RESUMO
Resumen Objetivo: Buscar el efecto que tiene el estrés académico en los procesos cognitivos de los discentes de sexto año pertenecientes a Escuela Militar de Medicina durante su internado pregrado. Materiales y métodos: El proceso de investigación se llevó a cabo en tres fases, donde la obtención de mediciones de la onda P300 y la evaluación del estrés académico en preguardia y postguardia abarcan las dos primeras fases y la recolección y comparación de los datos obtenidos en las fases uno y dos consistió en la última fase. Resultados: Al realizar la obtención de medias de latencia de la onda P300 preguardia 286.36 ms y en posguardia de 331.98, se identificó una prolongación en dicho parámetro, con una p= <0.0001, altamente significativa. Respecto a la amplitud de la onda en la preguardia se obtuvo una media de 13.050 µV y en post guardia de 7.784 µV. Se encontró una asociación directamente proporcional entre la puntuación de la prueba de estrés obtenido en la preguardia y la latencia de P300 obtenida en ese mismo momento, al utilizar la correlación de Spearman (r=0.996, p=<0.001). La comparación reveló una asociación inversamente proporcional (r=0.998, p=<0.001). Existió una relación inversamente proporcional entre la amplitud de P300 obtenida en posguardia y el puntaje de la prueba de estrés obtenido en la posguardia (r=0.998, p=0.001). Con tales resultados podemos afirmar la asociación de los cambios morfológicos de P300 con los puntajes obtenidos en las pruebas de estrés aplicados.
Abstract Objective: Look for the effect that academic stress has on the cognitive processes of sixth-year students belonging to the Military School of Medicine during their undergraduate internship. Materials and methods: The research process was carried out in three phases, where the obtaining of measurements of the P300 wave and the evaluation of academic stress in pre-guard and post-guard cover the first two phases and the collection and comparison of the data obtained in phases one and two consisted of the last phase. Results: When obtaining the mean latency of the P300 wave pre-guard 286.36 ms and at the rear of 331.98, a prolongation in said parameter was identified, with a p=<0.0001, highly significant. Regarding the amplitude of the wave in the pre-guard, an average of 13,050 µV was obtained and in post-guard of 7,784 µV. A directly proportional association was found between the stress test score obtained in the foreguard and the P300 latency obtained at the same time, when using the Spearman correlation (r=0.996, p=<0.001). The comparison revealed an inversely proportional association (r=0.998, p=<0.001). There was an inversely proportional relationship between the amplitude of P300 obtained in the rearguard and the stress test score obtained in the rearguard (r=0.998, p=0.001). With these results we can affirm the association of the morphological changes of P300 with the scores obtained in the applied stress tests.
RESUMO
BACKGROUND: Adherence to disease-modifying therapies is determinant to attain maximal clinical benefit in multiple sclerosis (MS). RebiSmart® is an electronic auto-injector for subcutaneous delivery of interferon ß-1a (INF-ß1a) that monitors adherence by featuring a log of each drug administration for objective evaluation. The aim of this study was to assess long-term adherence to INF-ß1a by using the RebiSmart® device in Mexican patients with relapsing MS. METHODS: This is an observational multicenter study on patients with relapsing MS treated with INF-ß1a subcutaneously delivered by the RebiSmart® device. Adherence was computed as the number of injections received during the study period divided by the number of injections scheduled and expressed as percent. RESULTS: A total of 66 patients from 6 specialized MS centers were evaluated (45 females and 21 males, mean age 43.91±13.32 years). Mean adherence was 79.51±18% (median: 85.54%, range: 34.4-100%). During a median follow-up of 27.5 months (mean 33.36±29.39 months) the annualized relapse rate had a mean of 0.50±1.63. Mean initial EDSS was 1.90±1.52, and mean EDSS at the end of follow-up was 1.80±1.74. Compared with their counterparts, the mean number of relapses was significantly lower among patients with high (>80%) adherence (0.25±0.44 vs 0.67±92 relapses, respectively; P = 0.03). The proportion of relapse-free patients was 75.0% among patients with high adherence and 53.3% in low-compliant patients (P = 0.06). High adherence patients presented lower rates of EDSS worsening ≥1.0 at the end of treatment, as compared with low-compliant patients (11.1% vs 43.3%, respectively; P = 0.003). High schooling (>12 years) was the only predictor of a high adherence (OR: 2.97, 05% CI: 1.08-1.18; P = 0.03) and of being relapse-free during follow-up (OR: 3.22, 05% CI: 1.12-9.23; P = 0.03). CONCLUSION: Adherence to INF-ß1a using RebiSmart® in this Mexican cohort with MS was moderate, but associated with low relapse rate and influenced by high schooling.