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PubMedDate not supplied

Microendoscopic surgery of the hypopharyngeal diverticulum using electrocoagulation or carbon dioxide laser.

In 1964 we started to treat hypopharyngeal (Zenker's) diverticular endoscopically, using the procedure described by Dohlman. With the increase in the number of patients (274 patients up until 1982), the technique and the instruments used have improved. This paper describes the technique we have used since 1981, which involves exposure of the tissue bridge between esophagus and diverticulum with the aid of a specially designed scope and subsequent severance of this bridge under microscopic control. In 12 cases the bridge was severed by electrocoagulation, while the CO2 laser was used for this purpose in another 12 cases. Both techniques have given good results. Essential advantages or disadvantages of either of these methods could not be elicited. We regard the use of an operating microscope as a great improvement.

Diverticulum↗
PubMed1981

Evaluation of the anode and cathode for transcatheter electrocoagulation.

The effect of changing the size and position of the anode and cathode during direct current Transcatheter Electrocoagulation (TCEC) was evaluated in dogs. The results showed that there was no difference in the time required for vessel occlusion when the size and position of the electrodes were changed. However, there were differences noted in the amount of voltage needed to maintain the constant current. Based on these results, for TCEC we recommend positioning the largest possible guidewire anode against the vessel wall. The cathode should be a highly lubricated sponge covered Bovie ground plate.

Animals↗
PubMed2006

Parameter optimization and design aspect for electrocoagulation of silica nano-particles in wafer polishing wastewater.

A systematic procedure has been proposed for the design of a multi-channel, continuous-flow electrocoagulation reactor of mono-polar configuration for the removal of sub-micron particles from wastewater. Using the chemical-mechanical-planarization (CMP) process as the target source of wastewater, a series of laboratory-scale studies were conducted to determine the required operating conditions for the efficient removal of the ultrafine particles. These operating criteria included charge loading (> or = 8 F m(-3)), current density (> or = 5.7 A m(-2)), hydraulic retention time (> or = 60 min), as well as the initially operational pH (7 to approximately 10). Furthermore, a steady-state transport equation with second-order reaction kinetics was employed to describe the rate of coagulation as the rate-limiting factor. The actual kinetic constant determined from the laboratory-scale experiments was approximately 1.2 x 10(-21) m3 s(-1), which was three orders of magnitude smaller than that calculated based on Brownian diffusion during the coagulation. The model was subsequently validated with a series of experiments using a pilot-scale electro-coagulation reactor geometrically similar to the laboratory-scale reactor with nearly twenty times volumetric scale-up.

Bioreactors↗
PubMed1982

Peroperative electrocoagulation of endocervical mucosa and later carcinoma of the cervical stump.

The incidence of carcinoma of the cervical stump is, according to literature, 0.3--1.9%. During the years 1952--78, 2712 subtotal hysterectomies for benign conditions were performed in the Department of Obstetrics and Gynecology in Turku. During the operation the endocervical mucosa was electrocoagulated before closing the stump. Of these patients, 3 have since developed carcinoma of the cervical stump; thus the incidence in our material is 0.11%. It has been supposed that subtotal hysterectomy might have certain benefits in some cases. If so, and in view of the cancer risk being so low in our material, we feel that subtotal hysterectomy is still an applicable method.

Cervix Uteri↗
PubMed1985

Supravaginal uterine amputation with peroperative electrocoagulation of endocervical mucosa. Description of the method.

Discussion on the advantages of abdominal hysterectomy versus supravaginal uterine amputation has concentrated on the incidence of carcinoma in the remaining stump, mortality, and other serious complications. During the period 1952-78 we have performed 2712 supravaginal amputations with peroperative electrocoagulation of endocervical mucosa. The incidence of stump carcinoma was 0.11% in this material. In our prospective studies we have shown that supravaginal amputation has certain advantages over abdominal hysterectomy as regards long-term morbidity. In this paper we describe the method we are using when performing supravaginal uterine amputation.

Cervix Uteri↗
PubMed1976

Electrocoagulation biopsy of aberrant pancreas of the stomach. A case of aberrant gastric pancreas.

Histopathological diagnosis of submucosal tumors of the stomach has been difficult by conventional examination, e.g. roentgenography, gastroscopy and/or routine biopsy procedure. When endoscopic diagnosis of submucosal tumor is made, surgery is generally performed for tissue biopsy. We have been attempting to avoid such exploratory laparotomy to determine the histologic nature of small asymptomatic submucosal tumors of the stomach by a technic of endoscopic biopsy followed by electrocoagulation. With such a procedure, we have been able to diagnose a case of aberrant pancreas of the stomach. Our experience suggests that this technic is a safe and useful diagnostic tool.

Adult↗
PubMed1999

[Persistent anovulation following laparoscopic electrocoagulation of the ovarian surface in a patient with polycystic ovary syndrome (PCOS)].

We report on a 32-year-old woman with polycystic ovarian syndrome (PCOS) who showed no ovarian reaction (oestradiol increase, leading follicle) to clomiphene and gonadotropin stimulation before and after laparoscopic electrocoagulation of the ovarian surface (LEOS) although hormone values (LH-FSH ratio, androstenedione) after LEOS were within normal range. The case is discussed in terms of the literature.

Adult↗
PubMed1999

[Method of puncture electrocoagulation in the treatment of patients with varicose veins].

The author proposes to treat varicose veins by electrocoagulation using the needles of different diameter connected with the device EC 500 M. The method was used in treatment of 91 patients mostly with the 2nd and 3rd stages of chronic venous insufficiency. Ligation of the opening of the great subcutaneous vein and coagulation of it was simultaneously fulfilled in 56 patients. The treatment was performed in the out-patient clinic. In most of the patients (97.9%) good clinical and cosmetic results were noted. The method is sufficiently radical and allows the complications characteristic of sclerotherapy to be avoided.

Adolescent↗
PubMed2001

[Intracerebral hemorrhage induced by cerebral amyloid angiopathy in a patient during transurethral electrocoagulation].

A 68-year-old female with severe anemia due to a bleeding bladder was scheduled for emergency transurethral electrocoagulation surgery under general anesthesia. Her preoperative consciousness was clear. After preoxygenation, general anesthesia was induced with ketamine 40 mg and vecuronium 6 mg. After tracheal intubation, anesthesia was maintained with nitrous oxide, oxygen, and isoflurane (0.5-0.8%). During the operation, a large fluctuation in blood pressure was observed. The operation was completed uneventfully, but the patient did not recover smoothly from the anesthesia. A few minutes later, signs of neurological abnormality were observed, and an emergency brain CT scan was performed. Since CT images of the brain showed extensive intracerebral hemorrhage (ICH) and edema, emergency craniotomy was performed. Postoperative pathological examination showed that the cause of the ICH was cerebral amyloid angiopathy (CAA). Since the incidence of CAA is relatively high in elderly people and CAA can cause ICH due to fluctuation in blood pressure, prudent anesthetic management is needed for elderly patients undergoing emergency operations, particularly an operation leading to a decrease in blood volume.

Aged↗
PubMed2001

[Treatment of recurrent epistaxis with endoscopic electrocoagulation of the sphenopalatine artery].

INTRODUCTION: Treatment of posterior epistaxis with an intranasal balloon catheter (double balloon--Epistat) or posterior balloon (Foley catheter) as a posterior packing combined with a gauze plug as the anterior packing is often very troublesome for the patient. In the western world, the introduction of endoscopic electrocoagulation or ligation of the sphenopalatine artery has proved to be effective in the treatment of persistent posterior epistaxis, and it reduces morbidity. We have therefore introduced the same treatment modality. MATERIAL AND METHODS: We have used this technique so far on six patients with persistent posterior epistaxis. They were admitted to the ENT Department, H:S Rigshospitalet, Copenhagen, during the period 1.4.2000-15.11.2000. RESULTS: The treatment terminated the epistaxis in all cases. One patient had anterior epistaxis postoperatively, and this was treated with ligation of the arterior ethmoidal artery. The time spent in hospital after the operation was 1-2 days. CONCLUSION: This method is recommended for the treatment of persistent posterior epistaxis, when functional endoscopic techniques are mastered. Early treatment reduces morbidity and cuts down the stay in hospital.

Adult↗
PubMed1975

[Morphological characteristics of the structures delimiting the residual cavity of the hypophysis in rats after electrocoagulation of the median eminence of the hypothalamus].

By means of light and electron microscopy it has been shown that the remnant cavity of the hypophysis of intact and sham-operated rats on the side of the intermedial lobe is restricted with a continuous layer of epithelial cells with a well pronounced basal membrane. On the side of the frontal lobe the covering epithelium has peculiar "fenestra" through which adenocytes have free contacts with the remnant cavity. After electrocoagulation of the rostral area of the medial eminence, especially in remote postoperative terms, the remnant cavity enlarges up to gigantic size, contains a great amount of colloid, erythrocytes, fragments of cells of the anterior lobe of the hypophysis and secretory granules. The anterior epithelium is lacking on considerable areas and hence adenocytes are disposed in the cavity directly. All their organoids are preserved though a little changed, the cytomembrane is absent. On the apical surface of the posterior epithelium there appear large cytoplasmic protrusions which having separated enter the remnant cavity. The main provider of the "raw material" for colloid is likely to be the anterior lobe of hypophysis.

Animals↗
PubMed1954

Lumbar sympathectomy by electrocoagulation; its use in the management of certain vascular and visceral disorders.

Although normally the sympathetic nerves aid vascular dilatation during effort, in certain diseases of the vascular system they have a reverse effect. Abolition of sympathetic vasoconstrictive impulses by sympathectomy is the most effective treatment in some chronic peripheral vascular conditions. The authors have used electrocoagulation for a number of years and found it quick, effective and more likely to prevent regeneration of the affected nerves. Improvement was obtained by sympathectomy in arteriosclerotic vascular insufficiency, thromboangiitis obliterans, Raynaud's disease, reflex sympathetic dystrophy following thrombophlebitis or trauma, scleroderma, spinal sympathetic dystrophy and acquired megacolon. A case of causalgia was aggravated by the operation. Abstention from the use of tobacco appears to be sufficient for control of symptoms in many cases. Since vasospasm is manifested in many conditions long before a thrombotic catastrophe occurs, not only relief of symptoms but prevention of irreversible changes may be achieved by early operation.

Causalgia↗
PubMed1977

Female sterilization by laparoscopy: a comparative study of tubal occlusion with electrocoagulation and spring-loaded clip with one-year follow-up.

Findings are reported of a study conducted to evaluate and compare the safety and effectiveness of the spring-loaded clip and the electrocoagulation techniques of tubal occlusion via laparoscopy. The study was conducted from June, 1974 to June, 1975 on 300 cases in a Bangkok, Thailand hospital. Only patients who requested sterilization to limit family size were included in the study, and study patients were required to return for 6- and 12-month follow-up visits. To minimize possible patient and physician biases, all sterilization procedures were performed by one author (S. K.). and data were analyzed by the other author (S. P.). The specific operative technique was randomly assigned to the patient immediately prior to surgery, and the patient was unaware of the particular technique used. The findings showed no potentially serious complications for either technique. Neither complication rates nor incidence of pain were significantly different for the two procedures. The presence of adhesions was the most frequent cause of surgical difficulty in both techniques. No mechanical difficulties were reported. No pregnancies were reported within one year of sterilization.

Adolescent↗
PubMed2004

[Open hemorrhoidectomy with using the apparatus controlled bipolar electrocoagulation].

Hemorrhoids are known to be a widely spread disease. The aim of this study was to compare two methods of hemorrhoidectomy. The hemorrhoidectomy was performed on 262 patients with combined III-IV degree hemorrhoids, 130 patients being operated by the conventional method--Milligan-Morgan hemorrhoidectomy, 132 patients undergoing hemorrhoidectomy using a bipolar vessel sealing system. It was noted that the operation time was significantly shorter, postoperative pain and postoperative complications less frequent due to the bipolar device-controlled electrocoagulation.

Adult↗
PubMed1991

[Anterior ethmoidal electrocoagulation in the treatment of vasomotor rhinitis].

The anterior ethmoidal nerve (AEN) contains parasympathetic fibres of sneeze reflex arc, it is possible to obtain improvement of clinical symptoms of vasomotor rhinitis through anterior ethmoidal neurectomy. The authors performed intranasal electrocoagulation of AEN on 30 patients with vasomotor rhinitis and followed up for nine months. The results revealed that the total effective rate was 86%, and the procedure provides a simple, effective and painless method for treating vasomotor rhinitis.

Adult↗