Significant Medication Error Due to Incorrect Warfarin Dosing
Summary
The facility failed to administer medications at the correct dose as per the physician's order for a resident, leading to a significant medication error involving an overdose of Warfarin, an anticoagulant. The resident, who had a history of atrial fibrillation and hypertension, was discharged from a local hospital with specific instructions for Warfarin dosing. However, the facility transcribed the orders incorrectly, resulting in the resident receiving 4.5 mg of Warfarin daily instead of the prescribed 2 mg or 2.5 mg. This error was not identified or corrected promptly, leading to a critically high INR level of 8.19, which was reported to the facility. Despite the critical lab results indicating a dangerously high INR, the facility did not take immediate action to address the overdose. The results were faxed to the pharmacy, but there was no documented follow-up with the provider regarding the critical lab results or the pharmacy's recommendation to administer Vitamin K. The resident's INR remained critically high, and there was a delay in obtaining a stat lab draw to reassess the INR levels. The lack of timely intervention and communication with the provider contributed to the resident's prolonged exposure to the risk of bleeding due to the Warfarin overdose. Interviews with facility staff revealed a breakdown in the medication administration and monitoring process. The nurse practitioner did not review the Warfarin orders closely, and the admission process failed to ensure accurate transcription and verification of medication orders. The facility's procedures for handling critical lab results and coordinating with the pharmacy and provider were inadequate, leading to a failure to address the resident's critical condition promptly. This deficiency highlights significant lapses in medication management and communication within the facility.
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