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Biomedical subjects

M R Lewis

Publications and source records attributed to M R Lewis.

At least 55 records · Page 3Linked to original sources

Further experiences with bovine arterial grafts.

Following favorable laboratory experience with the chemically modified bovine arterial graft (reported previously), we have used it for arterial reconstruction of the lower extremity in 84 operations upon 79 patients. The over-all patency rate was 42%. There were 7% infections, which usually occurred in secondary and tertiary procedures. Five percent of the grafts became aneurysmal. These results, published reports, and the results of a questionnaire mailed to vascular surgeons indicates similarity of experience. The disadvantages of frequent early thrombosis of undetermined cause, aneurysmal degeneration in approximately 4%, the considerable cost, and the nonavailability of the graft in different dimensions have resulted in our discontinuation of use for arterial reconstructions.

Aneurysm↗

Management of thoracic outlet syndrome.

This overall management program for thoracic outlet compression syndrome is based upon experience with 153 extremities in 149 patients and the results of others. The following conclusions are documented and discussed. 1) Diagnosis is based chiefly upon history; physical signs are inconstant and often absent. 2) Major vascular problems are unusual; angiography is not always necessary. 3) Electromyography is not always critical but does aid in diagnosis of carpal tunnel syndrome. 4) Non-operative treatment relieves most patients; operative decompression is indicated for a minority. 5) Transxillary first rib resection, with removal of cervical rib is the best operation. 6) Carpal tunnel decompression should be done concomitantly when needed. 7) Operation is relatively safe.

Adult↗