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Laser surgery in enclosed spaces: A review
Author(s) -
Macruz Radi,
Ribeiro Márcio P.,
Brum José Mauro G.,
Pasqualucci Carlos Augusto,
Mnitentag Jaime,
Bozinis Dimitrios G.,
Marques Euclydes,
Jatene Adib Domingos,
Décourt Luiz V.,
Armelin Egas
Publication year - 1985
Publication title -
lasers in surgery and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 112
eISSN - 1096-9101
pISSN - 0196-8092
DOI - 10.1002/lsm.1900050303
Subject(s) - perforation , laser , stenosis , catheter , medicine , surgery , radiology , optics , materials science , physics , punching , metallurgy
We describe the results of experiments carried out in the arteries of dogs, rabbits, guinea pigs, and humans, normal or atheromatous, calcified, or not, with the application of the argon and CO 2 laser, in vitro or in vivo, directly or indirectly. Similarly, we present the results of laser effects when radiation is delivered through a special catheter with the purpose of producing aortic insufficiency, opening pulmonary valvular stenosis, desobstructing carotid and coronary obstruction induced in dogs as well as atheromatous obstructions in human amputated legs. Arterial wall perforation was present in 50% of all cases. We suggest four options in order to diminish this adverse result: (1) the use of coherent optical bundles which will allow the proper guiding of the laser beam, (2) the construction of a special catheter for proper handling of the laser‐carrying fiber, (3) a combination of optical and computer programs which will aid to identify calcified regions, and (4) the use of dyes which will be strongly and selectively absorbed by the atheromas and which will thus allow their destruction at low laser powers.