Figure - available from: Laryngoscope Investigative Otolaryngology
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A) Microdirect laryngoscopy showing untreated left false cord papilloma resected with forceps. B) Photomicrograph of the left false vocal cord papilloma biopsy with underlying vessels lined by unremarkable endothelial cells (arrows) showing no laser effect (200X, inset 400X).
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Objectives
Tissue effects occurring with potassium‐titanyl phosphorous (KTP) laser treatment are difficult to quantify due to the multiple variables that affect not only the fluence (energy delivered) but also the laser–tissue interaction. This histopathologic analysis of recurrent respiratory papilloma (RRP) removed after treatment with KTP laser...
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Objective
To evaluate a negative pressure microenvironment designed to contain laser plume during flexible transnasal laryngoscopy.
Methods
The Negative Pressure Face Shield (NPFS) was previously reported as well tolerated with initial use on 30 patients. Diagnostic transnasal laryngoscopy was performed on an additional 108 consecutive patients wh...
Citations
... If the optical fiber tip is brought near contact or outright contact with the target tissue, the laser demonstrates ablative effects. 59 This is due to the scattering effect of air discussed previously. The ablative effect is due to high concentration of heat generated at the fiber tip which has an effect similar to electrocautery. ...
... Far fewer studies have examined the histological changes of non-ablative lasers in comparison to ablative lasers or cold steel. A study by Eigsti et al 59 65 showed KTP laser treatment after vocal fold injury via punch biopsy led to decreased inflammatory biomarkers and collagen transcription levels. This implies the KTP laser may have photobiomodulatory effects that influence wound healing. ...
Cold-steel has served as the gold standard modality of phonosurgery for most of its history. Surgical laser technology has revolutionized this field with its wide use of applications. Additional modalities have also been introduced such as coagulative lasers, photodynamic therapy, and cryotherapy. This review will compare the surgical modalities of cold steel, surgical lasers, phototherapy and cryotherapy. The mechanism of action, tissue effects and typical uses will be addressed for each modality.
