The overall aim of this thesis was to evaluate clinical pharmacist interventions with the focus on methods aiming to improve the quality of drug therapy and increase patient safety. Adverse drug events caused by medication errors, suboptimal dosages and inappropriate prescribing are common causes of drug-related morbidity and mortality. Clinical pharmacists integrated in multi-professional health-care teams are increasingly addressing these issues. A randomised controlled trial (RCT) was conducted to investigate the effectiveness of clinical pharmacists’ interventions in reducing morbidity and use of hospital care for patients 80 years or older. The results showed that the intervention group had fewer visits to hospital and that the intervention was cost-effective. In a subsequent study based on the population in the RCT, the appropriateness of prescribing was assessed using three validated tools. The results indicated improved appropriateness of prescribing for the intervention group as a result of the intervention. The tools and the number of drugs at discharge were then tested for validity in terms of causal links between the scores at discharge and hospitalisation. No clear correlations between high scores for the tools or a high number of drugs and increased risk of hospitalisation could be detected. During the inclusion period of the RCT a survey based study was conducted where the perceived value of ward-based clinical pharmacists, from the perspective of hospital-based physicians and nurses as well as from general practitioners (GPs) was evaluated. The respondents were positive to the new collaboration to a high degree and stated increased patient safety and improvements in patients’ drug therapy as the main advantages. In the last study the frequency and severity of prescription and transcription errors, when patients enrolled in the multidose-dispensed medications (MDD) system are discharged from hospital, was investigated. The results showed that errors frequently occur when MDD patients are hospitalised.

Older people admitted to hospital are at high risk of rehospitalization and medication errors. We have demonstrated, in a randomized controlled trial, that a clinical pharmacist intervention reduces the incidence of revisits to hospital for patients aged 80 years or older admitted to an acute internal medicine ward. The aims of this thesis were to further study the effects of the intervention and to investigate possibilities of targeting the intervention by identifying predictors of treatment response or adverse health outcomes. The effect of the pharmacist intervention on the appropriateness of prescribing was assessed, by using three validated tools. This study showed that the quality of prescribing was improved for the patients in the intervention group but not for those in the control group. However, no association between the appropriateness of prescribing at discharge and revisits to hospital was observed. Subgroup analyses explored whether the clinical pharmacist intervention was equally effective in preventing emergency department visits in patients with few or many prescribed drugs and in those with different levels of inappropriate prescribing on admission. The intervention appeared to be most effective in patients taking fewer drugs, but the treatment effect was not altered by appropriateness of prescribing. The most relevant risk factors for rehospitalization and mortality were identified for the same study population, and a score for risk-estimation was constructed and internally validated (the 80+ score). Seven variables were selected. Impaired renal function, pulmonary disease, malignant disease, living in a nursing home, being prescribed an opioid and being prescribed a drug for peptic ulcer or gastroesophageal reflux disease were associated with an increased risk, while being prescribed an antidepressant drug (tricyclic antidepressants not included) was linked with a lower risk. These variables made up the components of the 80+ score. Pending external validation, this score has potential to aid identification of high-risk patients. The last study investigated the occurrence of prescription errors when patients with multi-dose dispensed (MDD) drugs were discharged from hospital. Twenty-five percent of the MDD orders contained at least one medication prescription error. Almost half of the errors were of moderate or major severity, with potential to cause increased health-care utilization.

Abstract [en] Title: Discrepancies in medication lists at hospital wards identified by medication reconciliation Authors: Anderberg M. Institute: Uppsala University, Uppsala, Sweden Background and objective: An accurate medication list is essential for a correct assessment of a patient´s condition at hospitals. Previous studies have shown that patients in emergency departments often are affected by discrepancies in medication lists at hospital admission. Less research has been done regarding discrepancies after transferring patients to medical wards. The aim of this study was to identify discrepancies in the electronic medical record in hospital wards for patients admitted via the emergency department. Design: Observational study. Medication reconciliation was performed by a pharmacist shortly after the arrival of patients from the emergency department. This included a patient interview and the investigation of the patient’s medical record. The discrepancies identified at the wards were classified as either omitted drug, wrong dose, additional drug, incorrect frequency or duplicate therapy. Descriptive statistics were used and the proportion of medication lists with at least one discrepancy was presented with 95 % confidence interval. Setting: Three medical wards at Capio S:t Görans Hospital in Stockholm.  Main outcome measures: The proportion of medication lists with at least one discrepancy. The mean value of discrepancies among all patients. Classification and categorization of discrepancies regarding type and ATC index.  Results: In total, 63 patients were included with a mean age of 63 years. At least one discrepancy was identified in 43 % (95 % CI 31-55) of the medication lists. 52 discrepancies were found in total generating a mean value of 0,83 ± 1,17 discrepancies per medication list. The two most common categories were Omitted drug(33%) and Wrong dose(33%). The most frequent drug class associated with medication discrepancies was Drugs for obstructive airway diseases.  Conclusion: 43 % of the patients had at least one discrepancy in the medication list. This indicates the importance of medication reconciliations at medical wards even though the medication list has been updated at the emergency department.

<p>  </p> <p>Polypharmacy in older adults presents several challenges, such as suboptimal therapeutic outcomes and increased adverse effects. Deprescribing, a clinically supervised process of decreasing dosage or stopping the medication when risks outweigh benefits, has emerged as one possible solution to these problems. However, the literature describing deprescribing intervention frameworks is heterogenous regarding targeted medications to deprescribe, population characteristics, clinical settings, and measured outcomes. This dissertation utilizes Linsky et al.'s deprescribing conceptual model, which details factors influencing decisions regarding initiating deprescribing interventions and their direct impact on the process. </p> <p>This dissertation utilizes a multimethod approach to investigate factors that facilitate and improve the deprescribing of anticholinergic medications for older adults, addressing gaps in this population's anticholinergic medication use. The three studies included in this dissertation provide a comprehensive understanding of deprescribing anticholinergic medications for this population, each contributing unique insights and results. </p> <p>The first study explores the feasibility of in-person and remote Home Medication Inventory Method (HMIM) approaches to evaluate over-the-counter (OTC) and prescription medication possession and use, including anticholinergics. Results demonstrate that both methods can accurately assess anticholinergic medication usage patterns, providing healthcare providers with reproducible methods and detailed medication profiles to make informed deprescribing decisions based on complete medication lists.</p> <p>The second study examined the intertwined roles of social determinants of health and health beliefs in predicting older adults' self-reported deprescribing behaviors, proposing the Deprescribing Health Belief Model (DeRx-HBM) framework that can be utilized for these efforts. These results emphasize the importance of considering these elements when creating a patient-centric and culturally sensitive intervention since they significantly shape deprescribing behaviors.</p> <p>In the third study, we explored the use of a symptom-specific scale for measuring the symptom burden in older adults during the deprescribing of anticholinergic medications prescribed for urinary incontinence, depression, and pain management. This research introduces a validated scale for assessing anticholinergic symptom burden prior to, throughout, and following the deprescribing attempt. The implementation of this scale has the potential to enhance the reproducibility and standardization of deprescribing decisions. Furthermore, it can improve communication between healthcare professionals and patients, as well as monitor the effectiveness of interventions during and after the deprescribing process.</p> <p>Collectively, these studies provide invaluable insights into factors influencing deprescribing decisions, obstacles to implementing deprescribing practices, and potential strategies to optimize medication management in older adults. The major takeaway from these studies is that addressing these factors leads to more informed decisions among healthcare professionals and patients - potentially leading to improved patient outcomes, ensure the ongoing effectiveness of deprescribing initiatives among older adults, and the promotion of health equity throughout the deprescribing process.</p>

La transition du patient entre les secteurs de soins est une période à haut risque de discontinuité de la prise en charge médicamenteuse. Les problèmes liés aux médicaments spécifiquement rencontrés résultent principalement de différences non expliquées entre les traitements médicamenteux documentés aux niveaux des différents sites de soins et/ou des différents professionnels de la santé, également appelés discordances médicamenteuses médicalement non justifiées. Leur survenue peut entrainer des préjudices pour le patient mais aussi une utilisation accrue des services de soins de santé et par conséquent une augmentation des coûts. <p><p>Dans ce contexte, la première partie de ce travail est consacrée à la mise au point d’un instrument valide et fiable permettant de caractériser les discordances médicamenteuses médicalement non justifiées lors de la sortie de l’hôpital. Il s’avère particulièrement bien approprié pour la recherche ou pour la familiarisation à la problématique. La deuxième partie de ce travail a permis de mettre en œuvre cet outil dans une situation clinique réelle. Une étude prospective d’observation incluant des patients recevant les soins usuels (groupe contrôle) et des patients pris en charge par des pharmaciens cliniciens (groupe intervention) a été réalisée. L’intervention des pharmaciens cliniciens comportait la réalisation d’une conciliation médicamenteuse à l’admission et à la sortie de l’hôpital. La conciliation médicamenteuse est un processus structuré pendant lequel le professionnel de santé collabore avec le patient, la famille et les proches pour s’assurer qu’une information correcte et exhaustive sur les médicaments est communiquée lors de la transition du patient entre les secteurs de soins. Elle consiste en la vérification (collecte d’un historique médicamenteux correct et l’identification des discordances médicamenteuses), la clarification (s’assurer que les médicaments et la posologie sont appropriés), la conciliation (documentation de chaque changement de médicament et éducation du patient à ce sujet) et finalement le transfert d’information aux autres professionnels de santé. Les résultats montrent que l’intervention des pharmaciens cliniciens diminue le risque de discordances médicamenteuses médicalement non justifiées après la sortie de l’hôpital. De plus, la satisfaction des patients vis à vis de l’information sur les médicaments prescrits à la sortie est significativement plus élevée dans le groupe pris en charge par le pharmacien clinicien. Cependant, aucun impact n’a été montré sur l’utilisation des services de soins (visites aux urgences et réadmission à l’hôpital) dans le mois après la sortie. Finalement, la dernière partie de ce travail a permis de développer une information sur les médicaments destinée aux pharmaciens d’officine à la sortie de l’hôpital du patient. Une étude prospective a évalué l’effet de la remise de cette information, dénommée feuille de transfert, par le pharmacien clinicien au patient. Une enquête en ligne ouverte à tous les pharmaciens d’officine a par ailleurs évalué leurs besoins en information. Il a été observé que la communication d’une feuille de transfert contenant des informations sur le traitement médicamenteux à la sortie de l’hôpital présente un réel intérêt pour le pharmacien d’officine. Ces informations vont en effet au-delà des informations retrouvées sur une prescription médicale. Néanmoins, la feuille de transfert devrait inclure davantage d'informations nécessaires pour la réalisation des soins pharmaceutiques. <p><p>En conclusion, ce travail a permis de développer, d’une part, un nouvel outil de détection et de classification des discordances médicamenteuses médicalement non justifiées et d’autre part, un modèle de pratique qui a montré son efficacité sur la continuité des traitements médicamenteux lors de la sortie des patients de l’hôpital à leur domicile, en maison de repos et en revalidation. Toutefois, des perspectives d’amélioration de ce modèle ont été mises en évidence et mériteraient une attention particulière dans le futur. / Doctorat en Sciences biomédicales et pharmaceutiques / info:eu-repo/semantics/nonPublished

Background: The purpose of drug treatment is to reduce morbidity and mortality, and to improve health-related quality of life. However, there are frequent problems associated with drug treatment, especially among the elderly. The aim of this thesis was to investigate the impact of clinical pharmacy services within a multiprofessional healthcare team on quality and safety of patients’ drug therapy, and to study the frequency and nature of medication history errors on admission to hospital. Methods: A model for clinical pharmacy services within a multiprofessional healthcare team (the Lund Integrated Medicines Management model, LIMM) was introduced in three hospital wards. On admission of patients to hospital, clinical pharmacists conducted medication reconciliation (i.e. identified the most accurate list of a patient’s current medications) to identify any errors in the hospital medication list. To identify, solve and prevent any other drug-related problems, the clinical pharmacists interviewed patients and performed medication reviews and monitoring of drug therapy. Drug-related problems were discussed within the multiprofessional team and the physicians adjusted the drug therapy as appropriate. Results: On admission to hospital, drug-related problems, such as low adherence to drug therapy and concerns about treatment, were identified. Different statistical approaches to present results from ordinal data on adherence and beliefs about medicines were suggested. Approximately half of the patients were affected by errors in the medication history at admission to hospital; patients who had many prescription drugs had a higher risk for errors. Medication reconciliation and review reduced the number of inappropriate medications and reduced drug-related hospital revisits. No impact on all-cause hospital revisits was demonstrated. Conclusion: Patients admitted to hospital are at high risk for being affected by medication history errors and there is a high potential to improve their drug therapy. By reducing medication history errors and improving medication appropriateness, clinical pharmacy services within a multiprofessional healthcare team improve the quality and safety of patients’ drug therapy. The impact of routine implementation of medication reconciliation and review on healthcare visits will need further evaluation; the results from this thesis suggest that drug-related hospital revisits could be reduced. / Läkemedelsgenomgångar och läkemedelsavstämning - LIMM-modellen