✦ LIBER ✦

Effects of blood flow on laser probe temperature in human arteries

✍ Scribed by Steven H. Silverman; Adib I. Khoury; George S. Abela; Dr. James M. Seeger

Publisher: John Wiley and Sons
Year: 1988
Tongue: English
Weight: 608 KB
Volume: 8
Category: Article
ISSN: 0196-8092
DOI: 10.1002/lsm.1900080603

No coin nor oath required. For personal study only.

✦ Synopsis

Laser recanalization using metal capped fibers occurs by thermal vaporization of occluding plaque. However, little is known about the effects of blood and flow on the temperature of the laser probe or the arterial wall during lasing. To study this, probe and arterial wall temperatures were measured while a metal capped fiber, activated by an argon laser, was held stationary in a stenotic human peripheral artery. Arteries were perfused with saline and blood, and flow was varied from 0 to 140 cc/min. Probe temperatures were significantly higher in blood than in saline. However, the increased probe temperature achieved in blood was not transferred to the arterial wall. Increasing flow decreased probe temperature in both media, but again arterial wall temperatures were minimally affected. Thus, the presence of blood and flow may significantly affect heat generation and heat transfer during arterial recanalization using metal capped fibers.

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