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Biomedical subjects

B M O'Brien

Publications and source records attributed to B M O'Brien.

At least 199 records · Page 11Linked to original sources
PubMed1977

Microsurgery.

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Adolescent↗
PubMed1977

A long-term review of digital replantation.

An analysis of the first 130 cases of digital revascularization and replantation performed at St Vincent's Hospital, Melbourne, during the period 1970-1977, confirms the long-term functional value of these procedures provided that strict indications for replantation are adhered to. Patient satisfaction has been almost universal, and objective testing shows that the most satisfying aspect of the procedure is the quality of sensory return. Flexor tendon function and the range of joint movement, however, are universally poor, and all patients complain of sensitivity to cold. The thumb has been by far the most satisfactory digit to replant, and avulsion injuries gave the poorest results, from the point of view of both survival and long-term function.

Adolescent↗
PubMed1977

Evaluation of digital replantation--a review of 100 cases.

One hundred digital replantations and revascularizations of digits performed during a five year period were analyzed. Seventy replantations (70 per cent) survived and 62 were available for long term functional follow-up. Provided strict indications are observed, replantation is a most worthwhile procedure.

Adolescent↗
PubMed1976

Lymphaticovenous anastomosis by microvascular technique.

After developing some basic techniques of lymphaticovenous anastomoses in 60 dogs, a further study of these anastomoses in the greyhound was performed with a patency rate of 74 per cent a 1 week and 66 per cent between 6 and 12 weeks. Points of technique and causes of failure are discussed. The use of this method in the treatment of early secondary lymphoedema is mentioned.

Animals↗
PubMed1976

Replantation and reconstructive microvascular surgery. Part I.

Although the operating microscope was introduced more than 50 years ago, its use was at first confined to otolaryngology and, later, to ophthalmology. More recently its use in the development of microvascular techniques has led to spectacular advances in the field of replantation and reconstructive surgery. The organization of microsurgical research at St Vincent's Hospital, Melbourne, is briefly described and clinical experience at this hospital over the past 10 years is reviewed. This includes 86 cases of digital replantation, with survival rates of 58% for complete and 82% for incomplete amputation, and 14 cases of major replantation (amputations proximal to the metacarpophalangeal joints) with a survival rate of 71%. In the second part of the lecture the use of microsurgery for composite tissue transfer and one-stage toe-to-hand transfer is discussed and experimental and clinical experience in microlymphatic surgery described.

Adolescent↗
PubMed1975

An experimental evaluation of microvenous grafts.

Vein grafts into I mm vessels were performed with a high success rate, using autografts in rabbits. Failure in most instances was thought to be due to technical errors at operation. The length of the grafts did not alter the patency rate.

Animals↗
PubMed1975

An experimental study of microvascular technique, patency rates and related factors.

Microvascular repairs of 50 rabbits' femoral arteries averaging 0.9 mm in diameter gave an immediate patency rate of 100 per cent and a follow-up patency rate of 98 per cent after 3-41 days. The patency rate of 50 veins averaging 1.1 mm in diameter was 98 per cent immediately after surgery and 80 per cent after 3-41 days. No anticoagulants or antispasmodics were used. An additional 25 vein repairs with sufficient additional sutures to ensure more accurate apposition of the vein edges resulted in 100 per cent immediate patency and 92 per cent patency when examined during the 2nd week, the period which reveals the truest patency rate. Technical adequacy of the microvascular repair is the most important factor in ensuring final patency.

Animals↗
PubMed1975

Clinical applications of free flap transfer in the burn patient.

Free microvascular flap transfer is indicated in situations in which flap coverage is required and no local flap is available. The technique of transfer of a groin flap based on the superficial circumflex iliac vessels was described. The procedure has been applied to two patients with acute electrical burns with extensive soft-tissue loss, three patients with scar contractures, and one with osteoradionecrosis. Satisfactory results were achieved in all patients. The procedure is contraindicated if recipient or donor vessels are abnormal or inadequate, and in the face of fulminating infection, general debility, and obesity. With scrupulous attention to indications and contraindications, the procedure is safe, reliable, and a valuable addition to the surgeon's armamentarium.

Adolescent↗