- 著者
-
藤井 芳郎
磯貝 典孝
黒住 望
上石 弘
久山 健
- 出版者
- 近畿大学
- 雑誌
- 近畿大学医学雑誌 (ISSN:03858367)
- 巻号頁・発行日
- vol.11, no.3, pp.367-377, 1986-09-25
It is quite important to fully comprehend the peripheral blood circulation after transferring flaps and making anastomoses with microsurgical techniques in the field of plastic and reconstructive surgery. Many methods have been developed to assess the peripheral blood circulation. The Laser Doppler flowmeter, which was first utilized in the field of mechanical engineering, is beginning to play a major role in measuring the peripheral circulation in many fields of medicine. The detection of doppler spectral broadening as light is reflected against the moving blood cells in the capillaries. Single-beam and crossed dual-beam velocimetries have been used, and introduction of a microscope into the optics has facilitated the measurment of blood flow in microvessels. The laser beam may be brought into contact with the flaps and related areas by using fiberoptics. The method detects fluctuations in flow occurring in the capillaries within 1.5mm depth of the surface of the skin. In this study, we would like to present the usefulness of this important apparatus, showing the case of a cross-leg flap and the case of replanted fingers with the technique of microsurgery. The Laser Doppler flowmeter showed that delay of the flap was clearly effective through its increased level of peripheral blood flow, so that the cross-leg flap could be released safely. The waveform of the Laser Doppler flowmeter for replanted fingers were consistent with their visual conditions. The apparatus to be a reliable postoperative monitor for measuring flap transfer and replantation of amputated fingers easily, rapidly, noninvasively and continuously, including those without a visual surface. It has advantages over any other instruments in that it facilitates the observation of actual red cell movement at the dermal capillaries. Further development is, however, required for Laser Doppler flowmeter to provide more absolute volume per unit time.