نتایج جستجو برای: anastomosis and graft angle

تعداد نتایج: 16862941  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2011
majid ahmadlouie darab farzan ghalichi,

in this theoretical study, the effect of various types of bypass graft angles on the flow field, has been investigated specially on the temporal wall shear stress (wss) on the toe, heel and some locations on the bed of the left anterior descending (lad) artery at the anastomoses areas in the aorto-coronary (ac) and coronary-coronary (cc) bypasses. flow fields in both bypasses with angles of 20º...

Farzan Ghalichi,, Majid Ahmadlouie Darab

In this theoretical study, the effect of various types of bypass graft angles on the flow field, has been investigated specially on the temporal Wall Shear Stress (WSS) on the toe, heel and some locations on the bed of the Left Anterior Descending (LAD) artery at the anastomoses areas in the Aorto-Coronary (AC) and Coronary-Coronary (CC) bypasses. Flow fields in both bypasses with angles of...

Journal: :General thoracic and cardiovascular surgery 2009
Takeshiro Fujii Yoshinori Watanabe Noritsugu Shiono Tsukasa Ozawa Satoshi Hamada Hiroshi Masuhara Chikao Teramoto Masanori Hara Nobuya Koyama

OBJECTIVE The use of automatic anastomotic devices in coronary artery bypass grafting surgery is associated with lower patency rates in comparison to conventional anastomosis methods. This is thought to be caused by graft curvature occurring after closing of the chest wall. METHODS We evaluated 39 grafts in 28 patients who underwent off-pump coronary artery bypass surgery using the PAS-Port. ...

Journal: :Applied sciences 2021

Numerical analysis was performed for the effect of venous anastomosis angle in a forearm arteriovenous graft hemodialysis using multiphase blood model. The geometry vessel generated based on patient-computed tomography data. angles were set at 15°, 30°, and 45°. hematocrit 34%, 45%, 58%. larger angle, high wall shear stress area >11 Pa, increases to side vein away from site. Further, relativ...

Journal: :Annals of thoracic and cardiovascular surgery : official journal of the Association of Thoracic and Cardiovascular Surgeons of Asia 2015
Muneyasu Kawasaki Takeshiro Fujii Masanori Hara Yuki Sasaki Tomoyuki Katayanagi Shinnosuke Okuma Yoshinori Watanabe

PURPOSE We examined grafts employing for morphological analysis of early and long-term results on proximal anastomosis with the PAS-Port(®). METHODS One hundred and four patients treated by OPCAB with PAS-Port(®) were performed postoperative MDCT. Morphological evaluation of the proximal anastomotic region was classified into three groups (A; graft was anastomosed almost perpendicularly to th...

برزگرنژاد , ایوب, زرگرشوشتری , محمدعلی, سلیمانی , جواد, شاهرخ , حسین, کمالی , کوشا,

Background and purpose:We evaluated outcome of transplantation in donors MRAs that underwent multiple anastomosis in recipient, according to graft function, survey of graft and recipient, hypertension before and after transplantation, and surgical complications, comparable with single renal artery and MRA that was converted to a single artery before transplantation. Materials and methods:In ...

2010
Sheau Fung Sia Yi Qian Wataru Matsuda Alberto Avolio Michael Kerin Morgan

Computational fluid dynamics(CFD) techniques were used to investigate the hemodynamic effect on EC-IC brain bypass. Local hemodynamic factors at the vascular anastomosis sites have long been thought to play an important role in the platelet activation, growth of intimal hyperplasia and thrombosis of brain bypass anastomosis and hence, affecting graft longevity. In this study, the medical imagin...

2014
Ji-Hong Wang Wei Liu Xin Du Chang-Sheng Ma Xue-Si Wu

OBJECTIVES To investigate the procedure characteristics and long term follow-up of percutaneous coronary intervention (PCI) for saphaneous vein graft (SVG) lesions in the elderly patients. METHODS From December 2005 to December 2011, 84 graft lesions were treated percutaneously. Seventeen were located at proximal anastomosis, 48 were located at SVG body, 19 were located at distal anastomosis....

2015
Toshihito Gomibuchi Tamaki Takano Yuko Wada Takamitsu Terasaki Tatsuichiro Seto Daisuke Fukui

BACKGROUND Pseudoaneurysm of graft-graft anastomosis is an extremely rare but potentially fatal complication after thoracic aorta replacement with a prosthetic graft. We report a case of pseudoaneurysm at the graft-graft anastomosis of a hand-sewn branched graft. CASE PRESENTATION A 65-year-old man underwent total arch replacement with a hand-sewn branched graft for Stanford type A acute aort...

2002
Piergiorgio Tozzi Antonio F. Corno Ludwig K. von Segesser Alexis Carrel

Surgical environment is becoming increasingly challenging for the cardiac surgeon since off-pump coronary arteries bypass grafts and minimally invasive approach came up. The suture technique for coronary anastomosis construction is becoming inadequate to meet new surgeons’ demand. Therefore, there is an increasing need for alternative ways to perform coronary bypasses. This article reviews the ...

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