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At least 559 records · Page 31Linked to original sources

PubMed1990

Modifications in operating-table design for urologic microsurgery.

Microsurgery, especially on an outpatient basis, is a growing part of urologic practice. A commercial table that matches the exacting requirements of urologic microsurgeons does not exist. We have developed a simple and inexpensive design that can be fabricated easily by a hospital workshop. Notable features include removable arm rests, table indentations, and an x-ray carriage assembly. The table is easy to maintain, transport, and store. Comfort and easy access to the operative field improve the surgeon's performance and ultimately translate into better operative results.

Humans↗

PubMed1990

[Microsurgery, laser-assisted cranial nerve anastomosis. An experimental study].

Recently the milliwatt-CO2-laser has been introduced into the armentarium of experimental microsurgery for performing coaptation in peripheral nerves using the thermal effect of laser energy in order to achieve an atraumatic and reliable tissue bond. Experimental studies have shown that laser-assisted nerve coaptation are equal if not superior to conventional techniques in the reduced incidence of neuroma formation as well as the regenerative capacity. In this experimental study we have investigated if the CO2-laser working in the milliwatt range can be successfully applied for performing anastomosis of cranial nerves. The right oculomotor nerve in cats was microsurgically explored along the lateral temporal fossa from its exit at the brain stem to its entrance into the rudimentary cavernous sinus. Following division of the nerve with microscissors the nerve ends were loosely approximated. Thereafter welding of the cut nerves was performed with the CO2-laser (Cooper Laser Sonics, Model 860) using a power of 80-90 milliwatts, a spot-size of 150 microns and single bursts of laser energy. Complete welding of the cut nerve ends took about one to two minutes after which the surgical wound was closed. All experimental animals were observed for a period of 12 weeks after which they were sacrificed and the welded oculomotor nerve was removed for histological examination. Functional recovery of the III. nerve during the observation period was demonstrated by examination of the resting diameter of the pupil as well as by its reaction to direct stimulation with light. Morphological regeneration of the operated nerves could be demonstrated by histological studies.(ABSTRACT TRUNCATED AT 250 WORDS)

Anastomosis, Surgical↗

PubMed1990

[Laser microsurgery in glaucoma].

Based on ten years work, the authors summarize their experience with the use of different types of lasers and laser methods in the treatment of glaucomas. They draw attention to the limits of effectiveness of laser microsurgery, to different modifications of hitherto used methods and their combinations. The authors try to define the position of lasers in the therapy of glaucomas.

Glaucoma↗

PubMed1987

[Results of microsurgery in ear malformations].

Small middle ear malformations consist of bony bridges compromising the vibration possibilities of the ossicular chain. In 17 out of 21 cases the air bone gap could be closed by microsurgery. The results in surgery of extended ear malformations with microtia, atresia of the outer ear and a malformated middle ear were not as good. In cases with aerated middle ear space the air bone gap could be reduced to 20 dB in 32 out of 45 cases (71%). When there was no air in the middle ear fenestration of the horizontal semicircular canal was performed. An improvement of hearing could be measured in 3 out of 10 cases. In 3 cases labyrinthine structures were not identified. Stenoses of the entrance of the outer ear canal and granulation in the outer ear canal could be safely prevented by using the skin-to-bone suturing technique after Zühlke and split thickness skin graft with fibrin glue in the outer ear canal.

Adolescent↗

PubMedDate not supplied

Fibrin sealant in experimental tubal microsurgery.

This study compares the results of microsurgical tubal anastomosis performed using a fibrin sealant, 9-0 monofilament polyglycolic acid (PGA) suture, or fibrin sealant in combination with 9-0 PGA suture. Sixty rabbits were divided into three groups of 20 rabbits each. The pregnancy rate of the rabbits was 95%, 95%, and 85%, respectively; without any intervention, the fertility rate was 95% in 20 nonexperimental rabbits (control group). We conclude that fibrin adhesive employed for reanastomosing of the fallopian tube in rabbits, compared with synthetic microsutures, results in identical pregnancy rate and identical conditions of passage through the tubes. Fibrin sealant is absorbed more rapidly than absorbable microsutures, results in fewer adhesions, and shorter operating time. Thus, fibrin adhesive possibly provides an alternative to the traditional employment of sutures in gynecological microsurgery.

Animals↗

PubMed1989

[Osteosynthesis procedures in microsurgery].

In microsurgery the indications and techniques of osteosynthesis are often different from normal orthopaedic surgery. Simple methods which do not require much time or metal and which guarantee sufficient stability and minimal soft-tissue trauma are preferable. The external fixator has a good indication in the tibia and the plate osteosynthesis in the upper extremity and in the femur. Kirschner wires are useful in peripheral osteosyntheses.

Arm↗

PubMed1989

[Microsurgery in gynecology. 8 years' clinical activity].

A series of 110 patients given surgical treatment for "mechanical infertility of varying origin in 1980-88 is examined". The classification system proposed for the microsurgical procedures available is based both on personal experience and on the classification of the causes of mechanical infertility in women according to aetiopathogenesis. Clinical results are judged in terms of pregnancies achieved and suggest that while adhesiotomy, salpyngostomy, t-t tubal anastomosis and cornual reimplantation are all useful, fimbrioplasty is less likely to give good results, particularly in the long term. Finally the links between gynaecological microsurgery and F.I.V.E.T. and G.I.F.T. are analysed.

Female↗

PubMed1989

[Conservative solution of tubal pregnancy by microsurgery].

Possibilities of conservative microsurgical solution of ectopic tubal pregnancy are reported on. The authors present their cases of which a term pregnancy is first reported in the Hungarian literature. The attention is drawn to the expectable complications, the indications and technical realisation of the microsurgical technique are discussed. The importance of conservative microsurgery of tubal pregnancy is emphasized.

Female↗

PubMed1989

[Laser microsurgery after ineffective anti-glaucoma surgery].

Authors suggest possibilities to use the laser microsurgery for improvement of the intraocular pressure in the eyes previously operated by means of different antiglaucomatic operations. Argon and YAG lasers were used for indicated microsurgical operations affecting the anterior chamber angle or the iris when the previous operation was not followed by adequate decrease of the intraocular pressure.

Aged↗

PubMed1989

[Permanent manual magnets in microsurgery of the eye].

Intraocular magnetic foreign bodies represent still an important problem. Giant electromagnets make possible to extract the foreign magnetic bodies in nearly all cases. The hand-manipulated electromagnets are advantageous for their easier use. The miniature permanent magnets equipped with shaped extensions are constructed for purposes of the ocular microsurgery. Authors have designed, in cooperation with the domestic technical institutes and manufactures, the original type of the permanent magnet equipped with needed extensions and experimentally verified its usage during microsurgical extractions of the magnetic intraocular bodies.

Eye Foreign Bodies↗

PubMed1978

[Reconstructive microsurgery in traumatic amputations of wrist and fingers (authors transl)].

A specialised department for vascular microsurgery was established in the Research Institute for Clinical and Experimental Surgery in 1973. 58 replantations of fingers in 42 patients were made. Total percentage of healing was 52 (30 fingers). Doppler's flowmetry is very useful for the control of microanastomoses of the arteries in fingers. Reconstruction of vessels in fingers was made with an operative microscope (magnification 16--24 times), special microtechnique and 10/0 sutures. Successful replantation is possible even 10--12 hours after severance, it the finger is kept in hypothermia at + 4 degrees C. Rapid admission of the patients to the hospital, i.e. improved information and emergency transport may shorten ischaemic time. The first stage of replantation is the marking of arteries and veins in the finger and in the stump. It is essential to suture not less than 2--3 veins for one artery and nerve. Thorough rehabilitation is of utmost importance to get the best functional results.

Amputation, Traumatic↗

PubMedDate not supplied

Distal tubal occlusion: microsurgery versus in vitro fertilization--a review.

The success of in vitro fertilization (IVF) has established it as a viable alternative in the treatment of infertility associated with distal tubal occlusion (DTO). In an attempt to adequately counsel patients with DTO as to whether their primary treatment should be microsurgery or IVF, the authors have performed a comprehensive world-wide literature review. Based on what has been published to date, it would appear that patients with mild to moderate tubal disease should be offered salpingoneostomy as their first treatment modality. For patients with severe disease accompanied by extensive pelvic adhesions, salpingoneostomy should be discouraged.

Fallopian Tube Diseases↗

PubMed1989

A training system for first and solo assistants in microsurgery.

1. A system to train nurses to be first and solo assistants of microsurgery has been practiced in our hospital for the past 13 years. 2. Under our unique weekly rotation system, nurses are educated to be all-around nurses. Microsurgical assistance is only one of approximately eight sections of the rotation. 3. Under this system, nurses can become extremely efficient solo assistants after 3 years.

Cataract Extraction↗

PubMed1985

[Reconstructive microsurgery of the vas deferens. Experimental study of suture materials].

Microsurgery is the procedure of choice for vasectomy reversal. The aim of this study was two compare two different suture materials for vasovasectomy - a nonresorbable material (nylon 10/0 with a BV 6 needle), which is widely used, and a resorbable material (polyglycolic acid, also with a BV 6 needle), which has not yet been evaluated for this use. 28 Sprague-Dawley rats were operated on under microscope. Two groups were then compared, group A with nylon (n = 14) and group B with polyglycolic acid (n = 14). In each group, 8 animals had a vas deferens section and 6 had a previous vasectomy by ligature. Ten days postoperatively, the patency rate of the anastomosis was evaluated by the presence of sperm on both sides of the suture line. The contractility was assessed by mechanical stimulation. The existence of a sperm granuloma was considered as indicative of a non functional anastomosis. Three days later a fertility test was performed, lasting three months, and the number of litters was checked. The rats were sacrificed after three months, and each vas deferens was examined histologically or by electron microscope. The macroscopic results were: 57% patent anastomoses in group A and 77% in group B. 16% patent anastomoses after ligature in group A (n = 6) and 75% in group B (n = 6). The pregnancy rate was 54% in group A and 77% in group B. After previous ligation, the corresponding figures were 20% and 83% respectively.(ABSTRACT TRUNCATED AT 250 WORDS)

Animals↗

PubMed1978

Closed intraocular microsurgery in ocular trauma.

A series of 53 eyes that had suffered severe trauma was treated by closed intraocular microsurgery with vitreous cutters. The cases were divided into three categories: (a) anterior segment reconstruction for traumatic cataracts and post-traumatic pupillary membranes, (b) vitreous haemorrhage with and without retinal detachment, and (c) traumatically dislocated lenses.

Anterior Chamber↗

PubMed1985

[Endotracheal tube for laryngeal CO2 laser microsurgery. 208 cases].

To suppress the risk inherent in laryngeal microsurgery performed with a CO2 laser beam, the authors suggest to use a reinforced silicone endotracheal tube, the cuff of which is protected by a silicone plus aluminium powder shield. The resistance of silicone to fire is augmented during laser shots by a nitrogen flow on the upper side of the shield at the rates of 2 l/min in patients breathing air and 30 l/min in patients give oxygen.

Adolescent↗

PubMed1988

[Experimental studies of vascular replacement in microsurgery].

There is a need for vessel substitute material in microsurgery. Currently autologous pieces of vessel are used. An experimental study in the rat model was undertaken to test the practicability of two different PTFE-prostheses (Goretex) of 1 and 2 mm in diameter and of different lengths. Results show an excellent patency rate of short grafts in high-flow vascular system. In contrast microvascular prostheses used in a low-flow vascular system were patent only for a short time.

Animals↗

PubMed1988

[Education and training in microsurgery without experiments on live animals].

A theoretical concept of a training programme for microsurgery is presented. This programme--as an alternative to the presently existing types of microsurgical education using the living laboratory animal--pursues the training of microsurgical skills exclusively on non-living objects. This paper describes the training laboratory as well as four training procedures, each using separate objects with an increasing degree of difficulty and educational benefit: surgical glove; silastic tube; sciatic nerve of a chicken; perfused coronary arteries of a pig's heart. Completion of this programme conveyed to the trainee the same basic abilities as training on a living laboratory animal.

Animal Testing Alternatives↗