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.Introducción: La simulación en medicina ha evolucionado sustancialmente en las últimas décadas. Actualmente hay una gran variedad de simuladores disponibles, especialmente dise˜nados para la práctica de procedimientos quirúrgicos. Debido a las largas curvas de apren- dizaje de las técnicas endourológicas mínimamente invasivas, la rama de la endourología se puede ver muy beneficiada por el uso de estos simuladores. Materiales y métodos: Se dise˜nó 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 dise˜no. 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 ±0,56) por los expertos y con 4,41 (±0,71) por los no expertos. En el cuestionario de validez aparente, la puntuación media fue de 4,14 (±0,94), y la pregunta que recibió la puntuación más alta 4,6 (±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

What is the impact of post‐radical prostatectomy urinary incontinence on everyday quality of life? Linking Pad usage and International Consultation on Incontinence Questionnaire Short‐Form (ICIQ‐SF) for a COMBined definition (PICOMB definition)

Aims: To identify the definition for urinary continence (UC) after radical prostatectomy (RP) which reflects best patients' perception of quality of life (QoL). Methods: Continence was prospectively assessed in 634 patients, 12 months after RP using the International Consultation on Incontinence Questionnaire Short‐Form (ICIQ‐SF) and the number of pads employed in a 24‐hour period (pad usage). We used the one‐way ANOVA technique with posthoc pairwise comparisons according to Scheffé's method (homogeneous subsets) for assessing the degree of QoL deficit related to urinary incontinence (UI). Results: The continence prevalence is 64.4%, 74.1%, 88.3%, and 35.8% using “0 pads,” “1 safety pad,” “1 pad,” and “ICIQ score 0” definitions, respectively. Pad usage is moderately strongly associated with ICIQ 1, 2, and 3 (ρ = 0.744, 0.677, and 0.711, respectively; p < 0.001). Concordance between classical UC definitions is acceptable between “0 pads—ICIQ score 0” (K = 0.466), but poor for “1 safety pad” and “1 pad” (K = 0.326 and 0.137, respectively). Patients with “0 pad usage” have better QoL related to urine leakage than patients with “1 safety pad” or “1 pad” (1.41 vs. 2.44 and 3.11, respectively; p < 0.05). There were no significant differences found regarding QoL between patients with ICIQ score 0 and ICIQ score 2 (1.01 vs. 1.63; p = 0.63).Conclusions: Pad usage and the ICIQ‐SF's answers provide useful information. We propose a combined definition (0 pads and ICIQ score ≤2) as it is the definition with the least impact on daily QoL