Parches transdérmicos anticonceptivos: evaluación de tecnología sanitaria / Contraceptive transdermal patches: health technology assessment

INTRODUCCIÓN: La anticoncepción es un derecho, y es obligación del Estado garantizar el acceso a métodos anticonceptivos efectivos, seguros y de calidad. Se realizó una evaluación de tecnología sanitaria sobre los parches anticonceptivos transdérmicos. MÉTODOS: Un equipo multidisciplinario e independiente designado por el Comité Provincial de Biotecnologías de Neuquén buscó información epidemiológica, regulatoria y evidencias científicas sobre eficacia, seguridad y adherencia. Se analizó y sistematizó siguiendo metodología GRADE (Grading of Recommendations Assessment, Development and Evaluation) y CASPe (Critical Appraisal Skills Programme Español). RESULTADOS: El único parche autorizado en Argentina para su comercialización libera 33,9 µg/día de etinilestradiol y 203 µg/día de norelgestromina. Su prospecto en Argentina, EE.UU. y Europa lo asocia al doble de riesgo de enfermedad tromboembólica venosa si se compara con las píldoras anticonceptivas que provee el Estado. Esto coincide con resultados de estudios de cohortes de alta calidad. Los parches proveen similar eficacia anticonceptiva a corto plazo, pero con altas tasas de abandono en el seguimiento. La Organización Mundial de la Salud no los ha incluido en su listado de medicamentos esenciales. Los parches son más costosos que otros métodos disponibles. DISCUSIÓN: Sobre la base de los principios de beneficencia, no maleficencia, de precaución y de proporcionalidad, no se recomienda la incorporación de parches.(AU)

INTRODUCTION: Contraception is a right, being an obligation of the State to guarantee access to effective, safe and quality contraceptive methods. A health technology assessment was carried out on transdermal contraceptive patches. METHODS: A multidisciplinary and independent team appointed by the Provincial Biotechnology Committee of Neuquén searched for epidemiological and regulatory information and scientific evidence on efficacy, safety and adherence. It was analyzed and systematized following the GRADE (Grading of Recommendations Assessment, Development and Evaluation) and CASPe (Critical Appraisal Skills Programme Español) methodology. RESULTS: The only patch authorized for commercialization in Argentina releases 33.9 µg/day of ethinylestradiol and 203 µg/day of norelgestromin. Its package insert in Argentina, the US and Europe highlights that the risk of venous thromboembolic disease is twice as high compared to the contraceptive pills provided by the State. This is consistent with results from high-quality cohort studies. Patches provide similar short-term contraceptive efficacy, but with high dropout rates at follow-up. The World Health Organization has not included them in its list of essential medicines. Patches are more expensive than other available methods. DISCUSSION: Based on the principles of beneficence, non-maleficence, precaution and proportionality, the incorporation of patches is not recommended.(AU)

Exploración de la eficacia analgésica de dos parches transdérmicos analgésicos de opioides, buprenorfina y fentanilo, según sus variaciones de dosis en el control del dolor en pacientes paliativos oncológicos / Exploration of the analgesic efficacy of two-transdermal analgesic patches of opioids, buprenorphine and fentanyl, according to their dose variations in pain control in palliative cancer patients

Objetivo: El presente trabajo de investigación tuvo como objetivo explorar la eficacia analgésica mediante la comparación de la respuesta analgésica de los parches transdérmicos (PTD) de buprenorfina y fentanilo en dolor oncológico y patrón de uso. Material y Método: Se obtuvieron los datos y variables desde los registros clínicos de pacientes ingresados a la Unidad de Cuidados Paliativos (UCP) del Instituto Nacional del Cáncer (INC) que estaban bajo tratamiento en mayo del 2017. Se incluyó en este estudio a 78 pacientes con PTD, que representan el 13% de los pacientes en control mensual. De estos, 66 estaban bajo tratamiento con buprenorfina y 8 bajo tratamiento con fentanilo. Resultados: Los resultados mostraron que el PTD de buprenorfina se utiliza más frecuentemente que el de fentanilo. El principal motivo de rotación fue dolor no controlado, seguido por imposibilidad de contar con la administración por vía oral. En pacientes con mayores intensidades de dolor somático o visceral se indicó fentanilo y en aquellos con componente neuropático se prefirió el uso de buprenorfina. PTD de fentanilo fue indicado en dosis mayores que buprenorfina, incluso al comparar sus dosis equianalgésicas, siendo la variación de dosis alta para ambos parches: aumentó en promedio 257%. Se logró una mejor respuesta analgésica con buprenorfina, con una variación de intensidad de escala numérica verbal (ENV) de 2,94 y 1,88 puntos de promedio para buprenorfina y fentanilo, respectivamente. Adicionalmente, se presentó mayor reacción local dérmica con fentanilo. Conclusiones: Se evidenció diferencias en patrón de uso y, a diferencia de lo esperado, se obtuvo una mejor eficacia analgésica con buprenorfina. Datos que deben ser corroborados en estudios con mayor número de pacientes bajo tratamiento con fentanilo.

Objective: This study aims to explore analgesic efficacy comparisons of buprenorphine and fentanyl transdermal patches (TDP) in cancer pain and it's usage pattern. Material and Method: Data and variables were collected from patient's clinical reports who were admitted in the National Cancer Institute's (NCI) Palliative Care Unit (PCU) and were under treatment with TDP in May 2017. 78 TDP patients were studied and represented 13% of the monthly control patients in the PCU. Of these, 66 were under buprenorphine treatment and 8 under fentanyl treatment. Results: The results showed that buprenorphine TDP is more frequently used than fentanyl TDP, and the main reason for exchange between them was uncontrolled pain, followed by oral administration impossibility. Fentanyl TDP was indicated in patients with higher somatic or visceral pain intensities and Buprenorphine TDP was preferred in patients with neuropathic pain. Fentanyl TDP was indicated in higher doses than buprenorphine, even when comparing its equianalgesic doses, the dose variation was high for both patches throughout the treatment: it increased on average by 257%. A better analgesic response was achieved with buprenorphine, with a variation of intensity of the Verbal Numerical Scale (VNS) of 2.94 and 1.88 average points, for buprenorphine and fentanyl respectively. Additionally, there was a higher local dermal reaction with fentanyl TDP. Conclusions: Differences in usage patterns were evidenced and, unlike what was expected, better analgesic efficacy was obtained with buprenorphine TDP. This data should be corroborated in receiving fentanyl treatment.

Eficacia analgésica del EMLA en procedimientos transcutáneos. Revisión sistemática / Analgesic efficacy of EMLA in transcutaneous procedures. Systematic review

Los parches de EMLA son frecuentemente utilizados como anestésicos locales durante la realización en procedimientos invasivos. Con el fin de valorar su eficacia y compararla con la de otros analgésicos y anestésicos disponibles, se realizó una revisión sistemática de todos los estudios realizados que cumplieran criterios de inclusión entre los años 1990 y 2019. Población y métodos: la búsqueda bibliográfica de la evidencia disponible fue realizada en las bases de datos de Cochrane Medline y Lilacs. Se incluyeron todos los ECA y revisiones sistemáticas en pacientes menores de 16 años entre los años 1990 y 2019. Resultados: Fueron hallados 31 artículos de los cuales 21 cumplían con los criterios de inclusión. De dichos 21, solamente 8 estudios resultaron de muy buena y excelente calidad metodológica (JADAD). Conclusiones: El EMLA demostró mayor eficacia como analgésico en el 100% de los estudios donde se comparaba respecto del placebo. Sin embargo, no se encontraron diferencias significativas respecto de otros analgésicos farmacológicos y no farmacológicos.(AU)

EMLA patches are commonly used as local anesthetics in minor invasive procedures. To assess efficacy and compare the patches with other available analgesics and anesthetics, a systematic review was conducted evaluated all studies that met the inclusion criteria published between 1990 and 2019. Population and methods: A literature search of the available evidence was conducted in the Cochrane, Medline, and Lilacs databases. All RCTs and systematic reviews in patients younger than 16 years published between 1990 and 2019 were included. Results: 31 articles were identified of which 21 met the inclusion criteria. Of these 21, of only 8 studies the methodology was of very good and excellent quality (JADAD). Conclusions: EMLA better efficacy as an analgesic in 100% of the studies comparing EMLA patches with placebo. However, no significant differences were found when comparing the patches with other pharmacological and non-pharmacological analgesics.(AU)

Multicenter Adherence Study of Asthma Medication for Children in Korea

PURPOSE: Adherence is a major component of successful medical treatment. However, non-adherence remains a barrier to effective delivery of healthcare worldwide. METHODS: Twenty healthcare facilities (secondary or tertiary hospitals) belonging to the Korean Academy of Pediatric Allergy and Respiratory Diseases (KAPARD) participated. Questionnaires were given to patients currently receiving treatment in the form of inhalant useor oral intake or transdermal patch for mild to moderate asthma. RESULTS: A total of 1,838 patients responded to the questionnaire. Mean age was 5.98 ± 3.79 years (range: 0-18 years). With help from their caregivers, the percentage of patients that answered “taking as prescribed” was 38.04% for inhalant users, 50.09% for oral medication users and 67.42% for transdermal users. Transdermal patch users had significantly greater adherence compared to the other 2 groups (P < 0.001). The 34.15% of inhalant users, 70.33% of oral medication users and 93.00% of transdermal patch users felt that their medication delivery system was “Easy” or “Very easy” to use (P < 0.001). “Method of administration” was deemed to be the most difficult part of the treatment regimen to follow, and 76.7% of patients preferred once-daily administration (i.e., “Frequency of administration”). CONCLUSIONS: Asthma medication adherence in young children was found to be better in the transdermal patch group. This may be due to requiring fewer doses and easy to follow instructions. From an adherence point of view, the transdermal patch seems more useful for long-term asthma control in children compared to oral or inhaled medicine.

Influence of different formulation variables on the performance of transdermal drug delivery system containing tizanidine hydrochloride: in vitro and ex vivo evaluations

The present study was aimed at preparation of transdermal patches of tizanidine HCl, evaluation of the effect of polymers on in vitro release pattern of the drug, and the effect of permeation enhancers on the penetration of the drug through the rabbit skin. Various proportions of hydrophilic (HPMC) and hydrophobic (Eudragit L-100) polymers were used with PEG 400 as film-forming agent, and Span 20 or DMSO as permeation enhancer. The formulations were assessed for physicochemical characteristics and in vitro drug release studies using USP paddle over disc method in phosphate buffered saline (pH 7.4) at 32.0±1°C. On the basis of in vitro studies and physicochemical evaluations, S03-A and S04-A were selected at Eudragit : HPMC ratios of 8 : 2 and 7 : 3, respectively, for further ex vivo analysis. The effects of different concentrations of Span 20 and DMSO were evaluated on excised rabbit skin using Franz diffusion cell. Cumulative drug permeation, flux, permeability coefficient, target flux, and enhancement ratio were calculated and compared with the control formulations. Kinetic models and Tukey's multiple comparison test were applied to evaluate the drug release patterns. Formulation SB03-PE containing Eudragit L-100:HPMC (7:3) with Span 20 (15% w/w) produced the highest enhancement in drug permeation, and followed zero order kinetic model with super case-II drug release mechanism.

Double blind randomized control trial to evaluate the efficacy of ketoprofen patch to attenuate pain during venous cannulation

BACKGROUND: Venipuncture pain is an uncomfortable suffering to the patient. It creates anxiety, fear and dissatisfaction. The ketoprofen transdermal patch is a proven treatment for musculoskeletal and arthritic pain. We planned this study to evaluate the efficacy of the ketoprofen patch to reduce venipuncture pain. METHODS: Two hundred adult patients, aged 18–60 years, of either sex, ASA grade I or II, were enrolled. Presuming that therapy would decrease venipuncture pain by 30%, a power calculation with α = 0.05 and β = 0.80 required enrollment of at least 24 patients into each group. However, 100 patients in each group were recruited. Group I (Control) received a placebo patch; Group II (Ketoprofen) received a 20 mg ketoprofen patch. A selected vein on the dorsum of the patient's non-dominant hand was cannulated with 18 g intravenous cannula 1 h after the application of the respective patch. Assessment of pain was done by a 10 cm visual analogue scale (VAS) of 0–10, where 0 depicts “no pain” and 10 is “the worst imaginable pain”. The venipuncture site was assessed for the presence of skin erythema, swelling and rashes at 12 h, 24 h and at the time of decannulation. RESULTS: Incidence of pain was 100% (94/94) in the control group as compared to 93% (85/91) in the ketoprofen group. The severity of the venipuncture pain was 6 (2) and 2 (2) for control and ketoprofen groups respectively (P < 0.05). CONCLUSIONS: Application of a ketoprofen patch at the proposed site of venipuncture one hour before the attempt is effective and safe for attenuating venipuncture pain.

Effectiveness of lidocaine patches for pain treatment after total knee arthroplasty / Eficácia do tratamento adjuvante da dor pós-artroplastia total do joelho utilizando emplastros com lidocaína

BACKGROUND: Effective analgesic therapy in the postoperative period of total knee arthroplasty is essential for good surgical outcomes. The current trend is to use multimodal treatment, in which the use of patches with lidocaine as adjuvant therapy has an increasingly relevant role. OBJECTIVE: To investigate the potential benefits of lidocaine patch association with the basic analgesia regimen for pain relief during the postoperative period of total knee arthroplasty. METHOD: A retrospective cohort study was performed , with a total of 24 patients in each group, who underwent total knee arthroplasty. Pain levels using a visual analogue scale and opioid intake were controlled from the immediate postoperative to the end of a 28-day interval. RESULTS: During the postoperative period, pain was less intense in patients who used lidocaine patches. In these same patients, the doses of opioids needed to control pain were lower in 15 of the 28 days analyzed. The relative frequency of nausea was higher in the group that did not use adjuvant therapy. Patients older than 70 years and females predominated. CONCLUSION: Adjuvant treatment after total knee arthroplasty using lidocaine patches was effective in reducing pain and decreasing the use of opioids in the period analyzed, and represents a good addition to multimodal analgesic therapy.

OBJETIVO: A terapia analgésica eficaz no pós-operatório de artroplastia total do joelho é imprescindível para bons resultados cirúrgicos. A tendência atual é a de se utilizar o tratamento multimodal, no qual a utilização de emplastros com lidocaína como terapia adjuvante tem papel crescente e relevante. Investigar os potenciais benefícios da associação do emplastro com lidocaína ao esquema terapêutico básico de analgesia para o alívio da dor durante o período pós-operatório de artroplastia total de joelho. MÉTODO: Foi realizado um estudo de coorte retrospectivo cuja população foi a de pacientes submetidos a artroplastia total do joelho, divididos em dois grupos com 24 integrantes em cada, acompanhados por um período de 28 dias. RESULTADOS: Durante o pós-operatório analisado a dor foi menos intensa nos pacientes que utilizaram os emplastros com lidocaína. Nesses mesmos pacientes, as doses de opióides necessárias para controlar a dor foram menores em 15 dos 28 dias analisados. A frequência relativa de náuseas foi maior no grupo que não utilizou a terapia adjuvante. Predominaram os pacientes com mais de 70 anos e o gênero feminino. CONCLUSÃO: O tratamento adjuvante após a artroplastia total do joelho utilizando emplastros com lidocaína mostrou ser eficaz na redução da dor e diminuição do uso de opióides no período analisado, constituindo um bom incremento para a terapia analgésica multimodal.

Terapia de reemplazo de nicotina / Nicotine replacement therapy

Resumen Todas las formas comercialmente disponibles de terapia de reemplazo de nicotina (TRN) (chicles, parche transdérmico, aerosol nasal, inhalador y tabletas sublinguales / lozenges) pueden ayudar a de dejar de fumar con éxito. TRN aumenta la tasa cesación en un 50 a 70%. La combinación de un parche de nicotina con una forma de administración rápida de TRN es más eficaz que un solo tipo de NRT. No hay diferencia en la eficacia entre TRN y bupropión, la combinación de NRT y bupropión es más efectiva que bupropión solamente. Los efectos de TRN son en gran parte independientes de la duración de la terapia, la intensidad del apoyo prestado o lugar en el que se ofreció. Según expertos chilenos, se puede usar TRN en adolescentes, en forma de chicles de 2 mg asociado a terapia conductual. Si una embarazada expresa un claro deseo de recibir TRN, se sugiere (i) discutir con ella los riesgos y beneficios asociados, (ii) utilizarla sólo si falla la cesación con medidas no farmacológicas y (iii) utilizar el criterio profesional al decidir si ofrecer la prescripción de TRN, tomando en cuenta el nivel de adicción de la embarazada y la presencia de comorbilidades. Estos fármacos existen en Chile, pero no están hasta el momento disponibles en el sistema público de salud.

All commercially available forms of nicotine replacement therapy (NRT) (gum, transdermal patch, nasal spray, inhaler and sublingual tablets/pills) can help to quit smoking successfully. NRT increases the cessation rate by 50 to 70%. The combination of a nicotine patch with a rapid dosage form of NRT is more effective than a single type of NRT. There is no difference in efficacy between NRT and bupropion, the combination of NRT and bupropion is more effective than bupropion alone. The effects are largely independent of the duration of therapy, the intensity of the support provided or the setting in which the NRT was offered. According to Chilean experts, NRT can be used in adolescents, as chewing gum 2 mg adding behavioral therapy. If a pregnant woman expresses a clear desire to use NRT, it is suggested (i) discuss the associated risks and benefits with her, (ii) use it only if the cessation fails with non-pharmacological measures and iii) use the professional approach when deciding whether to offer the prescription of NRT, considering the level of addiction of the pregnant woman and the presence of comorbidities. TRN exists in Chile, but is not currently available in the public health system.

Molécula 1 de Adhesión Intercelular Soluble en menopáusicas tratadas con estradiol oral o transdérmico / Soluble Intercellular Adhesion Molecule 1 In Postmenopausal Women Treated With Oral Or Transdermal Estradiol

El objetivo de la investigación fue comparar las modificaciones de las concentraciones plasmáticas de la molécula 1 de adhesión intercelular soluble en menopáusicas tratadas con estradiol oral o transdérmico después de 3 meses de uso. Se realizó una investigación con una muestra de 140 pacientes menopáusicas que asistieron a la consulta de Medicina Interna, Endocrinología y Menopausia del Hospital Central Dr. Urquinaona, Maracaibo, Venezuela. Se asignó a 70 pacientes tratamiento con estradiol oral (grupo A) y a 70 pacientes tratamiento con estradiol transdérmico (grupo B). Se evaluaron las concentraciones plasmáticas de molécula 1 de adhesión intercelular soluble antes y después de 3 meses de tratamiento. (p = ns). Las concentraciones plasmáticas de la molécula 1 de adhesión intercelular soluble demostraron una reducción después de 3 meses de tratamiento en ambos grupos (grupo A: 279,1 +/- 76,5 ng/ml al inicio comparado con 241,7 +/- 68,4 ng/ml después del tratamiento y grupo B: 251,9 +/- 73,2 ng/ml después del tratamiento comparado con el valor promedio inicial de 288,7 +/- 62,7 ng/ml; p < 0,05). Se concluye que el uso de estradiol transdérmico puede ser una alternativa eficaz al uso de estradiol oral después de 3 meses de uso, debido a que ambos tratamientos producen disminuciones en las concentraciones plasmáticas de molécula 1 de adhesión intercelular soluble.

The objective of research was: to compare modifications of plasma concentrations of solubleintercellular adhesion molecule 1 in postmenopausal women treated with oral or estradiol after 3 months of use. This study included 140 postmenopausal women attending the Internal Medicine, Endocrinology and Menopause Departments at the Hospital Central "Dr. Urquinaona", Maracaibo, Venezuela. Seventy patients were assigned to be treated with oral estradiol (group A) and 70 patients were treated with transdermal estradiol (group B). Plasma concentrations of soluble intercellular adhesion molecule 1 were measured before and after 3 months of treatment. There were no statically significant differences in general characteristics between the two treatment groups (p = ns). In both groups, soluble intercellular adhesion molecule 1 was reduced after 3 months of treatment (group A: 279.1 +/- 76.5 ng/ml before treatment compared with 241.7 +/- 68.4 ng/ml after treatment and group B: 251.9 +/- 73.2 ng/ml after treatment compared with initial mean value of 288.7 +/- 62.7 ng/ml; p < 0.05). It is concluded that transdermal estradiol could be an effective alternative to oral estradiol after 3 months of use since both treatments decreased plasma concentrations of soluble intercellular adhesion molecule 1. KEYWORDS: Estradiol; Menopause; Transdermal; soluble intercellular adhesión.

Formulation design and in vitro ex vivo evaluation of transdermal patches of Cinnarizine

The aim of this study was to develop a Transdermal patch containing Cinnarizine using different ratios of hydrophilic and hydrophobic polymeric systems by solvent evaporation technique employing Polyethylene glycol [PEG 400] as plasticizer. The physicochemical compatibility of the drug and the polymers were studied by performing FT-IR spectroscopic analysis. Formulated patches were evaluated for physicochemical properties, skin irritation, in vitro drug release, ex-vivo permeation studies across rat abdominal skin and stability studies. The results of FT-IR studies revealed that there were no interactions between drug and polymers used. All the formulations exhibited uniformity in physicochemical properties. In vitro permeation studies of the formulations were performed by using Franz diffusion cells. Formulation F3 showed better permeation through rat skin [i.e., 8527.5+/-1.25microg/cm[2] /hr] compared to rest of formulations and followed Pick's diffusion mechanism. On the basis of in-vitro drug release and ex-vivo skin permeation performance, Formulation F3 containing the polymeric blend 19:1 Hydroxypropylmethyl Cellulose [HPMC E 50cps: Eudragit RL 100] has shown optimum release in comparison to other formulations and indicated good physical stability. So it has been demonstrated that Cinnarizine can be designed as matrix type transdermal drug delivery system [TDDS] and further in-vivo evaluations were required

Efficacy of clonidine transdermal patch in treatment of moderate to severe tic disorders in children / 中国当代儿科杂志

<p><b>OBJECTIVE</b>To investigate the difference in the efficacy between clonidine transdermal patch and haloperidol tablets in the treatment of moderate to severe tic disorders in children.</p><p><b>METHODS</b>A total of 134 children with moderate to severe tic disorders were randomly divided into clonidine group (n=70) and haloperidol group (n=64). The clonidine and haloperidol groups were treated with clonidine transdermal patch and haloperidol tablets respectively, and the treatment lasted for 8 weeks in both groups. The Yale Global Tic Severity Scale (YGTSS) was used to evaluate the conditions of the children before and after treatment, and the adverse events during the treatment were recorded.</p><p><b>RESULTS</b>The haloperidol group had a significantly better treatment outcome than the clonidine group after one week of treatment (P<0.05); the treatment outcome showed no significant difference between the two groups after 3, 5, and 8 weeks of treatment (P>0.05). The clonidine group had significantly less reductions in the motor tics, vocal tics, and function impairment scores and total score of YGTSS than the haloperidol group after one week of treatment (P<0.05); there were no significant differences in YGTSS score reductions between the two groups after 3, 5, and 8 weeks of treatment (P>0.05). The clonidine group had a significantly lower overall incidence of adverse events than the haloperidol group (8% vs 37%; P<0.01).</p><p><b>CONCLUSIONS</b>Clonidine transdermal patch and haloperidol are both effective in the treatment of moderate to severe tic disorders in children. The clonidine transdermal patch, despite slow action, has comparable efficacy and fewer adverse effects compared with haloperidol.</p>

The Efficacy of Fentanyl Transdermal Patch as the First-Line Medicine for the Conservative Treatment of Osteoporotic Compression Fracture / 대한신경손상학회지

OBJECTIVE: There are no strong guidelines on how long or how we should undertake conservative treatment during the acute period of an osteoporotic vertebral compression fracture (VCF). METHODS: We treated 202 patients with conservative treatment on VCF from March 2012 to August 2015. On inclusion criteria, 75 patients (22 males and 53 females) were included in the final analysis. After admission, a transdermal fentanyl patch with low dose (12.5 µg) application was attempted in all patients. In an unresponsive patient, the fentanyl patch was increased by 25 µg. After identifying the tolerable toilet ambulation of the patient without any assistance, hospital discharge was recommended. We classified two patient groups into one favorable group and one unfavorable group and compared several clinical and radiological factors. RESULTS: Among 75 patients, the clinical outcome of 57 patients (76%) was favorable, but that of 18 patients (24%) was unfavorable. In clinical outcomes, the numeric rating scale at 6 and 12 months and Odom's criteria at 12 months was significantly different between the favorable and the unfavorable groups. The dose of the patches used showed statistically significant differences between the two groups (p=0.001). CONCLUSION: The only statistically significant affecting factor for an unfavorable outcome was the use of a higher dose fentanyl patch. Our data inferred that the unresponsiveness to a low-dose fentanyl patch could be helpful to select patients necessary for percutaneous vertebroplasty or kyphoplasty.

Rivastigmina via transdérmica (adesivo) para o tratamento de pacientes com demência leve e moderadamente grave do tipo Alzheimer / Rivastigmine via transdermal (patch) for the treatment of patients with mild and moderately severe Alzheimer's dementia

Contexto: A doença de Alzheimer (DA) é um distúrbio neurodegenerativo progressivo crônico caracterizado por uma deterioração global e não reversível no funcionamento do cérebro, implicando perda de memória e déficit motor e discursivo. No Brasil, a prevalência de demência na população com mais dos 65 anos foi de 7,1%, sendo que a DA foi responsável por 55% dos casos. A taxa de incidência foi 7,7 por 1.000 pessoas-ano no estudo de São Paulo e 14,8 por 1.000 pessoas-ano no estudo do Rio Grande do Sul. Os fármacos considerados de primeira escolha são os inibidores da colinesterase. Dentre esses, encontra-se a rivastigmina, disponível no SUS na sua apresentação por via oral. Atualmente, a rivastigmina como tratamento por via transdérmica está registrada no País, mas não está disponível no SUS. Pergunta: O uso de rivastigmina adesivo transdérmico é eficaz e seguro no tratamento de pacientes com doença de Alzheimer quanto comparado com rivastigmina oral? Evidências científicas: Um ensaio clínico randomizado, duplo cego, com quatro braços: placebo, Exelon Patch 10, Exelon Patch 20 e cápsula oral 6mg 2xdia, que estudou mais de 1000 voluntários, foi apresentado como evidência científica. Os resultados do estudo demonstram que a apresentação via transdérmica (Exelon Patch 10) se mostrou superior ao placebo e tão eficaz quanto a apresentação via oral e que os adesivos poderiam apresentar redução de efeitos adversos gastrointestinais. Os dados corroboram outros estudos que avaliaram o adesivo transdérmico e que também demonstraram eficácia e segurança comparável entre as duas formas farmacêuticas (oral e transdérmica) do medicamento. Mais atenção deve ser dada ao tamanho do efeito que estas drogas tem gerado de eficácia no tratamento da doença de Alzheimer. Conclusão: Os resultados apresentados nos ensaios clínicos sugerem que a rivastigmina via transdérmica é tão eficaz e segura quanto a rivastigmina via oral. Entretanto, o tamanho do efeito apresentado é de difícil mensuração, sendo baseado em variações pontuais de pequena magnitude de uma escala específica. O impacto orçamentário para a incorporação da tecnologia diminui significativamente caso seja adotado um preço para o Patch 5 equivalente a Rivastigmina 1,5mg (duas vez ao dia) e para o Patch 10 equivalente a Rivastigmina 3mg (duas vez ao dia), que seriam as doses equivalentes de tratamento inicial e de manutenção. Decisão: Incorporar a rivastigmina adesivo transdérmico para o tratamento de demência para Doença de Alzheimer, conforme Protocolo Clínico e Diretrizes Terapêuticas do Ministério da Saúde, no âmbito do Sistema Único de Saúde ­ SUS, dada pela Portaria SCTIE-MS nº 31 publicada no Diário Oficial da União (DOU) nº 183, de 22 de setembro de 2016.

Rivastigmina adesivo transdérmico para o tratamento de demência para Doença de Alzheimer / Rivastigmine transdermal patch for the treatment of dementia for Alzheimer's Disease

Contexto: A doença de Alzheimer (DA) é um distúrbio neurodegenerativo progressivo crônico caracterizado por uma deterioração global e não reversível no funcionamento do cérebro, implicando perda de memória e déficit motor e discursivo. No Brasil, a prevalência de demência na população com mais dos 65 anos foi de 7,1%, sendo que a DA foi responsável por 55% dos casos. A taxa de incidência foi 7,7 por 1.000 pessoas-ano no estudo de São Paulo e 14,8 por 1.000 pessoas-ano no estudo do Rio Grande do Sul. Os fármacos considerados de primeira escolha são os inibidores da colinesterase. Dentre esses, encontra-se a rivastigmina, disponível no SUS na sua apresentação por via oral. Atualmente, a rivastigmina como tratamento por via transdérmica está registrada no País, mas não está disponível no SUS. Pergunta: O uso de rivastigmina adesivo transdérmico é eficaz e seguro no tratamento de pacientes com doença de Alzheimer quanto comparado com rivastigmina oral? Evidências científicas: Um ensaio clínico randomizado, duplo cego, com quatro braços: placebo, Exelon Patch 10, Exelon Patch 20 e cápsula oral 6mg 2xdia, que estudou mais de 1000 voluntários, foi apresentado como evidência científica. Os resultados do estudo demonstram que a apresentação via transdérmica (Exelon Patch 10) se mostrou superior ao placebo e tão eficaz quanto a apresentação via oral e que os adesivos poderiam apresentar redução de efeitos adversos gastrointestinais. Os dados corroboram outros estudos que avaliaram o adesivo transdérmico e que também demonstraram eficácia e segurança comparável entre as duas formas farmacêuticas (oral e transdérmica) do medicamento. Mais atenção deve ser dada ao tamanho do efeito que estas drogas tem gerado de eficácia no tratamento da doença de Alzheimer. Avaliação de Impacto Orçamentário: O preço ofertado pela empresa foi igual ao preço da rivastigmina via oral, já adquirida pelo SUS. Porém, foi considerado que a incorporação da nova apresentação trará um impacto orçamentário incremental devido aos seguintes fatos: 1) Migração de pacientes utilizando a rivastigmina por via oral para o adesivo transdérmico; 2) Migração de pacientes utilizando outros medicamentos para a rivastigmina transdérmica; 3) Pacientes que já fazem uso da rivastigmina transdérmica adquirida por conta própria ou financiada por outro ente federativo passariam a receber o medicamento pelo SUS. Portanto, foi estimado um impacto orçamentário de R$ 3 a 9 milhões no primeiro ano e de R$ 16 a 47 milhões no terceiro ano após a incorporação. Decisão: Não incorporar o uso da rivastigmina adesivo transdérmico para o tratamento de demência para Doença de Alzheimer, no âmbito do Sistema Único de Saúde ­ SUS, dada pela Portaria SCTIE-MS nº 8 publicada no Diário Oficial da União (D.O.U.) nº 18, de 27 de janeiro de 2016.

comparison of the effects of transdermal estradiol and estradiol valerate on endometrial receptivity in frozen-thawed embryo transfer cycles: a randomized clinical trial

Background: The purpose of this study was to determine the optimal endometrial preparation protocol by comparing the clinical outcome of two methods of endometrial preparation in frozen-thawed embryo transfer [FET] cycles, including that is, oral estradiol and 17 beta-estradiol transdermal patch

Methods: In this randomized controlled trial, women underwent either conventional IVF or intracytoplasmic sperm injection [ICSI] who had at least two top-quality embryos appropriate for cryopreservation and frozen embryos from previous cycles. In the study group [n=45], 17-B estradiol transdermal patches 100 microg were applied from the second day of the cycle and continued every other day. Then, each patch was removed after four days. In the control group [n=45], oral estradiol valerate 6 mg was started at the same time and continued daily

Results: There was a significant difference in estradiol level on the day of progesterone administration and the day of embryo transfer between the two groups [p=0.001 in both], but no significant difference was observed between them in biochemical and clinical pregnancy rates [32.6% vs. 33.3%, p=1.000 and 30.2% vs. 33.3%, p=0.810, respectively]

Conclusion: It is suggested that estradiol transdermal patches be used instead of oral estradiol in FET cycles. Due to the reduced costs, drug dose, and emotional stress as well as the simplicity of the protocol for patients

Lidocaine skin patch [lidopat[registered] 5%] is effective in the treatment of traumatic rib fractures: a prospective double-blinded and vehicle-controlled study

Objective: The purpose of this study was to determine the efficacy of the Lidopat[registered] 5% skin patch in relieving rib fracture pain

Subjects and Methods: From June 2009 to May 2011, 44 trauma patients with isolated rib fractures were enrolled in this study and randomized in a double-blind method into 2 groups. The experimental group [group E: 27 patients] used a Lidopat[registered] 5% skin patch at the trauma site and took an oral analgesic drug for pain relief. The placebo group [group P: 17 patients] used a placebo vehicle patch and an oral analgesic drug

Results: The mean age, weight and hospital stay of patients were 56.8 +/- 13.8 years, 67.4 +/- 12.6 kg and 6.34 +/- 1.3 days, respectively. In the first 4 days, there were no significant differences in pain scores between the groups [p > 0.05]. After the 5th day, the average pain score was significantly less in group E [mean 1.5] than in group P [mean 3.10; p < 0.05]. There was no significant difference in the number of fractured ribs between groups [p = 0.904]. The use of meperidine and the length of hospital stay [6.0 vs. 6.9 days] were both significantly less in group E [p = 0.043 and 0.009, respectively]

Conclusion: In this study, the use of the Lidopat[registered] 5% skin patch in patients with isolated rib fractures alleviated pain and shortened the hospital stay, and a lower dose of pain-relieving medication was used

Liquid crystalline systems containing Vitamin E TPGS for the controlled transdermal nicotine delivery

ABSTRACT Transdermal nicotine patches have been used in smoking cessation therapy, suggested for the treatment of skin disorders with eosinophilic infiltration and have been found to improve attention performance in patients with Alzheimer's disease and age-associated memory impairment. However, skin irritation with extended patch use is still a problem. The aim of this work was to develop a simple to prepare liquid crystalline system containing vitamin E TPGS that would be able to control nicotine delivery and reduce irritation and sensitization problems. The liquid crystalline phases were macroscopically characterized by visual analysis and examined microscopically under a polarized light microscope. Topical and transdermal delivery of nicotine were investigated in vitro using porcine ear skin mounted on a Franz diffusion cell. Nicotine skin permeation from the developed cubic phase followed zero-order kinetics (r = 0.993) and was significantly enhanced after 12 h when compared to the control formulation (nicotine solution) (p < 0.05) (138.86 ± 20.44 and 64.91 ± 4.06 μg/cm2, respectively). Cubic phase was also able to target viable skin layers in comparison to control solution (8.18 ± 1.89 and 2.63 ± 2.51 μg/cm2, respectively). Further studies to evaluate skin sensitization and irritation are now necessary.

RESUMO Adesivos transdérmicos de nicotina são utilizados para cessação de fumar, tratamento de problemas de pele com infiltração de eosinófilos e para melhorar a atenção em pacientes com doença de Alzheimer e enfraquecimento da memória associada à idade. No entanto, a irritação da pele com o uso prolongado dos adesivos ainda é um problema. O objetivo deste trabalho foi desenvolver sistema líquido cristalino (SLC) de preparo simples contendo vitamina E TPGS capaz de controlar a liberação de nicotina e reduzir os problemas de irritação cutânea. Os SLCs foram caracterizados por análise visual e microscopia de luz polarizada. As administrações tópica e transdérmica de nicotina foram investigadas in vitro utilizando pele de orelha de porco em célula de difusão de Franz. A permeação da nicotina veiculada pela fase cúbica desenvolvida seguiu cinética de ordem zero (r = 0,993) e foi significativamente maior do que o controle (solução de nicotina) após 12 h (p < 0,05) (138,86 ± 20,44 e 64,91 ± 4,06 µg/cm2, respectivamente). A fase cúbica também promoveu aumento da penetração de nicotina nas camadas viáveis da pele quando comparado ao controle (8,18 ± 1,89 e 2,63 ± 2,51 µg/cm2, respectivamente). Estudos futuros para avaliar a sensibilização e irritação da pele são necessários.

Pretreatment of normal responders in fresh in vitro fertilization cycles: A comparison of transdermal estradiol and oral contraceptive pills / 대한생식의학회지

OBJECTIVE: The aim of this study was to investigate the impact of pretreatment with transdermal estradiol (E₂) compared to oral contraceptive pills (OCPs) on controlled ovarian stimulation (COS) response in normal responders undergoing fresh in vitro fertilization (IVF)-embryo transfer (ET) cycles. METHODS: A retrospective cohort study was performed of normal responders undergoing fresh IVF-ET cycles who received pretreatment with transdermal E₂ versus OCPs prior to fresh IVF-ET. The total days of ovarian stimulation, total dosage of gonadotropins, total number of oocytes, and mature oocytes retrieved were noted. Pregnancy outcomes after ET were also recorded. RESULTS: A total of 2,092 patients met the inclusion criteria: 1,057 and 1,035 patients in the transdermal E₂ and OCP groups, respectively. Patients in the OCP group had a longer duration of COS (10.7±1.63 days, p<0.01) than the E₂ group (9.92±1.94 days). Patients in the OCP group also required higher cumulative doses of gonadotropins (2,657.3±1,187.9 IU) than those in the E₂ group (2,550.1±1,270.2 IU, p=0.002). No statistically significant differences were found in the total and mature oocytes retrieved or in the rates of biochemical pregnancy, clinical pregnancy, spontaneous miscarriage, and live birth between the groups. CONCLUSION: Our findings suggest that compared to OCPs, pretreatment with transdermal E₂ is associated with a shorter duration of ovarian stimulation and lower gonadotropin utilization, without compromising the oocyte yield or pregnancy outcomes in normal-responder patients undergoing fresh IVF.

The Effect of Rivastigmine Transdermal Patch on Sleep Apnea in Patients with Probable Alzheimer's Disease

BACKGROUND AND PURPOSE: This study was designed to evaluate the effect on sleep of rivastigmine transdermal patch in patients with probable Alzheimer's disease (AD). METHODS: Patients with probable AD underwent a sleep questionnaire, overnight polysomnography and neuropsychological tests before and after rivastigmine transdermal patch treatment. We analyzed the data from enrolled patients with AD. RESULTS: Fourteen patients with probable AD were finally enrolled in this study. The respiratory disturbance index after the rivastigmine patch treatment was improved in patients with probable AD and sleep breathing disorder, compared with that of before treatment (p<0.05). CONCLUSIONS: Rivastigmine transdermal patch application are expected to improve the symptoms of sleep disordered breathing in patients with probable AD. Further placebo controlled studies are needed to confirm these results.