Are Lists of Potentially Inappropriate Medications Associated with Hospital Readmissions? A Systematic Review

BACKGROUND

Suboptimal prescribing, including the prescription of potentially inappropriate medications (PIM), is frequent in patients aged 65 years and older. PIMs are associated with adverse drug events, which may lead to hospital admissions and readmissions for the most serious cases. Several tools, known as lists of PIMs, can detect suboptimal prescription.

OBJECTIVE

This systematic review aimed to identify which lists of PIMs are associated with hospital readmission of older patients.

PATIENTS AND METHODS

MEDLINE, the Cochrane Library, EMBASE, and clinicaltrials.gov were searched for the period from 1 January 1991 up to 12 May 2022 to identify original studies assessing the association between PIMs and hospital readmissions or emergency department (ED) revisits within 30 days of discharge in older patients. This study is reported in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 Checklist, and the risk of bias was assessed with the Newcastle-Ottawa Quality Assessment Scale for Cohort Studies (NOS) and the revised Cochrane risk-of-bias tool for randomized trials (RoB 2).

RESULTS

A total of six studies presenting four different lists of PIMs were included. Readmission rates varied from 4.3 to 25.5% and the odds ratio (OR) between PIMs and hospital readmission varied from 0.92 [95% confidence interval (CI) 0.59; 1.42] to 6.48 [95% CI 3.00; 14.00]. Only two studies found a statistically significant association between a list of PIMs and hospital readmission. These two studies used different tools: the Screening Tool of Older Person's Prescriptions (STOPP) and the Screening Tool to Alert Doctors to Right Treatment (START) and a combination of Beers Criteria® and STOPP and START.

CONCLUSION

This systematic review shows that the association between list of PIMs and 30-day unplanned readmissions remains unclear and seems dependent on the PIM detection tool. Further studies are needed to clarify this association. PROSPERO registration number CRD42021252107.

Safety of Elderly Fallers: Identifying Associated Risk Factors for 30-Day Unplanned Readmissions Using a Clinical Data Warehouse

BACKGROUND

Hospital readmissions are a major problem in the older people as they are frequent, costly, and life-threatening. Falls among older adults are the leading cause of injury, deaths, and emergency department visits for trauma.

OBJECTIVE

The main objective was to determine risk factors associated with a 30-day readmission after index hospital admission for fall-related injuries.

METHODS

A retrospective nested case-control study was conducted. Data from elderly patients initially hospitalized for fall-related injuries in 2019, in 11 of the Greater Paris University Hospitals and discharged home, were retrieved from the clinical data warehouse. Cases were admission of elderly patients who subsequently experienced a readmission within 30 days after discharge from the index admission. Controls were admission of elderly patients who were not readmitted to hospital.

RESULTS

Among 670 eligible index admissions, 127 (18.9%) were followed by readmission within 30 days after discharge. After multivariate analysis, men sex (odds ratio [OR] = 2.29, 95% confidence interval [CI] = 1.45-3.61), abnormal concentration of C-reactive protein, and anemia (OR = 2.22, 95% CI = 1.28-3.85; OR = 1.85, 95% CI = 1.11-3.11, respectively) were associated with a higher risk of readmission. Oppositely, having a traumatic injury at index admission decreased this risk (OR = 0.47, 95% CI = 0.28-0.81).

CONCLUSIONS

Reducing early unplanned readmission is crucial, especially in elderly patients susceptible to falls. Our results indicate that the probability of unplanned readmission is higher for patients with specific characteristics that should be taken into consideration in interventions designed to reduce this burden.

Do clinical pharmacy activities have an impact on the rehospitalisation rate of elderly patients admitted to a MUPA unit for a fall?

OBJECTIVE

to evaluate the effect of clinical pharmacy interventions on the unplanned rehospitalisation rates of elderly people admitted following a fall to the emergency medical treatment for the elderly unit (médecine d'urgence de la personne âgée [MUPA]) in a teaching hospital.

DESIGN AND MEASURES

this was a longitudinal, comparative pilot study. Patients aged at least 75 who were admitted to the MUPA unit following a fall, who had at least two chronic diseases, and who were being treated with two or more medications were included between 1 February 2018 and 30 June 2018 and were followed for 90 days. The main outcomes were the unplanned rehospitalisation rate at Limoges Teaching Hospital within the 90 days (primary outcome), 30 days and 72 h. The estimated cost-saving was also assessed.

RESULTS

252 patients were included. The mean age was 88.4 ± 5.8 years and the average baseline number of medications was 8.3 ± 3.4. In total, 158 pharmaceutical interventions were performed, reflecting an acceptance rate of 94.9%. We found a significant reduction in the rate of unplanned rehospitalisations at 90 days (OR = 0.45 (0.26-0.79) P = 0.005). These results were also consistent at 30 days (P = 0.035) and 72 h (P = 0.041). We found a cost-saving of €37770 related to 21 avoided rehospitalisations.

CONCLUSIONS

our results strongly emphasise the positive effects of clinical pharmacy services on the prevention of unplanned rehospitalisations of elderly patients admitted following a fall.

[Do clinical pharmacy activities have an impact on the re-hospitalization rate of elderly patients admitted in an Elderly Emergency Medicine (EMM) unit for fall?]

To evaluate the effect of clinical pharmacy interventions on the unplanned rehospitalizations rates of elderly people admitted for fall to the elderly emergency medicine (EEM) unit in a teaching hospital.

DESIGN AND MEASURES

This was a longitudinal, comparative pilot study. Patients aged at least 75 who were admitted to the EEM unit for a fall and who had at least two chronic diseases and who were being treated with two or more medications were included from February 1, 2018 to June 30, 2018 and followed by 90 days. The main outcomes were the unplanned rehospitalizations rate at Limoges Teaching Hospital within the 90 days (primary outcome), 30 days and 72 hrs. The estimated cost-saving was also assessed.

RESULTS

We included 252 patients. The mean age was 88.4 ± 5.8 years and the average baseline number of medications was 8.3 ± 3.4. In total, 158 pharmaceutical interventions were performed, reflecting an acceptance rate of 94.9%. We found a significant reduction of the rate of unplanned rehospitalizations at 90-day (OR = 0.45 (0.26-0.79) p = 0.005). These results were still consistent at 30-day (p = 0.035) and 72 hours (p = 0.041). We found a cost-saving of 37,770 euros related to 21 avoided rehospitalizations.

CONCLUSIONS

Our results highly emphasize the positive effects of clinical pharmacy services on the prevention of unplanned rehospitalizations of old adults admitted for fall.