ICU · Pharmacology

ICU medication safety: prescribing errors, drug interactions, and prevention

Also known as Medication safety ICU · Prescribing errors · Drug interactions · ICU pharmacy · Medication reconciliation · Adverse drug events

ICU medication safety: critically ill patients receive 10-20+ medications simultaneously → high risk across all FIVE stages of the medication-use process (prescribing → transcribing → dispensing → administration → monitoring). Reported ICU medication-error rates vary widely across studies (8.1–2344 per 1000 patient-days) and serious or life-threatening harm is uncommon (1–5% of medication errors). Common errors: (1) WRONG DRUG (LASA — dopaMINE vs DOBUTamine, HYDROmorphone vs morphine, KCl vs NaCl). (2) WRONG DOSE (renal/hepatic adjustment missed — vancomycin, beta-lactams, gabapentin). (3) WRONG ROUTE (IV potassium bolus — fatal; intrathecal vincristine). (4) DRUG INTERACTIONS (QT — azithromycin + ondansetron; CYP3A4 — azoles + tacrolimus; serotonin — SSRIs + linezolid). (5) DUPLICATE THERAPY (two antiplatelets, two PPIs). HIGH-ALERT medications (insulin, anticoagulants, opioids, sedatives, neuromuscular blockers, concentrated electrolytes, vasopressors) demand standardisation, independent double-checks, and closed-loop technology — CPOE with decision support (55% fewer serious medication errors), barcode administration (41% fewer administration errors), smart pumps. Prevention: pharmacist on ICU rounds (66% fewer preventable prescribing ADEs), medication reconciliation at every transition (45% fewer medication discrepancies), and a no-blame reporting culture.

Checked against its sources on 14 Oct 2026