Experimental studies on the hydration of thermally damaged erythrocytes.
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Biomedical subjects
Publications and source records attributed to S Baar.
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BACKGROUND: Local antimicrobial systems have gained importance, as illustrated by current research on drug delivery systems (DDS). We aimed to develop materials that combine hemostatic and antimicrobial efficacy as well as adhesiveness for use in surgical tissue management. MATERIALS AND METHODS: Materials were evaluated by in vitro studies employing microbiological and technological methods. RESULTS: Antimicrobial impregnation of a collagen fleece, which is a pre-coated fibrinogen-based adhesive and therefore ready-to-use (TachoComb), is significantly more efficient--both in terms of the antimicrobial efficacy (p < 0.001) as well as the adhesive strength (p = 0.03) -than coating an antibiotic-containing collagen fleece "on-site" with fibrin glue. CONCLUSION: Due to ease of practical handling and favorable pharmacoeconomics, this DDS is recommended for both open and minimally invasive surgery.
BACKGROUND: Minimally invasive pediatric surgery (MIPS) has a solid tradition in which technique and technology have made key contributions to an already broad range of indications. This surgical method still has a deficiency with regard to tissue management of large-area defects, however. Sealing techniques can further expand the range of application. METHOD: Technological evaluation provided outstanding data of fleece-bound collagen- and fibrinogen-based sealing systems (TachoComb) on biodegradability, adhesive strength and practicability. A relevant instrument was developed for MIS application and was introduced as the ATCS (AMISA-TachoComb-System). PATIENTS: From 1993-2000, ATCS sealing was carried out in the scope of thoracoscopy (105 procedures) and laparoscopy (53 procedures) and specifically for recurring pneumothorax, traumatic chylothorax and splenic trauma. RESULTS: Pneumothorax: 59 ACTS procedures in 49 patients (mean age: 11.4 yrs) with 6 reoperations (10.2%) and one recurrence (1.7%). The drainage dwell time was reduced (p < 0.05) using a conventional comparison (31.9 hours vs. 17 days) and further relevant parameters were also reduced. Chylothorax: 3 ATCS procedures in 3 patients (mean age: 6.3 years) with reduction in the drainage dwell time (p < 0.05) based on a conventional comparison (35 hours vs. 18 days). Splenic trauma: 17 ATCS procedures in 16 patients (mean age: 8.9 years) with one re-operation (5.9%) for associated liver trauma, organ conservation in each case and no significant drainage volumes. CONCLUSION: The ATCS is an innovative instrument for MIPS and ca be employed for efficient and socio-economic (e.g. DRGs) closure of large-area defects.