Human Saphenous Vein and Coronary Bypass Surgery: Scanning Electron Microscopy of Conventional and ‘No-Touch’ Vein Grafts

2004 ◽  
Vol 1 (2) ◽  
pp. 133-139 ◽  
Author(s):  
Vasileios Vasilakis ◽  
Michael R. Dashwood ◽  
Domingos S.R. Souza ◽  
Andrzej Loesch
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Saphenous Vein ◽  
Bypass Surgery ◽  
Coronary Bypass ◽  
Coronary Bypass Surgery ◽  
Human Saphenous Vein ◽  
Vein Grafts ◽  
Scanning Electron

scholarly journals Expression of apoptosis in human saphenous vein grafts in restoration of blood flow through coronary bypass surgery

2009 ◽  
Vol 24 (3) ◽  
Author(s):  
Luís Fernando Tirapelli ◽  
Daniela Pretti da Cunha Tirapelli ◽  
Marcelo Bellini Dalio ◽  
Alfredo José Rodrigues ◽  
Paulo Roberto Barbosa Évora
Keyword(s):  
Blood Flow ◽  
Saphenous Vein ◽  
Bypass Surgery ◽  
Coronary Bypass ◽  
Coronary Bypass Surgery ◽  
Human Saphenous Vein ◽  
Vein Grafts ◽  
Saphenous Vein Grafts ◽  
Flow Through

In Vivo Compliance of the Human Saphenous Vein Measured by Sonography: Comparison with Plethysmographic and in vitro Measurements

1995 ◽  
Vol 10 (4) ◽  
pp. 143-148 ◽  
Author(s):  
G. Lefthériotis ◽  
Th. Pochet ◽  
P. Abraham ◽  
J. B. Subayi-Kamuanga ◽  
A. Jardel ◽  
...  
Keyword(s):  
Saphenous Vein ◽  
Bypass Surgery ◽  
Coronary Bypass ◽  
Coronary Bypass Surgery ◽  
University Hospital ◽  
Human Saphenous Vein ◽  
Venous Compliance ◽  
In Vitro Measurements

Objective: To evaluate a non-invasive and selective measurement of in vivo venous compliance of the human saphenous vein using sonography. Design: An experimental study in patients prior to coronary bypass surgery. Setting: Departments of Physiology and Cardiothoracic Surgery, University Hospital of Angers. Patients: Thirty patients investigated prior to coronary bypass surgery. Interventions: Simultaneous strain-gauge venous occlusion plethysmography (VOP) and measurements of the circumference of the great saphenous vein by sonography at four different occlusion pressures: 20, 30, 40 and 50 mmHg. In 10 of the same patients, in vitro determination of pressure–volume relationship during progressive inflation of excised saphenous vein samples. Main outcome measures: Venous compliance obtained with the three methods. Results: Weak correlation coefficients were found between in vitro measurements and VOP ( r=0.478, p<0.01) and sonography ( r=0.497, p<0.02). Although individual correlations between in vitro and VOP measurements ranged from 0.928 to 0.999, a wide heterogeneity was found with sonography (from 0.620 to 0.985). Conclusions: Sonography allows the selective measurement of in vivo venous compliance, although the measured compliances differ from other techniques.

Characterization of the Vasa Vasorum in the Human Great Saphenous Vein: A Scanning Electron Microscopy and 3D-Morphometry Study Using Vascular Corrosion Casts

2014 ◽  
Vol 20 (4) ◽  
pp. 1120-1133 ◽  
Author(s):  
Markus Herbst ◽  
Thomas Joachim Hölzenbein ◽  
Bernd Minnich
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Saphenous Vein ◽  
Great Saphenous Vein ◽  
Three Dimensional ◽  
Coronary Bypass ◽  
Vasa Vasorum ◽  
Corrosion Casts ◽  
Coronary Bypass Grafts ◽  
Scanning Electron

AbstractThe vasa vasorum (VV) of explanted segments of the human great saphenous vein (Vena saphena magna; HGSV), harvested during dissection for coronary bypass grafts or diseased vein segments from the “Salzburger Landesklinikum,” were studied by scanning electron microscopy and three-dimensional morphometry of microvascular corrosion casts. The main objective of this study was to examine the VV’s structural arrangement in order to find the most vital segments of the HGSV and in turn to improve the results of coronary bypass surgeries. The study presents a meticulous analysis of the whole microvascular system of the VV of the HGSV and its three-dimensional arrangement. It is one of the first studies yielding detailed quantitative data on geometry of the VV of the HGSV. A detailed insight into different vascular parameters such as vessel diameter, interbranching, intervascular distances, and branching angles at different levels of the VV’s angioarchitecture and in different parts of the HGSV in health and disease is given. Further, the geometry of bifurcations was examined in order to compute the physiological optimality principles of this delicate vascular system based on its construction, maintenance, and function.

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