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Biomedical subjects

D M Frey

Publications and source records attributed to D M Frey.

3 recordsLinked to original sources

Randomized clinical trial of Lichtenstein's operation versus mesh plug for inguinal hernia repair.

BACKGROUND: Two of the most commonly used open prosthetic tension-free techniques for inguinal hernia repair are Lichtenstein's operation and the mesh plug repair. The technique of choice remains a subject of ongoing debate. The objective of the present investigation was to compare the two surgical procedures with respect to associated morbidity and recurrence rates. METHODS: Five hundred and ninety-five patients with 700 primary or recurrent inguinal hernias were randomized to undergo either Lichtenstein's operation or mesh plug repair. The primary endpoint of the investigation was the recurrence rate 1 year after surgery. Secondary endpoints were perioperative complications and reoperation rates. RESULTS: At 12-month follow-up, 597 hernia repairs (85.3 per cent) were evaluated. There were no significant differences regarding recurrence rates and perioperative complications. However, there was a significant difference in the overall reoperation rate between the two treatment groups, with 13 reoperations (4.2 per cent) in the Lichtenstein group and four (1.4 per cent) in the mesh plug group (P = 0.047). CONCLUSION: Lichtenstein's operation and the mesh plug repair are comparable with respect to perioperative complications and recurrence rates.

Adult↗

Dissection along the optic nerve axis by a BB.

A 13-year-old Hispanic boy suffered a perforating injury to his right eye from a BB. The clinical examination and computed tomographic scan revealed questionable light perception and a dense foreign body, consistent with a BB, situated behind the globe. A vitrectomy was performed that was unsuccessful. Six months later the eye was enucleated, and the BB was found to be within the optic nerve sheath. Foreign bodies within the optic nerve are uncommon. The foreign body in this case, a BB, entered the optic nerve through the nerve head after traversing the globe. The histopathologic findings in this unusual case are presented herein.

Adolescent↗

Changes in bovine mammary insulin binding during pregnancy and lactation.

1. Binding of insulin to microsomes from mammary glands of pregnant and lactating dairy cows was characterized. 2. Binding affinities of the insulin receptor did not change from pregnancy to lactation. 3. Maximal specific binding occurred in microsomes from cows in mid-pregnancy and declined in microsomes from cows in late pregnancy. 4. Insulin binding continued to decrease from early to mid-lactation and increased during late lactation. 5. Results indicate that decreased sensitivity in mammary tissue from lactating dairy cows is at least in part a result of a reduction in insulin receptor number. 6. Results demonstrate further physiological differences between the ruminant and non-ruminant mammary gland.

Animals↗