The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform
John S Lane - One of the best experts on this subject based on the ideXlab platform.
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estimation of Brachial Artery volume flow by duplex ultrasound imaging predicts dialysis access maturation
Journal of Vascular Surgery, 2015Co-Authors: Dennis F Bandyk, Kelley D Hodgkissharlow, Andrew Barleben, John S LaneAbstract:Objective This study validated duplex ultrasound measurement of Brachial Artery volume flow (VF) as predictor of dialysis access flow maturation and successful hemodialysis. Methods Duplex ultrasound was used to image upper extremity dialysis access anatomy and estimate access VF within 1 to 2 weeks of the procedure. Correlation of Brachial Artery VF with dialysis access conduit VF was performed using a standardized duplex testing protocol in 75 patients. The hemodynamic data were used to develop Brachial Artery flow velocity criteria (peak systolic velocity and end-diastolic velocity) predictive of three VF categories: low ( 800 mL/min). Brachial Artery VF was then measured in 148 patients after a primary (n = 86) or revised (n = 62) upper extremity dialysis access procedure, and the VF category correlated with access maturation or need for revision before hemodialysis usage. Access maturation was conferred when Brachial Artery VF was >600 mL/min and conduit imaging indicated successful cannulation based on anatomic criteria of conduit diameter >5 mm and skin depth Results Measurements of VF from the Brachial Artery and access conduit demonstrated a high degree of correlation ( R 2 = 0.805) for autogenous vein (n = 45; R 2 = 0.87) and bridge graft (n = 30; R 2 = 0.78) dialysis accesses. Access VF of >800 mL/min was predicted when the Brachial Artery lumen diameter was >4.5 mm, peak systolic velocity was >150 cm/s, and the diastolic-to-systolic velocity ratio was >0.4. Brachial Artery velocity spectra indicating VF P 800 mL/min. Duplex testing to estimate Brachial Artery VF and assess the conduit for ease of cannulation can be performed in 5 minutes during the initial postoperative vascular clinic evaluation. Conclusions Estimation of Brachial Artery VF using the duplex ultrasound, termed the "Fast, 5-min Dialysis Duplex Scan," facilitates patient evaluation after new or revised upper extremity dialysis access procedures. Brachial Artery VF correlates with access VF measurements and has the advantage of being easier to perform and applicable for forearm and also arm dialysis access. When Brachial Artery velocity spectra criteria confirm a VF >800 mL/min, flow maturation and successful hemodialysis are predicted if anatomic criteria for conduit cannulation are also present.
Eva Lonn - One of the best experts on this subject based on the ideXlab platform.
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relationship between carotid Artery intima media thickness and Brachial Artery flow mediated dilation in middle aged healthy men
Journal of the American College of Cardiology, 2005Co-Authors: Raymond T Yan, Todd J Anderson, Francois Charbonneau, Lawrence M Title, Subodh Verma, Eva LonnAbstract:OBJECTIVES We aimed to determine the relationship between carotid intima-media thickness (IMT) and Brachial Artery flow-mediated dilation (FMD) in healthy middle-age men. BACKGROUND Carotid IMT and Brachial Artery FMD are frequently used as surrogate measures of subclinical atherosclerosis. Whereas carotid IMT identifies early structural abnormalities, Brachial Artery FMD, considered a bioassay of endothelial function, measures functional vascular integrity. The relationship between carotid IMT and Brachial Artery FMD has not been well studied. METHODS We measured traditional risk factors, carotid IMT, and Brachial Artery FMD in 1,578 middle-aged men without known cardiovascular disease and analyzed the relationship between carotid IMT and Brachial FMD. RESULTS Carotid IMT correlated with age, systolic blood pressure, body mass index, fasting glucose, total and low-density lipoprotein (LDL) cholesterol, and with the overall Framingham risk score (p < 0.001 for all), whereas impaired Brachial Artery FMD correlated with systolic and diastolic blood pressure (p < 0.01). No relationship was observed between carotid IMT and Brachial Artery FMD for the entire cohort (r = -0.006, p = 0.82) and in subgroups defined by traditional risk factors or by quintiles of carotid IMT and Brachial FMD. CONCLUSIONS In middle-aged healthy men, there is no significant correlation between carotid IMT and Brachial Artery FMD. This finding suggests that these are unique, independent surrogates that measure different aspects and stages of early atherosclerosis. Further studies are needed to define their role in clinical research and in cardiovascular risk assessment.
Dennis F Bandyk - One of the best experts on this subject based on the ideXlab platform.
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estimation of Brachial Artery volume flow by duplex ultrasound imaging predicts dialysis access maturation
Journal of Vascular Surgery, 2015Co-Authors: Dennis F Bandyk, Kelley D Hodgkissharlow, Andrew Barleben, John S LaneAbstract:Objective This study validated duplex ultrasound measurement of Brachial Artery volume flow (VF) as predictor of dialysis access flow maturation and successful hemodialysis. Methods Duplex ultrasound was used to image upper extremity dialysis access anatomy and estimate access VF within 1 to 2 weeks of the procedure. Correlation of Brachial Artery VF with dialysis access conduit VF was performed using a standardized duplex testing protocol in 75 patients. The hemodynamic data were used to develop Brachial Artery flow velocity criteria (peak systolic velocity and end-diastolic velocity) predictive of three VF categories: low ( 800 mL/min). Brachial Artery VF was then measured in 148 patients after a primary (n = 86) or revised (n = 62) upper extremity dialysis access procedure, and the VF category correlated with access maturation or need for revision before hemodialysis usage. Access maturation was conferred when Brachial Artery VF was >600 mL/min and conduit imaging indicated successful cannulation based on anatomic criteria of conduit diameter >5 mm and skin depth Results Measurements of VF from the Brachial Artery and access conduit demonstrated a high degree of correlation ( R 2 = 0.805) for autogenous vein (n = 45; R 2 = 0.87) and bridge graft (n = 30; R 2 = 0.78) dialysis accesses. Access VF of >800 mL/min was predicted when the Brachial Artery lumen diameter was >4.5 mm, peak systolic velocity was >150 cm/s, and the diastolic-to-systolic velocity ratio was >0.4. Brachial Artery velocity spectra indicating VF P 800 mL/min. Duplex testing to estimate Brachial Artery VF and assess the conduit for ease of cannulation can be performed in 5 minutes during the initial postoperative vascular clinic evaluation. Conclusions Estimation of Brachial Artery VF using the duplex ultrasound, termed the "Fast, 5-min Dialysis Duplex Scan," facilitates patient evaluation after new or revised upper extremity dialysis access procedures. Brachial Artery VF correlates with access VF measurements and has the advantage of being easier to perform and applicable for forearm and also arm dialysis access. When Brachial Artery velocity spectra criteria confirm a VF >800 mL/min, flow maturation and successful hemodialysis are predicted if anatomic criteria for conduit cannulation are also present.
J.c.l. Wong - One of the best experts on this subject based on the ideXlab platform.
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True Brachial Artery Aneurysm: A Rarity☆
Ejves Extra, 2012Co-Authors: M.t. Clarke, P.w. Waterland, S.s. Bahia, J.r. Asquith, A.d. Pherwani, J.c.l. WongAbstract:Introduction: Brachial Artery aneurysms can occur secondary to trauma and previous arteriovenous fistulae. True Brachial Artery aneurysms are rare. We describe a case and review the limited literature. Report: A 71-year-old man was found to have a large, left-sided true Brachial Artery aneurysm causing ischaemic symptoms distally. He underwent a successful surgical repair using a reversed basilic vein interposition graft. Discussion: Prompt diagnosis and treatment of true Brachial Artery aneurysms are important to prevent hand ischaemia.
Rajan Kumar Singla - One of the best experts on this subject based on the ideXlab platform.
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Superficial Brachial Artery with its high division.
Journal of Nepal Medical Association, 2012Co-Authors: Rajan Kumar Singla, Rohit Sharma, T SharmaAbstract:The upper extremity arterial system shows a large number of variations attributed to the complex and multiple sites of their embryonic development. It is important to be aware of arterial variations in this region because upper extremity is a frequent site of injury. Moreover, Brachial Artery is of significance in cardiac catheterization for angioplasty, pedicle flaps, or arterial grafting. Accurate knowledge and relationships of major arterial conduits and their variational patterns is important in reparative surgery in the arm, forearm and hand. One such variation is superficial Brachial Artery with prevalence rate of 0.2-25%. In this report, the Brachial Artery emanated normally but coursed superficial to the median nerve and about five cm above the intercondylar line, bifurcated into its terminal branches i.e. radial and ulnar Artery.
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Bilateral superficial Brachial Artery - a case report
International Journal of Anatomical Variations, 2011Co-Authors: Neelamjit Kaur, Patnaik V. V. Gopichand, Rajan Kumar SinglaAbstract:Though variations in the arterial pattern of upper limb are fairly common, a bilateral presentation as encountered in this case, i.e. superficial Brachial Artery seen bilaterally in an adult female cadaver is extremely rare. Its origin, course and termination were different in both the limbs. On the left side, the Brachial Artery in the middle 1/3rd of arm, coursed superficial to the median nerve and on the right side it divided in upper 1/3rd of arm into superficial and deep arteries. Former coursed superficial to median nerve and terminated in the cubital fossa by dividing into radial and ulnar Artery while the latter coursed deep to median nerve and continued as common interosseous Artery. Superficial Brachial Artery is reported earlier by different authors in frequency range of 0.2–25%, but mostly unilaterally. Further ontogeny and clinical implications of the variant are explained in detail.
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Bilateral superficial Brachial Artery.
Kathmandu University Medical Journal, 2010Co-Authors: T Sharma, Rajan Kumar Singla, K SachdevaAbstract:Variations of the upper limb arterial system are well documented. Accurate knowledge of the normal and variant arterial anatomy of the axillary Artery is important for clinical procedures and vascular radiology. In this article, a rare bilateral variation of superficial Brachial Artery is being reported. The axillary Artery on both sides divided in its third part into a superficial Brachial Artery passing superficial to the lateral root of median nerve and Brachial Artery proper. The former terminated in the cubital fossa by dividing into ulnar and radial arteries while the later descended deep to the medial root of median nerve and gave anterior and posterior circumflex humeral branches of axillary Artery and profunda brachii of Brachial Artery. Then it terminated by giving twigs to muscles of arm. Earlier superficial Brachial Artery is reported with a prevalence rate varying from 0.2 - 25 % but a bilateral variation is extremely rare. Further its ontogeny and clinical implications are discussed in detail. Key words: Superficial Brachial Artery; Brachial Artery; Axillary Artery DOI: 10.3126/kumj.v7i4.2768 Kathmandu University Medical Journal (2009) Vol.7, No.4 Issue 28, 426-428
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Bilateral superficial Brachial Artery.
Kathmandu University medical journal (KUMJ), 2009Co-Authors: T Sharma, Rajan Kumar Singla, K SachdevaAbstract:Variations of the upper limb arterial system are well documented. Accurate knowledge of the normal and variant arterial anatomy of the axillary Artery is important for clinical procedures and vascular radiology. In this article, a rare bilateral variation of superficial Brachial Artery is being reported. The axillary Artery on both sides divided in its third part into a superficial Brachial Artery passing superficial to the lateral root of median nerve and Brachial Artery proper. The former terminated in the cubital fossa by dividing into ulnar and radial arteries while the later descended deep to the medial root of median nerve and gave anterior and posterior circumflex humeral branches of axillary Artery and profunda brachii of Brachial Artery. Then it terminated by giving twigs to muscles of arm. Earlier superficial Brachial Artery is reported with a prevalence rate varying from 0.2-25 % but a bilateral variation is extremely rare. Further its ontogeny and clinical implications are discussed in detail.