Post-administration hold & discharge
Most Ac-225 administrations do not require extended in-room hold — discharge timing is driven by clinical observation, measured dose rate at 1 m, and the §35.75 release calculation. The hold area is primarily for vitals, infusion completion, and any acute monitoring before the patient transitions to outpatient instructions.
Hold-area essentials
Restroom controls
Designated post-administration restroom with non-porous surfaces, sit-to-void signage, a routine survey schedule (alpha + gamma), and patient-facing instructions on flushing and handwashing. Restroom door is access-controlled to the cohort, not shared with general clinic traffic.
Hold-area monitoring
Vitals per protocol. Dose-rate measurement at 1 m before release per the §35.75 calculation. RN or NMT present for the duration of the hold; AU available for any clinical question that arises.
Discharge instructions
Written patient and caregiver instructions covering hydration, restroom use at home, contact precautions, and follow-up — tailored to Ac-225, not generic. Day-count fields completed by the AU based on the day-of dose-rate measurement.
Caregiver counseling
Address common alpha-vs.-beta misconceptions directly. Patients and families often arrive having read instructions for other radionuclide therapies and need the differences explained plainly. Document who was present for the counseling.
The post-administration restroom is a frequent source of contamination findings on routine surveys. Specifying floor and wall finishes for cleanability before the first patient tends to cost far less than retrofitting porous flooring after a finding.
- 10 CFR §35.75 — Release of individuals containing unsealed byproduct material.
- NRC Regulatory Guide 8.39 — Release of Patients Administered Radioactive Material.