Search PubMed⌕ Search

Biomedical subjects

B Langer

Publications and source records attributed to B Langer.

386 records · Page 22Linked to original sources
PubMedDate not supplied

[Prevalence of intraabdominal aneurysm in elderly patients].

BACKGROUND: A study in old patients on the incidence of aneurysms in abdominal arteries (AAA) and on the maximum diameter of the aorta below the renal arteries in those patients without arterial dilatation. MATERIAL AND METHODS: The study comprised 411 individuals, 218 women and 153 men with an average age of 74.4 years. Physical examination of the abdomen (EF) and abdominal ultrasonography (US) were done, and the latter was considered the "golden standard" of reference. In relation to the aorta, it was considered as an aneurysm the maximum artery diameter larger than 30 mm and for the iliac arteries, the maximum diameter larger than 15 mm. RESULTS: The US showed the presence of aneurysm in the aortic-iliac territory in nine patients, one woman and eight men, corresponding to a prevalence of 2.1%, 4.1% in men and 0.4% in women. Two such aneurysms were in the iliac arteries (one aneurysm in a common iliac artery) and the other seven in the aorta below the renal arteries. The bearers of iliac aneurysm are men. The prevalence of the AAA was of 1.7% (7/411), 3.1% in men and 0.4% in women. The EF showed suspicion of the presence of aneurysm in 3 of these patients. The other 6 patients had no aneurysm. Considering all the aneurysms of the aortic-iliac territory, the EF had a sensitivity of 33.3%, a specificity of 99% and a positive prediction value of 33.3%. Considering only AAA, the sensitivity of the EF was 42.8%, the specificity 98.5%, and the positive prediction value, 33%. In the 402 patients without arterial aneurysm the maximum diameter of the aorta varied from 11 to 29 mm, with an average value of 16-21 mm. CONCLUSIONS: US is a non-invasive diagnostic procedure that should be used for the old age population.

Age Factors↗
PubMedDate not supplied

Bending overload and implant fracture: a retrospective clinical analysis.

Thirty-nine patients with implant fractures treated by three of the authors have been analyzed as to probable causes. Thirty-five (90%) of the fractures occurred in the posterior region. Thirty (77%) of the prostheses were supported by one or two implants, which were exposed to a combination of cantilever load magnification and bruxism or heavy occlusal forces. It was concluded that prostheses supported by one or two implants and replacing missing posterior teeth are subjected to an increased risk of bending overload. The literature review indicates that the fracture frequency is low in these situations and this study demonstrates that with appropriate treatment planning, such overload situations can essentially be prevented.

Alveolar Bone Loss↗
PubMedDate not supplied

[Surgical treatment of telangiectasis].

The surgical treatment of telangiectasis synchronous to sclerotherapy is presented in this paper. Two female patients with extensive telangiectasis of the lower limbs comprise our report. They were considered typical cases for application of the proposed technique: abolishing venous reflux. The adjacent veins were resected through skin incisions of about 2 mm with crochet hooks, under local anesthesia, immobilized with adhesive tape. Sclerotherapy was performed simultaneously. The cosmetic result was excellent in both cases, with complete removal of the telangiectasis. This procedure should be considered the method of choice in the treatment of telangiectasis resulting from obvious venous reflux.

Drainage↗
PubMedDate not supplied

[Survival after aorto-femoral shunt with Dacron prosthesis].

The purpose of this paper is to establish the survival rate of patients submitted to aorto-femoral bypass grafting and compare it with the general mortality rate of the population in the State of São Paulo. The records of 210 patients with aorto-femoral bypass grafts and mean age of 54 years were analysed according the Kaplan and Meyer method. The survival curves of the normal population with the age of 55 and 70 years were used for comparison. Our results are comparable with those reported in the international literature. The aorto-femoral atherosclerotic disease Hás the same features wherever lives the patient. The death is caused mainly by cardiac disease. In our patients, however, the infection of the prosthesis was also an important factor in the fatal outcome of the disease. After ten years about half of the patients submitted to an aorto-femoral bypass grafting are still alive.

Aged↗
PubMedDate not supplied

[Infection involving arterial prosthesis: clinical picture, etiology, and predisposing factors].

Thirty patients were operated for arterial reconstruction with synthetic grafts. They presented one of the following complications: 1) prosthesis exposed by a cutaneous fistula; 2) prosthesis in communication with a hollow viscus; 3) prosthesis involved by pus; 4) positive culture of a fragment of the prosthesis or of the surrounding secretion. The clinical manifestations were cutaneous fistula in 21 patients (70%), external bleeding in 14 (47%), exposition of the prosthesis in five (17%), anastomotic aneurysm in five (17%), and enteric fistula in four (13%). The infection became evident during the first postoperative year in half of the patients. The most important agents of infection were staphyilococci and Gram negative bacteria.

Adult↗
PubMedDate not supplied

[Surgical treatment of infections involving arterial prosthesis in aorto-femoral position].

This article is to evaluate the results of surgical treatment of aorto-femoral graft infections. The records of 20 patients with aorto-femoral graft infections were reviewed. The patients were submitted mostly to a combination of surgical procedures. They were: a) conservative treatment; b) partial removal of the infected graft and c) total removal of the infected graft. The removal of the prosthesis, partial or total, was followed by a new arterial reconstruction in some patients. The final treatment was: total removal of the infected graft in 11 (55%) patients, total removal plus arterial reconstruction in six, partial removal in two and partial removal plus arterial reconstruction in one. The results of treatment were presented as the survival rate and the effective palliation (patient alive, lower limbs preserved and infection cured). The survival rates after one month, 12, 24, 36 and 48 months were respectively: 80%, 60%, 53%, 42% and 27%. The effective palliation rates after one month and after 48 months were respectively 50% and 27%. The highest effective palliation rate was obtained when the infected prosthesis was removed and a new arterial reconstruction performed. We conclude that the treatment of choice of aorto-femoral graft infections seems to be the total removal of the graft followed by new arterial reconstruction.

Adult↗
PubMedDate not supplied

Ischemic rest pain of the lower extremities. Treatment with peripheral nerve crush.

The authors report the results obtained from peripheral nerve crushing in the treatment of ischemic rest pain and/or trophic lesions of toes and feet. They studied retrospectively 102 patients who were submitted to peripheral nerve crushing at the "Hospital das Clínicas da Universidade de São Paulo" during a sixteen-year period, from March 1971 to April 1987. These patients had no other choice, either clinical or surgical. The results were evaluated under three aspects: elimination of pain, evolution of trophic lesions and postoperative complications. The follow-up period varied from 1 month to 6 years (mean of 18 months). The results showed immediate elimination of pain in 94% of the patients. The remaining 6% were reoperated on within 24 to 48 hours, due to technical failure in identifying some of the nerves during the first operation. Regarding the trophic lesions, in 71% of the patients the results were good and the remaining underwent amputation at leg or thigh. The worst results were obtained in patients with necrotic lesions (p < 0.05). Three patients presented surgical wound dehiscence. The authors conclude that peripheral nerve crushing constitutes a valid alternative for a select group of patients with uncontrollable ischemic rest pain in the feet.

Adult↗