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Results for “Electrocoagulation”

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PubMed1989

Multipolar electrocoagulation in the treatment of peptic ulcers with nonbleeding visible vessels. A prospective, controlled trial.

STUDY OBJECTIVE: To assess the efficacy and safety of treatment with endoscopic multipolar electrocoagulation in patients who have ulcers with nonbleeding visible vessels. DESIGN: Prospective, randomized, sham-controlled trial; patients were followed until their discharge from the hospital. SETTING: Urban, nonreferral county hospital. PATIENTS: Consecutive sample of 75 patients who had a bloody nasogastric aspirate sample, melena, or hematochezia; unstable vital signs, a transfusion of at least two units of blood in 12 hours, or a drop in the hematocrit of at least 0.06 in 12 hours; and endoscopic evidence of an ulcer with a nonbleeding visible vessel. INTERVENTION: Sham or real multipolar electrocoagulation at the time of diagnostic endoscopy. MEASUREMENTS AND MAIN RESULTS: Compared with the control group, the group receiving multipolar electrocoagulation showed marked improvement in the following variables; rebleeding (18% compared with 41%, P less than 0.05; difference, 23%; 95% CI, 3% to 43%); need for emergency surgery (8% compared with 30%, P less than 0.05; difference, 22%; CI, 5% to 39%); mean number of hospital days (4.3 +/- 0.4 compared with 6.2 +/- 0.7, P less than 0.05; difference, 1.9; CI, 0.4 to 3.4); and cost of hospitalization ($3790 +/- $410 compared with $5730 +/- $650, P less than 0.05; difference, $1940; CI, $400 to $3480). The mean transfusion requirement in the treatment group was 1.6 +/- 0.3 as compared with 3.0 +/- 0.6 units in the control group (P = 0.13; difference, 1.4; CI, 0 to 2.8). The overall mortality was extremely low: Only 1 (1%) of 75 patients died. Bleeding was induced in 7 (18%) of the 38 patients treated with electrocoagulation, and 1 patient required urgent surgery. CONCLUSIONS: Endoscopic treatment with multipolar electrocoagulation is beneficial in patients who present with major upper gastrointestinal hemorrhage and are found to have an ulcer with a nonbleeding visible vessel.

Adult↗

PubMed1976

Endoscopic electrocoagulation of upper gastrointestinal hemorrhage.

Endoscopic electrocoagulation was performed on 40 occasions for 38 patients with bleeding gastrointestinal lesions. Cessation of bleeding was achieved in 95%. Fifteen gastric ulcers, 14 duodenal ulcers, six Mallory-Weiss tears, one gastric varix, one hemorrhagic antral gastritis, and one esophageal ulcer were successfully electrocoagulated. Three duodenal and three gastric ulcers rebled. One duodenal ulcer and one gastric ulcer were successfully reelectrocoagulated. Failure to stop bleeding by electrocoagulation occurred in one Mallory-Weiss tear and one duodenal ulcer. There was no morbidity nor mortality attributed to endoscopic electrocoagulation. A retrospective cost analysis showed that the cost of hospitalization was less in patients treated by electrocoagulation. Patients so treated were hospitalized for a shorter duration.

Adolescent↗

PubMed2005

Evaluation of bipolar electrocoagulation applied to biofiltration for phosphorus removal.

To reduce the residual organic matter and phosphorus contained in secondary effluent, a biofiltration system combined with electrocoagulation using bipolar iron electrodes was evaluated as a supplementary treatment to existing small-community sewage treatment. Based on the results of batch tests, bipolar electrocoagulation (BEC) was found to be more effective on phosphorus removal than monopolar electrocoagulation (MEC) but energy consumption was less in monopolar electrocoagulation. Optimum conditions of BEC to treat the secondary effluent were current density 15 A/m2, electrode spacing 1 cm and pH < 8. The removals of COD(Cr) and phosphorus by biofiltration system without BEC were 69.1% and 9.6%, respectively. However, biofiltration system combined with BEC showed 76.6-83.7% and 70.7-93.0% removal for COD(Cr) and phosphorus respectively. Extraordinary increase in phosphorus could be achieved by introducing electrocoagulation to biofiltration, and BEC/biofiltration system was evaluated to be applicable to existing small-community sewage treatment plants as a supplementary process.

Biodegradation, Environmental↗

PubMed1991

[Endoscopic bipolar electrocoagulation in gastroduodenal hemorrhage].

During a one year period (1988-1989), 40 consecutive patients were submitted to emergency gastroduodenoscopy because of severe gastroduodenal bleeding. Indications for emergency endoscopy were red or black haematemesis with melaena or melaena with signs of haemodynamic instability. Twenty-nine of the patients fulfilled the criteria for emergency surgery because of major bleeding and alterated circulation. Twenty-five with surgery demanding gastroduodenal ulcer bleeding and one with Dieulafoy's erosion, were treated with endoscopic bipolar electrocoagulation. Primary haemostasis was achieved in 20 patients (80 per cent). Definitive haemostasis was obtained in 11 patients (44 per cent) with major ulcer bleeding. Nine patients bled again after electrocoagulation, and seven of these underwent surgery. The mortality was 20 per cent (five patients). In eight patients with minor active bleeding or visible vessels, electrocoagulation resulted in 100 per cent definitive haemostasis. No complications attributable to the electrocoagulation were observed. Endoscopic haemostatic treatment with e.g. bipolar electrocoagulation should be the first treatment in patients with gastroduodenal bleeding as emergency operation can be avoided in approximately 50 per cent of the cases.

Adult↗

PubMed1990

Bacterial transference during electrodesiccation and electrocoagulation.

Electrodesiccation and electrocoagulation are commonly used to control bleeding and destroy tissue. In certain outpatient settings, the clinician routinely uses one of these electrosurgical modalities on successive patients without sterilization or antisepsis of the treatment electrode tip. In controlled laboratory experiments using electrodesiccation and electrocoagulation, we investigated bacterial transference of Staphylococcus aureus from inoculated tissue to sterile electrode tips and from inoculated electrode tips to sterile tissue. With use on inoculated tissue, sterile electrode tips remained sterile after electrocoagulation but not after electrodesiccation. Bacterial transference from inoculated electrode tips to sterile tissue occurred with electrodesiccation but not with electrocoagulation. These results are consistent with bacterial destruction by electric current and suggest that bacterial transference via the treatment electrosurgery electrode from one patient to another is possible but much more probable during electrodesiccation than during electrocoagulation.

Animals↗

PubMed1980

A comparison of cellular immunity in patients undergoing electrocoagulation and resection for adenocarcinoma of the rectum.

Leukocyte migration inhibition assays in patients with carcinoma of the colon and rectum were evaluated in patients treated by electrocoagulation, abdominoperineal resection or low anterior resection and those with Duke's A and B lesions. Assays were performed before treatment, immediately after treatment and two to four months later. No statistically significant differences in cell mediated immunity, measured by leukocyte migration inhibition, were noted between those in the electrocoagulated group and those undergoing resection. However, electrocoagulation does appear to cure some carcinomas of the rectum and does afford a superior quality of survival. It is, however, associated with a higher recurrence rate than resection. Therefore, the decision to use electrocoagulation should not be based upon its effect on immune parameters. Rather, the choice between electrocoagulation, local resection and abdominoperineal resectin is based upon clinical judgment in which the risk of recurrence or metastases must be weighed against a superior quality of survival.

Adenocarcinoma↗

PubMed1996

Electrocoagulation versus the Endo GIA in LAVH

We compared the operating room time using bipolar electrocoagulation and Endo GIA staples in 11 women undergoing laparoscopic-assisted vaginal hysterectomy (LAVH). Electrocoagulation was used on one side of the uterine pedicles and the Endo GIA stapling device on the contralateral pedicles. Each patient was randomized to the method used on each side and which method was used first. All procedures were symmetric, with or without bilateral salpingo-oophorectomy. Data were compared using the paired t test. Normal distribution was assessed by the Shapiro-Wilks test and the K-S (Lilliefors) test. The mean (± SD) procedure times for electrocoagulation and Endo GIA were 13.03 ± 1.34 minutes and 4.4 ± 0.33 minutes, respectively. This resulted in a mean difference of 8.66 ± 3.62 minutes (p <0.001). Patients requiring longer electrocoagulation times also required longer Endo GIA stapling times (p = 0.034). The Endo GIA stapling device required significantly less time to perform LAVH compared with electrocoagulation. The difference of 8.66 minutes, if multiplied by 2 (to account for a bilateral procedure), may or may not be clinically or economically significant, depending on hospital costs and charges for instruments, operating room time, and anesthesia.

Journal Article↗

PubMed1976

Bleeding following tonsillectomy. A study of electrocoagulation and ligation techniques.

The efficiency of electrocoagulation (spot or zonal) and ligation for the control of bleeding was compared in 376 patients with tonsillectomy. Electrocoagulation and ligation was used in the same number of patients (188) in each group. A notable reduction in operative time (40%) was seen in cases in which spot or zonal electrocoagulation was employed. More morbidity was found in cases treated with zonal electrocoagulation. Both techniques were concluded to be equally effective in the control of bleeding following tonsillectomy.

Adolescent↗

PubMed1985

Palliative and curative electrocoagulation for rectal cancer. Experience and results.

The 18-year experience with electrocoagulation of rectal cancer in 51 patients is reported. The "boiling" technique used in this study is described. Electrocoagulation for palliative purpose was carried out in 18 patients. One patient is alive without evidence of disease after 4 years. The remaining 17 patients died within 2 years. Electrocoagulation for cure was performed in 33 patients. In two patients abdominoperineal resection was needed for residual tumor. All cases were strictly followed, and none of the patients died of cancer. Recurrent tumor was never seen, and the crude 5-year survival was 71%. The authors describe the criteria for selection any patient should meet in order to be eligible for electrocoagulation with curative purpose and advocate caution in making the choice between radical and local surgery.

Adult↗

PubMedDate not supplied

The effect of electrocoagulation on the sinusoids in the human penis.

We give an overview of patients who have undergone removal of the deep dorsal vein for venous grafting in treating Peyronie disease with or without a Bovie effect. From June 1998 to May 2002, 23 men received grafting of the deep dorsal vein for morphologic correction. Among them, 7 men underwent electrocoagulation treatment of bleeders per surgeons' customary practice during the entire procedure and were categorized as the electrocoagulation group. Sixteen patients received simple ligation of bleeding stumps, with 6-0 nylon sutures, and were classified as the ligation group. All were followed for satisfaction of penile morphology and assessed by the abridged 5-item version of the international index of erectile function (IIEF-5) scoring for erectile capability. In the electrocoagulation group, a mean preoperative IIEF-5 score of 22.5 +/- 1.6 decreased to a mean postoperative IIEF-5 score of 17.9 +/- 4.1. Among them 2 men (28.6%) had sustained postoperative infection. Follow-up cavernosograms showing relatively poor filling are commensurate with intracavernosal fibrosis. In the ligation group, however, the mean IIEF-5 score was 22.3 +/- 1.9 preoperative and 22.9 +/- 2.0 postoperative. Although there was no statistical significance between the 2 groups in preoperative IIEF scores, there was a significant difference between groups postoperatively. Application of electrocoagulation appears to be disadvantageous in preserving erectile tissues. A Bovie effect should be avoided in this erectile organ in order to preserve erectile capability and avoid infection.

Adult↗

PubMed1982

Electrocoagulation of rectal cancer.

Electrocoagulation is an effective treatment modality for localized cancer of the distal rectum. Proper selection remains the key to successful treatment. Of potentially curable patients with cancer of the rectum followed up for a median of five years, 69 per cent had no evidence of cancer at the end of the study period. Gross tumor morphology defined two distinct groups with regard to outcome after electrocoagulation. Ninety-two per cent of patients with polypoid/exophytic tumors as compared to 33 per cent of patients with ulcerative lesions had successful treatment. Based on these results, the authors believe that lesions that are exophytic represent early cancers with a low incidence of nodal spread and, as such, can be treated by electrocoagulation with confidence. As a palliative measure, the the authors found electrocoagulation to yield equivocal results.

Adenocarcinoma↗

PubMed1990

Use of the argon beam electrocoagulator for performing pulmonary wedge resections.

The argon beam electrocoagulator (ABC) is a new form of electrocautery that is thought to be more effective than standard electrocautery. It has been used primarily in procedures associated with major blood loss such as liver transplantation and laparotomy for trauma. It has not been used in thoracic operations. We evaluated the safety and efficacy of the argon beam electrocoagulator for performing pulmonary wedge resections in an animal model by comparing it with standard electrocautery and suture closure. Variables used to compare the three methods of resection included perioperative blood loss, duration of chest tube air leak, and depth of necrosis and severity of inflammatory reaction in the lung at ten days and 3 weeks after resection. The argon beam electrocoagulator was as effective as standard electrocautery and suture closure in controlling air leaks, and caused less acute tissue injury than standard electrocautery. The argon beam electrocoagulator provides a safe and effective method for performing small pulmonary wedge resections, and should be evaluated in the clinical setting for this purpose.

Animals↗

PubMed2004

Treatment of chemical mechanical polishing wastewater by electrocoagulation: system performances and sludge settling characteristics.

Treatment of copper chemical mechanical polishing (CMP) wastewater from a semiconductor plant by electrocoagulation is investigated. The CMP wastewater was characterized by high suspended solids (SS) content, high turbidity (NTU), chemical oxygen demand (COD) concentration up to 500 mgl(-1) and copper concentration up to 100 mgl(-1). In the present study, electrocoagulation was employed to treat the CMP wastewater with an attempt to simultaneously lower its turbidity, copper and COD concentrations. The test results indicated that electrocoagulation with Al/Fe electrode pair was very efficient and able to achieve 99% copper ion and 96.5% turbidity removal in less than 30 min. The COD removal obtained in the treatment was better than 85%, with an effluent COD below 100 mgl(-1). The effluent wastewater was very clear and its quality exceeded the direct discharge standard. In addition, sludge settling velocities after electrocoagulation were measured and the data were employed to verify the empirical sludge settling velocity models. Finally, the sludge settling characteristic data were also utilized to establish the relation between the solids flux (G) and the initial solids concentration.

Aluminum↗

PubMed2005

A randomised trial of ultrasonic dissection versus electrocoagulation to reduce lymphatic complications after surgery for recurrent sapheno-femoral incompetence.

OBJECTIVE: Prospectively to compare lymphatic drainage after ultrasonic dissection, an electrocoagulation technique and sharp dissection in the groin during surgery for recurrent sapheno-femoral incompetence. DESIGN: Prospective, randomised study comparing three surgical techniques. METHODS: Thirty-six consecutive patients undergoing surgery for recurrent sapheno-femoral incompetence were randomised. Twelve patients underwent dissection with ultrasound, 12 with electrocoagulation and 12 controls had sharp dissection with ligation of scar and lymphatic tissue using absorbable suture material. RESULTS: The mean drain output per patient was 13.5 ml in the ultrasonic group, 15.4 ml in the electrocoagulation group and 8.3 ml in the suture ligation group. Six minor cases of lymphatic leakage occurred in the ultrasonic group. This resulted in no clinical problem. There were no other significant differences between the three groups. CONCLUSIONS: There is no detectable advantage for the use of ultrasound or electrocoagulation in recurrent saphenous high ligation compared to sharp dissection.

Adult↗

PubMed2006

Detoxification of olive mill wastewater by electrocoagulation and sedimentation processes.

Olive mill wastewater (OMW) is characterised by its high suspended solids content (SS), high turbidity (NTU), chemical oxygen demand (COD) concentration up to 100 gl(-1) and toxic phenolic compounds concentration up to 10 gl(-1). This study examined the effect of a physico-electrochemical method to detoxify olive mill wastewater prior an anaerobic biotreatment process. The proposed pre-treatment process consisted in a preliminary electrocoagulation step in which most phenolic compounds were polymerised, followed by a sedimentation step. The BOD(5)/COD ratio of the electrocoagulated OMW increased from 0.33, initial value, to 0.58. Furthermore, the sedimentation step yielded the removal of 76.2%, 75% and 71% of phenolic compounds, turbidity and suspended solid, respectively, after 3 days of plain settling. The combination of electrocoagulation and sedimentation allowed a COD reduction and decoloration of about 43% and 90%, respectively. This pre-treatment decreases the inhibition of Vibrio fisheri luminescence by 66.4%. Continuous anaerobic biomethanization experiments conducted in parallel with raw OMW and electrocoagulated OMW before and after sedimentation at a loading rate of 6g COD l(-1)day(-1), proved that the final pre-treated OMW was bioconverted into methane at high yield while raw OMW was very toxic to anaerobic microorganisms.

Aliivibrio fischeri↗

PubMed1993

Endometrial histology after electrocoagulation using different power settings.

OBJECTIVE: To study endometrial histology after electrocoagulation in an in vitro model using 50 watts (W) and 100 W of coagulation current and determine the depth of endometrial destruction and survival, if any, of glands beneath this zone. DESIGN: Twenty fresh uteri of similar weights and dimensions were obtained from patients undergoing hysterectomy for benign disease. Specimens were bivalved into anterior and posterior walls and each wall divided in half. Endometrial electrocoagulation was carried out with a 5-mm probe at 50 W and 100 W applied to anterior and posterior quarters of the specimen, respectively. The adjacent untreated endometrial surfaces served as controls. Specimens were formalin-fixed, embedded in paraffin, and sections stained with hematoxylin and eosin. MAIN OUTCOME MEASURES: The number and morphology of the endometrial glands were counted and classified manually for each section and compared between each power setting and controls. RESULTS: Histologic examination revealed morphologically normal glands in all specimens beneath the zone of destruction regardless of power setting. Both power settings produced significant focal and diffuse glandular and stromal destruction when compared with controls. Significant differences were noted in the number of normal glands after treatment with 50 W (71.33 glands +/- 76.44 [mean +/- SD]), 100 W (21.11 +/- 35.71) and untreated controls (240.16 +/- 110.81). Tissue destruction increased with increasing power, and there were significant differences in the percentage of morphologically normal, surviving glands between 50 W (11.7% +/- 11.4% [mean +/- SD]) and 100 W (4.9% +/- 10.9%). CONCLUSION: These data suggest that electrocoagulation may result in a variable degree of endometrial destruction dependent on power. Viable glands and stroma may survive beneath the zone of destruction regardless of power. Such variations in endometrial insult in an in vitro model may explain, in part, the variable clinical results of endometrial electrocoagulation. The survival of glands beneath the zone of destruction in this model raises the theoretical concern for occult malignant changes and leaves open to question the exact role and mode of hormonal therapy during the menopause after endometrial ablation.

Electricity↗

PubMed1999

Laser and multipolar electrocoagulation ablation of early Barrett's adenocarcinoma: long-term follow-up.

BACKGROUND: Endoscopic ablation of Barrett's esophagus, including associated dysplasia and adenocarcinoma, can be achieved by various techniques, but few long-term results are available. The aim of our study was ablation of intramucosal adenocarcinoma with a combination of Nd:YAG laser plus multipolar electrocoagulation. METHODS: Patients with documented Barrett's esophagus and adenocarcinoma who either had refused surgery or were poor candidates for surgery because of high risk were offered endoscopic therapy. Patients underwent therapy with Nd:YAG laser and multipolar electrocoagulation. They were treated with omeprazole (20 mg twice daily) as maintenance therapy. RESULTS: Six patients were enrolled in the study over a 7-year period. All were men with a mean age of 78.2 years. The mean length of Barrett's esophagus was 6.0 cm (range, 3 to 10 cm). Seventeen Nd:YAG laser (mean, 2.8/patient) and 20 multipolar electrocoagulation (mean, 3.3/patient) sessions were used during the study period. All patients had a complete initial response to therapy. One patient on chronic immunosuppressive medications had recurrence of the tumor after an initial complete response (36-month follow-up). Two patients have no evidence of Barrett's esophagus, and 3 patients have residual intestinal metaplasia on biopsy of an irregular appearing "neo" Z-line. Mean follow-up in this group is 3.4 years (range, 9 to 86 months). CONCLUSIONS: Laser photocoagulation and multipolar electrocoagulation can be successfully and safely used to ablate intramucosal adenocarcinoma in the setting of Barrett's esophagus. Patients remain functional with normal swallowing.

Adenocarcinoma↗

PubMed1980

Electrocoagulation induced immunity--an explanation for regression of neuroblastoma.

Electrocoagulation of tumor potentiates the host's antitumor immune response. Utilizing a murine neuroblastoma system and comparing surgical excision versus electrocoagulation we have demonstrated that electrocoagulation potentiates the immunogenicity of the neuroblastoma, potentiates the host antitumor immune response to residual primary tumor, and potentiates the host antitumor immune response to distant autochthonous neuroblastoma. These data suggest that such a heightened antitumor response might account for spontaneous regression of massive clinical neuroblastomas treated by electrocoagulation, and they suggest that electrococoagulation may be useful as a treatment modality for cytoreductive neuroblastoma surgery.

Animals↗