The State of
Illinois provided the following information via email:
On June 17, 2009, the [Illinois Emergency Management] Agency was contacted with a request to make a dose estimate to a fetus as a result of administration of radioiodine to a patient who was later found to be pregnant. Subsequently when additional information was requested to determine the appropriate parameters, the [Illinois Emergency Management] Agency was advised that the administration had occurred 3 years earlier and that the child had been delivered after a full term pregnancy and was receiving thyroid hormone therapy. The physician indicated that on May 1, 2007 a patient was given 102.9 milliCi of I-131 as a treatment for recurrence of cancer associated with a previous thyroidectomy conducted in 2006. The physician had previously treated the patient with I-131 in 2006 following surgery and had conducted patient interviews/training regarding administration of I-131 at that time, so that when she represented herself for an additional treatment dose, he had been lead to believe she understood the contraindications. The doctor stated that he was told no when he asked if she was pregnant. No independent test was conducted. On June 11, 2007, he was contacted by the physician's obstetrician who advised that she was at 32 weeks gestation as of June 11, 2007. This would infer she was 25-27 weeks (6 month) pregnant at the time of the second administration a month earlier.
Calculations were performed by the [Illinois Emergency Management] Agency for a thyroid patient following ANSI Std. N13.54-2008 which lead to an estimated dose to the fetus of 86 Rad. This event remains open pending submission of the required report from the physician and follow up by the [Illinois Emergency Management] Agency.
IL Event No.: IL 10044