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Table 1 Examples of medication errors by severity index

From: Assessing the severity of medication administration errors identified in an observational study using a valid and reliable method

MINOR (Severity index between 0 and 3)

An excess amount of Hyabak® (ophthalmic solution, 0.15%) was administered into the patient's right eye

The patient was prescribed dimethicone (drops, 75 mg/mL) but was administered one tablet (40 mg)

MODERATE (Severity index between 3 and 7)

 Patient was on spironolactone (tablet, 100 mg). However, the medication was not administered

 The patient was prescribed furosemide (solution for injection, 10 mg/mL). The dilution manual advises infusion between 1 and 2 min; however, administration was performed in 11 s

SEVERE (Severity index higher than 7)

 Warfarin* (tablet, 5 mg) was offered to the patient; however, the medication was prescribed for another patient. Intervention was performed before administration

 Patient on hydralazine (tablet, 25 mg). There was an instruction not to administer the antihypertensive on hemodialysis days. However, the drug was administered on the same day as hemodialysis

  1. *Only case that required interventions to avoid MAEs