PURPOSE.To describe clinical pharmacist interventions across a range of critical care units (CCUs) throughout the United Kingdom (UK). To identify CCU medication error rate, prescription optimisation and to identify the type and impact of each intervention in the prevention of harm and improvement of patient therapy. MATERIALS AND METHODS.A prospective observational study was undertaken in 21 UK CCUs from [5][6][7][8][9][10][11][12][13][14][15][16][17][18] th Nov 2012. A data collection web portal was designed where the specialist critical care pharmacist (SCCP) reported all interventions at their site. Each intervention was classified as either: medication error, optimisation or consult. In addition, a clinical impact scale was used to code the interventions. Interventions were scored as low, moderate, high impact and life saving. The final coding was moderated by blinded independent multidisciplinary trialists. RESULTS. 20,517 prescriptions were reviewed with 3,294 interventions recorded during the weekdays. This resulted in an overall intervention rate of 16.1%: 6.8% were classified as medication errors, 8.3 % optimisations and 1.0% consults. The interventions were classified as: low impact (34.0%), moderate impact (46.7%) high impact (19.3%) and one case was life saving. Almost three-quarters of interventions were to optimise the effectiveness of and improve safety of pharmacotherapy. CONCLUSIONS. This observational study demonstrated that both medication error resolution and pharmacist led optimisation rates were substantial. Almost 1 in 6 prescriptions required an intervention from the clinical pharmacist. The error rate was slightly lower than an earlier UK prescribing error study (EQUIP). Two thirds of the interventions were of moderate to high impact. Key wordsCritical care, interventions, specialist critical care pharmacist, medication errors, optimisations, impact coding IntroductionThe critically ill patient is at risk of medicines-related adverse events [1], drug interactions and on some occasions inadequate therapy [2]. This risk can be exacerbated by the presence of organ failure or by supportive therapies such as renal replacement therapy. Consequently, interventions to reduce medication errors and optimise therapy are an essential component of patient care. These include electronic prescribing, smart infusion pumps, medicines reconciliation, clinical guidelines and services normally led by a specialist critical care pharmacist (SCCP) [3]. Improving the safety and efficacy of medication therapy in critical care patients is the cornerstone of SCCP activity. Since the first reports of clinical pharmacist interventions in critical care in the mid-1980s [4], there has been a gradual progression from those focused on financial savings in medicine use, to reducing medication errors and more recently to the optimisation of medication therapy [5]. Clinical pharmacists have been reported to improve medicines-related patient outcomes in the use of sedation [6], antimicrobial therapy [7], therapeutic drug m...

Representative clinical impact grades for over 100 common prescribing error and optimisation cases are reported for potential clinical practice and research application. The between professional variability highlights the importance of multidisciplinary perspectives in assessment of medication error and optimisation cases in clinical practice and research.

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Pharmacist-led monitoring in a typical NHS hospital setting was effective at detecting ADRs in newly marketed drugs. However, this effort might have been substantially less time-consuming and more effective were electronic patient records (EPRs) available. Pharmacy computer systems are not designed to be patient focused and are therefore unable to identify patients taking newly marketed drugs. It is argued that future EPR and computerised patient-specific prescribing systems should be designed to capture this data in the same way as some US systems are currently able to do.