Kinetics of fluid delivery from methylcellulose sponges.
J Glaucoma
; 7(1): 16-21, 1998 Feb.
Article
en En
| MEDLINE
| ID: mdl-9493110
PURPOSE: The authors quantitatively evaluate the kinetics of fluid transfer from microsurgical sponges in a laboratory model to understand the kinetics of mitomycin C (MMC) delivery. METHODS: The amount of fluid transferred from soaked methylcellulose (Weck-cel, Weck Inc., Durham, NC, U.S.A.) sponges to small pieces of hydrated or dry filter paper used to simulate episcleral tissue and Tenon fascia was measured as a function of time, sponge size, hydration status of the filter paper, and technique of sponge application. RESULTS: The time course of fluid delivery from methylcellulose sponges to filter paper was nonlinear and characterized by a rapid delivery phase over the first 15 to 30 seconds, followed by a slow phase extending to at least 5 minutes. Sponge size and baseline hydration of the paper significantly influenced the rate and amount of fluid delivered, as did replacing the sponge every minute with a new sponge. CONCLUSION: The transfer of fluid from a microsurgical sponge displays nonlinear kinetics, with the majority of delivery occurring in the first 15 to 30 seconds. Sponge size, hydration of the recipient tissue, and technique of sponge application are significant variables influencing the amount of fluid, and therefore mitomycin C, delivered.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Tapones Quirúrgicos de Gaza
/
Mitomicina
/
Metilcelulosa
/
Antibióticos Antineoplásicos
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
J Glaucoma
Asunto de la revista:
OFTALMOLOGIA
Año:
1998
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Estados Unidos