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Proceedings Paper

Near-infrared spectroscopic assessment of oxygen delivery to free flaps on monkeys following vascular occlusions and inhalation of pure oxygen
Author(s): Fenghua Tian; Haishu Ding; Zhigang Cai; Guangzhi Wang; Fuyun Zhao
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Paper Abstract

In recent studies, near-infrared spectroscopy (NIRS) has been considered as a potentially ideal noninvasive technique for the postoperative monitoring of plastic surgery. In this study, free flaps were raised on rhesus monkeys' forearms and oxygen delivery to these flaps was monitored following vascular occlusions and inhalation of pure oxygen. Optical fibers were adopted in the probe of the oximeter so that the detection could be performed in reflectance mode. The distance between emitter and detector can be adjusted easily to achieve the best efficacy. Different and repeatable patterns of changes were measured following vascular occlusions (arterial occlusion, venous occlusion and total occlusion) on flaps. It is clear that the near-infrared spectroscopy is capable of postoperatively monitoring vascular problems in flaps. NIRS showed high sensitivity to detect the dynamic changes in flaps induced by inhalation of pure oxygen in this study. The experimental results indicated that it was potential to assess tissue viability utilizing the dynamic changes induced by a noninvasive stimulation. It may be a new assessing method that is rapid, little influenced by other factors and brings less discomfort to patients.

Paper Details

Date Published: 12 April 2002
PDF: 5 pages
Proc. SPIE 4536, International Workshop on Photonics and Imaging in Biology and Medicine, (12 April 2002); doi: 10.1117/12.462567
Show Author Affiliations
Fenghua Tian, Tsinghua Univ. (China)
Haishu Ding, Tsinghua Univ. (China)
Zhigang Cai, Peking Univ. (China)
Guangzhi Wang, Tsinghua Univ. (China)
Fuyun Zhao, Peking Univ. (China)

Published in SPIE Proceedings Vol. 4536:
International Workshop on Photonics and Imaging in Biology and Medicine
Qingming Luo; Britton Chance; Valery V. Tuchin, Editor(s)

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