Pro Re Nata Drug Use in Nursing Home Residents: A Systematic Review

Longitudinal cohort study of discrepancies between prescribed and administered polypharmacy rates: implications for National Aged Care Quality Indicator Programs

BACKGROUND

Polypharmacy is frequently used as a quality indicator for older adults in Residential Aged Care Facilities (RACFs) and is measured using a range of definitions. The impact of data source choice on polypharmacy rates and the implications for monitoring and benchmarking remain unclear. We aimed to determine polypharmacy rates (≥9 concurrent medicines) by using prescribed and administered data under various scenarios, leveraging electronic data from 30 RACFs.

METHOD

A longitudinal cohort study of 5662 residents in New South Wales, Australia. Both prescribed and administered polypharmacy rates were calculated biweekly from January 2019 to September 2022, providing 156 assessment times. 12 different polypharmacy rates were computed separately using prescribing and administration data and incorporating different combinations of items: medicines and non-medicinal products, any medicines and regular medicines across four scenarios: no, 1-week, 2-week and 4-week look-back periods. Generalised estimating equation models were employed to identify predictors of discrepancies between prescribed and administered polypharmacy.

RESULTS

Polypharmacy rates among residents ranged from 33.9% using data on administered regular medicines with no look-back period to 63.5% using prescribed medicines and non-medicinal products with a 4-week look-back period. At each assessment time, the differences between prescribed and administered polypharmacy rates were consistently more than 10.0%, 4.5%, 3.5% and 3.0%, respectively, with no, 1-week, 2-week and 4-week look-back periods. Diabetic residents faced over two times the likelihood of polypharmacy discrepancies compared with counterparts, while dementia residents consistently showed reduced likelihood across all analyses.

CONCLUSION

We found notable discrepancies between polypharmacy rates for prescribed and administered medicines. We recommend a review of the guidance for calculating and interpreting polypharmacy for national quality indicator programmes to ensure consistent measurement and meaningful reporting.

Use of electronic health record data to examine administrations of pro re nata analgesics during hip fracture post-acute care

PURPOSE

Medications prescribed to older adults in US skilled nursing facilities (SNF) and administrations of pro re nata (PRN) "as needed" medications are unobservable in Medicare insurance claims. There is an ongoing deficit in our understanding of medication use during post-acute care. Using SNF electronic health record (EHR) datasets, including medication orders and barcode medication administration records, we described patterns of PRN analgesic prescribing and administrations among SNF residents with hip fracture.

METHODS

Eligible participants resided in SNFs owned by 11 chains, had a diagnosis of hip fracture between January 1, 2018 to August 2, 2021, and received at least one administration of an analgesic medication in the 100 days after the hip fracture. We described the scheduling of analgesics, the proportion of available PRN doses administered, and the proportion of days with at least one PRN analgesic administration.

RESULTS

Among 24 038 residents, 57.3% had orders for PRN acetaminophen, 67.4% PRN opioids, 4.2% PRN non-steroidal anti-inflammatory drugs, and 18.6% PRN combination products. The median proportion of available PRN doses administered per drug was 3%-50% and the median proportion of days where one or more doses of an ordered PRN analgesic was administered was 25%-75%. Results differed by analgesic class and the number of administrations ordered per day.

CONCLUSIONS

EHRs can be leveraged to ascertain precise analgesic exposures during SNF stays. Future pharmacoepidemiology studies should consider linking SNF EHRs to insurance claims to construct a longitudinal history of medication use and healthcare utilization prior to and during episodes of SNF care.

Identifying Residents Who May Benefit from an Analgesic Review: Applying Analgesic Indicators in Residential Aged Care Services

BACKGROUND

Ensuring safe and effective analgesic use in residential aged care services is important because older adults are susceptible to analgesic-related adverse drug events (ADEs).

OBJECTIVE

The aim of this study was to identify the proportion and characteristics of residents of aged care services who may benefit from analgesic review based on indicators in the 2021 Society for Post-Acute and Long-Term Care Medicine (AMDA) Pain Management Guideline.

METHODS

Cross-sectional analyses of baseline data from the Frailty in Residential Sector over Time (FIRST) study (N = 550 residents) across 12 South Australian residential aged care services in 2019 were conducted. Indicators included the proportion of residents who received > 3000 mg/day of acetaminophen (paracetamol), regular opioids without a documented clinical rationale, opioid doses > 60 mg morphine equivalents (MME)/day, more than one long-acting opioid concurrently, and a pro re nata (PRN) opioid on more than two occasions in the previous 7 days. Logistic regression was performed to investigate factors associated with residents who may benefit from analgesic review.

RESULTS

Of 381 (69.3%) residents charted regular acetaminophen, 176 (46.2%) were charted > 3000 mg/day. Of 165 (30%) residents charted regular opioids, only 2 (1.2%) had no prespecified potentially painful conditions in their medical record and 31 (18.8%) received > 60 MME/day. Of 153 (27.8%) residents charted long-acting opioids, 8 (5.2%) received more than one long-acting opioid concurrently. Of 212 (38.5%) residents charted PRN opioids, 10 (4.7%) received more than two administrations in the previous 7 days. Overall, 196 (35.6%) of 550 residents were identified as potentially benefiting from analgesic review. Females (odds ratio [OR] 1.87, 95% confidence interval [CI] 1.20-2.91) and residents with prior fracture (OR 1.62, 95% CI 1.12-2.33) were more likely to be identified. Observed pain (OR 0.50, 95% CI 0.29-0.88) was associated with a lower likelihood of being identified compared with residents with no observed pain. Overall, 43 (7.8%) residents were identified based on opioid-related indicators.

CONCLUSIONS

Up to one in three residents may benefit from a review of their analgesic regimen, including 1 in 13 who may benefit from a specific review of their opioid regimen. Analgesic indicators represent a new approach to target analgesic stewardship interventions.

Potentially Inappropriate Medication Use among Nursing Home Residents: Medication Errors Associated with Pro re nata Medications and the Importance of Pill Burden

Background

The use of potentially inappropriate medications (PIM) has become more common among nursing home residents (NHR). This study focused on drugs initially prescribed as pro re nata (PRN) medications and pill burden in association with PIM among NHR.

Methods

This observational cross-sectional study was conducted between March and April 2019 on 225 adult NHR aged ≥60 years.

Results

The prevalence of PIM was 47.6% among NHR according to the Screening Tool of Older Persons' Prescriptions (STOPP) criteria version 2. The most frequent PIM was the use of any drug prescribed without evidence-based clinical indication; most medication errors were associated with PRN medications. The prevalence rates of PRN in non-PIM and PIM users were 12% and 62.4%, respectively. PRN medications that most commonly caused PIM were non-steroidal anti-inflammatory drugs and proton pump inhibitors. The cut-off value for both medications and pills to correctly identify participants with PIM was 5.5. Pill burden had a similar sensitivity to polypharmacy in identifying individuals with PIM.

Conclusion

Medication errors associated with PRN medications were overlooked as factors that increased the risk of PIMs. The most common error related to PRN medications was the continued daily use despite symptom resolution.

Practical Considerations of PRN Medicines Management: An Integrative Systematic Review

Background and objectives: Highly widespread use of pro re nata (PRN) medicines in various healthcare settings is a potential area for improper medication prescription and administration leading to patient harm. This study aimed to summarize and integrate the findings of all relevant individual studies regarding the practical considerations of PRN medicines management including strategies and interventions by healthcare professionals for safe prescription, dispensing, administration, monitoring, and deprescription of PRN medicines in healthcare settings. Methods: An integrative systematic review on international databases were performed. Electronic databases including Web of Knowledge, Scopus, PubMed (including MEDLINE), and Cinahl were searched to retrieve articles published until end of May 2021. Original qualitative, quantitative, and mixed methods studies written in English were included with a focus on PRN medicines management in healthcare settings. Research synthesis using the narrative method was performed to summarise the results of included studies. Results: Thirty-one studies on PRN medicines in healthcare settings by different healthcare providers were included after the screening of the databases based on eligibility criteria. They were published from 1987 to 2021. The majority of studies were from Australia, the United States, Canada, and the United Kingdom and were conducted in psychiatric settings. Given variations in their purposes, methods, and outcomes, the research synthesis was conducted narratively based on diversities and similarities in findings. Eight categories were developed by the authors as follows: "PRN indications and precautionary measures," "requirements of PRN prescription," "interventions for PRN administration," "monitoring and follow up interventions," "deprescription strategies," "healthcare professionals' role," "participation of patients and families," and "multidisciplinary collaboration." Each category consists of several items and describes what factors should be considered by healthcare professionals for PRN medicines management. Conclusion: The review findings provide insights on the practical considerations of PRN medicines management in clinical practice. The suggested list of considerations in our review can be used by healthcare professionals for optimal PRN medicines management and safeguarding patient care.

A systematic review of opioid prevalence in Australian residential aged care facilities

OBJECTIVE

To systematically review the prevalence of opioid prescribing, dispensing and administration in Australian residential aged care facilities (RACFs).

METHODS

MEDLINE, Embase, CINAHL, AgeLine, Web of Science Core Collection, InformIT and International Pharmaceutical Abstracts (inception to September 2021) were searched for studies reporting opioid prevalence in Australian RACFs. Regular and as-required (i.e. pro re nata, PRN) opioid uses were considered. Screening, data extraction and quality assessment were performed independently by two review authors.

RESULTS

Twenty-three studies (n = 286,141 residents) reported opioid prevalence, of which 16 provided overall regular or PRN prescribing, dispensing or administration data. Five studies reported 28%-34% of residents were prescribed regular opioids over assessment periods ranging from one week to one month. Five studies reported 11%-42% of residents were prescribed PRN opioids over assessment periods ranging from one week to 30 months. Three studies reported 27%-50% of residents were dispensed an opioid over 12 months. Five studies reported 21%-29% were administered both regular and PRN opioids over 24 hours. Two studies reported 22%-42% of residents were administered PRN opioids over 1 week to 12 months. Two studies reported 6%-13% of residents were using doses >100 mg oral morphine equivalents/day.

CONCLUSIONS

Up to half of the residents were dispensed opioids over 12 months. The prevalence of opioid prescribing, dispensing and administration was highly variable, suggesting the potential value of opioid quality indicators and analgesic stewardship interventions to ensure opioid appropriateness.

As-Needed Prescribing and Administration of Psychotropic Medications in Assisted Living: A 7-State Study

OBJECTIVES

Psychotropic medications administered on an as-needed basis, often designated as pro re nata (or PRN, hereafter as-needed), can alleviate acute symptoms and facilitate deprescribing, although as-needed use is associated with negative outcomes such as polypharmacy and drug interactions. The aim of this study was to examine the extent to which PRN psychotropic medications are prescribed and administered to assisted living (AL) residents, overall and in relation to resident- and community-level characteristics.

DESIGN

Cross-sectional study.

SETTING AND PARTICIPANTS

All AL residents and select staff in 250 AL communities in 7 states.

METHODS

Data regarding prescribing and administration of 5 types of PRN psychotropic medications in the prior 7 days (antipsychotics, mood stabilizers and antiepileptics, antidepressants, anxiolytics/hypnotics, and cognitive enhancers) were abstracted and compared across resident and community characteristics.

RESULTS

Prescribing of PRN psychotropics in AL is low (10.3%). Of prescribed PRN medications, 2.5% of residents were administered a PRN and 8% had PRN that was not administered in the previous 7 days. Anxiolytics were administered PRN more commonly compared with antipsychotics (2.0% vs 0.2%). Of all PRN psychotropic prescriptions (n = 1039), 70.5% had a written indication describing the reason for administration. Among PRN medications administered (n = 242), the proportion with an indication was lower (62.0%). PRN psychotropic medication prescribing was higher among residents with dementia and a psychiatric diagnosis, and in larger AL communities and those with a higher proportion of dementia care beds.

CONCLUSIONS AND IMPLICATIONS

The prescribing and administration of PRN psychotropic medications in AL is relatively rare, although more common among residents with dementia. Emerging psychotropic medication policies should be expanded to address mental health care, anxiolytic/hypnotic use for residents living with dementia, PRN prescribing in chart review, and the use of detailed indications for PRN use, especially when medications are administered by unlicensed care staff.

Factors influencing prescription and administration of analgesic medication: A longitudinal study of people with dementia living in care homes

OBJECTIVES

To (1) describe the prescription and administration of regular and 'as required' (pro re nata [PRN]) analgesics in English care homes, (2) investigate individual and care home factors associated with analgesic use.

METHODS

We collected data (2014-2016) at 0-, 4-, and 12-months nested in a longitudinal cohort study of 86 English care homes about residents with diagnosed or probable dementia. We describe analgesics prescribed as regular or PRN medication, by class, and PRN administration. We explored individual differences (sociodemographic; dementia severity [Clinical Dementia Rating]), and care home differences (type; ownership; number of beds; dementia-registered/specialist; Care Quality Commission rating) in prescription and administration using multilevel regression models.

RESULTS

Data were available for 1483 residents. At baseline, 967 residents (67.9%) were prescribed analgesics: 426 residents (28.7%) prescribed regular analgesics and 670 (45.2%) prescribed PRN. Paracetamol was the most prescribed analgesic (56.7%), with PRN prescriptions more common than regular (39.7% vs. 16.6%). Across all study visits, 344 residents (mean = 41.9%) with a PRN prescription did not receive any analgesic in the 2 weeks prior to data collection. Male residents and those with severe dementia received fewer analgesics. Care homes differences in PRN administration were not explained by the modelled variables.

CONCLUSIONS

Pain management in English care homes largely relies on PRN paracetamol that is frequently prescribed but infrequently administered. Care homes differ in how often they administer PRN analgesics. Some care home residents particularly those with more severe dementia are likely to have untreated pain.

Use of psychotropic drugs and drugs with anticholinergic properties among residents with dementia in intermediate care facilities for older adults in Japan: a cohort study

OBJECTIVES

To evaluate the prescription and discontinuation of psychotropic drugs (PD) and drugs with anticholinergic properties (DAP) in residents with dementia admitted to Roken, a major type of long-term care facility in Japan.

DESIGN

Cohort study.

SETTING

A nationwide questionnaire survey across 3598 Roken in Japan in 2015 (up to five randomly selected residents per facility).

PARTICIPANTS

This study included 1201 residents from 343 Roken (response rate: 10%). We determined the presence and severity of dementia using a nationally standardised measure.

PRIMARY AND SECONDARY OUTCOME MEASURES

Prescriptions of PD and DAP at admission and 2 months after admission were evaluated. Multivariable logistic regression was used to evaluate the associations of residents' baseline characteristics with prescriptions or discontinuation.

RESULTS

Prescription rates decreased for antidementia drugs (19.4% to 13.0%), hypnotics (25.1% to 22.6%) and anxiolytics (12.3% to 10.7%), whereas those for other PD, such as antipsychotics (13.2% to 13.6%), antidepressants (7.4% to 6.7%), antiepileptic drugs (7.1% to 7.8%) and DAP (35.2% to 36.6%) did not statistically significantly decrease. Some factors were associated with the prescriptions, for example, for antipsychotics, older age (≥85 years) (adjusted OR (aOR), 0.60; 95% CI 0.43 to 0.85) and being bedridden (aOR 0.67; 95% CI 0.47 to 0.97) were associated with a lower use of antipsychotics, whereas severe dementia was associated with a higher use of antipsychotics (aOR 3.26; 95% CI 2.26 to 4.70). At an individual level, a quarter of residents prescribed PD or DAP at admission had discontinued at least one PD or DAP, respectively, 2 months after admission. Antidementia drug use in severe dementia (aOR 1.86; 95% CI 1.04 to 3.31) and PD use in older age (aOR 1.61; 95% CI 1.00 to 2.60; in residents with disabling dementia) were associated with discontinuation.

CONCLUSIONS

There is possible scope for deprescribing PD and DAP in Roken residents with dementia to mitigate the risks of adverse events.

Trajectories of pro re nata (PRN) medication prescribing and administration in long-term care facilities

BACKGROUND

Little is known about changes in pro re nata (PRN) medication prescribing and administration in residential aged care facilities (RACFs) over time.

OBJECTIVE

To determine the prevalence and factors associated with PRN medication administration in RACFs and examine changes over 12-months.

METHODS

Secondary analyses utilizing data from the SIMPLER randomized controlled trial (n = 242 residents, 8 RACFs) was undertaken. PRN medication data were extracted from RACF medication charts. Factors associated with PRN medication administration in the preceding week were explored using multivariable logistic regression.

RESULTS

At baseline, 211 residents (87.2%) were prescribed ≥1 PRN medication, with 77 (36.5%) administered PRN medication in the preceding week. PRN administration was more likely in non-metropolitan areas, and less likely among residents with more severe dementia symptoms and greater dependence with activities of daily living. No significant differences in overall PRN prescribing or administration in 162 residents alive at 12-month follow-up were observed.

CONCLUSIONS

Despite being frequently prescribed, the contribution of PRNs to overall medication use in RACFs is small. PRN prescribing and administration was relatively static over 12-months despite likely changes in resident health status over this period, suggesting further exploration of PRN prescribing in relation to resident care needs may be warranted.

PRN Medicines Optimization and Nurse Education

Medicines management is a high-risk and error prone process in healthcare settings, where nurses play an important role to preserve patient safety. In order to create a safe healthcare environment, nurses should recognize challenges that they face in this process, understand factors leading to medication errors, identify errors and systematically address them to prevent their future occurrence. ''Pro re nata'' (PRN, as needed) medicine administration is a relatively neglected area of medicines management in nursing practice, yet has a high potential for medication errors. Currently, the international literature indicates a lack of knowledge of both the competencies required for PRN medicines management and the optimum educational strategies to prepare students for PRN medicines management. To address this deficiency in the literature, the authors have presented a discussion on nurses' roles in medication safety and the significance and purpose of PRN medications, and suggest a model for preparing nursing students in safe PRN medicines management. The discussion takes into account patient participation and nurse competencies required to safeguard PRN medication practice, providing a background for further research on how to improve the safety of PRN medicines management in clinical practice.

First Do No Harm: Psychotropic Prescribing Principles and Guidelines for Older Adults

The drive to prescribe to alleviate symptoms and ease suffering is prevalent in health care. In psychiatry, it is no different. Although monotherapy remains the preferred approach to treating psychiatric disorders, especially when combined with nonpharmacological approaches, in practice, a focus on remission of symptoms over patient preferences and quality of life can result in higher doses than necessary and polypharmacy from the addition of drugs for augmentation or treatment of adverse effects. This is especially concerning for older adults who are likely to have comorbid medical disorders, eventually leading to prescribing cascades as different providers address different symptoms. Whereas we generally look to best practice guidelines to treat identified disorders, the approach to treating older adults with multimorbidities requires collaboration among the patient, the family (if appropriate), and the provider to re-evaluate goals based on the patient's priorities, and to examine tradeoffs, reduce medication overload, and simplify care. Fortunately, many resources are available to help the clinician in this process. [Journal of Psychosocial Nursing and Mental Health Services, 58(8), 12-16.].

Rates of PRN Medication Administration in Australian Residential Aged Care

OBJECTIVE

To investigate administration of pro re nata (PRN) medications and nurse-initiated medications (NIMs) in Australian aged care services over a 12-month period.

DESIGN

Twelve-month longitudinal audit of medication administrations.

SETTING AND PARTICIPANTS

Three hundred ninety-two residents of 10 aged care services in regional Victoria, Australia.

METHODS

Records of PRN and NIM administration were extracted from electronic and hard copy medication charts. Descriptive statistics were used to calculate medication administration per person-month. Poisson regression was used to estimate predictors of PRN administration.

RESULTS

Over a median follow-up of 12 months (interquartile range 10-12 months), 93% of residents were administered a PRN medication and 41% of residents an NIM on 21,147 and 552 occasions, respectively. The mean number of any PRN administration was 5.85 per person-month. The most frequently administered PRN medications per person-month were opioids 1.54, laxatives 0.96, benzodiazepines 0.72, antipsychotics 0.48, paracetamol 0.46, and topical preparations 0.42. Three-quarters of residents prescribed a PRN opioid or PRN benzodiazepine and two-thirds of residents prescribed a PRN antipsychotic had the medication administered on 1 or more occasions over the follow-up.

CONCLUSIONS AND IMPLICATIONS

Most residents were administered PRN medications. Administration was in line with Australian regulations and institutional protocols. However, the high frequency of PRN analgesic, laxative, and psychotropic medication administration highlights the need for regular clinical review to ensure ongoing safe and appropriate use.

PRN Medicines Management for Psychotropic Medicines in Long-Term Care Settings: A Systematic Review

Many medications are prescribed and administered PRN (pro re nata, as needed). However, there are few integrative reviews to inform PRN psychotropic medication use in long-term care facilities and nursing or care homes. Accordingly, this integrative systematic review aimed to improve our understanding of PRN medicines management with a focus on psychotropic medications (antipsychotics, sedatives, anxiolytics, and hypnotics) in long-term care settings. Keywords relating to PRN in English, Norwegian, and Spanish were used, and articles published between 2009 and 2019 were retrieved. Based on the inclusion criteria, eight articles were used for data analysis and synthesis. This review offers a description of PRN prescription and administration of psychotropic medications in long-term care. Variations were observed in the management of PRN psychotropic medications based on residents’ underlying health conditions and needs, duration of use, and changes between medications and doses. Neither the reasons for PRN prescription and administration nor the steps taken to identify and manage any associated adverse reactions or adverse drug events were reported. Further initiatives are needed to improve PRN medicines management to explore factors that affect PRN prescription and administration and to develop appropriate PRN guidelines to prevent harm and improve the safety of people living in long-term care facilities.