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Results for “Electrocoagulation”

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At least 163 records · Page 9Linked to original sources

PubMed1988

[Treatment of cancer of the rectum by electrocoagulation].

The destruction of rectum carcinoma by electrocoagulation can be used for the treatment of patients of older age groups with high operative risk having exophite tumors of the inferior ampular part not more than 3 cm in size. When observing the conditions concerned and careful dispensary examination, the efficiency of immediate and long-term results of this operation are not inferior to generally used routine methods of treatment. Electrocoagulation of rectum carcinoma must be fulfilled but at oncological and specially equipped oncoproctological units.

Age Factors↗

PubMed1987

Endoscopic flushing electrocoagulation for upper gastrointestinal bleeding--an alternative to surgery.

Twenty-three patients, mean age of 65 years, planned for emergency surgery because of upper gastrointestinal bleeding, were electrocoagulated with an endoscopic Storz monopolar flushing electrode. Nineteen patients were managed successfully. Two out of twelve patients with gastric ulcer and both patients with gastrojejunal ulcer bleeding needed an operation. The overall success rate was 82% and the mortality was 9%. According to this study endoscopic monopolar flushing liquid electrocoagulation is a good alternative to surgery in upper gastrointestinal bleedings except gastrojejunal ulceration.

Adult↗

PubMed1987

[Apparently superficial epidermoid cancer of the esophagus: value of radiotherapy and electrocoagulation].

A 77 years old man has been treated by roentgenotherapy for an epidermoid carcinoma of the esophagus. The lesion extended from 24 to 37 cm of the arcades and did not modify roentgenographically the contraction of the muscular layer. This cancer has been heralded by inhalations when swallowing. An error of focusing of radiotherapy resulted in an under irradiation of the upper segment of the esophagus. At the same level a recurrency of the lesions has been treated by electrocoagulation under fibroscopy. The palliation was good but it did not prevent multiple recurrences. The remainder of the esophagus which received 60 Grays has been cured during the three years of follow-up. A second patient has a asymptomatic microcarcinoma at 32 cm. seemingly superficial and was cured by 60 Grays after a follow-up of seven years. External roentgenotherapy is compared to surgery and the use of local treatments as electrocoagulation, laser therapy and intraluminal roentgentherapy are discussed.

Aged↗

PubMed1986

[Treatment by electrocoagulation in malignant tracheobronchial pathology].

The author reports his experience of electrocoagulation used to remove tumoral obstruction of the trachea and primary bronchi. Endoscopic electrocoagulation using a fibrobronchoscope is a useful method. Its results and its cost are of interest, as confirmed by experience in 17 patients.

Bronchial Neoplasms↗

PubMed1985

Endoscopic electrocoagulation of major bleeding from peptic ulcer.

Endoscopic electrocoagulation with a liquid monopolar probe was exclusively attempted in 77 patients with major bleeding from peptic ulcer assessed as requiring emergency surgery. Endoscopy failed to control bleeding in 14 patients (18%), who proceeded directly to surgery. Initial endoscopic hemostasis was obtained in 63 patients, but hemorrhage recurred in 18 (29%). Rebleeding required surgery in 11 patients and another patient died prior to surgery. Permanent endoscopic control was achieved in 51 patients (66%). Without difference in transfusion requirement, endoscopy was most likely to succeed in patients with superficial acute ulcer, onset of bleeding in hospital, gastric ulcer, no earlier history of dyspepsia and in patients with previous ulcer surgery. Endoscopy was less likely to succeed in patients with chronic duodenal ulcer or earlier dyspepsia, though it controlled major bleeding in more than half of such patients. Profuse bleeding, and in particular poor access in a narrowed duodenal bulb, were important determinants of endoscopic failure. Of the patients with permanent endoscopic hemostasis, 8% subsequently underwent elective ulcer surgery. Endoscopic electrocoagulation is safe and has potential to control major bleeding, obviating emergency surgery, in two-thirds of the cases. As the less invasive method, endoscopy should be attempted before surgery, particularly in patients regarded as poor surgical risks or with no history of dyspepsia.

Adolescent↗

PubMed1985

[Colonic angiodysplasia--its treatment by endoscopic electrocoagulation].

Three patients older than sixty were found to have "lower" gastrointestinal bleeding from colonic angiodysplasia. One of them presented multiple lesions. Throughout five colonoscopic procedures all of them were treated by endoscopic monopolar electrocoagulation, without complications. At 3, 18 and 24 months they were asymptomatic, their hematocrits stabilized and multiple fecal examinations for occult blood remained negative. We emphasized here the diagnostic value of colonoscopic examination and the therapeutic implication of endoscopic electrocoagulation as positive approaches to the management of bleeding colonic angiodysplasia.

Aged↗

PubMed1982

Menstrual pattern changes following laparoscopic sterilization: a comparative study of electrocoagulation and the tubal ring in 1,025 cases.

This investigation compared the effects of the laparoscopic occlusive techniques of unipolar electrocoagulation and the tubal ring on subsequent menstrual patterns. The question of whether sterilization, in general, causes menstrual pattern changes is also addressed. The 1,025 cases constituted a data set collected by investigators at five institutions in five countries. After controlling for prior contraceptive use, the two techniques were compared with respect to menstrual cycle regularity, cycle length, flow duration, amount of flow, dysmenorrhea and intermenstrual bleeding. In this series, approximately 10% to 50% (depending on the menstrual parameter) of the menstrual pattern changes seen within six months following sterilization could be attributed to the discontinuation of the Pill or IUD at the time of sterilization. The majority of the women experienced no menstrual pattern changes following sterilization. There was no statistically significant difference between the two occlusion techniques in terms of the proportion of women who reported changes in any of their menstrual parameters. The theory that sterilization causes menstrual pattern changes rests on the hypothesis that the greater the degree of destruction of the uteroovarian vascular anastomosis (as with unipolar electrocoagulation), the greater the amount of subsequent menstrual pattern disturbance. Our findings suggest that this hypothesis is not valid.

Adult↗

PubMed1984

Automatically controlled bipolar electrocoagulation--"COA-COMP".

Modern bipolar electrocoagulation has certain limitations, especially regarding the regulation of the short coagulation course. Studies on the electrical parameters of tissues during heating led to the conclusion that impedance changes in a typical and reproducible way. Furthermore, the impedance value proved to be close to minimal at the moment of coagulation. Laboratory tests were performed to correlate the pressure strength of the sealed artery to the impedance change. The tests proved that strong seals were achieved when the coagulation was interrupted soon after minimum impedance. Good seals were also achieved with later interruption of the heating but the well-known phenomena of sticking of the forceps to tissues and charging of the tips with charred tissue became more prominent. Further electrocoagulation gives carbonisation, fulguration and risk of new haemorrhage. Based on these results, micro-computerized equipment was built which cut off the coagulation soon after minimum impedance, i.e. when good strength without sticking was achieved. This equipment was tested clinically and the trials showed that the method is practical and most reliable. The microcomputer also allows automatic start of the coagulation as needed during opening or closing of wounds, as well as providing a built-in test of the equipment. This equipment saves time and labour and increases safety.

Electrocoagulation↗

PubMed1983

Electrocoagulation as a primary curative method in the treatment of carcinoma of the rectum.

Electrocoagulation as a primary curative method for the treatment of carcinoma of the rectum is of proved merit. The continuation of abdominoperineal resection as the acceptable standard routine for treatment will deny many patients the choice of a proved alternative curative procedure with less risk, a better survival rate and a better quality of life. To confirm or negate the reported efficacy of electrocoagulation in the treatment of carcinoma of the rectum, the initiation of universal prospective studies in its use is warranted.

Adult↗

PubMed1983

[Bipolar electrocoagulation in active upper gastrointestinal hemorrhage. Results of a prospective, non-controlled, multicenter study].

This is a report on a prospective, non-controlled, and multicenter trial using a new bipolar electrocoagulation unit (BICAP system) in patients with active upper gastrointestinal haemorrhage. From November 1980 to June 1982 55 patients have been treated. In 87% the bleeding could be stopped by electrocoagulation. In 27% rebleeding occurred. The mortality of upper GI bleeding in this series was 10.9%.

Acute Disease↗

PubMed1984

Comparative study of the safety and efficacy of liquid and dry monopolar electrocoagulation in experimental canine bleeding ulcers using computerized energy monitoring.

The drawbacks of monopolar electrocoagulation in the control of gastrointestinal bleeding include tissue adherence, unpredictable energy deposition, and a high incidence of tissue damage. Introduction of a conductive interfacial film of liquid between the monopolar electrode and the bleeding point during electrocoagulation may overcome these drawbacks. A prospective, controlled study was undertaken to evaluate the efficacy and safety of a monopolar electrode in liquid and dry modes when used to coagulate experimental canine bleeding ulcers. All experiments were done in open fashion via a gastrotomy with hand-held electrodes. An analog computer, which could be connected between a standard electrosurgical generator and the electrode, was designed and built to monitor and control the energy delivered to the tissue. Both liquid and dry electrodes were highly effective in stopping bleeding. The liquid electrode was found to be superior to the dry electrode in that tissue adherence was eliminated and energy deposition was more predictable, varying less with angle of incidence. The liquid electrode caused less macroscopic serosal damage and less full-thickness histologic damage if the total energy or number of pulses was limited; however, both caused microscopic full-thickness damage in one-half of the experimental ulcers treated, although no perforations occurred.

Animals↗

PubMed1983

Electrocoagulation diathermy for cervical dysplasia and carcinoma in situ: a 15-year survey.

The present report assesses 15 years' experience with electrocoagulation diathermy in the treatment of cervical intraepithelial neoplasia (CIN). Selection is based on the ability to visualize the boundaries of the lesion colposcopically. Visualization, together with cytology and target biopsy, should exclude invasive carcinoma. Histologically confirmed CIN of varying severity (almost two thirds were CIN III) was treated by diathermy in 1864 patients. The size of the lesion varied, and at times the lesion extended into the endocervical canal. Cervical intraepithelial neoplasia was eradicated in 97.3% of patients by a single diathermy treatment. Ninety-three percent of all patients under the age of 30 with CIN were treated by this method. Progression to invasive carcinoma after diathermy has not been demonstrated. A single treatment with electrocoagulation diathermy has proved consistently to be the most effective superficial ablative method for primary eradication of CIN whether deep, extensive, or of major severity.

Adult↗

PubMedDate not supplied

[Changes in the concentration of various collagen fractions after electric stimulation and electrocoagulation of the rabbit amygdaloid body].

Content of catecholamines, 11-hydroxycorticosteroids, free and bound hydroxyproline in blood as well as metabolism of collagen in rabbit aorta wall were studied after electrostimulation and bilateral electrocoagulation of brain amygdaloid complex. The stimulation was shown to alter the content of adrenal gland hormones and activated the collagen metabolism in aorta wall. After electrocoagulation within the first month content of noradrenaline, 11-hydroxycorticosteroids and accumulation of collagen in aorta tissue were decreased.

11-Hydroxycorticosteroids↗

PubMed1980

Endoscopic electrocoagulation combined with cimetidine. A pilot study of the applicability in active bleeding from gastroduodenal ulcer.

Preliminary results of endoscopic electrocoagulation combined with Cimetidine are reported in a prospective series of 60 consecutive patients presenting with active bleeding from gastroduodenal ulcer. Coagulation was considered during the initial diagnostic emergency endoscopy, which revealed an accurate identificaion of the bleeding source in 59 patients. Coagulation was accomplished without local complication in 53 patients. Permanent electrohaemostasis was achieved in 47 patients (78%), including 14 patients with clinical indication for surgical intervention. Coagulation could not be applied or failed in 13 patients, requiring operative haemostasis in 11 patients. Though not replacing emergency operation, endoscopic electrocoagulation combined with Cimetidine could be considered an alternative, particularly in patients of advanced age or in the presence of other severe illness.

Adolescent↗

PubMedDate not supplied

[Endoscopic treatment of colon vascular ectasia during bleeding with injection of adrenaline solution at 1:10,000 and monopolar electrocoagulation: an alternative approach. Case report].

Gastrointestinal bleeding accounts for 2% of all adult hospital admissions each year. Vascular ectasia is one of the most frequently reported cause of lower gastrointestinal bleeding. In almost 80% of patients with bleeding vascular ectasia will stop spontaneously, but will often recur. Many treatments are proposed like superselective catheterization with infusion of vasoconstrictor by angiography, Laser photocoagulation, heater probe, bipolar electrocoagulation, hot biopsy forceps, have been used in colonoscopy, but some effects are short-lived others are so expensive and without an effective treatment. The authors present one case of bleeding vascular ectasia during colonoscopy submitted to a new, cheap and effective approach with injection a 1:10,000 solution of epinephrine following electrocoagulation by colonoscopy.

Aged↗

PubMed1994

[Blindness due to electrocoagulation following functional endoscopic sinus surgery].

A case is presented with irreversible blindness in one eye and restriction of the infratemporal visual field in the other eye, due to electrocoagulation performed for delayed bleeding after functional endoscopic sinus surgery (FESS). Although blindness due to rhinosurgery is a well-known, but rare complication, a review of the recent literature did not reveal a similar incident. The use of electrocoagulation especially under bad visualization circumstances, which may be the case in postoperative bleeding following endoscopic sinus surgery, is strongly discouraged.

Adult↗

PubMed1993

Analgesia and sedation during percutaneous radiofrequency electrocoagulation for trigeminal neuralgia.

Patient comfort during percutaneous radiofrequency electrocoagulation for trigeminal neuralgia provides better working conditions for the surgeon and makes the patient more willing to return if a second procedure is necessary. This study evaluates five different regimens for analgesia and sedation including the standard of fentanyl and droperidol (Group A) and four other regimens, each containing midazolam. In a sixth group, droperidol was assessed for its antiemetic effects. Patients were medicated as follows: Group B, low-dose midazolam (3.0 mg average); Group C, low-dose midazolam (2.5 mg average) and oral diazepam (7.5 mg average) just before the procedure; Group D, high-dose midazolam (5.5 mg average); and Group E, high-dose midazolam (5.1 mg average) and oral diazepam. Medications were titrated to induce mild sedation in Groups A, B, and C and heavier sedation in Groups D and E. All patients received fentanyl and small doses of intravenous methohexital just before the cannula penetrated the foramen ovale and before radiofrequency electrocoagulation. At least 2 weeks later, patients reported their level of discomfort during the procedure and their recollection of the procedure on a 0 to 10 scale. In another group of 96 patients, 1.25 mg of droperidol was given in addition to the medications described for Groups D and E. There was a statistically significant improvement in comfort in Groups C, D, and E and added amnesia in Groups D and E. Vomiting occurred in none of the patients medicated with droperidol and in 5 of 143 patients who did not receive droperidol.(ABSTRACT TRUNCATED AT 250 WORDS)

Aged↗

PubMed2004

Preparation of nanoparticles by electrocoagulation from soluble exopolysaccharide produced by Claviceps viridis.

Electrocoagulation is an evolving technology that has been effectively applied for wastewater treatment but its applications in biotechnology and nanotechnology are very limited. This method was applied for the preparation of nanoparticles from soluble exopolysaccharide (EPS) produced by Claviceps viridis in a submerged batch culture. A cathode/anode pair electrode (Al or Fe) system was used for determination of the separation rates of electrocoagulation and the yields of EPS nanoparticles production. The separation rates of 0.170 +/- 0.003 mg EPS/sec (Fe electrodes) and 0.250 +/- 0.003 mg EPS/sec (Al electrodes) were calculated for voltage gradient 1 V/1 cm of electrodes distance and were constant during experiments. The specific yield of EPS nanoparticles production based on the consumed electric power was dependent on the material of the electrodes and its value was determined as 0.71 +/- 0.01 mg EPS/W for Fe electrodes and 0.91 +/- 0.01 mg EPS/W for Al electrodes, respectively.

Chemical Precipitation↗