Patient Is Mistakenly Dispensed 50 Times His Prescription Dosage

ByWendy Ketner, M.D.

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Updated onApril 11, 2019

Patient Is Mistakenly Dispensed 50 Times His Prescription Dosage

This case involves a 41-year-old man that was prescribed potassium iodide by his physician. The patient was prescribed a dosage of 2 drops 4 times a day. The pharmacy mistakenly put on the bottle 10 mL 4 times a day and did not consult the patient regarding the dosage at the time of purchase. The patient was consuming approximately 50 times more than the prescription dosage for a prolonged period before ultimately ending up with iodide intoxication. The patient suffered a host of complications as a result, including thyroid inflammation and fever.

Question(s) For Expert Witness

1. Please describe your background in pharmacy.

2. What safeguards should be in place to prevent this type of incident from occurring?

Expert Witness Response E-060477

inline imageI would like to know if the prescription was received electronically from the prescriber or if this was a hand-written prescription turned in to the pharmacy. Also, what was the total volume dispensed by the pharmacy? 2 teaspoons = 10mL so more than likely, the technician that entered the order in the computer system could have just mistakenly typed the shortcode for teaspoons instead of drops. If the prescription was handwritten, prescribers may abbreviate drops as "gtts". Usually, Potassium Iodide is dispensed in small bottles ( 1 ounce = 30ml glass) with droppers attached. Someone would have had to pour 4 small bottles into a 4-ounce container (10ml 4 times daily=40ml x 30 day supply = 120ml) or label 4 x 1-ounce bottles. I would be surprised if the pharmacy even had 120ml of SSKI in stock. Did the pharmacy have to special order enough to fill the prescription? I would investigate whether the pharmacy computer system has a warning for volume dispensed based on the NDC number of the medication.

inline imageAnother safeguard usually occurs at the insurance company/payer source level. If the pharmacy submits an electronic claim for such a large volume, usually the insurance may reject the claim for payment due to excessive quantity based on a 30 day supply. So another question should be, did the patient pay cash or run the prescription through their insurance? There are multiple steps in the prescription dispensing process where this error should have been caught. I do not expect the pharmacy technician to have the expertise necessary to identify the error when he/she entered the order in the computer system. The pharmacist checking the order would have had the opportunity to catch the error by checking the accuracy of the entered order against the hard-copy or electronic copy of the prescription. Then again labeling 4 bottles of SSKI might have been a sign something was not correct.

inline imageFinally, the pharmacist on duty when the patient came to pick up the prescription had an opportunity to catch the error by educating or counseling the patient about proper use of the medication and asking the patient what the doctor told them about their medication and how to take it.

About the author

Wendy Ketner, M.D.

Wendy Ketner, M.D.

Dr. Wendy Ketner is a distinguished medical professional with a comprehensive background in surgery and medical research. Currently serving as the Senior Vice President of Medical Affairs at the Expert Institute, she plays a pivotal role in overseeing the organization's most important client relationships. Dr. Ketner's extensive surgical training was completed at Mount Sinai Beth Israel, where she gained hands-on experience in various general surgery procedures, including hernia repairs, cholecystectomies, appendectomies, mastectomies for breast cancer, breast reconstruction, surgical oncology, vascular surgery, and colorectal surgery. She also provided care in the surgical intensive care unit.

Her research interests have focused on post-mastectomy reconstruction and the surgical treatment of gastric cancer, including co-authoring a textbook chapter on the subject. Additionally, she has contributed to research on the percutaneous delivery of stem cells following myocardial infarction.

Dr. Ketner's educational background includes a Bachelor's degree from Yale University in Latin American Studies and a Doctor of Medicine (M.D.) from SUNY Downstate College of Medicine. Moreover, she is a member of the Board of Advisors for Opollo Technologies, a fintech healthcare AI company, contributing her medical expertise to enhance healthcare technology solutions. Her role at Expert Institute involves leveraging her medical knowledge to provide insights into legal cases, underscoring her unique blend of medical and legal acumen.

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