r-tPA bei der Keratoplastik à chaud. Bericht über 50 Patienten

BACKGROUND: Fibrinolytic treatment using recombinant plasminogen activator (r-tPA) has been reported in cataract surgery; however, reports are lacking with respect to complex surgical interventions including keratoplasty because of anterior segment infections.

PATIENTS AND METHODS: This report deals with a prospective study comprising 50 patients (50 eyes) suffering from a serpent ulcer treated by keratoplasty à chaud. r-tPA (25 micrograms) was instilled intracamerally at the end of surgery in 25 eyes.

RESULTS: The 25 eyes treated with r-tPA were subsequently less inflamed than the control population (decrease in inflammatory cells 1.5 days vs 7 days, fibrin reaction 1x vs 12x), had highly significantly better visual acuity and there was significantly reduced inpatient hospitalization (median 9.9 vs 19.3 days). No hemorrhages were observed in either population; medically treated infection recurrences (S. aureus, C. tropicalis, acanthameba) were observed in 3 and primary graft failure or rejection in both populations 3x.

CONCLUSIONS: This study showed that perioperative application of r-tPA had a beneficial effect. This therapeutic avenue should be further evaluated in a randomized, double-masked multicenter study.