Influencia de la posición en la visualización con ultrasonido del nervio ciático en la fosa poplítea por médicos en formación

Abstract

Objective: Evaluate the effect of the patients' position in obtaining a good quality image of the sciatic nerve at the popliteal fossa by anesthesiology trainees. methods: First and 2nd year residents of our anesthesiology program scanned de right popliteal fossa of a unique subject. The subject laid in 3 different positions (supine, lateral and prone). Before the scanning, residents reviewed a video showing basic ultrasound probe management and images of the sciatic nerve at the popliteal fossa. Time elapsed upon receiving the ultrasound probe and obtaining a good quality image was measured (at least 70% counter definition and 3 clearly identified structures within the nerve). An evaluator (blinded to the subject position) determined during real time observation the quality of the image. Residents completed a questionnaire regarding the experience lived. results and Conclusions: 26 residents completed the study. There were no statistical differences in the overall time needed by residents to obtain a good quality image in the 3 different positions. Although 96% felt that position influenced the ability to obtain good image. From this experience residents would prefer to do an US guided popliteal block on the prone position. rESumENObjetivos: Evaluar la influencia de la posición del paciente en la obtención de una imagen de calidad del nervio ciático a nivel poplíteo por médicos en