Probable interacción farmacológica entre sulfonilurea y betabloqueante en paciente con DM-II. Un reporte de caso / Probable pharmacological interaction between sulfonylurea and beta blocker in patients with DM-II. A case report

El estudio presenta el caso de una mujer de 47 años con diabetes tipo 2 (DM-II), hipertensión y anemia, tratada con metformina, glibenclamida, metoprolol y hierro/ácido fólico. Se identificó una interacción farmacológica entre glibenclamida y metoprolol, causando síntomas de hipoglucemia por la tarde. La evaluación mediante la Escala de Probabilidad de Interacciones Farmacológicas (EPIF) de Horn sugirió una interacción probable. El análisis farmacocinético reveló que el tiempo en el cual se alcanzan las concentraciones máximas de ambos fármacos coincidía con el inicio de los síntomas. Se implementó un nuevo horario de medicación que resolvió los síntomas. La interacción farmacológica se atribuyó al bloqueo de los efectos adrenérgicos por el metoprolol, comprometiendo la capacidad de contrarrestar la acción de la insulina liberada por la glibenclamida. Se resalta la importancia de la vigilancia, la toma de decisiones informadas y la implementación de estrategias preventivas para garantizar la seguridad y eficacia del tratamiento farmacológico en pacientes con condiciones clínicas específicas, como la DM-II y enfermedades cardiovasculares concomitantes.(AU)

Relação entre benefício e risco em interações medicamentosas nas prescrições médicas de um hospital universitário no estado de São Paulo / Benefit-risk relationship in drug interactions in prescriptions from a university hospital in the state of São Paulo / Relación beneficio-riesgo en interacciones medicamentosas en prescripciones de un hospital universitario del estado de São Paulo

Objetivo: Avaliar interações medicamentosas (IM), em que os riscos se so- brepõem aos benefícios (nível I) ou os benefícios se sobrepõem aos riscos (nível II); a partir da análise retrospectiva de prescrições médicas em um Hospital Universitário no estado de São Paulo, Brasil. Métodos: Foram analisadas 19762 prescrições médicas des- tinadas à farmácia do hospital, de janeiro a setembro de 2009; com o auxílio de programas sobre IM, para categorizar IM de nível I e II. Resultados: Na análise 26,53% apresentaram IM, em que 23,64% foram classificadas em nível I e 76,35% em nível II. Dentre as IM com maior frequência no nível I, estavam: ácido acetilsalicílico (AAS) e clopidogrel, AAS e heparina, captopril e espironolactona, digoxina e hidroclorotiazida. Houve uma redução em percentual de IM de nível I, comparando janeiro representado por 26,5% e setembro representado por 18,4%. Já nas IM de nível II, tem-se as seguintes associações com maior frequência: AAS e propranolol, AAS e insulina regular humana, AAS e ate- nolol, AAS e enalapril, AAS e carvedilol. Conclusão: A atuação dos farmacêuticos cola- borou à redução de IM de nível I, devido à intervenção por meio de comunicação estabe- lecida com os prescritores; sinalizando a importância da equipe interprofissional em saúde.

Objective: To evaluate drug interactions (MI), in which risks outweigh the benefits (level I) or benefits outweigh the risks (level II); from the retrospective analysis of medical prescriptions in a University Hospital in the state of São Paulo, Brazil. Methods: 19,762 prescriptions destined to the hospital pharmacy were analyzed, from January to September 2009; with the help of programs on MI, to categorize level I and II MI. Results: In the analysis 26.53% presented MI, in which 23.64% were classified in level I and 76.35% in level II. Among the most frequent level I MI were: acetylsalicylic acid (ASA) and clopidogrel, ASA and heparin, captopril and spironolactone, digoxin and hydrochlorothiazide. There was a reduction in the percentage of level I MI, comparing January, which accounted for 26.5%, and September, which accounted for 18.4%. As for level II MI, the following associations were more frequent: ASA and propranolol, ASA and regular human insulin, ASA and atenolol, ASA and enalapril, ASA and carvedilol. Conclusion: The role of pharmacists collaborated to the reduction of level I MI, due to the intervention by means of communication established with the prescribers; signaling the importance of the interprofessional health team.

Objetivo: Evaluar las interacciones medicamentosas (IM), en las que los riesgos superan a los beneficios (nivel I) o los beneficios superan a los riesgos (nivel II); a partir del análisis retrospectivo de las prescripciones médicas en un Hospital Universitario del estado de São Paulo, Brasil. Métodos: Se analizaron 19.762 prescripciones destinadas a la farmacia del hospital, de enero a septiembre de 2009; con la ayuda de programas sobre IM, para categorizar los IM de nivel I y II. Resultados: En el análisis el 26,53% presentaron IM, en el que el 23,64% se clasificaron en nivel I y el 76,35% en nivel II. Entre los IM de nivel I más frecuentes estaban: ácido acetilsalicílico (AAS) y clopidogrel, AAS y heparina, captopril y espironolactona, digoxina e hidroclorotiazida. Hubo una reducción del porcentaje de IM de nivel I, comparando enero, que supuso el 26,5%, y septiembre, que supuso el 18,4%. En cuanto a los IM de nivel II, fueron más frecuentes las siguientes asociaciones: AAS y propranolol, AAS e insulina humana regular, AAS y atenolol, AAS y enalapril, AAS y carvedilol. Conclusiones: El papel de los farmacéuticos colaboró a la reducción de las IM de nivel I, debido a la intervención mediante la comunicación establecida con los prescriptores; señalando la importancia del equipo sanitario interprofesional.

Tratamientos modificadores de la enfermedad en pacientes con esclerosis múltiple en España / Disease-modifying treatments for patients with multiple sclerosis in Spain

La esclerosis múltiple es una enfermedad desmielinizante crónica del sistema nervioso central y discapacitante a largo plazo. Existen diferentes tratamientos modificadores de la enfermedad. Estos pacientes, a pesar de ser generalmente jóvenes, tienen una elevada comorbilidad y riesgo de polimedicación por su compleja sintomatología y discapacidad. Objetivo principal determinar el tipo de tratamiento modificador de la enfermedad en los pacientes atendidos en servicios de farmacia de hospitales españoles. Objetivos secundarios Conocer los tratamientos concomitantes, determinar la prevalencia de la polifarmacia, identificar la prevalencia de interacciones y analizar la complejidad farmacoterapéutica. Método estudio observacional, transversal y multicéntrico. Se incluyeron todos los pacientes con diagnóstico de esclerosis múltiple y tratamiento modificador de la enfermedad activo a los que se atendió en las consultas de pacientes externos o en los hospitales de día durante la segunda semana de febrero 2021. Se recogieron: el tratamiento modificador, las comorbilidades y los tratamientos concomitantes para determinar el patrón de multimorbilidad, polifarmacia, complejidad farmacoterapéutica (Medication Regimen Complexity Index) e interacciones medicamentosas. Resultados se incluyeron 1.407 pacientes de 57 centros de 15 Comunidades Autónomas. La forma de presentación de la enfermedad más frecuente fue la forma remitente recurrente (89,3%). El tratamiento modificador de la enfermedad más prescrito fue dimetilfumarato (19,1%), seguido de teriflunomida (14,0%). De los tratamientos modificadores parenterales, los 2 más prescritos fueron el acetato de glatiramero y el natalizumab con un 11,1 y 10,8% respectivamente. El 24,7% de los pacientes tenían una comorbilidad y el 39,8% al menos 2 comorbilidades. El 13,3% pertenecía al menos a uno de los patrones definidos de multimorbilidad y el 16,5% pertenecían a 2 o más patrones. ... (AU)

Multiple sclerosis is a chronic demyelinating disease of the central nervous system and long-term disabling. Different disease-modifying treatments are available. These patients, despite being generally young, have high comorbidity and risk of polymedication due to their complex symptomatology and disability.Objective primaryTo determine the type of disease-modifying treatment in patients seen in Spanish hospital pharmacy departments.Secondary objectivesTo determine concomitant treatments, determine the prevalence of polypharmacy, identify the prevalence of interactions and analyse pharmacotherapeutic complexity.MethodObservational, cross-sectional, multicentre study. All patients with a diagnosis of multiple sclerosis and active disease-modifying treatment who were seen in outpatient clinics or day hospitals during the second week of February 2021 were included. Modifying treatment, comorbidities and concomitant treatments were collected to determine multimorbidity pattern, polypharmacy, pharmacotherapeutic complexity (Medication Regimen Complexity Index) and drug-drug interactions.Results1,407 patients from 57 centres in 15 autonomous communities were included. The most frequent form of disease presentation was the relapsing remitting form (89.3%). The most prescribed disease-modifying treatment was dimethyl fumarate (19.1%), followed by teriflunomide (14.0%). Of the parenteral disease-modifying treatments, the two most prescribed were glatiramer acetate and natalizumab with 11.1% and 10.8%. 24.7% of the patients had one comorbidity and 39.8% had at least 2 comorbidities. 13.3% belonged to at least one of the defined patterns of multimorbidity and 16.5% belonged to 2 or more patterns. The concomitant treatments prescribed were psychotropic drugs (35.5%); antiepileptic drugs (13.9%) and antihypertensive drugs and drugs for cardiovascular pathologies (12.4%). ... (AU)

[Translated Article] Disease-modifying treatments for patients with multiple sclerosis in Spain.

Multiple sclerosis is a chronic demyelinating disease of the central nervous system and long-term disabling. Different disease-modifying treatments are available. These patients, despite being generally young, have high comorbidity and risk of polymedication due to their complex symptomatology and disability. OBJECTIVE PRIMARY: To determine the type of disease-modifying treatment in patients seen in Spanish hospital pharmacy departments. SECONDARY OBJECTIVES: to determine concomitant treatments, determine the prevalence of polypharmacy, identify the prevalence of interactions and analyze pharmacotherapeutic complexity. METHOD: Observational, cross-sectional, multicentre study. All patients with a diagnosis of multiple sclerosis and active disease-modifying treatment who were seen in outpatient clinics or day hospitals during the second week of February 2021 were included. Modifying treatment, comorbidities and concomitant treatments were collected to determine multimorbidity pattern, polypharmacy, pharmacotherapeutic complexity (Medication Regimen Complexity Index) and drug-drug interactions. RESULTS: 1407 patients from 57 centres in 15 autonomous communities were included. The most frequent form of disease presentation was the relapsing remitting form (89.3%). The most prescribed disease-modifying treatment was dimethyl fumarate (19.1%), followed by teriflunomide (14.0%). Of the parenteral disease-modifying treatments, the two most prescribed were glatiramer acetate and natalizumab with 11.1% and 10.8%. 24.7% of the patients had 1 comorbidity and 39.8% had at least 2 comorbidities. 13.3% belonged to at least one of the defined patterns of multimorbidity and 16.5% belonged to 2 or more patterns. The concomitant treatments prescribed were psychotropic drugs (35.5%); antiepileptic drugs (13.9%) and antihypertensive drugs and drugs for cardiovascular pathologies (12.4%). The presence of polypharmacy was 32.7% and extreme polypharmacy 8.1%. The prevalence of interactions was 14.8%. Median pharmacotherapeutic complexity was 8.0 (IQR: 3.3-15.0). CONCLUSIONS: We have described the disease-modifying treatment of patients with multiple sclerosis seen in Spanish pharmacy services and characterized concomitant treatments, the prevalence of polypharmacy, interactions, and their complexity.

Influencia de la polifarmacia en la presencia simultánea de alta complejidad farmacoterapéutica, interacciones medicamentosas y no adherencia a la medicación en pacientes con infección por VIH. Proyecto 3-HIT / Influence of polypharmacy in the simultaneous presence of high pharmacotherapeutic complexity, drug interactions and non-adherence to medication in patients with HIV infection. Project 3-HIT

Introducción: La alta complejidad farmacoterapéutica, las interacciones farmacológicas y la falta de adherencia a la medicación concomitante son circunstancias con consecuencias negativas en la evolución clínica de los pacientes con infección por VIH. El fenómeno 3-HIT se refiere a la ocurrencia simultánea de estas situaciones. El objetivo del estudio es determinar la prevalencia del fenómeno 3-HIT en la población VIH polimedicada así como determinar los factores relacionados con su ocurrencia. Métodos: Estudio observacional, retrospectivo y unicéntrico que incluyó a todos los pacientes ancianos en tratamiento antirretroviral activo en seguimiento farmacoterapéutico entre enero y marzo de 2020. Se realizó un modelo de regresión logística para evaluar los factores asociados a la ocurrencia del 3-HIT concepto con las variables significativamente asociadas a este fenómeno y aquellas consideradas clínicamente relevantes. Resultados: Se incluyeron 428 pacientes, registrándose una prevalencia de polifarmacia en el 25,9% de la muestra de estudio. El fenómeno 3-HIT se detectó en el 6,3% de los pacientes. Por cada fármaco concomitante prescrito, el riesgo de desarrollar el fenómeno 3-HIT aumenta 1,5 veces. Conclusión: La prevalencia del fenómeno 3-HIT es alta en pacientes VIH con polimedicación. Un cambio en el modelo de atención farmacéutica a un entorno multidimensional es esencial, junto con estrategias de optimización farmacoterapéutica para mejorar los resultados de salud de los pacientes.(AU)

Introduction: The high pharmacotherapeutic complexity, drug interactions and lack of adherence to concomitant medication are circumstances with negative consequences in the clinical evolution of patients with HIV infection. The 3-HIT phenomenon refers to the simultaneous occurrence of these situations. The objective of the study is to determine the prevalence of the phenomenon 3-HIT in the polymedicated HIV population as well as to determine factors related to its occurrence. Methods: Observational, retrospective and single-center study that included all elderly patients on active antiretroviral treatment in pharmacotherapeutic follow-up between January and March 2020. A logistic regression model was carried out to evaluate the factors associated with the occurrence of the 3-HIT concept with the variables significantly associated with this phenomenon and those considered clinically relevant. Results: 428 patients were included, registering a prevalence of polypharmacy in 25.9% of the study sample. The 3-HIT phenomenon was detected in 6.3% of the patients. For each concomitant drug prescribed the risk of developing the phenomenon 3-HIT increases 1.5 times. Conclusion: Prevalence of the phenomenon 3-HIT is high in HIV patients with polymedication. A change in the pharmaceutical care model to a multidimensional setting is essential, together with pharmacotherapeutic optimization strategies to improve patient health outcomes.(AU)

Recommendations on the use of azole antifungals in hematology-oncology patients / Recomendaciones sobre el uso de antifúgicos azolicos en el paciente oncohematológico

The administration of antifungals for therapeutic and, especially, prophylactic purposes is virtually a constant in patients requiring hematology-oncology treatment. Any attempt to prevent or treat Aspergillus or Mucor infections requires the administration of some drugs in the azole group, which include voriconazole, posaconazole and isavuconazole, noted for their activity against these pathogens. One very relevant aspect is the potential risk of interaction when associated with one of the antineoplastic drugs used to treat hematologic tumors, with serious complications. In this regard, acalabrutinib, bortezomib, bosutinib, carfilzomib, cyclophosphamide, cyclosporine A, dasatinib, duvelisib, gilteritinib, glasdegib, ibrutinib, imatinib, nilotinib, ponatinib, prednisone, ruxolitinib, tacrolimus, all-transretinoic acid, arsenic trioxide, venetoclax, or any of the vinca alkaloids, are very clear examples of risk, in some cases because their clearance is reduced and in others because of increased risk of QTc prolongation, which is particularly evident when the drug of choice is voriconazole or posaconazole. (AU)

La administración de antifúngicos con fines terapéuticos y especialmente, profilácticos es casi un constante en el paciente que precisa tratamiento oncohematológico. El intento de evitar o de tratar infecciones por Aspergillus o por Mucor exige la administración de algunos fármacos pertenecientes al grupo de los azoles, entre los que destacan por su actividad frente a estos patógenos, voriconazol, posaconazol e isavuconazol. Un aspecto de gran importancia es el riesgo potencial de interacciones cuando se asocian a alguno de los fármacos antineoplásico utilizados en el tratamiento de los tumores hematológicos, dando lugar a graves complicaciones. En este sentido, acalabrutinib, bortezomid, bosutinib, carfizolid, ciclofosfamida, ciscloporina A, dasatinib, duvelisib, gilteritinib, glasdegib, ibrutinib, imatinib, nilotinib, ponatinib, prednisona, ruxolitinib, tacrolimus, transretinoico, trióxido de Arsenio, venetoclax, o cualquiera de los alcaloides de la vinca, representan ejemplos muy evidentes de riesgos en unos casos porque su aclaramiento resulta reducido, en otros porque que se potencia el riesgo de prolongación del QTc, especialmente evidentes cuando el fármaco elegido es voriconazol o posaconazol. (AU)

Atrial fibrillation and QT prolongation after a single dose of hydroxychloroquine / Fibrilación auricular y prolongación del QT después de una dosis única de hidroxicloroquina

Non-antiarrhythmic drugs may induce QT-prolongation and increase the risk of arrhythmias. Recent studies have determined that there is a risk of atrial fibrillation (AF) due to QT prolongation. We report a case of FA associated to QT prolongation secondary to a single dose of hydroxychloroquine (HCQ) in an 83-years-old polymedicated patient admitted to our hospital due to SARS-CoV-2 infection. Quetiapine was prescribed as regular medicine after admission and a 5-days oral HCQ regimen was started for COVID-19. Thirty minutes after HCQ loading dose, FA was reported on electrocardiogram (EKG). COVID-19 treatment is leading to use off-label drugs that may generate adverse effects. It should be considered that drugs that induce QT prolongation may be triggers for atrial arrhythmias. There is not any report of sudden onset of increased QT interval with associated arrythmia after a single dose of HCQ, even in a short course treatment. (AU)

Los fármacos no antiarrítmicos pueden inducir la prolongación del intervalo QT y aumentar el riesgo de arritmias. Estudios recientes han determinado que existe riesgo de desarrollar fibrilación auricular (FA) asociada a la prolongación del intervalo QT. Presentamos un caso de FA asociado a prolongación del QT secundario a una dosis única de hidroxicloroquina (HCQ) en una paciente polimedicada de 83 años ingresada en nuestro hospital por infección por SARS-CoV-2. A la paciente se le prescribió quetiapina como parte de su medicamento habitual al ingreso y se inició tratamiento frente a COVID-19 basado en HCQ oral. Treinta minutos tras la dosis de carga de HCQ, se informó FA en el electrocardiograma (ECG). El tratamiento de COVID-19 está llevando al uso de medicamentos no aprobados que pueden generar efectos adversos. Además, debe considerarse que los fármacos que inducen la prolongación del QT pueden desencadenar arritmias auriculares. No se han reportado casos de aparición repentina de aumento del intervalo QT con arritmia asociada después de una dosis única de HCQ. (AU)

Disease-modifying treatments for patients with multiple sclerosis in Spain. / Tratamientos modificadores de la enfermedad en pacientes con esclerosis múltiple en España.

Multiple sclerosis is a chronic demyelinating disease of the central nervous system and long-term disabling. Different disease-modifying treatments are available. These patients, despite being generally young, have high comorbidity and risk of polymedication due to their complex symptomatology and disability. OBJECTIVE PRIMARY: To determine the type of disease-modifying treatment in patients seen in Spanish hospital pharmacy departments. SECONDARY OBJECTIVES: To determine concomitant treatments, determine the prevalence of polypharmacy, identify the prevalence of interactions and analyse pharmacotherapeutic complexity. METHOD: Observational, cross-sectional, multicentre study. All patients with a diagnosis of multiple sclerosis and active disease-modifying treatment who were seen in outpatient clinics or day hospitals during the second week of February 2021 were included. Modifying treatment, comorbidities and concomitant treatments were collected to determine multimorbidity pattern, polypharmacy, pharmacotherapeutic complexity (Medication Regimen Complexity Index) and drug-drug interactions. RESULTS: 1,407 patients from 57 centres in 15 autonomous communities were included. The most frequent form of disease presentation was the relapsing remitting form (89.3%). The most prescribed disease-modifying treatment was dimethyl fumarate (19.1%), followed by teriflunomide (14.0%). Of the parenteral disease-modifying treatments, the two most prescribed were glatiramer acetate and natalizumab with 11.1% and 10.8%. 24.7% of the patients had one comorbidity and 39.8% had at least 2 comorbidities. 13.3% belonged to at least one of the defined patterns of multimorbidity and 16.5% belonged to 2 or more patterns. The concomitant treatments prescribed were psychotropic drugs (35.5%); antiepileptic drugs (13.9%) and antihypertensive drugs and drugs for cardiovascular pathologies (12.4%). The presence of polypharmacy was 32.7% and extreme polypharmacy 8.1%. The prevalence of interactions was 14.8%. Median pharmacotherapeutic complexity was 8.0 (IQR: 3.3 -- 15.0). CONCLUSIONS: We have described the disease-modifying treatment of patients with multiple sclerosis seen in Spanish pharmacy services and characterised concomitant treatments, the prevalence of polypharmacy, interactions, and their complexity.

Alucinaciones secundarias a tratamiento en paciente con Parkinson / Hallucinations after treatment in a patient with Parkinson’s

La enfermedad de Parkinson (EP) se puede considerar como la segunda enfermedad neurodegenerativa en cuanto a prevalencia se refiere. La EP es una enfermedad de carácter crónico que evoluciona en fases consecutivas, con un diagnóstico inicial insidioso y de manejo complejo para el médico de Atención Primaria. En este artículo presentamos un caso de una interacción medicamentosa poco estudiada entre fármacos antidepresivos y antiparkinsonianos. La paciente acudió a revisión de neurología y, en un ajuste de medicación realizado por el compañero de neurología, se añadió rasalagina a su tratamiento habitual (levodopa/carbidopa) y ello creó a la paciente un cuadro de alucinaciones. Tras un estudio pormenorizado del caso, se llegó a la conclusión de que la rasalagina debía ser retirada y el cuadro neurológico de alucinaciones remitió.

Parkinson's Disease (PD) can be deemed the second neurodegenerative disease in terms of prevalence. PD is a chronic disease that evolves in consecutive phases, with an insidious initial diagnosis and complex management for the primary care physician. In this paper we report a case of a poorly studied drug interaction between antidepressant and antiparkinsonian drugs. The patient went to a neurology review where, in a medication adjustment made by a neurology colleague, Rasalagin was added to her usual treatment (levodopa/carbidopa), which created hallucinations in the patient. After a minor case study, the conclusion was drawn that rasalagin should be withdrawn and the neurological picture of hallucinations remitted.(AU)

Reações adversas medicamentosas em pacientes em quimioterapia e estratégias de intervenções / Adverse drug reactions in chemotherapy patients and intervention strategies / Reacciones adversas a medicamentos en pacientes quimioterápicos y estrategias de intervención

A quimioterapia do câncer pode ocasionar reações adversas medicamentosas (RAM), podendo resultar de interações medicamentosas (IM) e impactar na adesão. O presente estudo relatou as RAM apresentadas por pacientes em quimioterapia (QT) e propôs estratégias de intervenções. Este trabalho foi aprovado em comité de ética (5.160.503), sendo incluídos 23 pacientes em quimioterapia (oral- VO e/ou endovenosa- EV) e todos foram entrevistados. Recebiam apenas o QTEV, 20 pacientes e 2 QTEV e VO, a maioria em tratamento paliativo (50%), predomínio de estadiamento IV, sendo as doenças mais presentes de pâncreas (27,3%), estômago (22,7%) e mama (18,2%) e esquema mais usado foi Carboplatina + Paclitaxel. As principais comorbidades foram diabetes e hipertensão arterial. As interações medicamentosas foram classificadas em graves (45%), moderadas (55%) e intencional (75%), sendo necessário introdução de medicamentos de suporte (61%). Houve RAM de maior gravidade, neutropenia, sendo necessário a suspensão temporária, e de menor gravidade náuseas. Houve um óbito relacionado a evolução de doença e, talvez, o tratamento possa ter contribuído. Ao final, foram feitas as intervenções para cada caso e validado o formulário para a consulta farmacêutica a pacientes oncológicos.

Cancer chemotherapy can cause adverse drug reactions (ADRs), which can result from drug interactions (IM) and impact adherence. The present study reported the ADRs presented by patients undergoing chemotherapy (CT) and proposed intervention strategies. This work was approved by the ethics committee (5,160,503), and 23 patients on chemotherapy (oral-VO and/or intravenous-IV) were included and all were interviewed. Only received CTIV, 20 patients and 2 CTIV and VO, most in palliative treatment (50%), predominance of stage IV, being the most common diseases of pancreas (27.3%), stomach (22.7%) and breast (18.2%) and the most used regimen was Carboplatin + Paclitaxel. The main comorbidities were diabetes and arterial hypertension. Drug interactions were classified as severe (45%), moderate (55%) and intentional (75%), requiring the introduction of supportive drugs (61%). There were more severe ADRs, neutropenia, requiring temporary suspension, and less severe nausea. There was one death related to the evolution of the disease and, perhaps, the treatment may have contributed. At the end, interventions were made for each case and the form for the pharmaceutical consultation to cancer patients was validated.

La quimioterapia contra el cáncer puede causar reacciones adversas a los medicamentos (RAM), que pueden ser consecuencia de interacciones farmacológicas (IM) y repercutir en la adherencia. El presente estudio reportó las RAM presentadas por pacientes en quimioterapia (QT) y propuso estrategias de intervención. Este trabajo fue aprobado en comité de ética (5.160.503), se incluyeron 23 pacientes en quimioterapia (oral- VO y/o endovenosa-EV) y todos fueron entrevistados. Recibieron sólo QTEV, 20 pacientes y 2 QTEV y VO, la mayoría en tratamiento paliativo (50%), predominio de estadiaje IV, siendo las enfermedades más presentes las de páncreas (27,3%), estómago (22,7%) y mama (18,2%) y el esquema más utilizado fue Carboplatino + Paclitaxel. Las principales comorbilidades fueron la diabetes y la hipertensión arterial. Las interacciones farmacológicas se clasificaron como graves (45%), moderadas (55%) e intencionadas (75%), requiriendo la introducción de fármacos de apoyo (61%). La RAM más grave fue la neutropenia, que requirió la suspensión temporal, y la menos grave las náuseas. Hubo una muerte relacionada con la evolución de la enfermedad y, tal vez, el tratamiento pudo haber contribuido. Al final, se realizaron intervenciones para cada caso y se validó el formulario de consulta farmacéutica a pacientes oncológicos.

Influence of polypharmacy in the simultaneous presence of high pharmacotherapeutic complexity, drug interactions and non-adherence to medication in patients with HIV infection. Project 3-HIT.

INTRODUCTION: The high pharmacotherapeutic complexity, drug interactions and lack of adherence to concomitant medication are circumstances with negative consequences in the clinical evolution of patients with HIV infection. The 3-HIT phenomenon refers to the simultaneous occurrence of these situations. The objective of the study is to determine the prevalence of the phenomenon 3-HIT in the polymedicated HIV population as well as to determine factors related to its occurrence. METHODS: Observational, retrospective and single-center study that included all elderly patients on active antiretroviral treatment in pharmacotherapeutic follow-up between January and March 2020. A logistic regression model was carried out to evaluate the factors associated with the occurrence of the 3-HIT concept with the variables significantly associated with this phenomenon and those considered clinically relevant. RESULTS: 428 patients were included, registering a prevalence of polypharmacy in 25.9% of the study sample. The 3-HIT phenomenon was detected in 6.3% of the patients. For each concomitant drug prescribed the risk of developing the phenomenon 3-HIT increases 1.5 times. CONCLUSION: Prevalence of the phenomenon 3-HIT is high in HIV patients with polymedication. A change in the pharmaceutical care model to a multidimensional setting is essential, together with pharmacotherapeutic optimization strategies to improve patient health outcomes.

Predictores de potenciales reacciones adversas e interacciones medicamentosas en pacientes post accidente cerebrovascular en Perú

Objetivo Identificar los predictores clínicos y farmacoterapéuticos asociados a los niveles de severidad de las reacciones adversas (RAM) e interacciones medicamentosas (IM) en pacientes hospitalizados post accidente cerebrovascular. Métodos Estudio analítico, predictivo y transversal mediante el modelo de regresión lineal múltiple. Los niveles de severidad de las potenciales reacciones adversas e interacciones medicamentosas se evaluaron mediante Drugs.com. Resultados De la evaluación de 992 prescripciones médicas de 55 (56,7%) pacientes mujeres y 42 (43,3%) varones post accidente cerebrovascular isquémico 62 (63,9%) y hemorrágico 35 (36,1%), se identificó un total de 11 790±46,8 potenciales reacciones adversas y 1 034±9,8 interacciones medicamentosas. La hipertensión arterial se asoció a las reacciones adversas graves y moderadas, en tanto que la neumonía intrahospitalaria y alcalosis metabólica a reacciones adversas leves y moderadas. La alcalosis metabólica se asoció a las interacciones medicamentosas moderadas y leves. Los predictores farmacoterapéuticos como la prescripción en polifarmacia y el uso de antibióticos se relacionaron con reacciones adversas graves, moderadas y leves; los antidiabéticos se relacionaron con interacciones medicamentosas graves, moderadas y los fármacos para terapia cardiaca con interacciones medicamentosas leves. Conclusiones Las variables clínicas como factores de riesgo cardiovascular, presencia de comorbilidades que exacerban las enfermedades crónicas no trasmisibles, los signos y síntomas de alarma, el mayor tiempo de estancia hospitalaria y la prescripción en polifarmacia fueron predictores de mayor frecuencia de reacciones adversas e interacciones medicamentosas graves y moderadas que requieren especial vigilancia y estudio individualizado.

Objective To identify clinical and pharmacotherapeutic predictors associated with severity levels of adverse reactions and drug-drug interactions in post-stroke hospita-lized patients. Methods Analytic, predictive, cross-sectional study using multiple linear regression modeling. Severity levels of potential adverse reactions and drug-drug interactions were assessed using Drugs.com. Results From the evaluation of 992 medical prescriptions of 55 (56.7%) female and 42 (43.3%) male patients post ischemic stroke 62(63.9%) and hemorrhagic stroke 35 (36.1%); a total of 11 790±46.8 potential adverse reactions and 1 034±9.8 drug-drug interactions were identified; arterial hypertension was associated with severe and moderate adverse reactions; while in-hospital pneumonia and metabolic alkalosis with mild and moderate adverse reactions. While metabolic alkalosis was associated with moderate and mild drug-drug interactions. Pharmacotherapeutic predictors such as polypharmacy prescription and antibiotic use were related to moderate and mild severe adverse reactions; antidiabetic drugs were related to moderate and severe drug-drug interactions and cardiac therapy drugs were related to mild drug-drug interactions. Conclusions Clinical variables such as cardiovascular risk factors, presence of comorbidities that exacerbate chronic noncommunicable diseases, alarm signs and symptoms, longer hospital stay, as well as polypharmacy prescriptions, were predictors of a higher frequency of severe and moderate adverse reactions and drug-drug interactions, which require special vigilance and individualized study.

Interacciones farmacológicas entre antivirales y plantas medicinales / Pharmacological interactions between antivirals and medicinal plants

Resumen: Objetivo: Identificar las plantas medicinales que presentan interacciones farmacológicas con los fármacos antivirales. Materiales y métodos: Se realizó una revisión bibliográfica mediante la recolección de artículos en las bases de datos PubMed, Scielo, Google académico. Se recuperó información de cada una de las plantas estudiadas hasta mayo de 2018. Se confeccionó una ficha instructiva a partir de la información obtenida, se tuvo en cuenta su utilidad y actualidad. Resultados: El 57.9% de la información fue recuperada de Google académico. El 47.9% del total de estudios revisados se referían a estudios clínicos y el 27% fueron investigaciones realizadas en Cuba. Allium sativum L. (19.7%), Hypericum perforatum (7.8%) y Panax quinquefolius (7.6%) fueron las plantas que presentaron mayor número de estudios concernientes a interacciones con antivirales. Las acciones sobre el citocromo P450 y la glicoproteína-P fueron las principales responsables de la ocurrencia de interacciones entre las plantas medicinales y los antivirales. La curcumina metabolito secundario de la Curcuma longa L. mostró potencial actividad antiviral ante virus de inmunodeficiencia humana tipo 1 sin obtenerse resultados concluyentes. Conclusiones: Podemos concluir que a pesar de que las interacciones farmacológicas entre antivirales y plantas medicinales son escasas, cuando se presentan lo hacen, en su mayoría, en forma de alteraciones farmacocinéticas. Los antirretrovirales fueron los fármacos de este grupo más involucrados en interacciones con plantas de uso común como el ajo. Los resultados encontrados fueron contradictorios en ocasiones y no todos estaban basados en evidencias clínicas.

Abstract: Objective: To identify medicinal plants that show pharmacological interactions with antiviral drugs. Materials and methods: A literature review carried out through the collection of articles in the PubMed, Scielo, Google academic databases. Information retrieved from each of the plants studied up to May 2018. An information sheet was prepared based on the information obtained and taking into account its usefulness and topicality. Results: 57.9% of the information was retrieved from academic Google. 47.9% of the total studies reviewed referred to clinical studies and 27% were investigations carried out in Cuba. Allium sativum L. (19.7%), Hypericum perforatum (7.8%) and Panax quinquefolius (7.6%) were the plants that presented the highest number of studies concerning interactions with antivirals. Actions on cytochrome P450 and P-glycoprotein were mainly responsible for the occurrence of interactions between medicinal plants and antivirals. The secondary metabolite curcumin of Curcuma longa L. showed potential antiviral activity against human immunodeficiency virus type 1 without obtaining conclusive results. Conclusions: We can conclude that although the interactions between antivirals and medicinal plants are rather rare when they occur, they do so mostly in the form of pharmacokinetic alterations. Antiretroviral drugs are the drugs of this group most involved in interactions with commonly used plants such as garlic. The results found are not all base on clinical evidence and sometime they were contradictories.

Interactions listed in the Paxlovid fact sheet, classified according to risks, pharmacological groups, and consequences / Interacciones recogidas en la ficha técnica de Paxlovid, clasificadas según los riesgos, grupos farmacológicos y consecuencias

Paxlovid (nirmatrelvir plus ritonavir) is a new oral antiviraltherapeutic for the treatment of COVID-19. Nirmatrelvir is aninhibitor of SARS-CoV-2 main protease, while ritonavir is usedas a CYP3A inhibitor in low doses to slow the metabolism ofnirmatrelvir, thus enhancing their therapeutic effect. The isoenzyme CYP3A4 is responsible for at least part of the oxidativemetabolism of approximately 60% of available medicationsand ritonavir is therefore a significant source of drug interactions. We describe here the drugs that are contraindicatedor should be used with or without precautions when Paxlovid(nirmaltrevir plus ritonavir) should be administered accordingto each fact sheet in force at the Spanish Agency for Medicines and Health Products (AU)

Paxlovid (nirmatrelvir más ritonavir) es un nuevo tratamiento antivírico oral para la COVID-19. Nirmatrelvir es un inhibidor de la principal proteasa del SARS-CoV-2, mientras queritonavir es usado como un inhibidor de la CYP3A a baja dosispara reducir el metabolismo de nirmatrelvir, potenciando asísu efecto terapéutico. La isoenzima CYP3A4 es responsable deal menos una parte del metabolismo oxidativo de aproximadamente el 60% de los medicamentos disponibles, por lo que elritonavir es una fuente importante de interacciones farmacológicas. Describimos los fármacos cuyo uso está contraindicado o deben utilizarse con precauciones o sin ella cuando debeadministrase Paxlovid (nirmaltrevir más ritonavir), de acuerdocon cada ficha técnica vigente en la Agencia Española de Medicamentos y Productos Sanitarios (AU)

Eficacia en vida real del cambio a bictegravir/ emtricitabina/tenofovir alafenamida en pacientes previamente tratados con pautas triples que contienen rilpivirina / Real-world efficacy of switching to bictegravir/ emtricitabine/tenofovir alafenamide in pretreated patients with triple therapy containing rilpivirine

Objetivo. Analizar la eficacia y tolerabilidad de la estrategia de cambio desde regímenes basados en rilpivirina (RPV)a bictegravir/emtricitabina/tenofovir alafenamida (B/F/TAF) enla vida real.Métodos. Estudio unicéntrico, observacional y retrospectivo. Se seleccionaron pacientes que cambiaron de un régimencon RPV a B/F/TAF antes de febrero del 2020 analizándose losresultados después de 24 y 48 semanas. Se determinó el porcentaje que permanecía con carga viral indetectable, así comolos cambios en linfocitos CD4+, parámetros metabólicos y función renal.Resultados. Se incluyeron en el estudio 42 pacientes. 32de los 35 (91,4%) que completaron las 48 semanas de seguimiento tenían carga viral indetectable. El recuento de linfocitos CD4+ permaneció estable a las 24 y a las 48 semanas. Eltipo de análogos recibidos previamente no influyó en la respuestaConclusión. El cambio desde una triple terapia con RPV aB/F/TAF es una estrategia segura y eficaz en la vida real. (AU)

Objective. To analyze the efficacy and tolerability of thestrategy to change from rilpivirine (RPV) based regimens tobictegravir / emtricitabine / tenofovir alafenamide (B/F/TAF).Methods. Single-center, observational and retrospectivestudy. Patients who made the change to B/F/TAF before February 2020 were selected, analyzing the results after 24 and48 weeks. The percentage that remained with an undetectableviral load was determined, as well as the changes in CD4 +lymphocytes, metabolic parameters and renal function.Results. A total of 42 patients were included. Thirty-twoof the 35 patients (91.4%) who completed the 48 weeks offollow-up had an undetectable viral load. The CD4 + lymphocyte count remained stable at 24 and 48 weeks. The responseto B/F/TAF was not influenced by the two analogs previouslyreceived.Conclusion. Switching from triple therapy with RPV toB/F/TAF is a safe and effective strategy in real life. (AU)

Prevalencia y factores asociados con la presencia de criterios PIMDINAC en pacientes VIH de edad avanzada / Prevalence of PIMDINAC criteria and associated factors in elderly HIV patients

IntroducciónEl envejecimiento de la población infectada por VIH podría relacionarse con prescripciones de medicación potencialmente inadecuadas, interacciones medicamentosas y falta de adherencia terapéutica. Los criterios PIMDINAC buscan analizar conjuntamente estos problemas. El objetivo del estudio es determinar la prevalencia de los criterios PIMDINAC en una población VIH de edad avanzada.MétodosEstudio observacional, transversal y multicéntrico que incluyó pacientes mayores de 65 años en seguimiento farmacoterapéutico entre febrero-abril de 2020. La variable principal fue el porcentaje de cumplimiento de los criterios PIMDINAC.ResultadosSe incluyeron 47 pacientes, registrándose un PIMDINAC total en un 12,5%. De forma aislada, se detectó no adherencia al tratamiento concomitante en un 65,6% de los pacientes, medicación potencialmente inadecuada en un 48,9% e interacciones medicamentosas en un 25,2%. El número de fármacos y la polifarmacia se relacionaron con una mayor aparición de criterios PIMDINAC.ConclusiónLa prevalencia de criterios PIMDINAC en pacientes VIH de edad avanzada es elevada.

IntroductionAging of people living with HIV could be related to potentially inappropriate medication prescriptions, drugs interactions and lack of drugs adherence. PIMDINAC criteria seek to jointly analyze these problems. The objective of this study is to determine the prevalence of PIMDINAC criteria in an elderly HIV population.MethodsObservational, cross-sectional, multicenter study that included patients older than 65 years in pharmacotherapeutic follow-up between February-April 2020. The main endpoint was the percentage of PIMDINAC criteria identified in the study population.ResultsForty-seven patientes were included, identifying total PIMDINAC in 12.5%. Non-adherence to concomitant treatment was detected in 65.6% of patients, potentially inappropriate medication in 48.9% and drugs interactions in 25.2%. The number of concomitant drugs and polypharmacy were associated with a higher appearance of PIMDINAC criteria.ConclusionThe prevalence of PIMDINAC criteria in elderly HIV patients is high.

A farmacoterapia intra-hospitalar e as potenciais interações medicamentosas em pacientes geriátricos com fraturas

Objetivo: analisar o perfil da farmacoterapia intra-hospitalar quanto à ocorrência de polifarmácia, potenciais interações medicamentosas e prescrição de medicamentos potencialmente inapropriados em idosos hospitalizados por fraturas ósseas. No período de janeiro de 2019 a janeiro de 2020, com pacientes idosos internados por fraturas em qualquer segmento corporal, candidatos ao tratamento cirúrgico, que se encontravam em terapia farmacológica no Hospital Municipal de Imperatriz (HMI), Maranhão. Metodologia: as prescrições foram analisadas por meio do banco de dados Lexi-Interact® para identificar possíveis interações medicamentosas em potencial e os critérios de Beers atualizados em 2019 pela American Geriatrics Society para classificar os medicamentos potencialmente inapropriados. Para verificação de associações foram utilizados o teste de Qui-Quadrado e o teste exato de Fisher. Resultados: o estudo incluiu 29 participantes. A polifarmácia ocorreu em 75,8% dos pacientes. 25 pacientes (86,2%) faziam uso de pelo menos um medicamento potencialmente inapropriado para idosos. 45,3% das 115 potenciais interações medicamentosas possuíam ação deletéria sob a condição clínica do paciente. Conclusão: o perfil da farmacoterapia se caracterizou pela elevada taxa de polifar-mácia, prescrição de medicamentos potencialmente inapropriados pertencentes às classes farmacológicas dos AINEs, analgésico, antibiótico e protetor gástrico, que as potenciais interações medicamentosas foram de grande risco clínico em idosos com fraturas ósseas, cujo predomínio foi de fêmur. Espera-se contribuir para tomada de medidas em consenso para as prescrições de idosos e que outras pesquisas nessa abordagem sejam realizadas para endossar esses achados.

SUMMARY Aim: To evaluate the drug profile concerning occurrence of the polypharmacy, potential drug-drug interactions and potentially inappropriate medication prescribed to aging adults admitted for bone fractures. Cross-sectional, quantitative and analytical study, conducted in January 2019 to January of 2020 with patients attended for bone fractures in any body segment, candidates for surgical treatment, under drug therapy in the Hospital Municipal de Imperatriz (HMI), Maranhão. Methodology: The prescriptions were analyzed with the assistance of Lexi-Interact" database to verification potential drug-drug interactions and the Beers criteria updated in 2019 by the American Geriatrics Society to classify potentially inappropriate medications. The chi-square test and Fisher's exact test were used to verify associations. Results: A total of 29 geriatric patients were included in this study. The prevalence of polypharmacy was 75.8%. 25 patients (86.2%) used at least one medication potentially inappropriate for the aging adults. Of the 115 potential drug-drug interactions, 45.3% had a deleterious effect on the patient clinical condition. Conclusion: The frequency of polypharmacy, potential drug interactions with deleterious action on clinical condition, and prescription of potentially inappropriate medications for geriatric patients during hospitalization was high. The most prevalent pharmacological classes were NSAIDs, analgesic, antibiotic, and gastric protector. Proximal femur fractures were the most prevalent in this research. Thus, it is hoped to contribute to taking consensus measures for prescribing in this population.

Objetivo: analizar el perfil de la farmacoterapia intrahospitalaria en cuanto a la ocurrencia de polifarmacia, posibles interacciones medicamentosas y prescripción de medicamentos potencialmente inapropiados en ancianos hospitalizados por fracturas óseas. De enero de 2019 a enero de 2020, con ancianos hospitalizados por fracturas en cualquier segmento del cuerpo, candidatos a tratamiento quirúrgico, que estaban en tratamiento farmacológico en el Hospital Municipal de Imperatriz (HMI), Maranhão. Metodología: las recetas se analizaron utilizando la base de datos Lexi-Interact " para identificar posibles interacciones farmacológicas y los criterios de Beers actualizados en 2019 por la Sociedad Estadounidense de Geriatria para clasificar los fármacos potencialmente inapropiados. Para verificar las asociaciones se utilizó la prueba Chi-Cuadrado y la prueba exacta de Fisher. Resultados: el estudio incluyó a 29 participantes. La polifarmacia se presentó en el 75,8% de los pacientes. 25 (86,2%) pacientes utilizaban al menos un fármaco potencialmente inapropiado para ancianos. El 45,3% de las 115 posibles interacciones medicamentosas tuvo un efecto deletéreo sobre el estado clínico del paciente. Conclusión: el perfil farmaco-terapéutico se caracterizó por la alta tasa de polifarmacia, prescripción de medicamentos potencialmente inapropiados pertenecientes a las clases farmacológicas de los AINEs, analgésicos, antibióticos y protectores gástricos, las potenciales interacciones medicamentosas resultaron de gran riesgo clínico en ancianos con fracturas óseas. Las fracturas de fémur proximal fueron las más prevalentes en esta investigación. Se espera contribuir a la toma de medidas en consenso para las prescripciones de los ancianos y que se realicen más investigaciones en este enfoque para avalar estos hallazgos.

Prevalence of PIMDINAC criteria and associated factors in elderly HIV patients.

INTRODUCTION: Aging of people living with HIV could be related to potentially inappropiate medication prescriptions, drugs interactions and lack of drugs adherence. PIMDINAC criteria seek to jointly analyze these problems. The objective of this study is to determine the prevalence of PIMDINAC criteria in an elderly HIV population. METHODS: Observational, cross-sectional, multicenter study that included patients older than 65 years in pharmacotherapeutic follow-up between February-April 2020. The main endpoint was the percentage of PIMDINAC criteria identified in the study population. RESULTS: Forty-seven patientes were included, identifying total PIMDINAC in 12.5%. Non-adherence to concomitant treatment was detected in 65.6% of patients, potentially inappropiate medication in 48.9% and drugs interactions in 25.2%. The number of concomitant drugs and polypharmacy were associated with a higher appearance of PIMDINAC criteria. CONCLUSION: The prevalence of PIMDINAC criteria in elderly HIV patients is high.

Conciliación farmacoterapéutica al ingreso hospitalario en el Servicio de Guardia de Adultos / Medication reconciliation at hospital admission in an Adults Guard Service

Objetivo: Detectar los errores de conciliación terapéutica (EC) en pacientes adultos que asisten al Servicio de Guardia de Adultos (SGA) de una institución privada de tercer nivel de atención, describir su medicación de base y determinar la gravedad potencial de las discrepancias encontradas.Métodos: Se realizó un estudio observacional, descriptivo y prospectivo. Se relevó la medicación de pacientes mayores de 18 años ingresados al SGA, mediante anamnesis directa e indirecta. Posteriormente se comparó con las nuevas prescripciones a fin de detectar las posibles discrepancias. Los tipos de discrepancia y su gravedad potencial fueron clasificadas según la Nacional Coordinating Council for Medication Error Reporting and Prevention (NCCMERP).Resultados: Se conciliaron 100 pacientes, de los cuales el 71% presentó EC, con una media de 1,8 EC/paciente. El número total de medicamentos conciliados fue de 682, detectándose 324 discrepancias totales, 198 justificadas y 126 que requieren aclaración, consideradas EC. La mayoría de los EC fueron por omisión de medicamentos. Se identificaron 21 interacciones farmacológicas, siendo 12 clínicamente relevantes. La aceptación de las intervenciones por los médicos tratantes fue del 62%. La gravedad de los EC encontrados pudo incluirse en las categorías A-D.Conclusiones: La conciliación terapéutica realizada por el farmacéutico en el SGA evitó potenciales errores de medicación clínicamente relevantes y pone en evidencia la falta de exhaustividad en la recopilación de información sobre medicación domiciliaria del paciente. (AU)

Objective: To detect medication reconciliation errors (MRE) in adult patients attending the Adults Guard Service of a private third-level hospital; describe their basic medication and determine the potential severity of the discrepancies found.Methods: An observational, descriptive and prospective study was carried out. The medication of patients older than 18 years admitted in the adults guard service was relieved, through direct and indirect anamnesis. Subsequently, it was compared with the new prescriptions in order to detect possible discrepancies. The types of discrepancies and their potential severity were classified according to the National Coordinating Council for Medication Error Reporting and Prevention (NCCMERP).Results: 100 patients were reconciled, of which 71% presented MRE, with a mean of 1.8 MRE/patient. The total number of reconciled medications was 682, detecting 324 total discrepancies, 198 justified and 126 requiring clarification, which were considered reconciliation errors. Most of the MRE were due to medication omissions. In addition, 21 pharmacological interactions were identified, being 12 clinically relevant. Acceptance of interventions by treating physicians was 62%. The severity of the MRE could be included in categories A-D.Conclusions: The intervention of the pharmacist avoided potential MRE and highlights the lack of exhaustiveness in collecting information of the patient’s home medication. (AU)

Uso concomitante de antivirales de acción directa (AAD) y fármacos con acción sobre el sistema nervioso central: Consideraciones en el perfil actual del paciente con hepatitis C / Concomitant use of direct-acting antivirals (DAA) and central nervous system drugs in patients with hepatitis C virus infection

El objetivo fue determinar las potenciales interacciones farmacológicas (IF) entre los antivirales de acción-directa pangenotípicos (AADp)y la medicación-concomitante sobre el sistema nervioso central (SNC)asociada a los pacientes portadores del virus de la hepatitis C crónica(VHC). Se realizó un diseño transversal. Se incluyeron pacientes ≥18años en tratamiento con AADp durante el año 2017. Las variables recogidas fueron: comorbilidad, medicación-concomitante (SNC) y potenciales IF. Los AADp analizados fueron: a) Sofosbuvir/Velpatasvir(SOF/VEL), b) Glecaprevir/Pibrentasvir (GLE/PIB) y c) Sofosbuvir/Velpatasvir/Voxilaprevir (SOF/VEL/VOX). Análisis-estadístico descriptivo. Se reclutaron 1.170 pacientes; edad-media de 60,1 años y el 56,4%varones. El promedio de medicamentos-concomitantes fue de 3,2 porpaciente/año. El porcentaje de potenciales/posibles IF entre los AADpy los medicamentos-concomitantes sobre el SNC fueron: 2,7% contraindicaciones, 11,3% significativas y 4,2% débiles. En función de los AADp,estos porcentajes fueron los siguientes: SOF/VEL (2,7%; 0,0%; 4,4%),GLE/PIB (2,7%; 26,5%; 1,6%) y SOF/VEL/VOX (2,7%; 6,8%; 4,4%),respectivamente. Un tercio de los pacientes con VHC muestran un usode medicación-concomitante de acción sobre el SNC. Será importanteseleccionar un AADp que tenga una baja tasa de potenciales IF para simplificar el tratamiento. SOF/VEL se presenta como una buena alternativa en comparación con los AADp seleccionados, principalmente en eluso concomitante de antipsicóticos y analgésicos. (AU)

Our objective was to determine potential drug interactions (DI) between pangenotypic direct-acting antivirals (pDAA) and concomitantcentral nervous system (CNS) medication in patients with chronichepatitis C virus (HCV). Transversal design. Patients aged ≥ 18 yearson treatment with pDAA during 2017 were included. The variablescollected were comorbidity, concomitant CNS medication and potential DI. The pDAA analyzed were a) Sofosbuvir/Velpatasvir (SOF/VEL), b) Glecaprevir/Pibrentasvir (GLE/PIB) and c) Sofosbuvir/Velpatasvir/Voxilaprevir (SOF/VEL/VOX). Descriptive statisticalanalysis. We recruited 1,170 patients (mean age 60.1 years, 56.4%male). Mean concomitant drug use was 3.2 per patient/year. Thepercentages of potential / possible DI between the DAAs and theconcomitant drugs on the CNS were: 2.7% contraindications, 11.3%significant and 4.2% weak. By pDAA, the percentages were: SOF/VEL(2.7%; 0.0%; 4.4%), GLE/GDP (2.7%; 26.5%; 1.6%) SOF/VEL/VOX(2.7%; 6.8%; 4.4%), respectively. Concomitant CNS medication wasused in one third of HCV patients. It is important to select a pDAAwith a low rate of potential DI to simplify treatment. SOF/VEL is agood alternative compared with the other pDAA studied, mainly dueto the concomitant use of antipsychotics and analgesics. (AU)