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At least 145 records · Page 8Linked to original sources
PubMed1989

Transscleral and transconjunctival diathermy.

The authors developed a new diathermy electrode that can be used with simultaneous indirect ophthalmoscopic control. The electrode uses the same source and handle as the conventional diathermy but can be used transconjunctivally or transsclerally through full thickness sclera. Chorioretinal scars were successfully induced in 30 rabbit eyes (with or without retinal detachment). Long-term follow-up revealed normal maturation of the scars, with firm adhesion of the retina to the choroid but no gross or histopathologic evidence of permanent scleral damage.

Animals↗
PubMed1994

Drainage of subretinal fluid in retinal detachment surgery with the El-Mofty insulated diathermy electrode.

PURPOSE: A technique that uses the El-Mofty/Schepens diathermy tip (MIRA, Inc.) to effect drainage of subretinal fluid during scleral buckling surgery is described. The efficacy of this drainage technique and its complication rate in a series of consecutive patients is discussed. METHODS: The study included all of the scleral buckling procedures performed at the Retina Service for retinal detachments in which this technique was used. The El-Mofty/Schepens diathermy tip was first used to cauterize the choroid at the drainage site at low power, thus rendering it avascular, and then at higher power, to cause vaporization of the choroid, and allow spontaneous drainage of subretinal fluid. The success rate and all intraoperative and postoperative complications were recorded. RESULTS: This technique achieved successful spontaneous drainage in 53 (82.8%) of 64 consecutive cases. Complications that are occasionally associated with the drainage of subretinal fluid, including iatrogenic retinal holes, choroidal hemorrhage, and retinal incarceration in the sclerotomy site, were not seen in any of the cases. CONCLUSION: This method provides a simple and safe technique for the drainage of subretinal fluid that obviates the need to directly perforate the choroid.

Body Fluids↗
PubMed2005

An economic evaluation of laparoscopic ovarian diathermy versus gonadotrophin therapy for women with clomiphene citrate-resistant polycystic ovarian syndrome.

PURPOSE OF REVIEW: Women with polycystic ovarian syndrome are typically anovulatory and require ovulation induction. Ovarian wedge resection was the first treatment for anovulation but was eventually abandoned because of the increased risk of postsurgical adhesions and as medical ovulation induction with clomiphene and gonadotrophins was introduced. However, with the advent of laparoscopy, there has been a return to surgical approaches. The potential advantages of laparoscopic surgery include avoidance of hyperstimulation and the lowered costs make ovarian surgery an attractive alternative to gonadotrophins. RECENT FINDINGS: Clinical trials in New Zealand and the Netherlands have compared costs of laparoscopic ovarian drilling with gonadotrophins. The total cost of treatment in the Netherlands study for the ovarian drilling group was euro 4664 and for the gonadotrophins group was euro 5418. Without the cost of monitoring and the diagnostic laparoscopy then the difference was euro 2110 in favour of ovarian drilling. It was estimated that the cost per term pregnancy would be euro 14,489 for gonadotrophin and euro 11,301 for ovarian drilling (22% lower). The higher rates of multiple pregnancy in the gonadotrophin group were considered to be responsible for the increased costs. In the New Zealand trial the costs of a live birth were one-third lower in the group that underwent laparoscopic ovarian diathermy compared with those women who received gonadotrophins (NZ$19,640 and 29,836, respectively). SUMMARY: Treating women with clomiphene-resistant polycystic ovarian syndrome with laparoscopic ovarian diathermy results in reduced direct and indirect costs. The reduction in multiple pregnancies makes the alternative of surgery particularly attractive.

Cost-Benefit Analysis↗
PubMed1989

Tonsillectomy haemostasis: diathermy or ligation.

A retrospective and prospective study has been carried out to assess the morbidity associated with the techniques of diathermy and ligation in controlling tonsillectomy haemorrhage. No difference was found in the incidence of haemorrhage between the two techniques. The use of diathermy cuts the operation time by 26%, and has no increase in morbidity.

Adolescent↗
PubMed1991

Cystoscopic suction diathermy for the treatment of superficial bladder tumours.

The treatment of superficial bladder tumours (Ta, T1) is a time-consuming exercise for urological surgeons and patients. A method of treating the tumours, whether primary or recurrent, by endoscopic suction diathermy has been developed. The technique significantly reduces the amount of tumour debris within the bladder during treatment as well as the amount of diathermy employed. By removing the free tumour cells in the irrigation fluid the risk of tumour cell implantation may be kept to a minimum.

Adult↗
PubMed1986

External diathermy treatment of proliferative diabetic retinopathy with vitreous haemorrhage.

Sixty-six cases of advanced proliferative diabetic retinopathy were treated by external diathermy. The eyes had extensive fibrovascular proliferations growing into the vitreous. All had some blood, recent and old, in the vitreous. The vitreous was extremely degenerated and retracted. All the patients had inadequate diabetic control. More than half were hypertensive, with reasonable medical control, while a few had some degree of renal failure, with lower limb oedema. None of the cases were suitable for photocoagulation. Thirty-two control eyes were followed up together with the treated eyes for one to eight years. Of 53 eyes of patients with maturity onset diabetes 28 improved, 12 remained unchanged, and 13 deteriorated. Only two eyes developed neovascular glaucoma, while eight of 13 eyes of patients with juvenile diabetes improved. Of the control eyes, one regressed spontaneously, six remained unchanged, and 25 deteriorated. Of these 25 eyes eight developed traction detachment, 10 suffered relentless attacks of vitreous haemorrhage, and seven developed neovascular glaucoma. External diathermy appears to be a logical approach to cases which could not be treated by either photocoagulation or vitrectomy.

Adult↗
PubMed1999

An evaluation of radio frequency exposure from therapeutic diathermy equipment.

To assess the physiotherapist's exposure to radio frequency electromagnetic fields (RF) leaking from short wave diathermy equipment, we conducted on-site measurements of stray electric and magnetic fields (27.12 MHz) close to continuous wave (CW) short wave equipment. The results show that the operator's knees may have the highest exposure level for both electric field (E-field) and magnetic field (H-field) in the normal operating position, i.e., behind the device console. The whole-body E-field exposure normally does not exceed the 1992 IEEE recommended limit during a normal treatment session. On the other hand, the operator's whole-body exposure to H-field was barely below the recommended limit. Our data suggest little chance of immediate harmful effects of RF leakage from the diathermy. Nonetheless, physiotherapists should still be advised to remain at a distance of at least 20 cm from the electrodes and cables to avoid possible overexposure.

Allied Health Personnel↗
PubMedDate not supplied

Radiofrequency bipolar submucosal diathermy of the inferior turbinates.

Fifty nonatopic patients with chronic hypertrophic rhinitis and suffering from chronic nasal obstruction due to hypertrophied inferior turbinates were subjected to bipolar submucosal diathermy using a radio frequency unit and a bipolar turbinate probe. One year postoperatively, 76% of patients showed significant improvement of their nasal breathing and another 16% reported partial improvement. The minimal cross sectional has also significantly increased from 0.58 +/- 0.05 cm2 to 0.72 +/- 0.04 cm2 and the decongestive effect was statistically significant. Electron microscopic examination of the nasal mucosa at the end of the follow up period revealed intact healthy epithelium as well as intense fibrosis of the underlying stroma. The results of the work showed that bipolar submucosal diathermy is a safe, effective outpatient procedure that does not require nasal packing or expensive instrumentation. The procedure can be repeated, if necessary, according to the patient's needs.

Biopsy↗
PubMedDate not supplied

A diathermy suppression filter for external pacemakers.

Some patients undergoing cardiothoracic surgery require cardiac pacing. Surgical diathermy interferes with the operation of external pacemakers, and can cause a loss of cardiac output. The addition of a simple two-stage LC filter to the front end of the pacemaker enables cardiac output to be maintained during the use of surgical diathermy. (Although this article refers specifically to the Devices E4160 series pacemakers, the filter can, in principle, be used with any external pacemaker.

Diathermy↗
PubMed1999

Allergic contact dermatitis to acrylates in disposable blue diathermy pads.

We report 2 cases of elicitation of allergic contact dermatitis to acrylates from disposable blue diathermy pads used on patients who underwent routine surgery. Their reactions were severe, and took approximately 5 weeks to resolve. Both patients gave a prior history of finger tip dermatitis following the use of artificial sculptured acrylic nails, which is a common, but poorly reported, cause of acrylate allergy. Patch testing subsequently confirmed allergies to multiple acrylates present in both the conducting gel of disposable blue diathermy pads, and artificial sculptured acrylic nails. We advocate careful history taking prior to surgery to avoid unnecessary exposure to acrylates in patients already sensitized.

Acrylates↗
PubMed1992

Outpatient loop diathermy conization as an alternative to inpatient knife conization of the cervix.

A knife cone biopsy of the cervix is usually performed as an inpatient procedure under general anesthesia and is associated with significant morbidity. Loop diathermy conization was performed under local anesthesia on colposcopy outpatients as an alternative to knife conization. In 33 consecutive patients studied the procedure was well tolerated, there were no operative complications, and a satisfactory specimen for histologic examination was obtained in every case. One case of unsuspected invasive cancer and two of suspected microinvasive cancer were diagnosed. The diagnosis of cervical precancer was made in 24 (73%) of the cases. The introduction of outpatient loop diathermy conization of the cervix instead of knife conization would decrease hospitalization costs, avoid the need for general anesthesia and potentially reduce short-term patient morbidity.

Adult↗
PubMed1986

A low voltage diathermy loop for taking cervical biopsies: a qualitative comparison with punch biopsy forceps.

Twenty patients attending a colposcopy clinic because of a cytological suspicion of dyskaryosis were entered into a 'paired' biopsy study. A low voltage diathermy loop biopsy and a punch biopsy were taken from the cervix of each patient. In a second 'unpaired' study loop biopsies taken from 20 patients were compared with punch biopsies taken from 20 different patients. The length and depth of the loop biopsies were greater than those of the punch biopsies. There was no difference in the amount of artefactual damage. These findings held for both the paired and the unpaired studies. We conclude that biopsies taken with the low voltage diathermy loop are more likely to reveal microinvasive disease.

Biopsy↗
PubMed1979

[Harmful interference between preoperative prophylactic cardiac pacemaker and cutting diathermy. Case report].

The authors report the case of a patient suffering the consequences of harmful preoperative between a prophylactic cardiac pacemaker system and cutting diathermy, resulting in irreversible ventricular fibrillation. After reviewing the different mechanisms responsible for this accident, they attribute the blame to a phenomenon of capture of electromagnetic currents with the pacemaker catheter playing the role of an aerial. They reconsider the indications for the use of prophylactic pacing and recall the safety precautions which must be respected at the time of simultaneous use of an external pacemaker and cutting diathermy.

Diathermy↗
PubMed1983

Heating patterns produced by shortwave diathermy applicators in tissue substitute models.

To be a deep-heating modality, shortwave diathermy applicators have to heat the musculature more than the subcutaneous fat. In this study, commercially available and prototype shortwave diathermy applicators were tested using tissue substitute models which allow rapid thermographic scanning of the initial linear transient temperature rise in the subcutaneous fat and muscle. The specific absorption rates (SAR) of the electromagnetic radiation were calculated throughout the tissues. Great differences were found in the deep-heating capability of these applicators. Some of the applicators heated the subcutaneous fat more than the muscle, while others were more efficient in heating the musculature.

Adipose Tissue↗
PubMed1983

Microwave diathermy: effects on experimental muscle hematoma resolution.

The resolution of a muscular hematoma is an important step in the recovery from a muscle injury. Because heat application has been advocated to accelerate this resolution, the effectiveness of microwave diathermy as a means of selectively heating the musculature was studied. For this purpose muscular hematomas were formed in 6 pigs by bilateral injections of blood labeled with the radioisotope chromium-51 (Cr51) into the biceps femoris muscle. One hematoma site was heated with microwave diathermy and the opposite side served as a control. The tissue temperature at the hematoma site was shown to be in the therapeutic range of 42 to 45C, which would cause a maximal local blood flow response. A decay curve was formed by counting the radioactivity of the hematoma site with a scintillation counter. Best fit lines fitted to the decay curves to determine effective half-life values showed that the treated side had a significantly shorter washout time than the control side. This result supports the use of heat as an adjunct to other therapy aimed at resolution of muscular hematomas.

Animals↗
PubMed1982

Effect of short-wave diathermy on mobility and radiological stage of the knee in the development of experimental osteoarthritis.

The objective of the study was to determine the effect of short-wave diathermy on joint mobility and radiographic changes during the development of osteoarthritis. An experimental model for osteoarthritis was developed by periodic immobilization of rabbit knees. Nine rabbits was given short wave diathermy in the same knee 55 times for 5 minutes with a power of 50 W for 11 weeks. An identically immobilized group of 17 rabbits was used as control. The most significant effect on the mobility of the treated knee was the development of extension deficiency. This limitation developed within a week and was permanent. A smaller effect was found on flexion mobility. Flexion deficiency decreased at the end of the immobilization period and increased during remobilization, though at the end of the experiment there were no differences compared with the control. Radiographic changes were similar during the development of osteoarthritis in treated and non-treated groups.

Animals↗
PubMed1995

Clinical and pathological evaluation of large loop diathermy excision of the transformation zone.

In order to make accurate diagnosis and to carry out treatment of cervical preneoplastic disease, large loop diathermy excision of the transformation zone was performed in 98 patients. The colposcopic assessment was indicated by abnormal smear or history of treatment for preneoplastic changes. The entire transformation zone could be excised in one piece in 90% of cases. Histological examination of the specimens confirmed dysplasia in 89% of patients and in 4 cases invasive cervical disease was revealed. The ectocervical and endocervical excision margins were free of dysplastic epithelium in 68% of cases. Compared to traditional cone biopsy, the new method is cheaper and more simple. Loop diathermy excision of the transformation zone can be performed in local anaesthesia as an out-patient procedure and there is no need for postoperative hospitalization. By reducing the number of general anesthesia, the workload in gynaecological theatres and by eliminating the need for postoperative hospital stay the method substantially contributes to the improvement of the hospital budget.

Colposcopy↗