Medication regimen complexity vs patient acuity for predicting critical care pharmacist interventions

Area of Science:

• Pharmacology
• Health Services Research
• Critical Care Medicine

Background:

• Quantifying critical care pharmacist (CCP) workload is crucial for expanding CCP services.
• Medication regimen complexity is a proposed pharmacist-oriented metric linked to patient outcomes and interventions.
• Traditional patient acuity metrics may not fully capture pharmacist workload.

Purpose of the Study:

• To compare the relationship between medication regimen complexity and pharmacist interventions versus traditional patient acuity metrics.
• To evaluate the predictive power of medication regimen complexity for pharmacist workload.

Main Methods:

• Post hoc analysis of a prospective, observational study involving 100 mixed medical/surgical ICU patients.
• Collected pharmacist interventions, patient demographics, medication data, and outcomes.
• Calculated Medication Regimen Complexity-Intensive Care Unit (MRC-ICU) and Acute Physiology and Chronic Health Evaluation (APACHE) II scores.
• Used Spearman rank-order correlation and multiple linear regression analysis.

Main Results:

• Both MRC-ICU and APACHE II scores correlated with ICU interventions at 24 hours, 48 hours, and ICU discharge.
• The relationship between APACHE II scores and interventions was not sustained in adjusted analyses.
• MRC-ICU scores demonstrated a stronger, sustained relationship with pharmacist interventions after adjusting for covariates.

Conclusions:

• Pharmacist-oriented scores, like MRC-ICU, show a stronger association with pharmacist interventions than patient acuity scores.
• Findings support the need for tailored metrics to predict pharmacist workload.
• These metrics can help optimize CCP services and improve patient care.