BEHIND THE PROTON PUMP INHIBITOR PRESCRIPTION: AN INTERNATIONAL SURVEY ON PHYSICIAN PRACTICES AND KNOWLEDGE.

BACKGROUND: Proton pump inhibitors (PPIs) are widely prescribed worldwide, often resulting in their overuse. Consequently, it is essential to identify the likely causes of this overuse to facilitate their appropriate prescription. OBJECTIVE: This study aims to assess physician prescribing patterns, their knowledge of PPIs, and factors affecting their knowledge. METHODS: An online survey was conducted among Latin American and Spanish physicians, collecting the following data: professional information, patterns of PPI usage, familiarity with published evidence, and the management approach in three hypothetical case-scenarios. Participant knowledge was categorized as sufficient or insufficient based on the results of the case scenarios. Subsequently, subgroup analysis was performed based on physician training level, years in practice, specialty, and time since the last PPI literature review. RESULTS: A total of 371 physicians participated in the survey. Thirty-eight percent frequently prescribe PPIs, primarily for prophylactic purposes (57.9%). Eighty percent were unfamiliar with PPI deprescribing strategies, and 54.4% rarely reviewed the ongoing indication of patients taking a PPI. Sixty-four percent demonstrated sufficient knowledge in the case-scenarios. A significant association was observed between specialty type (medical vs surgical: 69.4% vs 46.8%, P<0.001), the timing of the PPI indication literature review (<5 years vs >5 years: 71.4% vs 58.7%, P=0.010), and sufficient knowledge. CONCLUSION: While most participants prescribed PPIs regularly and for prophylaxis purposes, the majority were unfamiliar with deprescribing strategies and rarely reviewed ongoing indications. Sufficient knowledge is correlated with recent literature reviews and medical specialty affiliation. BACKGROUND: • The study aims to evaluate physician prescribing patterns, assess their knowledge of proton pump inhibitors, and identify factors influencing their knowledge. BACKGROUND: • An online survey of Latin American and Spanish physicians assessed proton pump inhibitor usage patterns and case-scenario responses, categorizing knowledge, and conducting subgroup analysis based on training, experience, specialty, and literature review timing. BACKGROUND: • Thirty-eight percent of surveyed physicians commonly prescribed proton pump inhibitors, and among them, 80% were unfamiliar with deprescribing strategies, with 54.4% rarely reviewing ongoing indications. BACKGROUND: • Sufficient knowledge was correlated with recent literature reviews and medical specialty affiliations.

Bastidores da prescrição de inibidores de bomba de prótons: uma pesquisa internacional sobre práticas e conhecimentos médicos / Behind the proton pump inhibitor prescription: an international survey on physician practices and knowledge

ABSTRACT Background: Proton pump inhibitors (PPIs) are widely prescribed worldwide, often resulting in their overuse. Consequently, it is essential to identify the likely causes of this overuse to facilitate their appropriate prescription. Objective: This study aims to assess physician prescribing patterns, their knowledge of PPIs, and factors affecting their knowledge. Methods: An online survey was conducted among Latin American and Spanish physicians, collecting the following data: professional information, patterns of PPI usage, familiarity with published evidence, and the management approach in three hypothetical case-scenarios. Participant knowledge was categorized as sufficient or insufficient based on the results of the case scenarios. Subsequently, subgroup analysis was performed based on physician training level, years in practice, specialty, and time since the last PPI literature review. Results: A total of 371 physicians participated in the survey. Thirty-eight percent frequently prescribe PPIs, primarily for prophylactic purposes (57.9%). Eighty percent were unfamiliar with PPI deprescribing strategies, and 54.4% rarely reviewed the ongoing indication of patients taking a PPI. Sixty-four percent demonstrated sufficient knowledge in the case-scenarios. A significant association was observed between specialty type (medical vs surgical: 69.4% vs 46.8%, P<0.001), the timing of the PPI indication literature review (<5 years vs >5 years: 71.4% vs 58.7%, P=0.010), and sufficient knowledge. Conclusion: While most participants prescribed PPIs regularly and for prophylaxis purposes, the majority were unfamiliar with deprescribing strategies and rarely reviewed ongoing indications. Sufficient knowledge is correlated with recent literature reviews and medical specialty affiliation.

RESUMO Contexto: Os inibidores da bomba de prótons (IBPs) são amplamente prescritos em todo o mundo, muitas vezes resultando em seu uso excessivo. Consequentemente, é essencial identificar as prováveis causas desse uso excessivo para facilitar sua prescrição adequada. Objetivo: Este estudo tem como objetivo avaliar o padrão de prescrição dos médicos, seu conhecimento sobre IBPs e fatores que afetam seu conhecimento. Métodos: Uma pesquisa on-line foi conduzida entre médicos latino-americanos e espanhóis, coletando os seguintes dados: informações profissionais, padrões de uso de IBP, familiaridade com evidências publicadas e abordagem de manejo em três casos-cenários hipotéticos. O conhecimento dos participantes foi categorizado em suficiente ou insuficiente com base nos resultados dos cenários de caso. Posteriormente, a análise de subgrupos foi realizada com base no nível de formação do médico, anos de prática, especialidade e tempo desde a última revisão da literatura dos IBPs. Resultados: Um total de 371 médicos participaram da pesquisa. Trinta e oito por cento prescrevem frequentemente IBP, principalmente para fins profiláticos (57,9%). Oitenta por cento não estavam familiarizados com as estratégias de prescrição de IBP, e 54,4% raramente revisaram a indicação contínua de pacientes em uso de IBP. Sessenta e quatro por cento demonstraram conhecimento suficiente nos cenários-caso. Observou-se associação significativa entre o tipo de especialidade (médica vs cirúrgica: 69,4% vs 46,8%, P<0,001), o momento da revisão da literatura de indicação do IBP (<5 anos vs >5 anos: 71,4% vs 58,7%, P=0,010) e conhecimento suficiente. Conclusão: Embora a maioria dos participantes prescrevesse IBPs regularmente e para fins de profilaxia, no entanto, não estava familiarizada com estratégias de prescrição e raramente revisava as indicações em andamento. O conhecimento suficiente está correlacionado com revisões recentes da literatura e afiliação à especialidade médica.

Recurrent acute pancreatitis is not uncommon in our clinical setting.

Data on recurrent episodes of acute pancreatitis (RAP) are scarce. The aim of the study was to evaluate our rate of RAP and risks factors. This is a retrospective, single-center, study of consecutive patients admitted for AP and followed-up. Patients with more than one AP attack (RAP) were compared with patients with only a single AP episode (SAP) Clinical, demographic, outcome measures and severity were studied. 561 patients were included and follow-up over a mean 67.63 months' time. Our rate of RAP was 18,9%. Most patients suffered form only one episode of RAP (93%). Etiology of RAP episodes was mainly biliary (67%). On univariate analysis younger age (p 0.004), absence of high blood pressure (p 0.013) and absent of SIRS (p 0.022) were associated with recurrence of AP. On multivariate analysis only younger age was related to RAP (OR 1.015 95%IC 1.00-1.029). There were no statistical differences in outcome measures between both cohorts. RAP had a milder course in terms of severity (SAP 19% moderately severe/severe versus 9% in SAP). Almost 70% of the biliary RAP patients did not have a cholecystectomy performed. In this subset of patients, age OR 0.964 (95%IC 0.946-0.983), cholecystectomy OR 0.075 (95%IC 0.189-0.030) and cholecystectomy plus ERCP OR 0.190 (95%IC 0.219-0.055) were associated with absent of RAP. The rate of RAP in our series was 18,9%. Younger age was the only risk factor associated. Biliary etiology accounts for a large proportion of our RAP which could have been prevented with cholecystectomy or cholecystectomy plus ERCP.

Recurrent acute pancreatitis is not uncommon in our clinical setting

Data on recurrent episodes of acute pancreatitis (RAP) are scarce. The aim of the study was to evaluate our rate of RAP and risks factors. This is a retrospective, single-center, study of consecutive patients admitted for AP and followed-up. Patients with more than one AP attack (RAP) were compared with patients with only a single AP episode (SAP) Clinical, demographic, outcome measures and severity were studied. 561 patients were included and follow-up over a mean 67.63 months' time. Our rate of RAP was 18,9%. Most patients suffered form only one episode of RAP (93%). Etiology of RAP episodes was mainly biliary (67%). On univariate analysis younger age (p 0.004), absence of high blood pressure (p 0.013) and absent of SIRS (p 0.022) were associated with recurrence of AP. On multivariate analysis only younger age was related to RAP (OR 1.015 95%IC 1.00-1.029). There were no statistical differences in outcome measures between both cohorts. RAP had a milder course in terms of severity (SAP 19% moderately severe/severe versus 9% in SAP). Almost 70% of the biliary RAP patients did not have a cholecystectomy performed. In this subset of patients, age OR 0.964 (95%IC 0.946-0.983), cholecystectomy OR 0.075 (95%IC 0.189-0.030) and cholecystectomy plus ERCP OR 0.190 (95%IC 0.219-0.055) were associated with absent of RAP. The rate of RAP in our series was 18,9%. Younger age was the only risk factor associated. Biliary etiology accounts for a large proportion of our RAP which could have been prevented with cholecystectomy or cholecystectomy plus ERCP.

La Pancreatitis Aguda Recurrente (PAR) es una entidad frecuente de la que hay pocos datos publicados. El objetivo del estudio es hallar la tasa y factores de riesgo asociados a PAR en nuestro medio. Es un estudio retrospectivo, unicéntrico, de pacientes ingresados por Pancreatitis Aguda (PA) y seguidos posteriormente. Se dividen en 2 grupos de pacientes: 1.- pacientes con un solo episodio de PA (PAS) y 2.- pacientes con más de un ingreso por PA (PAR). Se comparan variables clínicas, demográficas y de resultado. Resultados: 561 pacientes fueron incluidos y seguidos durante una media de 67,63 meses. 18,9% tuvieron al menos otro ingreso por PA. La mayoría sufrieron un solo episodio de PAR (93%). La etiología más frecuente fue biliar (67%). En el análisis univariado, una menor edad (p 0,004), la ausencia de hipertensión arterial (p 0,013) y de SIRS (p 0,022) se asociaron con PAR. En el análisis multivariado solo una menor edad se relacionó con PAR (OR 1,015, 95%, IC 1,00-1,029). No encontramos diferencias en las variables resultados entre ambos grupos. La PAR cursó de forma más leve (9% de pancreatitis moderada/graves o graves versus 19%). Casi un 70% de los pacientes con PAR biliar no tenían realizada una colecistectomía tras el ingreso índice. En este subgrupo de PAR, la edad OR 0,964 (95% IC 0,946-0,983), la colecistectomía OR 0,075 (95% IC 0,189-0,030) y la colecistectomía más colangiografía retrógrada OR 0,190 (95% IC 0,219-0,055) se asociaban a ausencia de PAR. Conclusión: Nuestra tasa de PAR fue 18,9%, con una menor edad como factor de riesgo. La etiología biliar fue la más frecuente que podría haberse evitado de haber realizado colecistectomía o colecistectomía más colangiografía retrógrada tras el primer ingreso.

Hipocondroplasia en pediatría: reporte de un caso / Hypocondroplasya in pediatrics: case study / Hipocondroplasia em pediatia: relato de caso

La hipocondroplasia es una displasia esquelética caracterizada por baja estatura, constitución robusta, brazos y piernas desproporcionadamente cortos, manos y pies anchos y cortos, leve laxitud articular y macrocefalia. Los niños generalmente se presentan como pequeños, con velocidad de crecimiento disminuida, que conduce a una baja estatura y desproporción de las extremidades. La hipocondroplasia en la mayoría de los casos se hereda con carácter autosómico dominante, aunque se detectan numerosos casos esporádicos. El diagnóstico requiere una exhaustiva anamnesis y adecuada exploración física. Es importante valorar algunos indicadores de crecimiento como: peso para la edad, longitud/talla para la edad, relación entre peso y longitud/talla, velocidad de crecimiento, talla diana genética, medidas de segmentos corporales, entre otros. Las radiografías esqueléticas permiten diagnosticar la mayoría de las displasias óseas. Los estudios moleculares suelen ser la prueba de confirmación y se solicitan ante una sospecha diagnóstica. Es importante incluir las displasias óseas en el diagnóstico diferencial de la talla baja y tenerlas en cuenta ante cualquier caso de talla baja disarmónica con alteraciones fenotípicas. La hipocondroplasia en la actualidad, no es una indicación aprobada para tratamiento con hormona del crecimiento. Se presenta un caso clínico de una niña de 14 meses, con talla baja severa, desproporcionada, que presentó dificultades para llegar al diagnóstico definitivo de hipocondroplasia.

Hypochondroplasia is a skeletal dysplasia characterized by short height, robust build, disproportionately short arms and legs, short and broad hands and feet, mild joint laxity, and macrocephaly. Children generally show slow growth rate, which leads to short stature and limb disproportion. Hypochondroplasia is mostly inherited with an autosomal dominant character, although many sporadic cases have been detected. Diagnosis requires a thorough history and adequate physical examination. It is important to assess some growth indicators such as: weight for age, length/height for age, relationship between weight and length/height, growth speed, genetic target height, measurements of body segments, among others. Skeletal XRs can diagnose most bone dysplasias. Molecular studies are usually the confirmatory test and are requested when a diagnosis is suspected. It is important to include bone dysplasias in the differential diagnosis of short stature and to take them into account for any disharmonious short stature with phenotypic alterations. Hypochondroplasia is currently not an approved indication for growth hormone therapy. We present a clinical case of a 14-month-old girl, with a severe, disproportionate short stature, who presented difficulties in her definitive hypochondroplasia diagnosis.

A hipocondroplasia é uma displasia esquelética caracterizada por baixa estatura, constituição robusta, braços e pernas desproporcionalmente curtos, mãos e pés largos e curtos, frouxidão articular leve e macrocefalia. As crianças geralmente são pequenas, com diminuição da velocidade de crescimento, o que leva à baixa estatura e desproporção dos membros. A hipocondroplasia na maioria dos casos é herdada com caráter autossômico dominante, embora sejam detectados numerosos casos esporádicos. O diagnóstico requer uma história completa e um exame físico adequado. É importante avaliar alguns indicadores de crescimento como: peso para idade, comprimento/altura para idade, relação entre peso e comprimento/altura, taxa de crescimento, estatura alvo genético, medidas de segmentos corporais, entre outros. As radiografias esqueléticas permitem o diagnóstico da maioria das displasias ósseas. Os estudos moleculares são geralmente o teste de confirmação e são solicitados quando há suspeita de diagnóstico. É importante incluir as displasias ósseas no diagnóstico diferencial da baixa estatura e considerá-las em qualquer caso de baixa estatura desarmônica com alterações fenotípicas. A hipocondroplasia não é atualmente uma indicação aprovada para o tratamento com hormônio de crescimento. Apresenta-se o caso clínico de uma menina de 14 meses, com baixa estatura grave e desproporcional, que apresentou dificuldades em chegar ao diagnóstico definitivo de hipocondroplasia.

Evolución de los signos cerebelosos, la paratonía y las sincinesias en el niño / Evolution of cerebellar signs, the paratonia and the child synkinesias

Objetivo: estudiar a través del examen neurológico evolutivo, la maduración de los signos cerebelosos, la paratonía y las sincinecias en el niño. Método: se realizó un estudio de tipo transversal, examinándose niños de 4 a 12 años de edad, de ambos sexos, de escuelas públicas de Montevideo, entre octubre 2006-mayo 2008. Resultados: se examinaron 330 niños, 178 varones y 152 niñas. La paratonía en maniobra de caída del brazo, estuvo presente en el 70% a los 4 años y en el 17% a los 11 años. A los 7 años el 100% de los niños lograron el equilibrio estático en un pie y el 92.5% el equilibrio en el salto en un pie. La marcha punta-talón la lograron el 96.2% de los niños de 6 años de edad. El 79% de los niños de 7 años lograron la metría en la maniobra índice-nariz. La diadococinesia en la maniobra palma-dorso fue lograda en el 100% de los niños de 6 años de edad y la maniobra de marionetas en el 100% de los niños de 9 años. Las sincinesias de imitación estuvieron presentes en el 80% a los 4 años y menos del 20% a los 11 años. La maniobra de oposición de dedos al pulgar la lograron el 92,5% de los niños de 8 años de edad. Conclusiones: se constata que el desarrollo motriz presenta etapas secuencialmente ordenadas, donde los cambios más significativos en la maduración de los sistemas motores ocurre entre los 5 y 6 años de edad.

Evolución de los signos cerebelosos, la paratonía y las sincinesias en el niño / Evolution of cerebellar signs, the paratonia and the child synkinesias

Objetivo: estudiar a través del examen neurológico evolutivo, la maduración de los signos cerebelosos, la paratonía y las sincinecias en el niño. Método: se realizó un estudio de tipo transversal, examinándose niños de 4 a 12 años de edad, de ambos sexos, de escuelas públicas de Montevideo, entre octubre 2006-mayo 2008. Resultados: se examinaron 330 niños, 178 varones y 152 niñas. La paratonía en maniobra de caída del brazo, estuvo presente en el 70% a los 4 años y en el 17% a los 11 años. A los 7 años el 100% de los niños lograron el equilibrio estático en un pie y el 92.5% el equilibrio en el salto en un pie. La marcha punta-talón la lograron el 96.2% de los niños de 6 años de edad. El 79% de los niños de 7 años lograron la metría en la maniobra índice-nariz. La diadococinesia en la maniobra palma-dorso fue lograda en el 100% de los niños de 6 años de edad y la maniobra de marionetas en el 100% de los niños de 9 años. Las sincinesias de imitación estuvieron presentes en el 80% a los 4 años y menos del 20% a los 11 años. La maniobra de oposición de dedos al pulgar la lograron el 92,5% de los niños de 8 años de edad. Conclusiones: se constata que el desarrollo motriz presenta etapas secuencialmente ordenadas, donde los cambios más significativos en la maduración de los sistemas motores ocurre entre los 5 y 6 años de edad.

Optical encoder based on a nondiffractive beam.

Optical encoders are used in industrial and laboratory motion equipment to measure rotations and linear displacements. We introduce a design of an optical encoder based on a nondiffractive beam. We expect that the invariant profile and radial symmetry of the nondiffractive beam provide the design with remarkable tolerance to mechanical perturbations. We experimentally demonstrate that the proposed design generates a suitable output sinusoidal signal with low harmonic distortion. Moreover, we present a numerical model of the system based on the angular spectrum approximation whose predictions are in excellent agreement with the experimental results.

Linear displacement measurement with a grating and speckle pattern illumination.

We present a study of the variations of a speckle pattern passing through a grating that can be displaced. This study is described theoretically by a simple model based on the scalar diffraction theory in the Fresnel zone. The intensity correlation of the modified speckle as a function of the grating displacement is obtained and compared with experimental results. The possibilities of metrological applications in optical encoders are suggested.

Surface characterization from doubly scattered light.

When a translucent diffuser is illuminated by a speckle pattern, a new speckle pattern is produced. We show that the decorrelation of this intensity pattern by displacement of the diffusing surface is related to the standard deviation of the slope's distribution when the illuminating speckle grain is chosen appropriately small. The experimental results are compared with those obtained by measuring the angular distribution of the mean scattered intensity, and they show good agreement with each other.

Speckle size of light scattered from slightly rough cylindrical surfaces.

This research is an extension of the optical method of quality control presented in a previous paper [Appl. Opt. 39, 5811 (2000)] to the case of slightly rough cylindrical surfaces. Applying the Kirchhoff scalar diffraction theory yields an analytical expression of the autocorrelation function of the intensity scattered from slightly rough cylindrical surfaces. This function, which is related to speckle size and shape, is shown to depend on the surface correlation length, unlike for plane surfaces for which the speckle depends on the illuminated area only. The theoretical expression is compared with that for the speckle produced by the light scattered from a cylindrical bearing and from various high-quality wires, showing that the method allows the correlation lengths of high-quality cylindrical surfaces to be determined.

Problemas diagnósticos en las dispraxias / Diagnostic problems of dispraxias

Con el fin de precisar el diagnóstico de la dispraxia constructiva se estudian niños, que consultaron en edad escolar por dificultad de aprendizaje y/o dificultad motriz y que tenían: a)una discrepancia a favor del CIV del WISC de 20 puntos o más, y/o el Bender con una edad de maduración perceptivo-motriz dos o más años por debajo de la edad cronológica. Se realizó estudio neurológico, psicológico y pedagógico. Se concluyó que en el diagnóstico de dispraxia constructiva es importante: 1) la anamnesis exhaustiva y dirigida, 2) la discrepancia de más de 30 puntos entre la escala verbal y ejecutiva del WISC, y/o la escala ejecutiva menor de 70 y/o cubos y/o rompecabezas por debajo de 7; 3) alteraciones del pensamiento lógico matemático que se traducen en dificultades en las matemáticas. El examen neurológico y el estudio neuropsicológico completo, incluye el estudio de la lectura, las matemáticas y el lenguaje oral, pueden dar elementos para establecer una probable localización y la extensión de la alteración que influye en el pronóstico

Neuroanatomía

Un texto completo, excelentemente ilustrado sobre el tema: Organización general, estructura y origen del sistema nervioso. El sistema nervioso central y sus envolturas:cráneo y raquis. Médula espinal. Tronco encefálico. Cerebelo. Desarrollo del cerebro. Diencéfalo. Hemisferios cerebrales. Corteza cerebral. Circulación encefálica. Topografía craneoencefálica. El sistema nervioso periferico. Organización anatomo-funcional del sistema nervioso