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UNITED STATESNUCLEAR REGULATORY COMMISSIONOFFICE OF NUCLEAR MATERIAL SAFETY AND SAFEGUARDSWASHINGTON, D.C. 20555

April 3, 1998

**Addressees**:

All U.S. Nuclear Regulatory Commission nuclear pacemaker licensees.

**Purpose**:

The U.S. Nuclear Regulatory Commission is issuing this information notice to remind the addressees of theirresponsibilities regarding the reporting and follow-up requirements for nuclear-powered pacemakers. The requirementsinvolve tracking the patients until explantation and return of the explanted nuclear-powered pacemakers to themanufacturer.

It is expected that recipients will review the information for applicability to their facilities and consider actions, asappropriate, to avoid problems. However, suggestions contained in this information notice are not new NRC requirements;therefore, no specific action nor written response is required.

**Description of Circumstances**:

Recently, a patient with a nuclear-powered pacemaker (pacemaker) expired in a different hospital from where thepacemaker was implanted. This hospital, not licensed by NRC, explanted the pacemaker and contacted the licensedhospital. The licensee made arrangements to return the pacemaker to the manufacturer. The manufacturer never receivedthe pacemaker and informed the Radiation Safety Officer (RSO) at the licensed facility of the fact. The licensee contactedNRC to report the lost pacemaker. Six weeks had passed between the explantation of the pacemaker and the reporting toNRC. The pacemaker's 178,000 MBq (4.8 curie) plutonium-238 sealed source has not been recovered.

**Discussion**:

The event described above might have been avoided had the licensee addressed the possibility of the patient dying at ahospital other than the licensee's hospital. A standard materials license condition places the responsibility on the licensee(the implanting hospital) for the follow-up, explantation, and return of the pacemakers to the manufacturer, for properdisposal.

The loss of a pacemaker has an important regulatory and safety significance. The lack of control and security of thelicensed material can lead to unnecessary exposures to the public.

In recognition of the hazards associated with the event of a lost pacemaker or the improper disposal of a pacemaker, NRCis reminding licensees of their commitment and responsibility to follow-up on each pacemaker patient, to removepacemakers when patients no longer need them or die, and to return explanted pacemakers to the manufacturers for properdisposal. It is critical that the licensees make every reasonable effort to maintain contact with the pacemaker patient inaccordance with their licensing commitments and the manufacturer's protocol. Licensees are responsible for the pacemakerfrom receipt, until return to the manufacturer.

NRC has been licensing pacemakers for approximately 25 years. Specifically, Section 20.2201, Title 10 of the U.S. Codeof Federal Regulations, requires licensees to report to NRC immediately after it is known when any material is lost, stolen,or missing. When obtaining a nuclear pacemaker license, applicants must make certain commitments to ensure compliancewith the above regulations, as well as other commitments to ensure public health and safety. These commitments areincluded in the license as license conditions. Under the direction of license conditions, the following occurrences alsorequire a report to NRC, within 24 hours: the death of a pacemaker patient, and any adverse reaction to the pacemaker,and/or any malfunction involving the pacemaker system, including the leads. Additionally, a report to NRC is requiredwithin 10 days of loss of contact with a pacemaker patient.

With regard to the proper disposal of explanted pacemakers, licensees may wish to consider making prior contractarrangements with a carrier for the delivery of explanted pacemakers from their facilities to the manufacturer before theneed for such service arises. NRC recognizes that not all carriers will deliver packages containing radioactive materialssuch as plutonium. However, the licensee, working with the manufacturer, may find a carrier to transport this radioactivematerial safely to the manufacturer for proper disposal.

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