Análisis del éxito de las números uno en la prueba MIR de 2022 y 2023. El impacto de la preparación y el efecto del azar / Analysis of the success of the highest scoring candidates in Spain’s Resident Medical Intern (MIR) examinations of 2022 and 2023. The impact of preparation and the effect of serendipity

Introducción: El examen de médico interno residente (examen MIR) es la prueba que permite el acceso a la formación médica especializada en España. Su objetivo es distribuir las plazas disponibles para las diferentes especialidades médicas entre los graduados en Medicina, teniendo en cuenta para ello tanto su expediente como los resultados de la prueba. La realización de un examen de test tiene un cierto componente de aleatoriedad.Objetivos: Analizar el rendimiento de las números uno de las convocatorias de 2021-2022 y 2022-2023 a lo largo de su preparación, así como conocer qué resultados podrían obtener en caso de que repitieran el mismo examen un millón de veces. Material y métodos: Se hizo uso de la información relativa al rendimiento de los estudiantes que prepararon las pruebas con cursos intensivos MIR Asturias, así como de los principios de la teoría de respuesta al ítem.Resultados. En 11 (33,3%) y 14 (42,4%) de las 33 pruebas realizadas a lo largo de la preparación, las números uno se clasificaron entre los 10 primeros. A partir de las simulaciones de las pruebas MIR de 2022 y 2023, se obtuvo que la primera clasificada de 2022 quedaría entre los 185 primeros de la prueba, y la de 2023, entre los 92 primeros.Conclusiones: Para obtener un número de orden entre los primeros clasificados es necesario disponer de un ability elevado, el cual se consigue a través de una preparación sólida. Además, el azar tiene un cierto nivel de influencia sobre los resultados de los opositores presentados a la prueba.(AU)

Introduction: The MIR exam is the test that allows access to specialized medical training in Spain. Its objective is to distribute the available places for the different medical specialties among Medicine graduates, taking into account both their record and the results of the test. Taking a test exam has a certain element of randomness.Objectives: Analyze the performance of the number ones of the 2021-2022 and 2022-2023 calls throughout their preparation, as well as know what results they could obtain if they repeated the same exam one million times. Material and methods: Information related to the performance of the students who prepared the tests with MIR Asturias Intensive Courses was used, as well as the principles of item response theory.Results. In 11 (33.3%) and 14 (42.4%) of the 33 tests carried out throughout the preparation, number one was classified among the top 10. From the simulations of the 2022 and 2023 MIR tests, it was obtained that the first classified in 2022 would be among the top 185 in the test and in 2023 among the top 92. Conclusions: To obtain an order number among the first classified it is necessary to have a high ability, which is achieved through solid preparation. In addition, randomness has a certain level of influence on the results of the opponents presented to the test.(AU)

Imaging diagnosis--celiac artery pseudoaneurysm associated with a migrating grass awn.

The ultrasound and computed tomography findings of a retroperitoneal pseudoaneurysm associated with a grass awn are described in a 10-month-old dog. Ultrasound was used to localize the lesion and surrounding reaction as well as to determine its relationship with the celiac artery, but inadequate Doppler settings hindered the diagnosis of its vascular nature. Dual phase CT enabled further characterization, particularly its close relationship with the major retroperitoneal vessels. The imaging examination was fundamental in recommending nonsurgical therapy. The dog died as a consequence of the rupture of this pseudoaneurysm. A grass awn was confirmed.

Use of recombinant human interferon alpha-2a in the management of a dog with epitheliotropic lymphoma.

An 8-year-old, mixed-breed dog with preputial epitheliotropic lymphoma was initially treated with cyclophosphamide, vincristine, and prednisolone. A short-term partial response was followed by disease progression after 4 weeks. Recombinant human interferon alpha-2a was administered starting at week 7. The interferon therapy resulted in rapid resolution of clinical signs and a 10-week disease-free interval. The lymphoma recurred at 17 weeks and did not respond to rescue chemotherapy. Additional oral lesions were treated with localized radiotherapy followed by increased dosages of interferon. This additional interferon treatment resulted in another 12 weeks of stable disease.

Hypocobalaminaemia is uncommon in cats in the United Kingdom.

Recent work has highlighted the importance of cobalamin deficiency in cats with a range of alimentary tract diseases. The primary aim of our study was to determine the incidence of subnormal cobalamin concentrations in sick cats with and without alimentary system disorders. Firstly, serum cobalamin concentrations were measured in a population of cats, with and without gastrointestinal (GI) disease, evaluated at a referral hospital. In the second part of the study, the incidence of cobalamin deficiency was assessed in samples submitted to a commercial laboratory specifically for cobalamin measurement. For both studies, a validated radioimmunoassay was used to measure serum cobalamin concentrations (reference range: > 150 pg/ml). In the first part of the study, 132 cats were included and none of these cats had subnormal cobalamin concentrations (median=1,172; range: 278 to >2,000). There were no differences in cobalamin concentrations between cats with alimentary system disorders, and those with diseases of other organs. In the second part, 682 samples were submitted for cobalamin assay over a period of 3 years, and only one cat had a result below the reference range (median=794; range: 147 to >2,000). Cobalamin deficiency was rare in the population tested and this may suggest that the incidence of this biochemical abnormality is less common than reported in the USA.

Appendicular arterial tumor embolization in two cats with pulmonary carcinoma.

A 13-year-old neutered male Persian cat and an 11-year-old neutered female Persian cat were examined because of an acute onset of lameness. In both cats, conscious proprioception and reflexes were diminished in the affected limb. In 1 cat, no blood flow was detected in the left brachial artery with a Doppler ultrasonic flow detector, whereas blood flow in the right brachial artery was easily documented. In the other cat, the right femoral pulse was not palpable. Neither cat had any echocardiographic evidence of cardiac disease. In both cats, treatment was primarily supportive. One cat died, and the other was euthanatized. At necropsy, lung lobe consolidation was seen. Microscopically, there was multifocal infiltration of the lung parenchyma with cuboidal to columnar neoplastic epithelial cells. Neoplastic epithelial cells of similar morphology were identified in nodular masses in sections of muscle, and intravascular tumor emboli were identified obliterating small and large arterioles. Immunohistochemical staining of pulmonary and muscular tissue for pan-cytokeratin antigen revealed intense cytoplasmic staining of neoplastic cells. Staining for factor VIII-related antigen confirmed that clusters of neoplastic cells represented intravascular emboli. Clinical signs in the cats were attributed to arterial occlusion by tumor emboli.