Desarrollo y validación de un nuevo simulador para endourología / The development and validation of a new simulator for endourology

Introducción La simulación en medicina ha evolucionado sustancialmente en las últimas décadas. Actualmente hay una gran variedad de simuladores disponibles, especialmente diseñados para la práctica de procedimientos quirúrgicos. Debido a las largas curvas de aprendizaje de las técnicas endourológicas mínimamente invasivas, la rama de la endourología se puede ver muy beneficiada por el uso de estos simuladores. Material y métodos Se diseñó un simulador de baja fidelidad para la práctica de técnicas endourológicas que utilizan cistoscopia. En el proceso de validación participaron 5 expertos y 19 no expertos. Los expertos eran profesionales médicos de un Departamento de Urología con experiencia de al menos 100 procedimientos de cistoscopia flexible. Los no expertos eran residentes en medicina interna sin experiencia en ningún tipo de técnica endoscópica. Se recogió información sobre la validez aparente y de contenido mediante escalas de Likert con puntuación de 1 a 5. Para evaluar la validez de constructo, se midió el tiempo para completar dos tareas, para lo cual se evaluó el procedimiento mediante la escala de evaluación global OSATS. Resultados El nuevo simulador se fabricó satisfactoriamente de acuerdo con su diseño. En todos los aspectos evaluados de la validez de constructo hubo una diferencia significativa (p<0,05) entre el grupo de expertos y el de no expertos. La validez de contenido fue puntuada con 4,66 (desviación estándar [DE] ±0,56) por los expertos y con 4,41 (DE±0,71) por los no expertos. En el cuestionario de validez aparente, la puntuación media fue de 4,14 (DE±0,94), y la pregunta que recibió la puntuación más alta (4,6 [DE±0,84]) evaluaba la inmersión en el procedimiento. Conclusión El simulador presentado es válido tanto para el entrenamiento de nuevos endourólogos como para el perfeccionamiento de las técnicas de los médicos expertos (AU)

Introduction Simulation in medicine has developed a lot in the last few decades. There is a broad range of simulators available, above all for training in surgical procedures. Endourology can benefit much from simulation because the minimally-invasive procedures of endourology frequently have long learning curves, which can be reduced by training with simulators. Material and methods A low-fidelity simulator was designed for practicing endourology techniques that use cystoscopy. The process of validation involved 5 experts and 19 non-experts. Experts comprised medical professionals working in a department of urology who had performed at least 100 flexible cystoscopy procedures. Non-experts were residents in internal medicine without experience in any type of endoscopy. Information about face and content validity was collected by means of Likert scales from 1 to 5. To evaluate construct validity, we measured the time to complete two tasks, for which the procedure was evaluated by means of the OSATS global evaluation scale. Results New simulator was successfully built according to its design. For all evaluated aspects of construct validity, there was a significant difference (P<.05) between the group of experts and the group of non-experts. Content validity was scored 4.66 (standard deviation±0.56) by the experts and 4.41 (±0.71) by the non-experts. In the face validity questionnaire, the average score was 4.14 (±0.94), the question receiving the highest score: 4.6 (±0.84) concerned immersion in the procedure. Conclusion The simulator presented is valid both for training up new urologists in endourology technique and for experts seeking to perfect their skills (AU)

The development and validation of a new simulator for endourology.

INTRODUCTION: Simulation in medicine has developed a lot in the last few decades. There is a broad range of simulators available, above all for training in surgical procedures. Endourology can benefit much from simulation because the minimally-invasive procedures of endourology frequently have long learning curves, which can be reduced by training with simulators. MATERIALS AND METHODS: A low-fidelity simulator was designed for practicing endourology techniques that use cystoscopy. The process of validation involved 5 experts and 19 non-experts. Experts comprised medical professionals working in a department of urology who had performed at least 100 flexible cystoscopy procedures. Non-experts were residents in internal medicine without experience in any type of endoscopy. Information about face and content validity was collected by means of Likert scales from 1 to 5. To evaluate construct validity, we measured the time to complete two tasks, for which the procedure was evaluated by means of the OSATS global evaluation scale. RESULTS: New simulator was successfully built according to its design. For all evaluated aspects of construct validity, there was a significant difference (p<0.05) between the group of experts and the group of non-experts. Content validity was scored 4.66 (standard deviation ±0.56) by the experts and 4.41 (±0.71) by the non-experts. In the face validity questionnaire, the average score was 4.14 (±0.94), the question receiving the highest score: 4.6 (±0.84) concerned immersion in the procedure. CONCLUSION: The simulator presented is valid both for training up new urologists in endourology technique and for experts seeking to perfect their skills.

Análisis de cuestionario de salud y desarrollo de cuestionario de satisfacción en pacientes tratados con litotricia extracorpórea por ondas de choque (SATISLIT) / Health questionnaire analysis and development of satisfaction questionnaire for patients treated with extracorporeal shock wave lithotripsy (SATISLIT)

INTRODUCCIÓN: Debido a la ausencia de instrumentos específicos para estudiar la esfera psicosocial de los pacientes que reciben litotricia extracorpórea por ondas de choque (LEOC), el objetivo es desarrollar un cuestionario de satisfacción respecto al tratamiento recibido con LEOC a partir de un cuestionario de salud ya diseñado y validado previamente. MATERIAL Y MÉTODOS: El diseño del cuestionario de satisfacción se realizó en 5 fases a partir de una escala de salud en pacientes tratados con LEOC (ESPTL) ya validada previamente, utilizando una muestra total de 135 pacientes tratados en nuestro centro a los que se entrevistó por vía telefónica. En la fase 1 se realizó análisis descriptivo de la serie y de las puntuaciones de los 8 ítems de ESPTL. En la fase 2 se compararon las puntuaciones de ESPTL según sexo con U-Mann Whitney, estudiando la correlación con la edad mediante Rho de Spearman en la fase 3. En la fase 3 se compararon las puntuaciones de los factores de ESPTL según el sexo y se analizó la correlación con la edad al igual que en las fases 2 y 3 con la puntuación global. En la fase 5 se obtuvo la subescala de satisfacción-SATISLIT- y se realizó análisis descriptivo, comparación según sexo, correlación con la edad y modelo de regresión lineal con respecto a ESPTL. RESULTADOS: Ciento treinta y cinco pacientes, 85 (63%) hombres, 50 (37%) mujeres. Mediana (mínimo-máximo) de edad 56 (27-79) y puntuación ESPTL 31 (8-39). Diferencias en puntuación global ESPTL entre hombres y mujeres (p < 0,001), así como en los ítems 1 (p = 0,029), 3 (p = 0,002), 6 (p = 0,006), 7 (p = 0,005) y 8 (p = 0,025). Correlación no significativa de ESPTL con la edad. Significativa en ítems 2, 4, 5 y 8 pero correlación muy débil (< 0,2). Cuatrofactores con 2 ítems cada uno, con diferencias estadísticamente significativas según sexo en F2 (p = 0,001), F3 (p = 0,007) y F4 (p = 0,001). Correlación significativa con la edad únicamente en F1 y F3 pero muy débil (< 0,2). Mediana (mínimo-máximo) SATISLIT 18 (4-20). Diferencias estadísticamente significativas según sexo (p = 0,001). Correlación no significativa con la edad (p = 0,836). Regresión lineal de SATISLIT con respecto a ESPTL significativa (p < 0,001). CONCLUSIONES: El trabajo realizado a partir de un cuestionario validado de salud ha proporcionado un nuevo instrumento de evaluación de la satisfacción tras tratamiento con LEOC llamado SATISLIT. Serán necesarios futuros estudios de validación externa y validación temporal para contrastar su verdadera utilidad clínica

INTRODUCTION: Due to the absence of specific instruments to study the psychosocial sphere of patients undergoing extracorporeal shock wave lithotripsy (SWL), the objective of this study is to develop a satisfaction questionnaire regarding the SWL treatment from a health questionnaire which was already designed and had been previously validated. MATERIAL AND METHODS: The design of the satisfaction questionnaire was carried out in 5 phases, based on a previously validated health scale in patients treated with SWL (ESPTL), including a total cohort of 135 patients treated at our center who received a phone interview. Phase 1: descriptive analysis of the series and scores of the 8 items of ESPTL. Phase 2: U-Mann Whitney comparison of ESPTL based on the patients' sex. Phase 3: study of ESPTL correlation with age using Spearman's Rho. Phase 4: grouping by factors of ESPTL, comparison by sex and correlation with age, as performed in phases 2 and 3 with the global score. Phase 5: obtaining the satisfaction subscale -SATISLIT-, descriptive analysis, comparison according to sex, correlation with age and linear regression model of SATISLIT with respect to ESPTL. RESULTS: 135 patients, 85(63%) men, 50(37%) women. Median (minimum-maximum) age 56 (27-79) and ESPTL score 31 (8-39). Differences in global ESPTL score between men and women (p < .001), as well as in items 1 (p =.029), 3 (p = .002), 6 (p = .006), 7 (p = .005) and 8 (p = .025). Non-significant correlation of ESPTL regarding age. Significant correlation in items 2, 4, 5 and 8 but, very weak (< 0.2).4 factors, each one with 2 items, with statistically significant differences regarding sex in F2 (p = .001), F3 (p =.007) and F4 (p = .001). Significant correlation with age only in F1 and F3, but very weak (< 0.2). Median (minimum-maximum) SATISLIT 18 (4-20). Statistically significant differences regarding patients' sex (p =.001). Non- significant correlation with age (p =.836). Significant linear regression of SATISLIT with respect to ESPTL (p < .001). CONCLUSIONS: Based on validated health questionnaire, the present work has provided a new instrument called SATISLIT for assessing patients' satisfaction after treatment with SWL. Future studies with external and temporal validation will be necessary to contrast its real clinical usefulness

Health questionnaire analysis and development of satisfaction questionnaire for patients treated with extracorporeal shock wave lithotripsy (SATISLIT). / Análisis de cuestionario de salud y desarrollo de cuestionario de satisfacción en pacientes tratados con litotricia extracorpórea por ondas de choque (SATISLIT).

INTRODUCTION: Due to the absence of specific instruments to study the psychosocial sphere of patients undergoing extracorporeal shock wave lithotripsy (SWL), the objective of this study is to develop a satisfaction questionnaire regarding the SWL treatment from a health questionnaire which was already designed and had been previously validated. MATERIAL AND METHODS: The design of the satisfaction questionnaire was carried out in 5 phases, based on a previously validated health scale in patients treated with SWL (ESPTL), including a total cohort of 135 patients treated at our center who received a phone interview. Phase 1: descriptive analysis of the series and scores of the 8 items of ESPTL. Phase 2: U-Mann Whitney comparison of ESPTL based on the patients' sex. Phase 3: study of ESPTL correlation with age using Spearman's Rho. Phase 4: grouping by factors of ESPTL, comparison by sex and correlation with age, as performed in phases 2 and 3 with the global score. Phase 5: obtaining the satisfaction subscale -SATISLIT-, descriptive analysis, comparison according to sex, correlation with age and linear regression model of SATISLIT with respect to ESPTL. RESULTS: 135 patients, 85(63%) men, 50(37%) women. Median (minimum-maximum) age 56 (27-79) and ESPTL score 31 (8-39). Differences in global ESPTL score between men and women (p <.001), as well as in items 1 (p =.029), 3 (p =.002), 6 (p =.006), 7 (p =.005) and 8 (p =.025). Non-significant correlation of ESPTL regarding age. Significant correlation in items 2, 4, 5 and 8 but, very weak (<0.2). 4 factors, each one with 2 items, with statistically significant differences regarding sex in F2 (p =.001), F3 (p =.007) and F4 (p =.001). Significant correlation with age only in F1 and F3, but very weak (<0.2). Median (minimum-maximum) SATISLIT 18 (4-20). Statistically significant differences regarding patients' sex (p =.001). Non- significant correlation with age (p =.836). Significant linear regression of SATISLIT with respect to ESPTL (p <.001). CONCLUSIONS: Based on validated health questionnaire, the present work has provided a new instrument called SATISLIT for assessing patients' satisfaction after treatment with SWL. Future studies with external and temporal validation will be necessary to contrast its real clinical usefulness.