Face, Content, and Construct Validity of Brain Tumor Microsurgery Simulation Using a Human Placenta Model.

摘要: BACKGROUND Brain tumors are complex 3-dimensional lesions. Their resection involves training and the use of multiple microsurgical techniques available for removal. Simulation models, with haptic visual realism, may be useful improving bimanual technical skills neurosurgical residents neurosurgeons, potentially decreasing surgical errors thus patient outcomes. OBJECTIVE To describe assess an ex vivo placental model brain tumor microsurgery using a simulation tool in psychomotor teaching assessment. METHODS Sixteen human placentas were used this research project. Intravascular blood remnants removed by continuous saline solution irrigation 2 arteries vein. simulated silicone injections stroma. Eight neurosurgeons 8 carried out same instruments to perform operations. Face content validity was assessed subjective evaluation based on 5-point Likert scale. Construct analyzing performance neurosurgeon resident groups. RESULTS The placenta procedures high fidelity. Results showed face validity. demonstrated statistically different performances among evaluated CONCLUSION Human models simulate demonstrate face, content, construct