A Nd:YAG laser scalpel was used for the surgical reduction of a human hyperplastic tongue. This instrument combines a fine cutting precision with haemostatic properties, whereby loss of blood is minimized and the surgeon's field of view unimpeded by flooding from the damaged capillary bed. The coagulative properties of Nd:YAG laser light are, however, insufficient to effect blood flow stasis in larger calibre vessels (arteries > 2 mm; veins > 3-5 mm), such as those located at the base of the tongue. For this purpose, bipolar diathermy (electrocautery) was employed. The ultrastructural changes incurred by skeletal muscle fibres using these two "heat" sources were compared. The damage profile elicited using each modality was similar: coagulation of myofilamentous proteins leads to destruction of fibrillar architecture with concomitant loss of periodic banding; on moving away from the wound margin, characteristic features are gradually restored. As the severity of these heat-induced effects decreases, there is a corresponding increase in superimposed dislocation and tearing phenomena induced by post-treatment swelling.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/S0940-9602(97)80110-0 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Combined fractional CO2 laser with topical tioconazole versus Q-switched Nd-YAG laser in the treatment of onychomycosis; a randomized comparative trial.
Lasers Med Sci
November 2024
Dermatology Department, Kasr alainy Faculty of Medicine, Cairo University, Cairo, Egypt.
Treatment of onychomycosis includes topical and systemic agents. However, prolonged use of oral treatment could cause adverse effects and topical antifungal agents have limited penetration. To compare the clinical efficacy and the safety of fractional CO laser combined with topical tioconazole nail solution versus Q-switched 1064 Nd: YAG laser in the treatment of fingernail onychomycosis.
View Article and Find Full Text PDFMelasma Revisited: National Survey Reveals How Dermatologists Diagnose and Treat This Complex Skin Condition.
J Cosmet Dermatol
January 2025
Department of Dermatology, Faculty of Medicine, Balikesir University, Balikesir, Turkiye.
Article Synopsis
- Melasma is a common, chronic skin condition that mainly affects women, presenting as dark patches on the face and is often perceived as a serious cosmetic issue.
- A survey conducted among 199 dermatologists in Turkiye revealed that the majority of patients with melasma are females between the ages of 30 to 40, with mixed melasma being the most common type.
- The study found that topical treatments, particularly Kligman's formula, are most frequently used, while oral treatments like tranexamic acid are less common, and there's a significant recurrence rate of 41%-60%, suggesting the need for better management strategies.
Anion photoelectron spectroscopy and chemical bonding of ThS2- and ThSO.
J Chem Phys
October 2024
Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, USA.
Anion photoelectron spectra of ThSO- and ThS2- were recorded using the third (355 nm) harmonic of an Nd-YAG laser; these provided the measured vertical detachment energies of each anion. The experiments are supported by extensive coupled cluster calculations on ThSO, ThSO-, ThS2, and ThS2-, as well as the oxygen congeners ThO2 and ThO2-. The ab initio calculations, which included complete basis set extrapolations, spin-orbit effects using four-component coupled cluster, and higher-order correlation contributions through CCSDT(Q), yielded an adiabatic electron affinity for ThO2 that was within 0.
View Article and Find Full Text PDFDevelopment of a Miniaturized 2-Joule Pulsed Plasma Source Based on Plasma Focus Technology: Applications in Extreme Condition Materials and Nanosatellite Orientation.
Micromachines (Basel)
September 2024
Dicontek Ltda., Santiago 7550171, Chile.
Plasma focus devices represent a class of hot and dense plasma sources that serve a dual role in fundamental plasma research and practical applications. These devices allow the observation of various phenomena, including the z-pinch effect, nuclear fusion reactions, plasma filaments, bursts, shocks, jets, X-rays, neutron pulses, ions, and electron beams. In recent years, considerable efforts have been directed toward miniaturizing plasma focus devices, driven by the pursuit of both basic studies and technological advancements.
View Article and Find Full Text PDFRisk factors for early and late retinal detachment after boston type I keratoprosthesis surgery.
Graefes Arch Clin Exp Ophthalmol
September 2024
Centro de Oftalmología Barraquer, Barcelona, Spain.
Article Synopsis
- The study looked at the risks of retinal detachment (RD) after a specific eye surgery called Boston Type 1 Keratoprosthesis (B1KPro) during the first year and beyond.
- They found that 29% of patients experienced RD, with most cases happening within the first year (21%) and fewer later (7%).
- Important risk factors for early RD included low eye pressure (hypotony), previous eye surgeries, and certain eye conditions, while changes in the retina before surgery were linked to later RD.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!