Lasers in Dermatology—1993

Laser surgery: an approach to the pediatric patient

“…5,6 However, their "quasi-continuous" nature is often associated with higher incidences of hypertrophic scarring and textural changes. 15,16 In addition, in comparison with the pulsed-dye laser, a greater number of laser treatment sessions typically are needed to achieve vessel clearance. 17 Flashlamp-pumped pulsed-dye laser.…”

Der gepulste Farbstofflaser - Möglichkeiten und Grenzen

“…Klinisch sichtbar sind nach der Laserbehandlung purpurische erythematöse Makulae, die auf der Erythrozytenagglutination und der Schädigung der Gefäßwände beruhen [35]. Zusätzlich kommt es zum Auftreten von Ödemen und Krusten.…”

“…Atrophische Narben entstehen in 0,1-3% und hypertrophe Narben in 0-1%. Nachfolgende transitorische Hyperpigmentierungen treten in 0-57% auf, wobei diese Begleiterscheinung häufiger bei der großflächigen Behandlung von Feuermalen als bei kleineren Läsionen wie initialen Hämangiomen und Spider Nävi aufzutreten scheint [7,23,25,27,31,35,38,[44][45][46][47]58]. Transitorische Hypopigmentierungen werden in 0-10% beobachtet [7,22,23,26,31,38,42,44,45].…”

Treatment of spider leg veins with the KTP (532 nm) laser—A prospective study

“…The development of the argon laser with wavelengths between 488 and 577 nm allowed the successful treatment of vascular lesions. Its greatest disadvantage lies in the damaging of the surrounding tissue, including the epidermis is clinically-manifested as depigmentation, epidermic atrophia, and scarring [14,18,19]. The pulsed dye laser (wavelengths of 577 or 585 nm) developed in the 80's showed better vascular selectivity.…”

“…The pulsed dye laser (wavelengths of 577 or 585 nm) developed in the 80's showed better vascular selectivity. The disadvantage of this laser results from the brief pulse duration of 300 to 500 microseconds, which leads to vascular rupture, thus to the cosmetically-irritating case of purpura [18,20]. Studies have shown that vascular rupture can be avoided by using longer pulse duration at a range from 1 to 10 microseconds [21].…”