Effect of electronic medication reconciliation at the time of hospital discharge on inappropriate medication use in the community: an interrupted time-series analysis.

BACKGROUND: It is unclear if enhanced electronic medication reconciliation systems can reduce inappropriate medication use and improve patient care. We evaluated trends in potentially inappropriate medication use after hospital discharge before and after adoption of an electronic medication reconciliation system. METHODS: We conducted an interrupted time-series analysis in 3 tertiary care hospitals in London, Ontario, using linked health care data (2011-2019). We included patients aged 66 years and older who were discharged from hospital. Starting between Apr. 13 and May 21, 2014, physicians were required to complete an electronic medication reconciliation module for each discharged patient. As a process outcome, we evaluated the proportion of patients who continued to receive a benzodiazepine, antipsychotic or gastric acid suppressant as an outpatient when these medications were first started during the hospital stay. The clinical outcome was a return to hospital within 90 days of discharge with a fall or fracture among patients who received a new benzodiazepine or antipsychotic during their hospital stay. We used segmented linear regression for the analysis. RESULTS: We identified 15 932 patients with a total of 18 405 hospital discharge episodes. Before the implementation of the electronic medication reconciliation system, 16.3% of patients received a prescription for a benzodiazepine, antipsychotic or gastric acid suppressant after their hospital stay. After implementation, there was a significant and immediate 7.0% absolute decline in this proportion (95% confidence interval [CI] 4.5% to 9.5%). Before implementation, 4.1% of discharged patients who newly received a benzodiazepine or antipsychotic returned to hospital with a fracture or fall within 90 days. After implementation, there was a significant and immediate 2.3% absolute decline in this outcome (95% CI 0.3% to 4.3%). INTERPRETATION: Implementation of an electronic medication reconciliation system in 3 tertiary care hospitals reduced potentially inappropriate medication use and associated adverse events when patients transitioned back to the community. Enhanced electronic medication reconciliation systems may allow other hospitals to improve patient safety.

Ensuring medication continuity in older people after hospital discharge.

Overview of: Tomlinson J, Cheong VL, Fylan B, et al Successful care transitions for older people: a systematic review and meta-analysis of the effects of interventions that support medication continuity. Age and Ageing 2020;49:558-69.

Impact of an integrated medication reconciliation model led by a hospital clinical pharmacist on the reduction of post-discharge unintentional discrepancies.

WHAT IS KNOWN AND OBJECTIVE: There is no optimal standardized model in the transfer of care between hospitals and primary healthcare facilities. Transfer of care is a critical point during which unintentional discrepancies, that can jeopardize pharmacotherapy outcomes, can occur. The objective was to determine the effect that an integrated medication reconciliation model has on the reduction of the number of post-discharge unintentional discrepancies. METHODS: A randomized controlled study was conducted on an elderly patient population. The intervention group of patients received a medication reconciliation model, led entirely by a hospital clinical pharmacist (medication reconciliation at admission, review and optimization of pharmacotherapy during hospitalization, patient education and counselling, medication reconciliation at discharge, medication reconciliation as part of primary health care in collaboration with a primary care physician and a community pharmacist). Unintentional discrepancies were identified by comparing the medications listed on the discharge summary with the first list of medications prescribed and issued at primary care level, immediately after discharge. The main outcome measures were incidence, type and potential severity of post-discharge unintentional discrepancies. RESULTS AND DISCUSSION: A total of 353 patients were analysed (182 in the intervention and 171 in the control group). The medication reconciliation model, led by a hospital clinical pharmacist, significantly reduced the number of patients with unintentional discrepancies by 57.1% (p < 0.001). The intervention reduced the number of patients with unintentional discrepancies associated with a potential moderate harm by 58.6% (p < 0.001) and those associated with a potential severe harm by 68.6% (p = 0.039). The most common discrepancies were incorrect dosage, drug omission and drug commission. Cardiovascular medications were most commonly involved in unintentional discrepancies. WHAT IS NEW AND CONCLUSION: The integrated medication reconciliation model, led by a hospital clinical pharmacist in collaboration with all health professionals involved in the patient's pharmacotherapy and treatment, significantly reduced unintentional discrepancies in the transfer of care.

Developing an Integrated Electronic Medication Reconciliation Platform and Evaluating its Effects on Preventing Potential Duplicated Medications and Reducing 30-Day Medication-Related Hospital Revisits for Inpatients.

The aims were to develop an integrated electronic medication reconciliation (ieMR) platform, evaluate its effects on preventing potential duplicated medications, analyze the distribution of the potential duplicated medications by the Anatomical Therapeutic and Chemical (ATC) code for all inpatients, and determine the rate of 30-day medication-related hospital revisits for a geriatric unit. The study was conducted in a tertiary medical center in Taiwan and involved a retrospective quasi pre-intervention (July 1-November 30, 2015) and post-intervention (October 1-December 31, 2016) study design. A multidisciplinary team developed the ieMR platform covering the process from admission to discharge. The ieMR platform included six modules of an enhanced computer physician order entry system (eCPOE), Pharmaceutical-care, Holistic Care, Bedside Display, Personalized Best Possible Medication Discharge Plan, and Pharmaceutical Care Registration System. The ieMR platform prevented the number of potential duplicated medications from pre (25,196 medications, 2.3%) to post (23,413 medications, 3.8%) phases (OR 1.71, 95% CI, 1.68-1.74; p < .001). The most common potential duplicated medications classified by the ATC codes were cardiovascular system (28.4%), alimentary tract and metabolism (26.4%), and nervous system (14.9%), and by chemical substances were sennoside (12.5%), amlodipine (7.5%), and alprazolam (7.4%). The rate of medication-related 30-day hospital revisits for the geriatric unit was significantly decreased in post-intervention compared with that in pre-intervention (OR = 0.12; 95% CI, 0.03-0.53; p < .01). This study indicated that the ieMR platform significantly prevented the number of potential duplicated medications for inpatients and reduced the rate of 30-day medication-related hospital revisits for the patients on the geriatric unit.

Impact of collaborative clinician visits on postdischarge total cost of care in a polypharmacy population.

PURPOSE: To evaluate the impact of a collaborative intervention by pharmacists and primary care clinicians on total cost of care, including costs of inpatient readmissions, emergency department visits, and outpatient care, at 30, 60, and 180 days after hospital discharge in a population of patients at high risk for readmission due to polypharmacy. METHODS: A retrospective study of cost outcomes in a cohort of adult patients discharged from a single institution from July 1, 2013 to March 25, 2016, was conducted. All patients had at least 10 medications listed on their discharge list, including at least 1 drug frequently associated with adverse events leading to hospital readmission. About half of the cohort (n = 496) attended a postdischarge visit involving both a pharmacist and a primary care clinician (a physician, physician assistant, or licensed nurse practitioner); this was designated the pharmacist/clinician collaborative (PCC) group. The remainder of the cohort (n = 500) attended a visit without pharmacist involvement; this was designated as the usual care (UC) group. Costs were compared using a quantile regression to assess the potential heterogeneous impacts of the PCC intervention across different parts of the cost distribution. All outcomes were adjusted for differences in baseline characteristics. RESULTS: At 30 days post index discharge, there was a significant decrease in total costs in the 10th and 90th cost quantiles in the PCC cohort vs the UC cohort, without a statistically significant decrease in the 25th, 50th or 75th quantiles. The difference was significant in the 75th and 90th quantiles at 60 days and in the 25th, 50th, and 75th quantiles at 180 days. There was a nonsignificant cost reduction in all other quantiles. CONCLUSION: Medically complex patients had a significantly lower total cost of care in approximately half of the adjusted cost quantiles at 30, 60, and 180 days after hospital discharge when they had a PCC visit. PCC visits can improve patient clinical outcomes while improving cost metrics.

Barriers and facilitators of medicines reconciliation at transitions of care in Ireland - a qualitative study.

BACKGROUND: Medication error at transitions of care is common. The implementation of medicines reconciliation processes to improve this issue has been recommended by many regulatory and safety organisations. The aim of this study was to gain insight from healthcare professionals on the barriers and facilitators to the medicines reconciliation implementation process. METHODS: Semi-structured interviews were conducted in Ireland with a wide range of healthcare professionals (HCPs) involved with medicines reconciliation at transitions of care. Thematic analysis was undertaken using an adaptation of a combined theoretical framework of Grol, Cabana and Sluisveld to classify the barriers and facilitators to implementation of medicines reconciliation. RESULTS: Thirty-five participants were interviewed, including eleven community pharmacists (CPs), eight hospital pharmacists (HPs), nine hospital consultants (HCs), five general practitioners (GPs), and two non-consultant hospital doctors (NCHDs). Themes were categorized into barriers and facilitators. Barriers included resistance from existing professional cultures, staff interest and training, poor communication and minimal information and communications technology (ICT) support. Solutions (facilitators) suggested included supporting effective multidisciplinary teams, greater involvement of pharmacists in medicines reconciliation, ICT solutions (linked prescribing databases, decision support systems) and increased funding to provide additional (e.g. admission and discharge reconciliation) and more advanced services (e.g. community pharmacist delivered medicines use review). CONCLUSIONS: Medicines reconciliation is advocated as a solution to the known problem of medication error at transitions of care. This study identifies the key challenges and potential solutions that policy makers, managers and HCPs should consider when reviewing the practices and processes of medicines reconciliation in their own organisations.

Applying the Medications at Transitions and Clinical Handoffs Toolkit in a Rural Primary Care Clinic: Implications for Nursing, Patients, and Caregivers.

BACKGROUND: Adequate medication reconciliation is related to patients' safety. Rural populations are at increased risk of adverse drug events due to errors in medication reconciliation and often receiving medical care across multiple health care entities and across long distances with separate electronic medical records. METHODS: This study examined the implementation of Medications at Transitions and Clinical Handoffs Toolkit (MATCH) in a rural primary care clinic and assessed the acceptability and feasibility of implementation. INTERVENTION: MATCH was developed as a workflow process intervention to improve medication reconciliation. RESULTS: Findings from MATCH implementation indicate that the process improved medication reconciliation workflow. A shared definition of current medications across providers and patients was essential. CONCLUSIONS: Empowering patients and caregivers with tools and language to work with providers, particularly nurses, to conduct medication reconciliation during primary care clinic visits is key to improving patient medication reconciliation in rural settings.

Implementation and Effect of a Pharmacist-to-Pharmacist Transitions of Care Initiative on Ambulatory Care Sensitive Conditions.

BACKGROUND: One of the most vulnerable times in a patient's encounter with a health care system is during transitions of care (TOC), defined by the Joint Commission as the movement of a patient from one health care provider or setting to another. The use of a clinical pharmacist as a member of the care transitions team has received focused attention and shown improved benefit. OBJECTIVE: To determine the effect of a large-scale pharmacist-to-pharmacist TOC model where inpatient clinical pharmacists identify patients during a hospital stay, provide evidence-based care and education, and then coordinate follow-up with an outpatient clinical pharmacist who provided comprehensive medication management (CMM) under a scope of practice. METHODS: This was a multisite, single health care system, quasi-experimental, matched interrupted time series design study conducted at an integrated Veterans Affairs (VA) health care system. Patients admitted with a primary or secondary diagnosis of diabetes, hypertension, chronic obstructive pulmonary disease (COPD) and heart failure (HF) were included for enrollment. Clinical pharmacists rounding on inpatient medical teams provided evidence-based recommendations to optimize medications while coordinating follow-up by an outpatient clinical pharmacy specialist within 10 days of discharge for CMM. The primary endpoint of this study was to determine the effect on the composite all-cause 30-day acute care utilization rate (emergency department [ED] visit or hospital readmission) for patients discharged with a primary or secondary diagnosis of diabetes, hypertension, COPD, and HF compared with a comparator group of patients with similar discharge diagnosis before implementation of the TOC program. RESULTS: 484 patients (242 in each group, with 366 heart failure, 66 COPD, 10 hypertension, and 42 diabetes) were included for analysis. For the primary outcome of composite 30-day, all-cause acute care utilization rates, no statistically significant difference was identified, with 26.9% of patients in the intervention group and 28.9% in the historical group readmitted or seen in the ED within 30 days of discharge (P = 0.6852). Outcomes for the HF index acute care utilization rate (i.e., admission for the same disease state discharged with), including 30-day index readmissions (P = 0.0014), 30-day index ED visits (P = 0.0047), and 90-day index readmissions for HF (P < 0.0001) were significantly reduced. CONCLUSIONS: Our study is one of the first to identify at-risk patients using rounding clinical pharmacists in the acute care arena and coordination of care systematically with a clinical pharmacy specialist practicing under a scope of practice targeted for CMM. Although the overall primary endpoint was not met, a reduction in acute care utilization rates for HF at 30 and 90 days can be achieved. DISCLOSURES: No outside funding supported this research. The authors report no conflicts of interest.

Evaluation of the effect of video tutorial training on improving pharmacy students' knowledge and skills about medication reconciliation

OBJECTIVES: This study aimed to describe the effect of using an innovative teaching strategy using a video tutorial on enhancing students' knowledge about medication reconciliation, and skills in identifying medication discrepancies. METHODS: This is a one group pre-post interventional study that was conducted at the School of Pharmacy at Applied Science Private University. Sixty pharmacy students were invited to attend an educational sessions that involve watching a 6-minutes video tutorial. The first two levels of the Kirkpatrick's Model were used to evaluate the effectiveness of this training tool. Level 1 (Reaction) was assessed using a satisfaction questionnaire, while level 2 (Learning) was assessed using two criteria: 1) student acquired knowledge about medication reconciliation using a questionnaire and a knowledge score out of 13 was calculated for each student, and 2) student acquired skills in identifying medication discrepancies using a virtual case scenario. If the student was able to identify any of the four impeded discrepancies he/she rewarded 1 point for each identified discrepancy, but if they identified any incorrect discrepancy they scored a negative point. RESULTS: Among the 60 students who registered to participate in the study, 49 attended the educational training (response rate 81.6%). The majority of them (n=44, 89.8%) were satisfied with the training process. Before the video tutorial, students showed an overall low knowledge score [4.08/13.0, SD 1.81], and low ability to identify discrepancies [0.72 identified discrepancies out of 4.0, SD 1.1]. Following the video tutorial, the overall knowledge score was improved (p < 0.001), and students were able to identify more discrepancies after watching the video (p < 0.001). CONCLUSION: In conclusion, video education has shown itself to be an effective method to educate pharmacy students. . This visualized method can be applied to other areas within pharmacy education. We encourage the integration of videos within the learning process to enhance students' learning experience and to support the traditional learning provided by the teaching staff

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Medication Reconciliation and Patient Safety in Trauma: Applicability of Existing Strategies.

The Joint Commission has established medication reconciliation as a National Patient Safety Goal, but it has not been studied much in trauma even though it is integral to safe patient care. This article reviews the existing medication reconciliation strategies and their applicability to the trauma setting. To perform medication reconciliation, hospitals use a variety of strategies including pharmacists or pharmacy technicians, electronic medical record tools, and patient-centered strategies. All of these strategies are limited in trauma. Subpopulations such as injured children, the elderly, and those with brain trauma are particularly challenging and are at risk for suboptimal care from inaccurate medication reconciliation. Further research is necessary to create a safe and efficient system for trauma patients.

Please reconcile, not wait a while.

A quality improvement project to increase the rate of paediatric medicines reconciliation was carried out in a district general hospital between April and July 2018. Baseline data collected from our paediatric ward shows that medicines reconciliation by doctors is only accurately completed 50% of the time. Evidence shows that medicines-related patient safety incidents are more likely when medicines reconciliation happens more than 24 hours after a person is admitted to an acute setting. The aim of this quality improvement project was therefore to ensure that 100% of paediatric patients have their regular medications prescribed by mid-day the day after admission. The paediatric pharmacy team reviewed all paediatric inpatient drug charts from Monday to Friday for 12 weeks. The number of regular medications and the number of medicines reconciled was recorded each day. The effectiveness of various interventions were reviewed using Plan-Do-Study-Act cycles. On average, 40 patients were reviewed each week. The mean reconciliation rate was 79%, and the worst rate was 0%. 100% reconciliation was achieved on 34 occasions and was achieved continuously for the last 3 weeks of data collection. A repeat audit carried out in September 2018 found the reconciliation rate was maintained at 100%. Multiple interventions occurred during this quality improvement project: teaching sessions for doctors, posters to raise awareness and questionnaires for parents/children to complete about their regular medications. The main factor for success in this project has been involving all members of the paediatric department including children and their parents.

Implementation of a closed-loop medication reconciliation process for ambulatory oncology patients at Winchester District Memorial Hospital.

Medication Reconciliation (MedRec) is a proven method of optimizing pharmacotherapy and decreasing incidence of Adverse Drug Events (ADEs); however, consistent and correct execution is often a challenge in the setting of outpatient oncology. Ambulatory chemotherapy patients are particularly susceptible to polypharmacy and ADEs and their medication management is often complicated due to gaps in communication between an increased volume of non-co-located, multidisciplinary, healthcare providers. Acknowledging these challenges, Winchester District Memorial Hospital (WDMH) led an initiative to create an ambulatory chemotherapy MedRec process using behavioural change approaches. Prior to the intervention, ambulatory chemotherapy MedRec at WDMH was conducted informally via an "open-loop" process. Through an iterative quality improvement process which involved understanding and communicating failure points in the transmission of patients' medication information directly with the frontline medical staff, a practical and sustainable "closed-loop" system evolved, which improved rates to 97.8% overall completion post-intervention.

La farmacia hospitalaria en tiempos de COVID-19 / Hospital pharmacy in COVID-19

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Impact of discharge medication bedside delivery service on hospital reutilization.

PURPOSE: To evaluate the impact of a medication to bedside delivery (meds-to-beds) service on hospital reutilization in an adult population. METHODS: A retrospective, single-center, observational cohort study was conducted within a regional academic medical center from January 2017 to July 2017. Adult patients discharged from an internal medicine unit with at least one maintenance medication were evaluated. The primary outcome was the incidence of 30-day hospital reutilization between two groups: discharged patients who received meds-to-beds versus those who did not. Additionally, the incidence of 30-day hospital reutilization between the two groups was compared within predefined subgroup patient populations: polypharmacy, high-risk medication use, and patients with a principal discharge diagnosis meeting the criteria set by the Centers for Medicare and Medicaid Services 30-day risk standardized readmission measures. RESULTS: A total of 600 patients were included in the study (300 patients in the meds-to-beds group and 300 patients in the control group). The 30-day hospital reutilization (emergency department visits and/or hospital readmissions) related to the index visit was lower in the meds-to-beds group, but the difference was not statistically significant between the two groups (8.0% in the meds-to-beds group versus 10.0% in the control group; odds ratio, 0.78; 95% confidence interval, 0.45-1.37). There was no significant difference in the 30-day hospital reutilization related to the index visit between the control and meds-to-beds groups within the three subgroups analyzed. CONCLUSION: There was no difference in 30-day hospital reutilization related to the index visit with the implementation of meds-to-beds service in the absence of other transitions-of-care interventions.

Organisational context of hospitals that participated in a multi-site mentored medication reconciliation quality improvement project (MARQUIS2): a cross-sectional observational study.

OBJECTIVES: Medication reconciliation (MedRec) is an important patient safety strategy and is widespread in US hospitals and globally. Nevertheless, high quality MedRec has been difficult to implement. As part of a larger study investigating MedRec interventions, we evaluated and compared organisational contextual factors and team cohesion by hospital characteristics and implementation team members' profession to better understand the environmental context and its correlates during a multi-site quality improvement (QI) initiative. DESIGN: We conducted a cross-sectional observational study using a web survey (contextual factors) and a national hospital database (hospital characteristics). SETTING: Hospitals participating in the second Multi-Centre Medication Reconciliation Quality Improvement Study (MARQUIS2). PARTICIPANTS: Implementation team members of 18 participating MARQUIS2 hospitals. OUTCOMES: Primary outcome: contextual factor ratings (ie, organisational capacity, leadership support, goal alignment, staff involvement, patient safety climate and team cohesion). Secondary outcome: differences in contextual factors by hospital characteristics. RESULTS: Fifty-five team members from the 18 participating hospitals completed the survey. Ratings of contextual factors differed significantly by domain (p<0.001), with organisational capacity scoring the lowest (mean=4.0 out of 7.0) and perceived team cohesion and goal alignment scoring the highest (mean~6.0 out of 7.0). No statistically significant differences were observed in contextual factors by hospital characteristics (p>0.05). Respondents in the pharmacy profession gave lower ratings of leadership support than did those in the nursing or other professions group (p=0.01). CONCLUSIONS: Hospital size, type and location did not drive differences in contextual factors, suggesting that tailoring MedRec QI implementation to hospital characteristics may not be necessary. Strong team cohesion suggests the use of interdisciplinary teams does not detract from cohesion when conducting mentored QI projects. Organisational leaders should particularly focus on supporting pharmacy services and addressing their concerns during MedRec QI initiatives. Future research should correlate contextual factors with implementation success to inform how best to prepare sites to implement complex QI interventions such as MedRec.

An environmental scan of medication history technician programs within the Veterans Health Administration.

PURPOSE: Results of a study to identify medication history technician (MHT) programs within the Veterans Health Administration (VHA) and to evaluate the personnel, structure, and scope of such programs are reported. METHODS: Specially trained pharmacy technicians can take accurate patient medication histories and contribute to the medication reconciliation process. An environmental scan of MHT programs within VHA was conducted via an email query of pharmacy personnel. Semistructured interviews of personnel at each responding site (an MHT, a pharmacist, or both) were conducted. RESULTS: Ten VHA sites had existing MHT programs; the earliest was initiated in 2010. Sites employed from 1 to 4 MHTs, who most commonly worked in the inpatient setting (7 sites). At most sites (9), MHTs obtained a "best possible medication history" through systematic collection of medication information using 2 reliable sources, such as patients, caregivers, and medical records. Survey respondents at all sites reported benefits of MHT programs, including dedicated time to obtain medication histories, allowing for more effective use of pharmacists' time. Six sites were eager to increase the reach of their programs. MHT training, oversight, and quality assurance varied across the sites. The survey results indicated that there are opportunities nationally-within and outside VHA-to develop standardized training, competency assessments, and quality assurance measures for MHT programs. CONCLUSION: Ten VHA sites with MHT programs were identified. MHTs most commonly worked in inpatient settings as part of admission medication reconciliation processes.

Impacto de un programa de intervención destinado a la mejora de la prescripción potencialmente inapropiada en pacientes ancianos hospitalizados / Impact of an intervention program to improve potentially inappropriate prescription in hospitalized elderly patients

Introducción y objetivos: La prescripción potencialmente inapropiada (PPI) es frecuente en ancianos. Se ha convertido en un problema de salud pública mundial por su relación con efectos adversos a medicamentos (EAM), aumento de la morbimortalidad, visitas a urgencias y consumo de recursos. El objetivo principal de este estudio fue determinar si el uso de un programa de notificación de PPI en pacientes ancianos hospitalizados condujo a una reducción en su prescripción. Método: Se realizó un estudio quasi-experimental pre-post. La identificación de las PPI se llevó a cabo según los criterios de Beers (actualización 2012) y STOPP-START (versión 2008). Se elaboró un informe individualizado sobre PPI y se evaluó el efecto de esta intervención. Resultados: Se incluyeron 174 pacientes con 284 PPI. Se aceptaron el 54% (153) de las recomendaciones. La única variable que demostró contribuir a la presencia de modificaciones en la PPI fue el índice de Barthel. Los pacientes a los que se les modificó la PPI se caracterizaron por ser significativamente más dependientes (p=0,005), presentar deterioro cognitivo (p=0,001) y encontrarse más institucionalizados (p=0,039) que aquellos a los que no se les realizó ninguna modificación. Se produjeron menos reingresos, visitas a urgencias y menor mortalidad al comparar los pacientes con y sin modificaciones de PPI, pero sin diferencias significativas. Se identificaron 32 EAM, 29 relacionados con fármacos inapropiados. Los EAM se asociaron con PPI respecto a otros fármacos de manera significativa (p<0,001), odds ratio 242,5 (IC 95%: 56,9-1.023,6). Conclusiones: La revisión de la medicación en pacientes de edad avanzada, junto con el uso de herramientas que ayudan en la identificación de fármacos inapropiados, conlleva una reducción de la PPI y contribuye de manera significativa a la mejora continua de la medicación crónica en los ancianos

Introduction and objectives: Potentially inappropriate prescription (PIP) is common in elderly people. It has become a global public health problem due to its association with adverse drug effects (ADE), increased morbidity and mortality, emergency care visits and resource use. The main aim of this study was to determine whether the use of a notification program of PIP in elderly patients admitted in the hospital led to a reduction of their prescription. Method: A quasi-experimental before-after study was conducted. PIP were identified by using Beers (2012 update) and STOPP-START criteria (2008 version). An individualized report on PPI was prepared and the effect of this intervention was evaluated. Results: 174 patients were included who presented 284 PIP. 54% (153) of the recommendations were accepted. Barthel index was the only variable that proved to contribute to the presence of PIP modifications. The patients whose PIP drugs were modified were significantly more dependent (p=0.005), presented cognitive impairment (p=0.001) and were more institutionalized (p=0.039) than those without any modifications. There were fewer readmissions, emergency care visits and mortality within six months after intervention comparing patients with and without PIP modifications, but without significant differences. 32 ADE were detected, 29 related with PIP drugs. Adverse events were significantly associated with PIP drugs, versus other medications (p<0.001), odds ratio 242.5 (CI95%: 56.9-1023.6). Conclusions: Review of medication in elderly patients, along with the use of tools that help in the identification of dangerous drugs, entail a reduction of inadequate prescription and significantly contribute to the continuous improvement of chronic medication in elders