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Results for “Laser Coagulation”

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At least 19 recordsLinked to original sources
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[Clinical experiences with a new method of laser coagulation in gastrointestinal hemorrhages].

Endoscopic laser-coagulation was used 94 times in 14 patients to stop gastro-intestinal bleeding or coagulate potential bleeding sources during non-bleeding intervals. Lasting haemostasis was achieved in three cases of incomplete gastric erosion, one of gastric ulcer, one of duodenal ulcer and one of bleeding after antral rugectomy. It failed to stop severe arterial bleeding in a case of gastric carcinoma. Lasting haemostasis was achieved in six haemangiomas of the colon, one case of angiomatosis of the antrum with 62 individual sites, two of angiodysplasia of the colon, 17 lesions in Osler's disease of the oesophagus (2 cases), stomach (10) and duodenum (5). The procedure was performed in the course of diagnostic endoscopy with an argon-ion laser developed by the authors, which has a density of 0.7-1.3 W/mm2. No complications have been observed so far.

Angiomatosis↗
PubMed1976

[Occurrence of diffusions shown by fluorescence angiography of the laser coagulation in animals (author's transl)].

Laser treated rat fundi were observed angiographically and with the fluorescence microscope for 3 months. Angiographically diffusions have been observable up to about one week post laser, fluorescence microscopically, however, for the whole observation time of 3 months. From the 2nd week, these diffusions were produced mainly by neovascularizations which angiographically were not visible. They started from the choroid and penetrated into the outer part of the retina.

Animals↗
PubMed1978

Laser-coagulation of ruptured fixation suture after lens-implantation.

Before it was known that polyamide tends to dissolve in tissue, nylon sutures were used to fixate 2-loop-Medallion-lenses to the iris. As was to be expected cases turned up in which the suture had ruptured. This situation entails the danger of contact between the end of the broken suture and the endothelium. By coagulation of the suture with a laser beam the danger was eliminated.

Corneal Injuries↗
PubMed1978

[Protein concentration in the aqueous humour of the rabbit after argon laser coagulation of the iris (author's transl)].

After coagulation of the iris of pigmented rabbits with argon laser, the protein concentration of the aqueous humour was measured at different times. An initial increase of the protein concentration was found both after low and high intensity coagulation. Already 5 hours later the protein concentration was again low and no further increase could be observed within 28 days. The contralateral untreated eye showed a lower but significant response. High intensity coagulation lead to a more severe reaction.

Animals↗
PubMed1978

[Destruction of bladder neoplasms by means of transurethral neodym-YAG-laser coagulation].

Tumors of the urinary bladder were destroyed successfully by the use of a Neodymium-YAG-laser for the first time at the Department of Urology of the University of Munich. A final estimation of the real value of this method cannot be made because the number of cases was too small and the period of follow-up too short. Nevertheless we hope to increase the spectrum of transurethral treatment of bladder tumors. The use of the Neodymium-YAG-laser irradiation seems to make sense especially in treatment of tumors reaching deep layers of the bladder wall.

Carcinoma, Transitional Cell↗
PubMed1976

[Diathermy procedures, light and laser coagulation, cryocoagulation. Experimental and clinical considerations].

The clinical and experimental results from the methods of coagulation currently in use are presented. The advantages and disadvantages of trans-scleral methods (diathermy and cryopexy) and trans-ocular methods (Xenon arc and argon laser) are discussed. Experiments on absorption, the mode of action of intense light, the optimal time and method of application, the necessary intensity and the extent of the coagulated area are communicated. Of the trans-scleral methods, cryopexy is to be prefered. The trans-ocular methods have the advantage of a more exact localisation and dosage. Either route can often be chosen in any particular case, though at present no overriding advantage has been shown for either.

Cryosurgery↗