TY - JOUR T1 - Colistin methanesulfonate infusion solutions are stable over time and suitable for home administration JF - European Journal of Hospital Pharmacy JO - Eur J Hosp Pharm DO - 10.1136/ejhpharm-2016-001128 SP - ejhpharm-2016-001128 AU - Titiaan E Post AU - Ingrid M C Kamerling AU - Richard C J M van Rossen AU - Jacobus Burggraaf AU - Jasper Stevens AU - Anneke C Dijkmans AU - Harry G M Heijerman AU - Daan J Touw AU - Annelies J van Velzen AU - Erik B Wilms Y1 - 2017/03/18 UR - http://ejhp.bmj.com/content/early/2017/03/18/ejhpharm-2016-001128.abstract N2 - The stability of colistin methanesulfonate (CMS) was determined in quadruplicate in elastomeric home infusion pumps containing 1, 2 or 3 MU CMS and in infusion bags with 2 MU CMS all in 100 mL normal saline. Infusions were stored at room temperature (20°C–24°C) with or without exposure to natural light or refrigerated (4°C–8°C) and protected from light up to 2 weeks. In the initial solution of 2 MU CMS in 100 mL saline sampled immediately after reconstitution and dilution, 1.5% of CMS was hydrolysed to colistin. When stored at room temperature and exposed to natural light, colistin concentration in elastomeric infusion pumps increased to 2.6% in 8 days and to 2.1% when stored at 4°C. CMS stability increases at lower temperatures and higher concentrations. Based on the current data, chemical stability of CMS infusion solution is sufficient for a shelf life of 7 days refrigerated plus 1 day at room temperature. ER -