Blood Flow Shunt and Dual Blood Supply of Liver Studied with Scintillation Camera Coupled with Computer and Digital Color Analyzer

2015 ◽  
pp. 8-9
Author(s):  
H. Ueda
Keyword(s):  
Blood Flow ◽  
Blood Supply ◽  
Scintillation Camera ◽  
Dual Blood Supply ◽  
Color Analyzer

Innervation of endoneurial microvessels in human sural nerve

1992 ◽  
Vol 50 (1) ◽  
pp. 920-921
Author(s):  
John L. Beggs ◽  
Peter C. Johnson ◽  
Astrid G. Olafsen ◽  
C. Jane Watkins
Keyword(s):  
Blood Flow ◽  
Blood Vessels ◽  
Blood Supply ◽  
Peripheral Nerves ◽  
Sural Nerve ◽  
Nerve Fibers ◽  
Arterial Supply ◽  
Autonomic Nerve ◽  
Vasa Nervorum ◽  
Endoneurial Blood Flow

The blood supply (vasa nervorum) to peripheral nerves is composed of an interconnected dual circulation. The endoneurium of nerve fascicles is maintained by the intrinsic circulation which is composed of microvessels primarily of capillary caliber. Transperineurial arterioles link the intrinsic circulation with the extrinsic arterial supply located in the epineurium. Blood flow in the vasa nervorum is neurogenically influenced (1,2). Although a recent hypothesis proposes that endoneurial blood flow is controlled by the action of autonomic nerve fibers associated with epineurial arterioles (2), our recent studies (3) show that in addition to epineurial arterioles other segments of the vasa nervorum are also innervated. In this study, we examine blood vessels of the endoneurium for possible innervation.

A dual blood supply protects the right gastroepiploic arterial graft: Report of two cases

1995 ◽  
Vol 34 (3) ◽  
pp. 227-230
Author(s):  
Hideki Hashimoto ◽  
Takaaki Isshiki ◽  
Yuji Ikari ◽  
Kazuhiro Hara ◽  
Fumihiko Saeki ◽  
...  
Keyword(s):  
Blood Supply ◽  
Arterial Graft ◽  
Dual Blood Supply ◽  
The Right

scholarly journals Long-Term Outcomes of Digital Nerve Repair Accompanied by Digital Artery Injury in Flexor Zone 2

2019 ◽  
Vol 06 (01) ◽  
pp. e7-e9
Author(s):  
Gokce Yildiran ◽  
Mustafa Sutcu ◽  
Osman Akdag ◽  
Zekeriya Tosun
Keyword(s):  
Blood Flow ◽  
Blood Supply ◽  
Nerve Repair ◽  
Arterial Injury ◽  
Digital Artery ◽  
Digital Nerve ◽  
Significant Difference ◽  
Sensory Recovery

Abstract Objectives Better healing results of any tissue or area is closely linked with a well-blood supply in reconstructive surgery. Peripheric nerve healing is closely related to blood supply as well. We aimed to assess whether there was any difference between digital nerve healing with and without extrinsic blood supply. Methods We assessed 48 patients with unilateral digital nerve injury at zone 2. Twenty-four of them had unrepairable arterial injury and other 24 had no arterial injury. The 24 patients in the “unrepaired artery group” (UA) and 24 patients in the “intact artery group” (IA) were compared. Results Mean follow-up time was 17.7 months. The mean two-point discrimination (2PD) was 5.29 mm in IA group and 5.37 mm in UA group. One neuroma in IA group and two neuromas in UA group were determined. We found no statistically significant difference between these groups in terms of neuroma, 2PD, and cold intolerance. The results of British Medical Research Council sensory recovery clinical scale were comparable for these two groups. Conclusion Digital nerve healing is related to numerous factors. We hypothesized that blood flow may be one of these factors; however, at this zone digital artery repair is not the foremost determinant for digital nerve healing. Further researches should be done for upper injury levels. Despite this result, we argue not to leave the digital artery without repairment and we propose to repair both artery and nerve to achieve the normal anatomical integrity and to warrant finger blood flow in possible future injuries.

Computational Fluid Dynamics Simulation of the Blood Flow in the Circle of Willis

2002 ◽  
Author(s):  
M. Harazawa ◽  
T. Yamaguchi
Keyword(s):  
Blood Flow ◽  
Blood Supply ◽  
Internal Carotid ◽  
Complex Geometry ◽  
Cerebral Aneurysms ◽  
Cerebrovascular Diseases ◽  
Circle Of Willis ◽  
Dynamics Simulation ◽  
The Brain ◽  
Internal Carotid Arteries

The blood supply for the brain is born by four arteries, that is, two internal carotid arteries and two vertebral arteries. They are mutually connected at the cerebral base, and form a closed arterial circle, called the circle of Willis, so that the safety of the brain blood supply is increased. However their anastomoses show a very wide variety of atypism. If some of anastomses are very thin, or even do not exist, the safety of the blood supply is not secured. This is particularly important when some diseases such as cerebral thrombosis occurs and the blood flow supply stops unilaterally. Redistribution of the blood supply in such cases is thought to be strongly affected by geometrical configuration of the anastomoses. It is also known that cerebral aneurysms, which may induce serious cerebrovascular diseases, preferentially occur at the circle of Willis. Complex blood flow pattern has been suspected of having an influence on this preference. This is again dependent on complex geometry of the circle.

scholarly journals Blood supply and vascular reactivity of the spinal cord under normal and pathological conditions

2011 ◽  
Vol 15 (3) ◽  
pp. 238-251 ◽  
Author(s):  
Nikolay L. Martirosyan ◽  
Jeanne S. Feuerstein ◽  
Nicholas Theodore ◽  
Daniel D. Cavalcanti ◽  
Robert F. Spetzler ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Blood Flow ◽  
Cord Blood ◽  
Blood Supply ◽  
Vascular Reactivity ◽  
Vascular System ◽  
Spinal Cord Blood Flow ◽  
Arterial Blood ◽  
Severity Of Injury ◽  
Cord Injury

The authors present a review of spinal cord blood supply, discussing the anatomy of the vascular system and physiological aspects of blood flow regulation in normal and injured spinal cords. Unique anatomical functional properties of vessels and blood supply determine the susceptibility of the spinal cord to damage, especially ischemia. Spinal cord injury (SCI), for example, complicating thoracoabdominal aortic aneurysm repair is associated with ischemic trauma. The rate of this devastating complication has been decreased significantly by instituting physiological methods of protection. Traumatic SCI causes complex changes in spinal cord blood flow, which are closely related to the severity of injury. Manipulating physiological parameters such as mean arterial blood pressure and intrathecal pressure may be beneficial for patients with an SCI. Studying the physiopathological processes of the spinal cord under vascular compromise remains challenging because of its central role in almost all of the body's hemodynamic and neurofunctional processes.

The Blood Supply of the Scaphoid Bone

2009 ◽  
Vol 34 (3) ◽  
pp. 351-357 ◽  
Author(s):  
M. J. OEHMKE ◽  
T. PODRANSKI ◽  
R. KLAUS ◽  
E. KNOLLE ◽  
S. WEINDEL ◽  
...  
Keyword(s):  
Blood Flow ◽  
Blood Supply ◽  
Scaphoid Bone ◽  
Collateral Blood Flow ◽  
Dorsal Approach ◽  
Microscopic Techniques ◽  
Formalin Fixed

Scaphoid vascularisation was investigated using macroscopic and microscopic techniques in 12 uninjured, formalin fixed cadaver hands. A good blood supply of the scaphoid bone from palmar, dorsal and radial vessel groups with a variety of anastomoses was found which should provide sufficient collateral blood flow from adjacent regions in some patients. Since blood supply is available from the palmar circulation, a dorsal approach to the scaphoid bone is possible.

scholarly journals Extended latissimus dorsi chimeric thoracoplasty with a vascular supercharge for Aspergillus empyema

2019 ◽  
Vol 30 (3) ◽  
pp. 491-492
Author(s):  
Masanori Shimomura ◽  
Yoshihiro Sowa ◽  
Ryo Yamochi ◽  
Masayoshi Inoue
Keyword(s):  
Blood Flow ◽  
Indocyanine Green ◽  
Intravenous Injection ◽  
Blood Supply ◽  
Latissimus Dorsi ◽  
Serratus Anterior

Abstract The latissimus dorsi and serratus anterior muscles are available for reconstruction coverage of thoracic defects. We performed extended latissimus dorsi-serratus anterior chimeric thoraco-myoplasty with a vascular supercharge to maintain sufficient blood supply to the flaps because of a deficiency in the distal blood flow to the flap revealed by an intravenous injection of indocyanine green and simultaneous endobronchial embolization for refractory Aspergillus empyema.

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