Silverzine 25gm

Indications

Silverzinezine cream is indicated in-
 

• The topical prophylaxis against bacterial colonization and infection in burn wounds.
• The topical antibacterial management of certain contaminated or infection-prone wounds, other than burns.

Pharmacology

The mechanism of Silver Sulfadiazine's antibacterial action has not been fully elucidated. After exposure to the drug, structural changes in the bacterial cell membrane occur, including distortion and enlargement of the cell and a weakening of the cell wall membrane. This is accompanied by reduced viability in sensitive strains. The silver sulfadiazine molecule dissociates and the silver moiety is bound to the bacterial cells. It is believed that, after penetrating the cell wall, the silver moiety is attached to deoxyribonucleic acid (DNA) and prevents bacterial cell proliferation. There is approximately 100 times more DNA in mammalian cells than in bacterial cells. It is thought that the ratio of silver sulfadiazine to bacterial DNA is sufficiently high to prevent bacterial division but the corresponding ratio to epithelial DNA is low enough not to block epithelial cell regeneration. The sulfadiazine moiety also provides a bacteriostatic action against sensitive organisms. In adults, up to 10% of the sulfadiazine may be absorbed and 60 to 85% of the absorbed amount is excreted in the urine. In children with 13% body surface area burns, the urinary sulfadiazine concentration was 31.8 mg/L.

Dosage & Administration

The burn wounds are cleansed, and Silver Sulfadiazine is applied over the burn wound. The burn areas should be covered with Silver Sulfadiazine at all times. The cream should be applied once to twice daily to a thickness of approximately 1/16 inches or 1.5 mm. Whenever necessary; the cream should be reapplied to any areas from which it has been removed by patient activity. If individual patient requirements make dressings necessary, they may be used. Reapplication should be ensured immediately after hydrotherapy. Treatment with Silver Sulfadiazine should be continued until satisfactory healing is occurred, or until the burn site is ready for grafting. The drug should not be withdrawn from the therapeutic regimen while there remains the possibility of infection except if a significant adverse reaction occurs.