Potentially inappropriate prescriptions in geriatric patients hospitalized in the internal medicine department of a referral hospital in Mexico.

BACKGROUND: Potentially inappropriate prescription (PIP) constitutes a risk for the development of adverse effects of a drug that outweigh its benefits, which can be considered inappropriate medication use. OBJECTIVE: To describe the prevalence of PIP in geriatric patients hospitalized at the internal medicine department of a referral hospital in Mexico. MATERIAL AND METHODS: Cross-sectional, descriptive design, with simple allocation of medical records from patients older than 65 years hospitalized between January 2016 and August 2017. The STOPP/START criteria were applied to identify the number of PIPs, the number of prescribed medications, number and type of comorbidities, as well as days of hospital stay. RESULTS: A prevalence of PIP of 73.3% was identified, with main comorbidities being hypertension and type 2 diabetes mellitus. A total of 1,885 prescribed medications were quantified; mean hospital stay was 6.3 days. CONCLUSIONS: A high prevalence of PIP was identified in hospitalized geriatric patients, hence the importance of applying the STOPP/START criteria and of the role of the pharmacist for validating the prescription prior to drug administration.

ANTECEDENTES: Una prescripción potencialmente inapropiada (PPI) constituye un riesgo de presentar efectos adversos por un fármaco que superan los beneficios de este, pudiendo considerarse como uso inadecuado de medicamentos. OBJETIVO: Describir la prevalencia de prescripciones potencialmente inapropiadas en pacientes geriátricos hospitalizados en el servicio de medicina interna de un hospital de referencia en México. MATERIAL Y MÉTODOS: Diseño descriptivo transversal, con asignación simple de expedientes clínicos de pacientes hospitalizados mayores de 65 años, entre enero de 2016 y agosto de 2017. Se aplicaron los criterios STOPP y START para identificar el número de PPI, cantidad de medicamentos prescritos, presencia, cantidad y tipo de comorbilidades, así como días de estancia hospitalaria. RESULTADOS: Se encontró una prevalencia de 73.3 % de PPI y las principales comorbilidades fueron hipertensión arterial y diabetes mellitus tipo 2. Se cuantificaron 1885 medicamentos prescritos; la estancia hospitalaria media fue de 6.3 días. CONCLUSIONES: Se identificó alta prevalencia de PPI en los pacientes geriátricos hospitalizados, de ahí la importancia de aplicar los criterios STOPP y START y del papel del farmacéutico en la validación de la prescripción antes de la administración de medicamentos.

Prescripciones potencialmente inapropiadas en pacientes geriátricos hospitalizados en el servicio de medicina interna en un hospital de referencia en México / Potentially inappropriate prescriptions in geriatric patients hospitalized in the internal medicine department of a referral hospital in Mexico

Resumen Antecedentes: Una prescripción potencialmente inapropiada (PPI) constituye un riesgo de presentar efectos adversos por un fármaco que superan los beneficios de este, pudiendo considerarse como uso inadecuado de medicamentos. Objetivo: Describir la prevalencia de prescripciones potencialmente inapropiadas en pacientes geriátricos hospitalizados en el servicio de medicina interna de un hospital de referencia en México. Material y métodos: Diseño descriptivo transversal, con asignación simple de expedientes clínicos de pacientes hospitalizados mayores de 65 años, entre enero de 2016 y agosto de 2017. Se aplicaron los criterios STOPP y START para identificar el número de PPI, cantidad de medicamentos prescritos, presencia, cantidad y tipo de comorbilidades, así como días de estancia hospitalaria. Resultados: Se encontró una prevalencia de 73.3 % de PPI y las principales comorbilidades fueron hipertensión arterial y diabetes mellitus tipo 2. Se cuantificaron 1885 medicamentos prescritos; la estancia hospitalaria media fue de 6.3 días. Conclusiones: Se identificó alta prevalencia de PPI en los pacientes geriátricos hospitalizados, de ahí la importancia de aplicar los criterios STOPP y START y del papel del farmacéutico en la validación de la prescripción antes de la administración de medicamentos.

Abstract Background: Potentially inappropriate prescription (PIP) constitutes a risk for the development of adverse effects of a drug that outweigh its benefits, which can be considered inappropriate medication use. Objective: To describe the prevalence of PIP in geriatric patients hospitalized at the internal medicine department of a referral hospital in Mexico. Material and methods: Cross-sectional, descriptive design, with simple allocation of medical records from patients older than 65 years hospitalized between January 2016 and August 2017. The STOPP/START criteria were applied to identify the number of PIPs, the number of prescribed medications, number and type of comorbidities, as well as days of hospital stay. Results: A prevalence of PIP of 73.3% was identified, with main comorbidities being hypertension and type 2 diabetes mellitus. A total of 1,885 prescribed medications were quantified; mean hospital stay was 6.3 days. Conclusions: A high prevalence of PIP was identified in hospitalized geriatric patients, hence the importance of applying the STOPP/START criteria and of the role of the pharmacist for validating the prescription prior to drug administration.

Impact of Pharmaceutical Education on Medication Adherence and Its Clinical Efficacy in Patients with Type 2 Diabetes and Systemic Arterial Hypertension.

Purpose: To evaluate the impact of pharmaceutical education on medication adherence in patients with Type 2 Diabetes and Systemic Arterial Hypertension. Patients and Methods: This randomized clinical trial enrolled patients with a diagnosis of Type 2 Diabetes Mellitus and Systemic Arterial Hypertension treated in an internal medicine outpatient clinic of a teaching hospital. One hundred and three patients were randomly assigned to the study groups; 51 to the control group and 52 to the intervention group with a 6 months follow-up. Medication adherence was assessed using the Morisky 8-item medication adherence scale. To improve patient adherence to treatment, a wallet card was provided with an up-to-date list of prescribed medications along with recommendations for follow-up care. Results: One hundred and seventy-nine patients were screened for eligibility, of which 103 (57.5%) participated in the study. The intervention group showed a statistically significant decrease in capillary glucose levels, glycated hemoglobin, systolic and diastolic blood pressure, total cholesterol and triglycerides compared to the control group. The frequencies on medication adherence levels at 3 and 6 months in the control group remained similar to baseline, while in the intervention group the frequency of high adherence increased significantly at 6 months (8.7% to 43.5%). Conclusion: A high percentage of patients are not achieving optimal control of their diabetes. Medication adherence rates were between 45-50% in patients at the baseline of the study, but after receiving education and support from a pharmacist, the intervened group showed a significant increase in their adherence.

A study of medication errors during the prescription stage in the pediatric critical care services of a secondary-tertiary level public hospital.

BACKGROUND: Medication Errors (MEs) are considered the most common type of error in pediatric critical care services. Moreover, the ME rate in pediatric patients is up to three times higher than the rate for adults. Nevertheless, information in pediatric population is still limited, particularly in emergency/critical care practice. The purpose of this study was to describe and analyze MEs in the pediatric critical care services during the prescription stage in a Mexican secondary-tertiary level public hospital. METHODS: A cross-sectional study to detect MEs was performed in all pediatric critical care services [pediatric emergency care (PEC), pediatric intensive care unit (PICU), neonatal intensive care unit (NICU), and neonatal intermediate care unit (NIMCU)] of a public teaching hospital. A pharmacist identified MEs by direct observation as the error detection method and MEs were classified according to the updated classification for medication errors by the Ruíz-Jarabo 2000 working group. Thereafter, these were subclassified in clinically relevant MEs. RESULTS: In 2347 prescriptions from 301 patients from all critical care services, a total of 1252 potential MEs (72%) were identified, and of these 379 were considered as clinically relevant due to their potential harm. The area with the highest number of MEs was PICU (n = 867). The ME rate was > 50% in all pediatric critical care services and PICU had the highest ME/patient index (13.1). The most frequent MEs were use of abbreviations (50.9%) and wrong speed rate of administration (11.4%), and only 11.7% of the total drugs were considered as ideal medication orders. CONCLUSION: Clinically relevant medication errors can range from mild skin reactions to severe conditions that place the patient's life at risk. The role of pharmacists through the detection and timely intervention during the prescription and other stages of the medication use process can improve drug safety in pediatric critical care services.

Pilot study: Evaluation of potential drug-drug interactions in hospitalized pediatric patients.

PURPOSE: Evaluate the type and severity of potential drug-drug interactions and identify risk factors involved, in pediatric patients admitted in a hospital setting. METHODS: Transversal retrospective analytical study was carried out with hospitalized pediatric patients from a Hospital in the West of Mexico, second and third level. The patients included were ≤18 years old hospitalized in the children wards; those admitted at the emergency room, neonatal intermediate and intensive therapy units were not included. Medical prescriptions were reviewed taking into consideration anthropometric characteristics, diagnosis and number of drugs prescribed to identify potential drug-drug interactions using Micromedex 2.0 database. RESULTS: 88 patients were included, an average of 4.6 ± 2.8 of drugs were prescribed per patient. 37 subjects (42%) presented some degree of potential drug-drug interactions of which 25.5% were major and 27.7% moderate according to the software. Identified risk factors were: age ≥ 4 years (OR 1.917; 95% CI 1.081-3.399), BSA ≥ 0.8m2(OR 1.825; 95% CI 1.021-3.263), height ≥ 1 m (OR 2.556;95% CI 1.322 - 4.941), and number of prescribed medications ≥ 4 (OR 2.106;95% CI 1.248 - 3.556). CONCLUSION: Some of the interactions found were for the benefit of the patient, but others were considered undesirable because they altered the pharmacokinetics of some of the medications administered. Detecting in time the harmful interactions for a patient may favor the patient's safety.

Improved drug safety through intensive pharmacovigilance in hospitalized pediatric patients.

BACKGROUND: The aim of this study was to detect and analyze Adverse Drug Reactions (ADRs) through Intensive Pharmacovigilance (IPV) in hospitalized pediatric patients to improve drug safety. METHODS: A prospective 6-month cross-sectional study was performed in the pediatric service of a regional hospital in Mexico in order to assess hospitalized children from 1 day to 18 years old. The inclusion criteria were: both genders, all hospitalization causes, and at least one prescribed medication (indistinct drug group). Notifications were performed through medical visits, phone calls, or spontaneous reports. ADR suspicions were assessed with severity scales: Naranjo algorithm, Schumock & Thornton and Hartwig and Siegel. RESULTS: From a total of 1083 hospital admissions, 19 ADRs were recorded. The average age of patients in years was 7.2 (±5.9). The causality assessment in this study showed that most of the ADRs were probable (68.4%) and 4 certain (8.2%); causality was mainly attributed to antibiotics (AB) and an antiepileptic drug. We found a relationship of AB with ADRs (p < 0.05) with an increased risk at the third day of prescription (p < 0.05). The average severity was level 2 and 21% were classified as "preventable". Lastly, an increase in hospital stay associated with ADRs (p < 0.05) and with concomitant medications (p < 0.05), was also found. The most severe ADRs were hemolysis and toxic epidermal necrolysis. CONCLUSIONS: IPV was an effective tool for ADR prevention, detection, and treatment in hospitalized patients. The intensive monitoring approach in pharmacovigilance amplifies ADR detection and this translates into the improvement of drug safety in children.

Antifungal activity of caspofungin in experimental infective endocarditis caused by Candida albicans

BACKGROUND Infective endocarditis is a disease characterised by heart valve lesions, which exhibit extracellular matrix proteins that act as a physical barrier to prevent the passage of antimicrobial agents. The genus Candida has acquired clinical importance given that it is increasingly being isolated from cases of nosocomial infections. OBJECTIVE To evaluate the activity of caspofungin compared to that of liposomal amphotericin B against Candida albicans in experimental infective endocarditis. METHODS Wistar rats underwent surgical intervention and infection with strains of C. albicans to develop infective endocarditis. Three groups were formed: the first group was treated with caspofungin, the second with liposomal amphotericin B, and the third received a placebo. In vitro sensitivity was first determined to further evaluate the effect of these treatments on a rat experimental model of endocarditis by semiquantitative culture of fibrinous vegetations and histological analysis. FINDINGS Our semiquantitative culture of growing vegetation showed massive C. albicans colonisation in rats without treatment, whereas rats treated with caspofungin showed significantly reduced colonisation, which was similar to the results obtained with liposomal amphotericin B. CONCLUSIONS The antifungal activity of caspofungin is similar to that of liposomal amphotericin B in an experimental model of infective endocarditis caused by C. albicans.

Antifungal activity of caspofungin in experimental infective endocarditis caused by Candida albicans.

BACKGROUND: Infective endocarditis is a disease characterised by heart valve lesions, which exhibit extracellular matrix proteins that act as a physical barrier to prevent the passage of antimicrobial agents. The genus Candida has acquired clinical importance given that it is increasingly being isolated from cases of nosocomial infections. OBJECTIVE: To evaluate the activity of caspofungin compared to that of liposomal amphotericin B against Candida albicans in experimental infective endocarditis. METHODS: Wistar rats underwent surgical intervention and infection with strains of C. albicans to develop infective endocarditis. Three groups were formed: the first group was treated with caspofungin, the second with liposomal amphotericin B, and the third received a placebo. In vitro sensitivity was first determined to further evaluate the effect of these treatments on a rat experimental model of endocarditis by semiquantitative culture of fibrinous vegetations and histological analysis. FINDINGS: Our semiquantitative culture of growing vegetation showed massive C. albicans colonisation in rats without treatment, whereas rats treated with caspofungin showed significantly reduced colonisation, which was similar to the results obtained with liposomal amphotericin B. CONCLUSIONS: The antifungal activity of caspofungin is similar to that of liposomal amphotericin B in an experimental model of infective endocarditis caused by C. albicans.

Cadmium and α-lipoic acid activate similar de novo synthesis and recycling pathways for glutathione balance.

Glutathione (GSH) protects cells against oxidative stress. Redox modifiers induce GSH biosynthesis and recycling to maintain reduced environment inside cells. Cadmium (Cd2+) is a heavy metal that activates redox-sensitive transcriptional factors. The antioxidant α-lipoic acid (ALA) has shown to modulate GSH pathways. This study aimed to investigate de novo synthesis and recycling pathways for GSH balance by different Cd2+ concentrations and ALA in HepG2 cells. ALA activates Nrf2 pathway leading to GSH increment. Pre-treatment with 1µM Cd2+ or ALA produces tolerance to 5µM Cd2+ toxic effects. 5µM Cd2+ exposure significantly augmented nuclear Nrf2, GSH and GCLC, GCLM, HMOX1, TNFα and IL-6 mRNA expression but not GSR, however these upsurges were significantly abrogated by ALA or 1µM Cd2+ pre-treatments. Exposure to low Cd2+ concentration generate timely protective responses, similar to that elicited by ALA, maintaining a normal redox balance inside the cell due to GSH replenishment.

Alpha-lipoic acid regulates heme oxygenase gene expression and nuclear Nrf2 activation as a mechanism of protection against arsenic exposure in HepG2 cells.

Oxidative stress is a known mechanism induced, among other things, by arsenic toxicity. As a response, the cell triggers the synthesis of antioxidant and stress response elements like glutathione and heme oxygenase. Alpha-lipoic acid (ALA) is a well-known antioxidant that confers protection to oxidative stress conditions. We analyzed the effect of ALA pretreatment on Nrf2-responsive gene expression of HepG2 cells exposed to As(3+). Cells were treated with 5mM ALA and 8h later exposed to 50µM As(3+) for 24h, analyzing MTT-activity, glutathione content, Nrf2 induction and antioxidant gene expression. As(3+) increased glutathione (154%), heme oxygenase, glutamate cystein ligase, modifier subunit and metallothionein (35-fold, 10-fold and 9-fold, respectively). ALA prevented the strong expression of heme oxygenase by As(3+) exposure (from 35- to 5-times of control cells), which correlated with the reduction of Nrf2 observed in As(3+) group. ALA pretreatment can down-modulate the response mediated by Nrf2 and provide protection to As(3+) exposed HepG2 cells.