Abstract
The association of morphine ziconotide or sufentanil ziconotide was used to manage cancer pain. Moving these patients is sometimes difficult. In order to transport these syringes for pump refilling, it could be interesting to demonstrate the stability of the mixture and so to be able to ensure the best transport conditions of syringes. A stability indicating UPLC-DAD method was developed and validated according to the ICH guidelines. Fur mixtures of each association have been stored in 5 ± 3°C and 25 ± 2°C and were evaluated for seven days and compared to the initial observed concentrations. The stability of these associations was demonstrated at 5°C for seven days thanks to relative concentrations (95% confidence intervals of the mean of three samples) systematically positioned between 95% and 105%. No degradation product was observed during the stability study. This study shows the stability of these association morphine ziconotide or sufentanil ziconotide at 5°C for seven days in polypropylen syringes. This result will allow the transport of the preparation under optimal conditions. Advance preparations for intrathecal pump refills could also be feasible.
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