The following was received from the State of
Kentucky via e-mail:
The University of Kentucky reported that a patient received less dose than prescribed on 8/20/2019. The patient was prescribed to receive 429.2 MBq (11.6 mCi) of Y-90 microspheres (Sirtex Medical model SIR- Spheres). A microsphere dose of 425.5 MBq (11.5 mCi) was drawn from the unit vial into the administration vial. However, the patient only received an activity of 316.72 MBq (8.56 mCi), which is 26.2 percent less than prescribed, because some microspheres remained in the administration system. Additionally, it was difficult to draw 429.2 MBq (11.6 mCi) from the 7.13 GBq (192.6 mCi) in the unit vial as it represented only a small portion of the whole. The patient and referring physician were notified. Corrective actions included ordering a dose calibrated to more closely provide the activity needed for the date and time of administration. If the activity to be administered is low, the university will ensure that the activity drawn is 10 percent greater than prescribed. More flushes of the system will also be performed in hopes of pushing more of the residual activity into the patient.
Kentucky Incident Number - 190008.
NMED Item Number - 190442
A Medical Event may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.