Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “CAUTERY AND CAUTERIZATION”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 253 records · Page 14Linked to original sources
PubMed2003

Special visual effects for surgical simulation: cauterization, irrigation and suction.

Simulation of cauterization and irrigation forms an important part of a virtual laparoscopic trainer. Typically, they are carried out to stop the intragastric bleeding due to an accidental cut by the surgeon. In this paper, we present a method to simulate these special visual effects in an integrated fashion in real-time. We have simulated cauterization and irrigation using a particle-based system. A physics-based model is used to simulate accumulation and removal of fluids. The integrated special effects were implemented and tested in a prototype environment.

Cautery↗
PubMed2003

Cauterization of inferior nasal turbinate for idiopathic headache.

OBJECTIVE: Idiopathic headache is a stressful complaint, whose treatment is not well established. Our study is an attempt to examine the relationship between idiopathic headache and inferior turbinate cauterization as a surgical treatment, and to explain the central physiological effect of cauterization. METHODS: Thirty-four patients, 15 females and 19 males complaining of idiopathic headache were treated by inferior turbinate cauterization. Cauterization of the inferior-medial aspect of the turbinate was carried out once under local anesthesia for few seconds. This study was performed between November 1993 and December 1996, a joint project of the Zarka Government Hospital, Zarka and Faculty of Medicine, University of Jordan, Amman, Jordan. RESULTS: More than 82% of the patients showed significant improvement in the sense of decreased headache. CONCLUSION: Cautery of the nasal turbinate could be a novel method for treatment of idiopathic headache.

Adult↗
PubMedDate not supplied

Immunobiology of Langerhans cells on the ocular surface. II. Role of central corneal Langerhans cells in stromal keratitis following experimental HSV-1 infection in mice.

Stromal keratitis is typically the consequence of infection with herpes simplex virus type 1 (HSV-1). The pathogenesis of this disease remains elusive, although it is generally believed that there is an important immunological component. It has been proposed that stromal keratitis is mediated by virus-specific T lymphocytes of the delayed hypersensitivity type. However, while virtually all individuals infected with HSV-1 develop delayed hypersensitivity, only a small fraction actually develop stromal keratitis. To explain this discrepancy, we reasoned as follows: epidermal Langerhans cells are believed to be crucial to the induction of delayed hypersensitivity; since the cornea normally contains few or no cells of this type, the presence of Langerhans cells in the central corneal epithelium at the time of virus infection might promote the development of stromal keratitis. To test this hypothesis, cautery wounds of central regions of mouse corneas were used to induce migration of Langerhans cells into the corneal epithelium. These mice were then infected with HSV-1 on the ipsilateral snout, an infection that results in zosteriform spread of virus via the trigeminal nerve into the anterior segment of the ipsilateral eye within 3-5 days after inoculation. We found that the eyes of cauterized mice displayed a very high incidence of severe stromal keratitis. By contrast, non-cauterized corneas of control, snout-infected mice displayed much less evidence of stromal disease. Moreover, the rapidity of onset of systemic delayed hypersensitivity to HSV-1 was accelerated in the mice with cauterized corneas, compared to the controls.(ABSTRACT TRUNCATED AT 250 WORDS)

Animals↗
PubMed1983

The effect of corneal trephination on neovascularization.

In order to investigate a neural influence on corneal neovascularization, we attempted to induce new vessel growth within a denervated zone produced by trephination. The stimulus for vascularization was cauterization central to the trephined margin. We demonstrated that in corneas denervated and stimulated in this manner neovascularization did not occur. This finding supports our hypothesis of a neural influence on neovascularization.

Angiogenesis Inducing Agents↗
PubMed1998

Regulation of alpha7 nicotinic acetylcholine receptors in mouse somatosensory cortex following whisker removal at birth.

Previous studies in postnatal mouse demonstrating high levels of alpha7 nicotinic acetylcholine receptors on layer IV somatosensory cortical neurons coincident with the onset of functional synaptic transmission led us to investigate whether the number and/or the localization of these receptors could be regulated by activity. Accordingly, we examined alpha-bungarotoxin binding in mouse somatosensory cortex following removal of all of the vibrissae on one side of the face, either by vibrissal follicle cauterization or daily plucking beginning on the day of birth. Following vibrissa plucking, the levels of [125I]alpha-bungarotoxin binding on postnatal day 6 were significantly higher (23 +/- 7%) in the denervated cortex (contralateral to the peripheral manipulation) than the intact cortex. Cauterization also resulted in significantly higher (14 +/- 3%) [125I]alpha-bungarotoxin binding in the contralateral vs. the ipsilateral cortex. In contrast, there was no difference in [125I]alpha-bungarotoxin binding in the left and right cortices of unoperated control animals. At postnatal day 14, levels of [125I]alpha-bungarotoxin binding in layer IV were very low in control animals as well as in animals subjected to whisker plucking or cautery. These findings suggest that reducing activity in the somatosensory pathway regulates the density of alpha7 nicotinic acetylcholine receptors during the first postnatal week. However, the normal decrease in receptor density that is seen during the second postnatal week of development proceeds despite altered sensory activity.

Animals↗
PubMed2006

Acanthamoeba keratitis: clinical characteristics and management.

OBJECTIVE: To review the clinical characteristics, treatment, and outcome of patients with Acanthamoeba keratitis (AK). DESIGN: Retrospective, noncomparative, interventional case series. PARTICIPANTS: Twenty consecutive patients with AK were referred to the Beijing Tongren Hospital, Capital University of Medical Science, China. METHODS: Retrospective analysis of medical records from 20 consecutive patients with AK between December 1, 1997 and March 30, 2003. Risk factors, laboratory investigations, clinical manifestations, treatments, and outcomes were analyzed. MAIN OUTCOME MEASURES: Best-corrected visual acuity (BCVA) at the end of follow-up. RESULTS: Of the 20 patients presented in this series, 12 patients were students and 6 were farmers. Risk factors included contact lens wear (12/20) and trauma (6/20). Corneal ulceration, diffuse stromal infiltration, and ring infiltration were the main clinical manifestations. The diagnosis of all patients was based on the laboratory investigation. Smear and culture positive specimens were 19 of 20 and 12 of 20, respectively. Images of cysts were demonstrated with confocal microscopy in 4 patients. Treatment was combined instillation of chlorhexidine (0.02%), neomycin (0.5%), metronidazole (0.4%), and/or lesion cauterization with chlorhexidine (1%), and corneal lesion debridement. The mean duration of therapy was 70 days (range, 18-150 days). Nineteen lesions healed with scar formation. The BCVA was better or equal to 20/100 in 7 eyes. CONCLUSIONS: Early diagnosis of AK is the key challenge in clinical practice. The combined use of antiacanthamoeba agents, debridement, and cauterization may be a best choice of treatment for patients who are diagnosed early in the course of their disease.

Acanthamoeba Keratitis↗
PubMed2004

Cauterization of access tract for nephrostomy tube-free percutaneous nephrolithotomy.

BACKGROUND AND PURPOSE: Percutaneous nephrolithotomy (PCNL) is now a popular method for removal of renal and ureteral stones. Placement of a nephrostomy tube after the completion of PCNL has been considered a standard procedure by most urologists, but some authors have recently challenged this practice. Bleeding is one of the most prevalent problems after nephrostomy tube-free percutaneous renal surgery. To diminish the possibility of postoperative bleeding, we cauterized the PCNL tract to make it bloodless. The efficacy and safety of this procedure were reviewed in this study. PATIENTS AND METHODS: From March 2001 to March 2003, 51 patients underwent PCNL with a one-stage procedure and a single access tract. The stone size ranged from 1.0 to 7.0 cm (mean 2.7 +/- 1.4 cm). A holmium:YAG laser and pneumatic lithotripter were used. After stone extraction, a 6F double-J catheter was inserted antegrade. The access tract was checked, and the bleeding points were cauterized. No nephrostomy tube was inserted, but a Penrose drain was left overnight. Perforation of the collecting system was not a contraindication to tubeless PCNL. RESULTS: The stone-free rate was 80.4%, including five patients with complete staghorn stones. Twenty-one patients required postoperative analgesics. Only one patient had urine leakage for longer than 24 hours. Transient low fever was noted in five patients, but no patient experienced severe urinary tract infection. Delayed hemorrhage (1 week after the operation) secondary to irritation by the double-J ureteral stent was noted in one patient. The average postoperative hospital stay was 2.2 days (range 1-3 days). No patient required a blood transfusion. No urinoma was noted on the postoperative ultrasound follow-up. CONCLUSION: Nephrostomy tube-free percutaneous renal surgery is a safe and effective procedure for selected patients with minimal hemorrhage after PCNL. Cauterization of tract bleeding points may make this modification a more secure procedure and make it suitable for more patients.

Adult↗
PubMed1979

Cage size and exercise affects infarct size in rat after coronary artery cauterization.

Left coronary occlusion in the rat was performed by cornary artery cauterization. A small amount of myocardial damage at the site of occlusion was noted, and myocardial infarction occurred in the distal distribution of the obstructed coronary. The effects of cage size and level of physical activity on estimated infarct size (as measured by creatine kinase depletion) 48 h after occlusion were determined. Isolation in small cages and moderate treadmill exercise resulted in an approximate doubling of the amount of infarction when compared to grouping of rats in large cages. Mild exercise did not increase infarct size. Total urinary catecholamines in normal rats placed in small cages for 48 h were elevated when compared to unconfined rats in larger cages. Cornary artery occlusion by cauterization is an easily performed technique. Cage size and level of activity (and their effects on sympathoadrenal function) are important independent determinations of infarct extent after coronary occlusion in the rat.

Animals↗
PubMed2006

Trabeculectomy with mitomycin C combined with direct cauterization of peripheral iris in the management of neovascular glaucoma.

PURPOSE: To determine the outcomes of trabeculectomy with mitomycin C (MMC) combined with direct cauterization of peripheral iris before iridectomy in the management of neovascular glaucoma (NVG), and to demonstrate the effect of this surgical technique on decreasing the incidence of intraoperative bleeding and early postoperative hyphema. METHODS: This prospective study was based on 72 eyes of 72 patients with NVG who underwent primary trabeculectomy with MMC combined with direct cauterization of peripheral iris before iridectomy. The patients were evaluated for intraoperative and early postoperative complications such as hyphema, and operative success rates. Operative success was defined as an intraocular pressure (IOP) < or =22 mm Hg (+/-medical therapy) in the absence of phthisis. The mean IOP and the mean number of antiglaucomatous medications at baseline and at the posttrabeculectomy sixth month were compared by paired Student t test. RESULTS: The mean preoperative IOP was 39.3+/-5.6 mm Hg (range, 29 to 60 mm Hg) whereas it was 20.02+/-4.3 mm Hg (range, 14 to 38 mm Hg) at the postoperative sixth month. The mean preoperative number of antiglaucoma medications was 3.2+/-0.4 (range, 2 to 4) but it reduced to 1.8+/-0.6 (range, 1 to 4) at the postoperative sixth month. These differences were statistically significant (P<0.00001). The IOP was < or =22 mm Hg (+/-medical therapy) in 69 eyes (95.8%) at the postoperative first week, in 62 eyes (86.1%) at the postoperative first month, in 60 eyes (83.3%) at the postoperative third month and in 48 eyes (66%) at the postoperative sixth month. Hyphema occurred in 15 eyes (20.8%) within the first week of the surgery. In 12 eyes it was transient; however, in 3 eyes irrigation of anterior chamber was required. CONCLUSIONS: Trabeculectomy with MMC combined with direct cauterization of peripheral iris decreases the incidence of both intraoperative bleeding, and early postoperative hyphema, and provides reduction of IOP and the number of antiglaucomatous medications in cases with NVG in a 6-month follow-up period.

Adult↗
PubMed1990

Postponing the limits. Multiple and repeated pulmonary metastasectomy by parenchym sparing electrocautery excision.

Due to the continuous improvement and effectiveness of the chemotherapeutics, the role of the surgical resections of metastases is changing. In the period 1954-1975 we removed from 35 patients 48 metastases, in the period 1976-1985 from 45 patients 102 metastases, while in the period 1986-1989 from 47 patients 200 metastases were removed. The ratio of 1.3 metastasectomy per patient in the first group is corresponding to the 4.5 ratio metastasectomies in the last group. The number of classical lobectomies decreased in favour of the segmental and wedge resections. Based on the case histories of non seminomatous testis tumors, finally an extraanatomical resection of the metastases minimizing all unnecessary waste of functional lung parenchyma became an obvious consequence of this development. Since 1986 we adapted and used the technique of extraanatomical pulmonary resections by electrocautery 92 times. It appeared that appropriate use the cutting and coagulating modality of electrocautery offers a safe, easy, fast, highly efficient and selective tool to divide and distinguish the normal lung parenchyma from the bronchial, vascular and pathologic structures. The cautery condensed surface of the remaining parenchyma is not difficult to control for hemostasis and air leakage and can be easier sutured. In case of doubts or deep intrapulmonal defects the fibrin glue (Tissucol) offers an extra security by sealing the irregular of large defects. The microscopical examination can distinguish on the specimen a thin layer of intact lung parenchyma. The surface of this--similar of the surface of the remaining resection plane--shows a "sealed membrane" of cauterized alveoli, bronchioli or vessels.

Electrocoagulation↗
PubMed1983

Macroscopic and microscopic changes in the fallopian tube after bipolar cauterization.

A total of 43 patients who had undergone laparoscopic tubal occlusion by means of bipolar cauterization underwent bilateral salpingectomy 6-30 months later. The macroscopic and microscopic changes in the fallopian tubes are described. Although 35 patients appeared to have occluded tubes on macroscopic examination, only 22 showed occlusion on microscopic examination.

Cautery↗
PubMed2003

Fourth branchial pouch sinus with recurrent deep cervical abscesses successfully treated with trichloroacetic acid cauterization.

A previously healthy 13-year-old girl presented with a left-sided deep cervical abscess. A CT scan demonstrated an abscess in the lower neck, anterior to the common carotid artery. Treatment with i.v. antibiotics and incision drainage resolved the condition. A recurrence of the abscess 7 months later was treated identically. Further investigations with MRI showed a 2-3-mm wide, 10-mm long structure in the lateral aspect of the left thyroid lobe. A barium radiograph depicted a narrow, 20-mm long fistula originating from the left pharynx. At endoscopy a 2-3-mm wide opening was found at the left pyriform sinus apex. This, together with the radiological findings, verified the diagnosis of a 4th branchial pouch sinus. The recurrence of the abscess may have been due to contamination by infectious pharyngeal secretions. Although radical surgical excision is traditionally recommended for this condition a non-invasive treatment, namely chemocauterization with 40% trichloroacetic acid (TCA), was chosen in this case. Three cauterizations were needed to close the pyriform sinus opening. To date (Month 14) there has been no recurrence of the cervical abscesses. TCA chemocauterization seems to be a safe first-line treatment for patients with a pyriform sinus fistula.

Abscess↗
PubMed1985

Vasectomy by electrocautery: outcomes in a series of 2,500 patients.

The effectiveness of the electrocautery technique of vasectomy is compared with the more commonly used ligation technique. Twenty-five hundred cases of vasectomy by electrocautery are presented. The men were Americans who selected vasectomy over a period of 11 years. All cases were performed by one unvarying technique. The vas was cut, and the lumen was cauterized. One end was covered, and all bleeding sites were cauterized. The failure rate in this series was 0.24 percent. A review of the world literature shows that failure rates of the common ligation techniques ranged from 1 to 6 percent. It appears that the electrocautery technique has about one tenth the failures of the standard ligation technique.

Adolescent↗
PubMed1977

Regeneration of corneal epithelial basement membrane following thermal cauterization.

Thermal cauterization of the corneas of nine rhesus monkeys was performed by multiple thermokeratophore applications at temperatures of 90 degrees or 120 degrees C. Significant clinical observations included the resteepening of corneal curvature, delayed epithelial healing, stromal haze or scarring, and peripheral neovascularization. Reestablishment of tight adhesion of the regenerated epithelium to Bowman's layer required approximately 6 weeks. By transmission and scanning electron microscopy, the original basement membrane seemed relatively intact immediately following cauterization but disappeared within 1 week. The regeneration of new basement membrane complexes began at 1 week with the appearance of short discontinuous segments of basement material with hemidesmosomes and similarly required approximately 6 weeks for complete restoration.

Animals↗
PubMed1998

[History of surgical instruments: 7. The first electrosurgical instruments: galvanic cauterization and electric cutting snare].

In 1854 the surgeon Albrecht Theodor Middeldorpf (1824-1868) published the first monography on the application of electrical current in surgical operations ("galvanocautery"). By galvanocautery Middeldorpf defined a procedure in which specially constructed parts of surgical instruments (usually thin platinum wires) were transformed into glowing heat by means of galvanic current from a zinc-platinum-battery. In this manner it was possible to perform dissection and destruction of tissue as well as coagulation of vessels for hemostasis. His most important electrosurgical instruments comprised an electrosurgical knife ("galvanocautery") and the electrical cutting snare ("ligatura candens") for removal of polypoid tumors. These instruments are the direct ancestors of modern electrocautery or cautery snare. The glowing platinum wire was later also applied as a light source of cystoscopes. Thus, galvanocautery enabled development of endoscopy. Modern diathermy with high-frequent alternating current was introduced in medicine by the Dermatologist Franz Nagelschmidt from Berlin.

Electrocoagulation↗
PubMed2006

Management of patients with epistaxis by general practitioners: impact of otolaryngology experience on their practice.

This study aims to assess the management of patients with epistaxis by general practitioners (GPs) and to show whether previous experience as a junior doctor in ear, nose and throat (ENT) surgery influences their practice. A questionnaire was sent together with self-addressed reply envelopes to a random sample of 1,000 GPs. Four hundred and twenty eight GPs replied (43% response rate). Ninety-eight percent GPs see less than five epistaxis per week. Eighty-six percent GPs seek a specialist opinion for approximately one in four patients seen. Fifty percent GPs would arrange investigations. There was a wide variation in these and the first aid advice given. Fifteen percent GPs had previous experience in ENT. The only significant difference in the management of epistaxis with these GPs is that they were 2x more likely to cauterize a nose with silver nitrate (P=0.002). There is no general consensus on the management of epistaxis by GPs and despite previous experiences in the specialty as a junior doctor, this fails to have a significant impact on the day to day management of epistaxis.

Anti-Infective Agents↗
PubMed2005

CCR5 chemokine receptor mediates recruitment of MHC class II-positive Langerhans cells in the mouse corneal epithelium.

PURPOSE: To characterize the chemokines and chemokine receptors that mediate the effect of proinflammatory cytokines, interleukin (IL)-1 and tumor necrosis factor (TNF)-alpha, on the recruitment of MHC class II(+) Langerhans cells (LCs) in the corneal epithelium. METHODS: A standard model for corneal LC recruitment, application of cautery to the central corneal surface was used, and the differential gene expression levels of a panel of chemokines and chemokine receptors were determined by RNase protection assay. Chemokine receptor-knockout mice were used to evaluate the recruitment of MHC class II(+) LCs to the corneal epithelium. To determine the sensitivity of selected chemokines to IL-1 and TNF-alpha stimulation, the chemokine gene expression pattern was analyzed after blockade of IL-1 and TNF receptors. RESULTS: CCR1, -2, and -5 were overexpressed in corneas after cauterization. Topical administration of soluble TNF receptor I and IL-1 receptor antagonist, which abrogated corneal LC recruitment, significantly suppressed the gene transcription levels of the ligands of CCR1 and/or -5, regulated on activation normal T-cell expressed and secreted (RANTES), macrophage inflammatory protein (MIP)-1alpha, and MIP-1beta. The recruitment of major histocompatibility complex (MHC) class II(+) LC was significantly suppressed in CCR5(-/-) mice and blockade of RANTES and MIP-1beta, but not in CCR1(-/-), CCR2(-/-)/MIP-1alpha(-/-), or MIP-1alpha(-/-) mice. The evaluation of epithelial CD11c(+) LC cells by confocal microscopy revealed coexpression for CCR5 primarily among B7(-) (CD80(-)/CD86(-)) subsets of these LCs but not among the mature B7(+) subsets of CD11c(+) LCs. CONCLUSIONS: These data suggest that CCR5 plays a critical role in mediating recruitment and mobilization of MHC class II(+) LCs into the corneal epithelium. Targeting CCR5 and its ligands may be a new strategy for modulating immunity.

Animals↗