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At least 235 records · Page 13Linked to original sources
PubMed2002

Laparoscopic ovarian diathermy in women with polycystic ovarian syndrome: a retrospective study on the influence of the amount of energy used on the outcome.

BACKGROUND: Currently, there is an uncertainty about the optimum number of punctures to be applied at laparoscopic ovarian diathermy (LOD). This retrospective study was undertaken to investigate the dose-response relationship of LOD. METHODS: The hospital records of 161 women with polycystic ovarian syndrome who underwent LOD were reviewed and the clinical data before and after LOD were documented. Subjects were divided into six groups according to the number of punctures made in their ovaries as follows: group 1, two punctures per ovary; group 2, three punctures; group 3, four punctures; group 4, five punctures; group 5, six punctures and group 6, seven to 10 punctures. Contingency table analysis and analysis of variance were used to compare the outcomes of the different groups. RESULTS: The rates of ovulation, conception and restoration of menstrual regularity after LOD were significantly lower in group 1 compared with other groups. There were no significant differences in the success rates between the other groups. CONCLUSION: Two punctures per ovary are associated with poor results. Three punctures per ovary seem to represent the plateau dose. The application of seven or more punctures per ovary may result in excessive destruction to the ovary without any improvement of the results and should therefore be discouraged.

Adult↗
PubMed2006

Effect of laparoscopic ovarian diathermy on circulating inhibin B in women with anovulatory polycystic ovary syndrome.

BACKGROUND: Laparoscopic ovarian diathermy (LOD) frequently induces ovulation in patients with polycystic ovary syndrome (PCOS). The mechanism by which this effect occurs remains largely unexplained. The aim of this study was to measure changes in inhibin B production in response to LOD to see whether this could explain the mechanism of action of LOD. METHODS: This prospective study included 50 anovulatory women with PCOS. All women underwent LOD. Blood samples were collected before and after LOD to measure plasma concentrations of inhibin B, gonadotrophins and androgens. RESULTS: The pre-operative median plasma concentration of inhibin B was 110.0 pg/ml (range 19.0-567.0 pg/ml). There was a statistically significant inverse correlation (r= -0.286; P < 0.05) between body mass index (BMI) and inhibin B. Non-obese women with PCOS (BMI 30 kg/m2; n=13). Following LOD, 39 women ovulated. No statistically significant change of inhibin B after LOD was observed in the overall group of women with PCOS or in the subgroup of non-obese PCOS women with higher pre-operative inhibin B. CONCLUSIONS: The lack of any change of inhibin B after LOD makes it unlikely that this hormone has any role to play in the mechanism of action of LOD.

Adult↗
PubMed1987

Effect of pulsed short wave diathermy on skeletal muscle injury in rabbits.

The purpose of this study was to determine whether short wave diathermy (SWD) would enhance healing of a skeletal muscle injury. Thirty-two rabbits were divided into the following four groups: Experimental Group 1 (n = 8), which was given SWD twice daily for 8 consecutive days; Control Group 1 (n = 8), which was followed for 8 days but not given treatment; Experimental Group 2 (n = 8), which was given SWD twice daily for 16 consecutive days; and Control Group 2 (n = 8), which was followed for 16 days but not given treatment. The muscle injury was induced by giving all 32 rabbits three local injections of a myotoxic drug into the right gastrocnemius muscle. After the 8 or 16 days, all muscles were removed, then embedded in paraffin or frozen, sectioned, stained with adenosine triphosphatase or hematoxylin and eosin and examined with a light microscope. No statistically significant differences in the degree of muscle healing were found between the animals in Experimental Group 1 and Control Group 1 and those in Experimental Group 2 and Control Group 2. A trend toward faster resolution of the muscle injury was observed among those rabbits in Experimental Group 2 as compared with those rabbits in Control Group 2. Further study is required to determine whether SWD can be more effective for enhancing recovery from skeletal muscle injury.

Animals↗
PubMed1984

The assessment of unwanted radiation around diathermy RF capacitive applicators.

The electromagnetic field intensities in the vicinity of apparatus which generate RF fields are influenced by a multiplicity of variables which are tied to the conditions of their use. The setting up of proper ambient surveillance requires the predisposition of operational protocols which take variable factors into account, permitting the individualization of major risk situations, and assuring the repeatability and comparability of the results. To that end, in relation to a diathermy apparatus operating at 27.12 MHz (a source of excess radiation in confined environments), the variation of the levels of E-field intensities as a function of the configuration of phantom-electrodes are determined experimentally. Finally a theoretical relation is determined, which, in accord with the experimental data, permits the generalization of the results obtained for a multiplicity of real situations.

Diathermy↗
PubMed1989

Evaluation of reproductive function of female rats exposed to radiofrequency fields (27.12 MHz) near a shortwave diathermy device.

In recent years, there has been increased concern regarding effects of operator exposure to the electromagnetic (EM) field associated with shortwave diathermy devices. The present study was designed to investigate the effects, on rats, of repeated exposure to such an EM field. Following repeated exposure for 5 wk, a reduction in fertility occurred as indicated by a reduced number of matings in exposed rats compared to sham-irradiated rats and a reduction in the number of rats that conceived after mating. The data suggest that female operators could experience reduced fertility, if they remained close to the console for prolonged periods. This has particular significant for the physiotherapy profession.

Animals↗
PubMed2004

A prospective single-blind randomized-controlled trial comparing two surgical techniques for the treatment of snoring: laser palatoplasty versus uvulectomy with punctate palatal diathermy.

The aim of this study was to compare laser palatoplasty with uvulectomy with punctate palatal diathermy as treatment modalities for snoring. The study design was a prospective, single-blind, randomized-controlled trial. Eighty-three patients entered the trial. After a mean follow-up period of more than 18 months there was no statistically significant difference between the two groups regarding the patient perception of benefit from surgery or the subjective improvement in snoring. However, there was a statistically significant difference in the degree of pain in the immediate postoperative period (mean difference = 22.14, 95% CI = 7.98-36.31, P = 0.003), with the pain being worse in the laser palatoplasty group. Relative risk of complications for laser palatoplasty was 1.42 (95% CI = 0.93-2.17). The snoring scores and Glasgow Benefit Inventory scores decreased with time in both the groups but there was no statistically significant difference between the two groups.

Adult↗
PubMed1993

Endoscopic transurostomy diathermy anastomotomy. A combined approach to uretero-ileal stenoses.

Uretero-ileal stenosis is a recognised complication of ileal conduit urinary diversion. Two patients are described in whom a combination of fibreoptic conduitoscopy with standard endoscopic "biliary" sphincterotomy was used to treat anastomotic strictures. The technique of endoscopic transurostomy diathermy anastomotomy allowed the salvage of 3 renal units without the need for laparotomy or long-term indwelling ureteric stents.

Anastomosis, Surgical↗
PubMed1979

The effect of laparoscopic sterilisation by diathermy or silastic bands on post-operative pain, menstrual symptoms and sexuality.

A total of 530 patients was reviewed six months after laparoscopic sterilisation by diathermy (235 patients) or silastic bands (295 patients). In the immediate postoperative period severe lower abdominal pain was more common in the patients who had silastic bands. There was no differences in the nature or incidence of menstrual problems when the two methods were compared. In all, 40 per cent of patients reported an increase in menstrual blood loss ad 26 per cent of patients an increase in menstrual pain, and this could not be attributed entirely to stopping oral contraception; 42 per cent of patients reported improvement in their sex lives after sterilisation, while 6.6 per cent reported deterioration mainly due to lack of libido. There was some regret about the operation in 5.1 per cent of patients.

Diathermy↗
PubMed1989

Diathermy resection and radioactive gold grains for palliation of obstruction due to recurrence of bronchial carcinoma after external irradiation.

During 1985-7 15 patients previously treated by external radiotherapy for inoperable carcinoma of the lower trachea and major bronchi underwent endobronchial insertion of radioactive gold grains as a palliative procedure for relief of symptoms. Four patients had undergone three or more endobronchial laser treatments before being referred. Under general anaesthesia diathermy was used to resect obstructing tumour before the insertion of the gold grains into the tumour and the compressed endobronchial wall. Four patients died within one month. The remaining 11 patients were symptomatically and objectively improved when assessed at one month. Both collapsed lungs and three out of six collapsed lobes had re-expanded. Fourteen of the 15 patients died within 13 months (median survival 2.5 months); one patient with recurrent symptoms after 10 months underwent a further implantation and is alive after two years.

Adenocarcinoma↗
PubMed1998

Mid-follicular phase pulses of inhibin B are absent in polycystic ovarian syndrome and are initiated by successful laparoscopic ovarian diathermy: a possible mechanism regulating emergence of the dominant follicle.

The hypothalamic pulse generator of GnRH is recognized to be central to ovulatory function as evidenced by the anovulation of women with hypogonadotrophic hypogonadism due to Kallmann's syndrome or severe anorexia nervosa. LH is released from the anterior pituitary in pulses, the frequency of which is closely entrained with those of GnRH. In contrast, secretion of FSH is influenced by a number of regulatory molecules, including GnRH, estradiol, inhibin, and activin. The close temporal relationship between changes in levels of inhibin B and FSH in the mid-follicular phase suggests that the release of inhibin B by the preovulatory follicle critically regulates pituitary FSH secretion. Polycystic ovarian syndrome (PCOS) is one of the most common endocrine disorders affecting ovulation, and abnormal ovarian morphology as detected by ultrasonography remains the most sensitive diagnostic marker for this disorder. The etiology of PCOS is unclear, but its effective treatment by both anti-estrogens and by exogenous FSH suggests that a primary disorder of FSH regulation may be central. To investigate the possible role of inhibin B in the pathology of PCOS, serum inhibin B levels were measured in 10 women with PCOS on cycle day 5 of a spontaneous or progestrogen-provoked bleed and compared with levels on cycle day 5 of 10 women with regular ovulatory cycles. The mean serum inhibin B levels in the PCOS patients were significantly higher at 248 (+/- 43.4) pg/mL compared with normal controls, 126 (+/- 18.6) pg/mL (P < 0.01). Ten women with clomiphene resistant PCOS and 5 normal controls consented to undergo serial blood sampling on cycle day 5. Time Series Analysis using a Fourier Transformation to analyze the power spectrum of the data revealed that in normal women there is a distinct periodicity in inhibin B levels with a clear peak detectable every 60-70 min (P < 0.05), whereas in women with ovulatory dysfunction due to PCOS, no such pattern of regular pulsatility was seen. Four women with PCOS whose anovulation was successfully treated with laparoscopic ovarian diathermy (LOD) underwent repeat venous sampling following LOD. Their serum inhibin B levels fell to the upper limit of the normal range (160 +/- 38.5) pg/mL, and pulsatility was initiated. It is possible that inhibin B pulses are being generated directly by the ovary in response to pulses of GnRH in the peripheral circulation, or indirectly in response to FSH pulses arising in the pituitary. The function of inhibin B pulses in the mid-follicular phase of the normal cycle remains to be elucidated, but the absence of the normal pulsatile pattern in women with PCOS, in conjunction with high basal levels of inhibin B arising from the multiple small follicles characteristic of the PCOS ovary, appears to reinforce the development of a large cohort of small, developmentally arrested, and ultimately atretic follicles in these patients. Initiation of normal inhibin B pulsatility by LOD in patients with polycystic ovaries appears to correlate with the post-operative onset of ovular cycles.

Diathermy↗
PubMed2001

DBS and diathermy interaction induces severe CNS damage.

Pulse-modulated radiofrequency diathermy treatment to the maxilla produced permanent diencephalic and brainstem lesions and a vegetative state in a patient with PD with implanted subthalamic electrodes for deep brain stimulation.

Aged↗
PubMed1985

Bipolar diathermy forceps with automatic irrigation. Technical note.

A method for providing a saline drip during bipolar diathermy is described. Stainless steel tubing is incorporated in both blades of standard bipolar forceps and connected to the irrigating line. Irrigation is started when the forceps are closed and is stopped when they are open.

Diathermy↗
PubMed1979

Microwave diathermy: the invisible healer.

The medical use of heat produced by microwave radiation is called microwave diathermy, which has been the subject of considerable study by FDA over the last few years. The lack of reliable safety controls on many of these machines to prevent possible overexposure of harmful radiation to patients is one of several reasons why the Agency will soon propose a performance standard that will assure the safety and effectiveness of these medical services.

Diathermy↗
PubMed2000

Fine needle diathermy occlusion of corneal vessels.

PURPOSE: To develop a novel technique, fine needle diathermy (FND), for the occlusion of corneal vessels and to evaluate its safety and efficacy in a series of patients. METHODS: Fourteen patients were treated with FND to occlude corneal vessels. Patients were categorized into four groups: group 1 (n = 4), high risk patients with stromal vascularization before keratoplasty; group 2 (n = 2), patients with progressive lipid keratopathy; group 3 (n = 4), post keratoplasty patients with active rejection episodes associated with vessels; and group 4 (n = 4), patients with disciform vascularized scars with recurrent inflammation. The success of the treatment in terms of vessel occlusion and the clinical outcome were monitored. RESULTS: All patients in group 1 had successful corneal transplantation, and the grafts remained clear without graft rejection. Patients in group 2 with lipid keratopathy had 100% obliteration of vessels with stabilization of corneal scar. All four patients in group 3 had complete regression of vessels with reversal of graft rejection. Patients with vascularized disciform scar had resolution of the inflammation without recurrence. Average follow-up was 10.3 months (minimum, 6 months; maximum, 24 months). No serious complications were observed with FND. CONCLUSIONS: FND is a useful and inexpensive technique that can serve as an adjunct or alternative to laser occlusion for the treatment of established corneal vessels. It is fairly safe and effective, although complications such as intrastromal bleeding and crystalline deposits can occur and at times it may have to be repeated once or twice to achieve the desired result.

Adult↗
PubMed2002

Advances in polycystic ovary syndrome treatment: metformin and ovarian diathermy.

Polycystic ovary syndrome (PCOS) affects approximately 6% of women in their reproductive years. The symptoms of the syndrome are chronic anovulation and androgen excess. Infertility due to ovulatory dysfunction is a common problem for women with PCOS. Metformin, an antihyperglycemic agent, can correct the metabolic dysfunction that occurs with PCOS, and also stimulate folliculogenesis. The drug is effective alone and in combination with clomiphene citrate. An alternative option, ovarian diathermy, also promotes ovulation through changes in the intraovarian hormonal environment. Both techniques provide promising and effective alternatives for women with PCOS who do not respond to traditional oral ovulation induction agents.

Algorithms↗
PubMed1991

Investigations on diathermy for anterior capsulotomy.

Diathermy is an approved instrument for intraocular surgery. The authors studied the effects and possible side effects of the first clinical application of a straight bipolar high-frequency probe used to cut the anterior capsule in extracapsular cataract exfraction (ECCE) with a continuous movement. In 25 patients with intumescent or mature cataractous lenses, on which capsulorhexis is difficult to perform, the anterior capsule was cut and a round capsulotomy of the desired diameter obtained. Simultaneously, intraocular temperature was measured for the first time in vivo inside the anterior chamber with a microtemperature probe during the operation. With the technique described, it reached a maximum of 33.4 degrees C (the maximum ranged from 32.8 degrees C-33.4 degrees C). There was no abnormal loss of corneal endothelial cells in the 12-month postoperative follow-up. In addition, electrolysis could not be verified experimentally.

Aged↗