Effect of Pharmacist Counseling Intervention on Health Care Utilization Following Hospital Discharge: A Randomized Control Trial

BACKGROUND

Reduction in 30-day readmission rates following hospitalization for acute coronary syndrome (ACS) and acute decompensated heart failure (ADHF) is a national goal.

OBJECTIVE

The aim of this study was to determine the effect of a tailored, pharmacist-delivered, health literacy intervention on unplanned health care utilization, including hospital readmission or emergency room (ER) visit, following discharge.

DESIGN

Randomized, controlled trial with concealed allocation and blinded outcome assessors

SETTING

Two tertiary care academic medical centers

PARTICIPANTS

Adults hospitalized with a diagnosis of ACS and/or ADHF.

INTERVENTION

Pharmacist-assisted medication reconciliation, inpatient pharmacist counseling, low-literacy adherence aids, and individualized telephone follow-up after discharge

MAIN MEASURES

The primary outcome was time to first unplanned health care event, defined as hospital readmission or an ER visit within 30 days of discharge. Pre-specified analyses were conducted to evaluate the effects of the intervention by academic site, health literacy status (inadequate versus adequate), and cognition (impaired versus not impaired). Adjusted hazard ratios (aHR) and 95% confidence intervals (CI) are reported.

KEY RESULTS

A total of 851 participants enrolled in the study at Vanderbilt University Hospital (VUH) and Brigham and Women's Hospital (BWH). The primary analysis showed no statistically significant effect on time to first unplanned hospital readmission or ER visit among patients who received interventions compared to controls (aHR = 1.04, 95% CI 0.78-1.39). There was an interaction of treatment effect by site (p = 0.04 for interaction); VUH aHR = 0.77, 95% CI 0.51-1.15; BWH aHR = 1.44 (95% CI 0.95-2.12). The intervention reduced early unplanned health care utilization among patients with inadequate health literacy (aHR 0.41, 95% CI 0.17-1.00). There was no difference in treatment effect by patient cognition.

CONCLUSION

A tailored, pharmacist-delivered health literacy-sensitive intervention did not reduce post-discharge unplanned health care utilization overall. The intervention was effective among patients with inadequate health literacy, suggesting that targeted practice of pharmacist intervention in this population may be advantageous.

Classifying and predicting errors of inpatient medication reconciliation

BACKGROUND

Failure to reconcile medications across transitions in care is an important source of potential harm to patients. Little is known about the predictors of unintentional medication discrepancies and how, when, and where they occur.

OBJECTIVE

To determine the reasons, timing, and predictors of potentially harmful medication discrepancies.

DESIGN

Prospective observational study.

PATIENTS

Admitted general medical patients.

MEASUREMENTS

Study pharmacists took gold-standard medication histories and compared them with medical teams' medication histories, admission and discharge orders. Blinded teams of physicians adjudicated all unexplained discrepancies using a modification of an existing typology. The main outcome was the number of potentially harmful unintentional medication discrepancies per patient (potential adverse drug events or PADEs).

RESULTS

Among 180 patients, 2066 medication discrepancies were identified, and 257 (12%) were unintentional and had potential for harm (1.4 per patient). Of these, 186 (72%) were due to errors taking the preadmission medication history, while 68 (26%) were due to errors reconciling the medication history with discharge orders. Most PADEs occurred at discharge (75%). In multivariable analyses, low patient understanding of preadmission medications, number of medication changes from preadmission to discharge, and medication history taken by an intern were associated with PADEs.

CONCLUSIONS

Unintentional medication discrepancies are common and more often due to errors taking an accurate medication history than errors reconciling this history with patient orders. Focusing on accurate medication histories, on potential medication errors at discharge, and on identifying high-risk patients for more intensive interventions may improve medication safety during and after hospitalization.