- Division of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Li-Juan Lan
- Blood Purification Center, Shenzhen People's Hospital, Shenzhen, China
| | - Xiao-Wei Han
- Division of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China
| | - Guan-Rong Zhang
- Information and Statistical Center, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Ya-Wen Mo
- Division of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Shu-Qian Zheng
- Division of Nephrology, Guangzhou Nansha Central Hospital, Guangzhou, China
| | - Ying-Gui Chen
- Division of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Xia Fu
- Division of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China, .,School of Nursing, Southern Medical University, Guangzhou, China,
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