2 Materials and Methods Standard 90-mg ticagrelor tablets were prepared by similar methods to emulate oral and NG tube administration; two doses (90 and 180 mg [two 90-mg tablets]) of ticagrelor were examined. For each

method, one or two tablets were placed into a heavy glass mortar and crushed for 60 s with a glass pestle to form a powder. Purified water was used to disperse the crushed tablets. 2.1 Oral Dose Administration A schematic diagram of oral dose administration is shown in Fig. 1. A ticagrelor tablet was placed in a mortar and crushed for 60 s using a pestle. The crushed tablet was transferred to a dosing cup, ensuring that all powder was transferred and none remained on the mortar and pestle. 100 mL of purified water was added to the mortar and stirred for 60 s using the pestle. The total contents of the mortar were transferred to the dosing cup and stirred for

an additional 60 s using the pestle to PF-01367338 concentration ensure that all powder was dispersed. The mortar was flushed with another 100 mL of purified water and stirred for 30 s using the pestle. The total contents were transferred to another dosing cup and stirred for another 30 s to ensure that all remaining tablet particles were dispersed. Each of the suspensions, which would normally be Selleck IWR-1 administered to a patient from the dosing cup, was collected for high performance liquid chromatography (HPLC) analysis of drug recoverability. Fig. 1 Schematic diagram of oral administration. Selleckchem Screening Library HPLC high performance liquid chromatography 2.2 NG Dose Administration A schematic EGFR inhibitor diagram of NG dose administration is shown in Fig. 2. Three types of NG tube were used in the study: polyvinylchloride (PVC), polyurethane (PUR), and silicone. PUR and PVC tubes were 110 cm in length, silicone tubes were 85 cm in length and all tubes were

size CH10. Each NG tube was flushed with 25 mL of purified water using a 50-mL PVC oral enteral syringe. Ticagrelor tablets (90 or 180 mg [two 90-mg tablets]) were placed in a mortar and crushed for 60 s using a pestle. 50 mL of purified water (for both the 90- and 180-mg doses) was added to the mortar and stirred for 60 s using the pestle. The suspension was taken from the mortar using a 50-mL PVC oral enteral syringe, which was then connected to the NG tube at the Luer-lock connection, and the contents, which would normally be administered to a patient at this stage, were passed through the NG tube and collected for HPLC analysis of drug recoverability. Another 50 mL of purified water was added to the mortar and the contents were stirred with the pestle for 60 s. The suspension was removed from the mortar using the same 50-mL oral enteral syringe, which was again connected to the NG tube at the Luer-lock connection, and the contents were passed through the NG tube and collected for HPLC analysis.