Kautzky M, Bigenzahn W, Steurer M, Susani M, Schenk P
II. Universitäts-HNO-Klinik Wien.
HNO. 1992 Dec;40(12):468-71.
A pulsed Holmium: YAG laser (lambda = 2120 nm) was used during functional endoscopic endonasal surgery in ten patients with recurrent chronic inflammation of the paranasal sinuses. The Holmium: YAG laser energy was coupled to a 600 microns core diameter nylon fiber. Power settings of 950 mJ per 2.5 microseconds pulse at 5 pulses per second were used. Tissue responses to treatment were examined by light microscopy. The photoablative mechanism of the laser-tissue interaction led to bone and soft tissue ablation with only a minor thermal component in the target zone. In comparison with other laser types available clinically, there was no carbonization zone after use of the Holmium-YAG laser. The area of tissue damage produced was significantly smaller (370-520 microns only) and wound healing proceeded without complication. The physical settings of the laser equipment are described with regard to their significance in photoablation when using flexible light-conducting fibers. The possible role of the Holmium: YAG laser in clinical surgery is discussed on the basis of the present experience.
钇铝石榴石激光（波长=2120纳米）被用于10例复发性慢性鼻窦炎患者的功能性鼻内镜鼻窦手术中。钬：钇铝石榴石激光能量通过一根芯径600微米的尼龙光纤传导。使用的功率设置为每2.5微秒脉冲950毫焦，每秒5个脉冲。通过光学显微镜检查组织对治疗的反应。激光与组织相互作用的光蚀机制导致骨和软组织消融，目标区域仅有轻微的热成分。与临床上可用的其他激光类型相比，使用钬-钇铝石榴石激光后没有碳化区。产生的组织损伤面积显著更小（仅370-520微米），伤口愈合过程无并发症。描述了激光设备的物理设置及其在使用柔性光导纤维进行光蚀时的重要性。基于目前的经验，讨论了钬：钇铝石榴石激光在临床手术中的可能作用。
