Estudio del switch de adalimumab por su biosimilar en un hospital de tercer nivel / Study of adalimumab switch for its biosimilar in a tertiary hospital

Objetivos: Debido al aumento en el consumo de los medicamentos biológicos y al impacto que esto supone en el gasto hospitalario, los objetivos de este estudio son: calcular el ahorro económico anual generado por el switch a adalimumab biosimilar y analizar el porcentaje de pacientes que mantienen dicho tratamiento en un hospital de tercer nivel. Material y métodos: Estudio descriptivo, observacional, longitudinal, retrospectivo en el que se incluyeron un grupo de pacientes a los que se les realizó switch de adalimumab por su biosimilar cuando en la Comisión Asesora Técnica de medicamentos de la comunidad se autorizó dicho cambio. Resultados: De los 218 pacientes, nueve tuvieron que volver al medicamento original (4,13%). La motivación fue: pérdida de eficacia en cinco, reacción alérgica en tres y otro, un paciente pediátrico con dolor tras la inyección del medicamento biosimilar. El coste de adquisición en nuestro hospital de una unidad del medicamento original es de 195,6 €, mientras que del biosimilar es de 75 €. Si consideramos una posología cada dos semanas, ya que es la más frecuente en nuestros pacientes, el coste anual por paciente con el original sería de 5.085 € y con el biosimilar de 1.950 €. Por lo tanto, el ahorro anual que supone el cambio del medicamento original al biosimilar es de 683.560 €. Conclusiones: El switch de adalimumab original al biosimilar supone un importante ahorro económico sin que se reduzca la efectividad en el proceso de su enfermedad. Lo que contribuye a la eficiencia y sostenibilidad del sistema sanitario. En nuestra población, el 4,13% tuvo que volver al medicamento original. Sería conveniente realizar estudios en un número superior de pacientes y continuar su seguimiento a largo plazo para obtener conclusiones más firmes. (AU)

Objectives: Due to the increase in the consumption of biologic drugs and the impact this has on hospital spending, the objectives of this study are: to calculate the economic savings generated by switching to biosimilar adalimumab and to analyze the percentage of patients who maintain this treatment in a tertiary level hospital. Material and methods: Descriptive, observational, longitudinal, retrospective study that included a group of patients who were switched from adalimumab to its biosimilar, when the Technical Advisory Committee for Medicines of the community authorized the change. Results: Of the 218 patients, nine had to return to the original drug (4.13%). The motivation was: loss of efficacy in five, allergic reaction in three and the other was a pediatric patient with pain after injection of the biosimilar drug. The acquisition cost in our hospital of an unit of the original drug is €195.6, while that of the biosimilar is €75. If we consider a dosage every two weeks, since this is the most frequent in our patients, the annual cost per patient with the original drug would be €5,085 and with the biosimilar €1,950. Therefore, the annual savings from switching from the original drug to the biosimilar is €683,560. Conclusions: Switching from the original adalimumab to the biosimilar means significant economic savings without reducing the effectiveness of the disease process. This contributes to the efficiency and sustainability of the halthcare system. In our population, 4.13% had to return to the original drug. It would be advisable to carry out the study in a larger number of patients and to continue its long-term follow-up to obtain firmer conclusions. (AU)

Impacto de la atención farmacéutica en pacientes polimedicados ingresados en un servicio de Geriatría / Impact of pharmaceutical care in polymedicated patients admitted to a geriatric ward

Fundamento. Estimar la prevalencia de prescripción potencialmente inadecuada (PPI) y de problemas relacionados con los medicamentos (PRM) en pacientes ancianos polimedicados hospitalizados, y evaluar el impacto de la intervención farmacéutica sobre dicha prevalencia. Material y métodos. Estudio de intervención, cuasi-experimental, en pacientes polimedicados (≥ 6 fármacos) que ingresaron en un servicio de Geriatría en 2018-2019. Se analizaron las PPI según criterios STOPP/START 2014 y los PRM según el Tercer Consenso de Granada. Los PPI y PRM detectados, junto con posibles acciones para solucionarlos, se remitieron al geriatra responsable. Si al alta el cambio en la prevalencia de PPI y PRM fue ≥75%, se consideró aceptada la intervención. Resultados. Se realizó intervención farmacéutica en 218 pacientes, analizándose 1.837 prescripciones. Al ingreso se observaron PPI (90,8%) y PRM (99,5%). Se realizaron 1.227 intervenciones, el 57,6% sobre PRM. Se aceptó el 53,6% de las intervenciones farmacéuticas; la PPI según criterios STOPP y START se redujo un 49,7 y un 22,1%, respectivamente; los PRM disminuyeron un 60,1%. Las frecuencias y medianas de PRM y de PPI según criterios START y STOPP se redujeron significativamente al alta. Las variables más asociadas con la aceptación de la intervención farmacéutica fueron el geriatra responsable, el número de PPI START y el número de PPI STOPP. Conclusiones. Durante el ingreso hospitalario, la detección de PPI y PRM del tratamiento crónico por el farmacéutico, y en colaboración con el médico del paciente, ayuda a disminuir, la prevalencia de PPI y PRM.(AU)

Background. The aim of the study was estimate the prevalence of potentially inappropriate prescribing (PIP) and drug related problems (DRP) in an acute geriatric ward, and to evaluate the impact of pharmaceutical intervention on their prevalence. Methods. Quasi-experimental, interventional study in polymedicated patients (≥ 6 drugs) who were admitted to a Geriatric ward in 2018-2019. PIP were analyzed according to STOPP/START 2014 criteria and DRP on the Third Consensus of Granada. The PIP and DRP detected, and the possible actions to correct them, PI were sent to the physician in charge. The effect of the intervention was analyzed at hospital discharge; if the change of prevalence of PIP and DRP was ≥75%, the pharmaceutical intervention was considered to be accepted. Results. Pharmaceutical intervention was performed on 218 patients, analyzing 1,837 prescriptions. On admission, PIP (90.8%) and DRP (99.5%) were observed. We carried out 1,227 interventions, 57.6% on DRP. More than half (53.6%) of the pharmaceutical interventions were accepted; the PIP according to the STOPP and START criteria was reduced by 49.7 and 22.1%, respectively; DRP decreased by 60.1%. The frequencies and medians of PRM and PPI according to the START and STOPP criteria decreased significantly at discharge. The variables most frequently associated with acceptance of the pharmaceutical intervention were the geriatrician at charge, the number of PPI START and the number of PPI STOPP. Conclusion. The detection of PIP and DRP of chronic treatment during hospital admission by the pharmacist, and in collaboration with the patient’s doctor, helps to reduce the prevalence of PIP and DRP.(AU)

[Impact of pharmaceutical care in polymedicated patients admitted to a geriatric ward].

BACKGROUND: The aim of the study was estimate the prevalence of potentially inappropriate prescribing (PIP) and drug related problems (DRP) in an acute geriatric ward, and to evaluate the impact of pharmaceutical intervention on their prevalence. METHODS: Quasi-experimental, interventional study in polymedicated patients (= 6 drugs) who were admitted to a Geriatric ward in 2018-2019. PIP were analyzed according to STOPP/START 2014 criteria and DRP on the Third Consensus of Granada. The PIP and DRP detected, and the possible actions to correct them, were sent to the physician in charge. The effect of the intervention was analyzed at hospital discharge; if the change of prevalence of PIP and DRP was =75%, the pharmaceutical intervention was considered to be accepted. RESULTS: Pharmaceutical intervention was performed on 218 patients, analyzing 1,837 prescriptions. On admission, PIP (90.8%) and DRP (99.5%) were observed. We carried out 1,227 interventions, 57.6% on DRP. More than half (53.6%) of the pharmaceutical interventions were accepted; the PIP according to the STOPP and START criteria was reduced by 49.7 and 22.1%, respectively; DRP decreased by 60.1%. The frequencies and medians of PRM and PPI according to the START and STOPP criteria decreased significantly at discharge. The variables most frequently associated with acceptance of the pharmaceutical intervention were the geriatrician at charge, the number of PPI START and the number of PPI STOPP. CONCLUSION: The detection of PIP and DRP of chronic treatment during hospital admission by the pharmacist, and in collaboration with the patient's doctor, helps to reduce the prevalence of PIP and DRP.

Análisis de la prescripción potencialmente inadecuada según los criterios STOPP/START en un centro socioasistencial / Analysis of potentially inappropriate prescription according to STOPP / START criteria in a long term care facility

Introducción: El aumento de la esperanza de vida hace que cada vez existan más personas polimedicadas, pluripatológicas e institucionalizadas que son más susceptibles de sufrir interacciones medicamentosas, reacciones adversas y prescripciones potencialmente inapropiadas (PPI). Objetivos: Analizar la PPI según los criterios STOPP/START 2014 en pacientes mayores de 65 años que residen en un centro sociosanitario. Estimar la media de interacciones farmacológicas relevantes por paciente y el tipo de interacción más frecuente. Métodos: Estudio observacional descriptivo de tres meses de duración en el que se revisaron los tratamientos de los pacientes ≥ 65 años de una residencia sociosanitaria vinculada al Servicio de Farmacia del Hospital.Las variables estudiadas fueron edad, sexo, tipo de patología, Nº de patologías por paciente, medicación crónica, Nº de medicamentos por paciente, PPI, tipo de PPI, tipo de PPI START, Nº de PPI START, tipo de PPI STOPP, Nº de PPI STOPP, interacción relevante y tipo de interacción. Resultados: El tamaño muestral fue de 103 pacientes, el 73,8% eran mujeres. La media de edad fue de 85,2 ± 7,9 años. El consumo medio de medicamentos por paciente fue de 7,4 ± 2,9. El 81,6 % de los pacientes presentó PPI con 2,2 ± 0,9 criterios por paciente. El 57,3% de los pacientes presentó interacción potencial. Las más frecuentes fueron: riesgo de síndrome serotoninérgico (40%) y prolongación del intervalo QT (38,2%). Conclusiones: Los criterios STOPP/START son una herramienta útil para evitar PPI. Un programa de adecuación de la medicación por un equipo multidisciplinar podría reportar beneficios para la salud en este sector (AU)

Introduction: The increase in life expectancy means that more and more polymedicated, pluripathological and institutionalized individuals are more susceptible to drug interactions, adverse reactions and potentially inappropriate prescriptions (PPI). Aim: To analyze the PPI according to the STOPP / START 2014 criteria in patients ≥ 65 years residing in a long term care facility. To estimate the average of relevant pharmacological interactions for each patient as well as the most frequent type of interaction. Methods: It was carried out a three-month descriptive observational study in which the treatments of ≥ 65 years patients from a long term care facility linked to the Pharmacy Service of the hospital were reviewed. The variables studied were age, sex, type of pathology, number of pathologies per patient, chronic prescribed medication, number of medications per patient, potentially inappropriate prescription (PPI), type of PPI, type of PPI START, number of PPI START, type of PPI STOPP, number of PPI STOPP, relevant interaction and type of interaction. Results: The sample size was 103 patients. 73.8% were women. The average age was 85.2 ± 7.9 years. Average consumption of drugs was 7.4 ± 2.9. 81.6% of the patients presented PPI with 2, 2 ± 0, 9 criteria per patient. 57.3% of the patients presented some potential interaction. Conclusions: The STOPP / START criteria are a useful tool to avoid PPI. A program of medication adaptation created by a multidisciplinary team could provide health benefits in this sector (AU)