In a prior post from this week concerning pharmacy error injury, our Maryland Medication Error Attorneys at Lebowitz & Mzhen Personal Injury Lawyers discussed a recent study published by the Institute of Medication Practices (ISMP), and the ongoing problem with drug naming standards in extended release medications.
In this study, the ISMP revealed a series of cases reported to the institute, in which drug name suffix medication mistakes have frequently occurred. This study showed specific case examples in order to establish clearer naming conventions in the industry, and improve comprehensive pharmacist and patient awareness—to prevent pharmacy error injury and misfills in the future.
The ISMP study reported these specific medication mistake cases:
• Physicians often prescribe extended release products without the correct suffix, or with a suffix that does not exist for that particular product.
• In an analysis of 402 prescribing errors published by Medscape Pharmacists, the most common type of error in the study (280 cases, 69.7%) was failure to specify the controlled release formulation.
• The ISMP received reports of cases in which pharmacists dispensed Metadate ER instead of Metadate CD—two different extended release forms of methylphenidate-UCB, a stimulant medicine commonly used to treat ADHD. In one case, a prescription for Metadate CD 20 mg was misfiled at a pharmacy, where the staff dispensed Metadate ER 20 mg.
• Some products have multiple suffixes for different formulations of the same drug. Diltiazem products for example (calcium channel blockers) are used to slow the heart rate and normalize the heart rhythm in hypertension and arrhythmia. The many suffixes for Diltiazem include SR, CD, XR, XT, and LA.
• Electronic prescribing can also lead to medication errors on behalf of the prescriber. In one case, a prescriber electronically selected metroprolol tartrate instead of metoprolol succinate because of choosing incorrectly on his PDA.
According to this report, pharmacists, practitioners, and patients should take extra care when reviewing the different formulations and medication names, especially if the medication is available in more than one dosage form.
The ISMP recommends the following medication error prevention checklist: