Resumo

MENDOZA-OTERO, F. et al. Assessment of a Tiapride solution for its administration through continuous intravenous perfusion. Farm Hosp. [online]. 2013, vol.37, n.1, pp.10-14. ISSN 2171-8695.  https://dx.doi.org/10.7399/FH.2013.37.1.53.

Objectives: Tiapride is a substituted benzamide classified as an atypical neuroleptic. To our knowledge, there are no published data on its stability prepared as a continuous intravenous infusion. The current study analysed its stability in two different infusion solutions and concentrations over 48 hours. Method: Triplicate samples of tiapride were prepared in 0.9% sodium chloride and in 5% dextrose solutions at final concentrations of 1 and 2 mg/ml. Samples were collected in glass bottles without photoprotection and at room temperature (25 ± 2^oC). Sampling times at 0, 1, 3, 6, 12, 24 and 48 hours included a visual inspection for colour changes and appearance of precipitation as well as pH determination. Tiapride was quantified at selected times by mass spectrometry using high-performance liquid chro-matography. Concentration values in the samples corresponding to 0 hours were given a reference value of 100%. Concentrations in subsequent samples greater than 90% were considered stable. Results: No colour change or precipitation was observed during the study period. pH values ranged between 0.1 and 0.4 units. At 48 hours, the concentration of remaining tiapride in sodium chloride 1 mg/ml and 2 mg/ml was 93.8% and 91.6%, respectively. That in 5% dextrose 1 mg/ml and 2 mg/ml was 96.8% and 94.1%, respectively. Conclusion: Dilutions of tiapride in 0.9% sodium chloride and in 5% dextrose solution, at concentrations of 1 mg/ml and 2 mg/ml, in glass bottles and at room temperature were stable both physically and chemically during 48 hours.

Palavras-chave : Tiapride; Stability study; High performance liquid chromatography; Mass spectrometry.

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